Mercury 1250BP (2641855 THRU 3253111) Outboard Motor Parts Diagram & Catalog – Free PDF Download
BOTTOM COWL AND SHIFT LINKAGE
Back to TopBelow is the parts list for Mercury 1250BP BOTTOM COWL AND SHIFT LINKAGE:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | COWL, BOTTOM ( MERC 1000BP) | 2115-3807 | |
1 | COWL, BOTTOM (MERC 1250BP) | 2115-3807 | |
2 | DRIP TRAY ASSEMBLY, BOTTOM COWL | 52862A2 | |
3 | PAD, SOUND - DRIP TRAY | 37940 | |
4 | SCREW, DRIP TRAY TO BOTTOM COWL (1/2") | 10-41228 | |
5 | HOSE, DRIP TRAY TO BOTTOM COWL (8") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
6 | BOOT, CONTROL CABLES - BOTTOM COWL | 37638 | |
7 | SPACER, BOTTOM COWL (COWL FRONT COVER) | 76369 | |
8 | SCREW, SPACER TO BOTTOM COWL (1/2") | 10-48591 | |
9 | BOOT, FUEL CONNECTOR - BOTTOM COWL | 37637 | |
10 | BAFFLE, BOTTOM COWL | 23760 | |
11 | SCREW, BAFFLE TO BOTTOM COWL | 10-52867 | |
12 | SUPPORT, WIRING HARNESS - BOTTOM COWL | 37445 | |
13 | SCREW, WIRING HARNESS SUPPORT TO BOTTOM COWL (1 3/4") | 10-69029 | |
14 | NUT, WIRING HARNESS SUPPORT SCREW | 11-8M0207775 | |
15 | HOSE, TELL TALE - EXHAUST COVER TO BOTTOM COWL (16") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
16 | NOZZLE, TELL TALE HOSE TO BOTTOM COWL | 52889 | |
17 | SCREW, TELL TALE NOZZLE TO BOTTOM COWL (1/2") | 10-41228 | |
18 | ELBOW, TELL TALE HOSE TO EXHAUST COVER | 22-996642 | |
19 | CLAMP, TELL TALE HOSE TO CONNECTOR AND ELBOW | 54-48123 | |
20 | GASKET, POWERHEAD TO DRIVE SHAFT HOUSING | 10-28713 | |
21 | SEAL, RUBBER - WATER INLET TUBE | 26-38970 | |
22 | RETAINER, WATER TUBE SEAL | 38448 | |
23 | SCREW, RETAINER TO DRIVE SHAFT HOUSING (3/4") | 10-69069 | |
24 | SEAL, COWL - FRONT | 37918 | |
25 | STRIP, RETAINING - COWL SEAL | 99358 | |
26 | SCREW, SEAL AND RETAINING STRIP TO COWL | 10-37571 | |
27 | SHIFT SHAFT ASSEMBLY, UPPER (SHORT SHAFT) | 48943A2 | |
27 | SHIFT SHAFT ASSEMBLY, UPPER (LONG SHAFT) | 53777A2 | |
28 | LINK ROD ASSEMBLY | 48047A2 | |
29 | WASHER, LINK ROD | 12-24664 | |
30 | WASHER, WAVE - LINK ROD | 13-29720 | |
31 | BRACKET ASSEMBLY, ANCHOR CONTROL CABLES | 52732A6 | |
32 | CAP, BRASS BARREL TO THROTTLE CABLE | 38802 | |
32 | CAP, BRASS BARREL TO THROTTLE CABLE | 49935 | |
33 | SCREW, ANCHOR BRACKET TO CYLINDER BLOCK (1") | 10-35386 | |
34 | SPRING, LINK ROD TO GUIDE BLOCK | 24-20099 | |
35 | GUIDE BLOCK, LINK ROD | 37896 | |
36 | WEAR PLATE, LINK ROD | 52100 | |
37 | LATCH, CONTROL CABLE FASTENING - ANCHOR BRACKET | 8M0036768 | 38279 |
38 | WASHER, PLAIN - LINK ROD | 12-69056 | |
39 | NUT, LINK ROD | 11-826709109 | 11-33825, 11-35045 |
40 | LEVER ASSEMBLY, CONTROL CABLE LOCKING - ANCHOR BRACKET | 49932A1 | |
41 | SPRING, CONTROL CABLE LOCKING LEVER | 24-37911 | |
42 | PIN, ROLL - CONTROL CABLE LOCKING LEVER | 17-239281 | |
43 | SPRING, CONTROL CABLE TENSION - ANCHOR BRACKET | 24-38472 | |
44 | GROUND STRAN ASSEMBLY CRANKCASE TO COWL (3 5/8") | 46933A1 | |
45 | GROUND STRAP ASSEMBLY, DRIVE SHAFT HOUSING TO COWL (3 3/8") | 46933A2 | |
46 | SCREW, GROUND STRAP FASTENING | 10-62568 | |
47 | LOCKWASHER, GROUND STRAP SCREW | 13-69432 |
CARBURETOR ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP CARBURETOR ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CARBURETOR ASSEMBLY, COMPLETE (KD-3A) | 1354-3857 | |
2 | FLOAT ASSEMBLY | 1395-8673 | |
3 | PIN, FLOAT LEVER PINION (#) | ||
4 | LEVER, FLOAT (LOWER) (#) | ||
5 | LEVER, FLOAT (UPPER) (#) | ||
6 | INLET NEEDLE, SEAT AND GASKET | 1395-92581 | |
7 | GASKET, INLET SEAT (#) | ||
8 | GASKET, FLOAT BOWL COVER (#) | ||
9 | COVER, FLOAT BOWL | 1399-1133 | |
10 | SCREW, FLOAT BOWL COVER (SHORT) | 10-52195 | |
11 | SCREW, FLOAT BOWL COVER (LONG) | 10-52196 | |
12 | LOCKWASHER, FLOAT BOWL COVER SCREW | 52194 | |
13 | GASKET, STRAINER COVER (LARGE) (#) | ||
14 | SCREEN, FILTER | 1399-3938 | |
15 | GASKET, STRAINER COVER (SMALL) (#) | ||
16 | COVER, STRAINER | 1399-4791A1 | |
17 | GASKET, STRAINER COVER SCREW (#) | ||
18 | SCREW, STRAINER COVER FASTENING | 10-25822 | |
19 | SCREW, THROTTLE STOP LEVER | 1395-6027 | |
20 | LEVER, THROTTLE STOP Comment: USED ON CENTER AND LOWER CARBURETOR ONLY--REPLACED WITH A-27977 CLUSTER ON UPPER CARBURETOR | 8146791 | |
21 | SHAFT, THROTTLE | 1395-7942 | |
22 | TUBE, IDLE (#) | ||
22 | TUBE, IDLE (#) | ||
23 | SCREW, BODY (IDLE TUBE) | 10-23178 | |
24 | GASKET, IDLE TUBE (#) | ||
25 | SCREW AND LOCKWASHER, THROTTLE SHUTTER (#) | ||
26 | SHUTTER, THROTTLE | 1395-9017 | |
27 | SPRING, IDLE ADJUSTMENT SCREW (#) | ||
28 | SCREW, IDLE ADJUSTMENT | 1399-3515 | |
29 | SCREW, PLUG - MAIN FUEL JET CHANNEL | 10-28405 | |
30 | GASKET, JET CHANNEL PLUG SCREW (#) | ||
31 | JET, MAIN FUEL (.0785) | 1399-3520 | |
31 | JET, MAIN FUEL (.076) - STANDARD | 1399-3796 | |
31 | JET, MAIN FUEL (.074) | 1399-3794 | |
31 | JET, MAIN FUEL (.072) | 1395-6207 | |
32 | NOZZLE, MAIN (#) | ||
33 | SCREW, PLUG - MAIN NOZZLE | 1399-3522 | |
34 | SPRING, THROTTLE SHAFT RETURN (#) Comment: CENTER AND LOWER CARBURETOR | ||
34 | SPRING, THROTTLE SHAFT RETURN (UPPER CARBURETOR) (#) | ||
35 | WELCH PLUG, BODY CHANNEL (#) | ||
36 | SCREW, BODY CHANNEL | 10-23030 | |
-- | GASKET AND PACKING SET (1 PER CARBURETOR) | 1395-879194024 | 1399-3523, 1395-4808, 1395-4808B 1 |
-- | REPAIR PARTS KIT (1 PER CARBURETOR) | 1399-3937 | |
37 | GASKET, CARBURETOR FLANGE | 27-481641 | |
38 | NUT, CARBURETOR MOUNTING STUD | 11-29250 |
CARBURETOR LINKAGE AND CHOKE SOLENOID
Back to TopBelow is the parts list for Mercury 1250BP CARBURETOR LINKAGE AND CHOKE SOLENOID:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CHOKE SOLENOID | 48187 | |
2 | LOCKWASHER, SOLENOID TERMINAL | 13-26996 | |
3 | NUT, SOLENOID TERMINAL | 11-68219 | |
4 | SCREW, CHOKE SOLENOID (3/4") | 10-25299 | |
5 | LOCKWASHER, CHOKE SOLENOID SCREW | 13-8M0204647 | |
6 | PLUNGER AND LINK ASSEMBLY, CHOKE SOLENOID | 48315A2 | |
7 | CLUSTER, THROTTLE LEVER (UPPER CARBURETOR) | 52518 | |
8 | SCREW, CLUSTER TO THROTTLE LEVER | 1395-6027 | |
9 | CARBURETOR ASSEMBLY, COMPLETE (KD-3A) | 1354-3857 | |
10 | THROTTLE PICK-UP BRACKET ASSEMBLY | 53720A2 | |
11 | SCREW,THROTTLE BRACKET MOUNTING (1/2") | 10-53651 | |
12 | BRACKET, COIL LEAD RETAINER | 59757 | |
13 | SCREW, COIL BRACKET (1") | 10-64278 | |
14 | WASHER, COIL BRACKET SCREW | 12-8M0204649 | |
15 | NUT, COIL BRACKET SCREW | 11-8M0207775 | |
16 | KNOB, CHOKE ROD | 11-22496 | |
17 | GROMMET, CHOKE ROD | 25-20116 | |
18 | STRAP, CHOKE KNOB TO CHOKE ROD | 49589 | |
19 | SCREW, STRAP TO CHOKE KNOB (1/2") | 10-48591 | |
20 | LOCKWASHER, STRAP SCREW | 13-26996 | |
21 | ROD, CHOKE | 48203 | |
22 | SCREW, STRAP TO CHOKE ROD (1/2") | 10-48591 | |
23 | NUT, STRAP TO CHOKE ROD SCREW | 11-46438 | |
24 | SHUTTER, CHOKE - CARBURETOR | 48152 | |
25 | STUD, CARBURETOR - CHOKE SHUTTER PIVOT | 16-69037 | |
26 | NUT, CHOKE SHUTTER TO CARBURETOR STUD | 11-20110 | |
27 | SCREEN, FILTER - CARBURETOR (MIDDLE AND TOP) | 35-57819A1 | |
28 | SCREW, CARBURETOR FILTER SCREEN TO CARBURETOR (3/4") | 10-22523 | |
29 | NUT, CARBURETOR FILTER SCREEN FASTENING SCREW | 11-20110 | |
30 | SCREEN, FILTER -CARBURETOR (LOWER) | 35-48406 | |
31 | SPRING, CHOKE ROD TENSION | 24-48230 | |
32 | STUD, CHOKE ROD SPRING TO CARBURETOR | 10-657461 | |
33 | SPACER, CHOKE ROD SPRING STUD | 23-32427 | |
34 | NUT, CHOKE ROD SPRING TO CARBURETOR STUD | 11-8M0207775 |
CLAMP AND SWIVEL BRACKET ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP CLAMP AND SWIVEL BRACKET ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CLAMP BRACKET ASSEMBLY | 1440-3296A1 | |
2 | THUMB SCREW ASSEMBLY | 28403A3 | |
3 | WASHER, THUMB SCREW | 12-28404 | |
4 | SERIAL PLATE | 38-56267 | |
5 | SCREW, SERIAL PLATE TO SWIVEL BRACKET | 10-25612 | |
6 | SWIVEL PIN AND STEERING ARM ASSEMBLY (SHORT SHAFT) | 17-48883A1 | |
6 | SWIVEL PIN AND STEERING ARM ASEEMBLY (LONG SHAFT) | 17-53776A1 | |
7 | SEAL, RUBBER - SWIVEL PIN | 26-52924 | |
8 | BOLT, STEERING ARM TO UPPER MOUNT | 10-49373 | |
9 | NUT, STEERING ARM BOLT | 11-8M0204653 | |
10 | SWIVEL BRACKET ASSEMBLY (SHORT SHAFT) | 1453-4673A1 | |
10 | SWIVEL BRACKET ASSEMBLY (LONG SHAFT) | 1464-3859A1 | |
11 | OIL SEAL, SWIVEL BRACKET | 26-37448 | |
12 | BUSHING SWIVEL BRACKET | 23-54191 | |
13 | SCREW, DRIVE - SWIVEL BRACKET | 10-47828 | |
14 | FITTING, GREASE - SWIVEL BRACKET | 22-69059 | |
15 | LUBRICAP, SWIVEL BRACKET GREASE FITTING | 19-77633Q | |
16 | TUBE, TILT - CLAMP BRACKET TO SWIVEL BRACKET | 8M0041936 | 8M0035074, 883067, 30664 2, 74528 |
17 | WASHER, CLAMP BRACKET TILT TUBE | 12-52864 | |
18 | NUT, TILT TUBE FASTENING | 11-858869 | 11-30499 |
19 | CAP, PLASTIC - TILT TUBE | 53078 | |
20 | SPACER, CLAMP BRACKET STUD | 23-59624 | |
21 | STUD, CLAMP BRACKET | 16-59625 | |
22 | WASHER, CLAMP BRACKET STUD | 12-24812 | |
23 | NUT, CLAMP BRACKET STUD | 11-862902 | 11-25594 |
24 | SCREW, TILT LOCK PIN (9 3/8") | 10-49369 | |
25 | WASHER, TILT LOCK PIN SCREW | 12-37828 | |
26 | NUT, TILT LOCK PIN SCREW | 11-82671013 | |
27 | BOLT, CLAMP BRACKET TO BOAT TRANSOM | 10-68298 | |
27 | BOLT, CLAMP BRACKET TO BOAT TRANSOM | 10-68299 | |
28 | WASHER, CLAMP BRACKET BOLT | 12-68410 | |
28 | WASHER, CLAMP BRACKET BOLT | 12-68300 | |
29 | NUT, CLAMP BRACKET BOLT | 11-82670912 | |
30 | TILT STOP LEVER ASSEMBLY (SHORT SHAFT) | 30126A1 | |
31 | SCREW, TILT STOP LEVER TO CLAMP BRACKET (SHORT SHAFT) | 10-30128 | |
32 | WASHER, WAVE - TILT STOP LEVER SCREW (SHORT SHAFT) | 13-31030 | |
33 | NUT, TILT STOP LEVER SCREW (SHORT SHAFT) | 11-29250 | |
34 | TILT LOCK ASSEMBLY, STARBOARD (LONG SHAFT) | 76386 | |
35 | TILT LOCK ASSEMBLY, PORT (LONG SHAFT) | 76385T | |
36 | TUBE, TILT LOCK (LONG SHAFT) | 47802 | |
37 | COTTER PIN, TILT LOCK TUBE (LONG SHAFT) | 18-47959 | |
38 | BUSHING, TILT LOCK TUBE (LONG SHAFT) | 23-47803 | |
39 | WASHER, WAVE - TILT LOCK TUBE (LONG SHAFT) | 13-69150 | |
40 | PIN, LOWER EYE BOLT MOUNTING (SHORT SHAFT) | 55-49577 | |
40 | PIN, LOWER EYE BOLT MOUNTING (LONG SHAFT) | 55-28414 | |
-- | SCREW, LOWER EYE BOLT MOUNTING PIN (2 1/8") (LONG SHAFT) | 10-28424 | |
-- | NUT, LOWER EYE BOLT MOUNTING PIN SCREW (LONG SHAFT) | 11-8M0207775 | |
41 | WASHER, SWIVEL PIN | 12-37429 | |
42 | WASHER | 12-48926 | |
43 | YOKE, BOTTOM | 48884 | |
44 | NUT, SWIVEL PIN RETAINING | 11-37424 | |
45 | SCREW, YOKE TO DRIVE SHAFT HOUSING - LOWER (3 1/2") | 10-48924 | |
46 | WASHER, YOKE SCREW | 12-24501 | |
47 | NUT, YOKE SCREW | 11-35000 | |
48 | EYE BOLT ASSEMBLY | 49982A1 | |
49 | SCREW, NYLOK - -LOWER EYE BOLT MOUNTING PIN (3/4") | 10-69375A1 | |
50 | WASHER, LOWER BUSHING RETAINER | 12-8M0204648 | |
51 | BUSHING, RUBBER - EYE BOLT | 23-28198 | |
52 | NUT, EYE BOLT | 11-20739 | |
53 | WASHER, PLAIN - EYEBOLT | 12-52601 | |
54 | GASKEY, EYE BOLT (3/16" NEOPRENE) | 27-49985 | |
55 | WASHER, CUPPED - EYE BOLT | 12-49983 | |
56 | GASKET, EYE BOLT (1/2" NEOPRENE) | 27-49984 | |
57 | NUT, EYE BOLT | 11-8M2014641 | 11-826713 23 |
58 | ROD, STEERING | 52131 | |
59 | SLEEVE, STEERING ROD | 23-52169 | |
60 | WASHER, STEERING ROD | 12-20086 | |
61 | NUT, STEERING ROD | 11-8M0204726 |
COWLING AND FRONT COVER
Back to TopBelow is the parts list for Mercury 1250BP COWLING AND FRONT COVER:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | COWL FRONT COVER ASSEMBLY | 2183-7928A3 | |
2 | EMBLEM, FRONT COVER | 37-64413 | |
3 | KNOB, COWL FRONT COVER FASTENING | 56849 | |
4 | WASHER, COVER FASTENING KNOB (RUBBER) | 12-30771 | |
5 | WASHER, COVER FASTENING KNOB (STEEL) | 12-26825 | |
6 | SPRING, TENSION - FASTENING KNOB | 24-30772 | |
7 | ROLL PIN, TENSION SPRING TO KNOB | 17-29077 | |
8 | STRIP, SOUND ABSORBING | 31089 | |
9 | BLANKET, SOUND ABSORBING | 38675 | |
10 | SEAL, SOUND ABSORBING - UPPER | 35769 | |
11 | SEAL, SOUND ABSORBING - TOP | 53334 | |
12 | WRAP AROUND COWL ASSEMBLY | 2136-4660A17 | |
13 | SCREEN, WRAP AROUND COWL - UPPER | 54943 | |
14 | SCREEN, WRAP AROUND COWL - LOWER | 54942 | |
15 | RIVET, SCREEN TO COWL | 17-54944 | |
16 | COWL LATCH ASSEMBLY | 46785A1 | |
17 | HOOK, COWL LATCH FASTENING | 30413 |
CRANKSHAFT, PISTONS AND CONNECTING RODS
Back to TopBelow is the parts list for Mercury 1250BP CRANKSHAFT, PISTONS AND CONNECTING RODS:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CRANKSHAFT ASSEMBLY (MERC 1000BP) - NOT AS SHOWN | 436-3760A2 | |
1 | CRANKSHAFT ASSEMBLY (MERC 1250BP) - NOT AS SHOWN | 436-3803A2 | |
2 | NUT, FLYWHEEL TO CRANKSHAFT | 11-52901 | |
3 | BEARING, BALL - UPPER | 30-62567T | |
4 | BEARING, BALL - LOWER | 30-63742T | |
5 | CARRIER, "O" RING - CRANKSHAFT | 54196A6 | |
6 | "O" RING, CARRIER | 25-35126 | |
7 | CENTER MAIN BEARING ASSEMBLY | 535-3190A2 | |
8 | DOWEL PIN, CENTER MAIN BEARING | 17-20032 | |
9 | BEARING, NEEDLE - OUTER RACE | 29-714221 | |
10 | RACE, OUTER (PAIR) | 26113T | |
11 | RING, SNAP - OUTER RACE | 53-26933 | |
12 | DOWEL PIN, STEPPED | 17-47246 | |
13 | SCREW, CENTER MAIN BEARING CLAMPING (1 1/4") | 10-22968 | |
14 | NUT, BEARING CLAMPING SCREW | 11-8M0207775 | |
15 | MAIN BEARING ASSEMBLY, VALVE TYPE | 540-7238A2 | |
16 | DOWEL PIN, MAIN BEARING | 17-20032 | |
17 | SCREW, MAIN BEARING CLAMPING (9/16") | 10-45775 | |
18 | NUT, MAIN BEARING CLAMPING SCREW | 11-45774 | |
19 | REED SET, MATCHED - MAIN BEARING | 34-56007A1 | |
20 | REED STOP, MAIN BEARING REED VALVES | 34-48081 | |
21 | SCREW, REED STOP MOUNTING (3/8") | 10-20597 | |
22 | PISTON AND PIN ASSEMBLY (MERC 1000BP) | 745-3759A2 | |
22 | PISTON AND PISTON PIN ASSEMBLY (MERC 1250BP) | 774-9137A12 | |
23 | LOCK RING, PISTON PIN | 53-857196 | 40-52035 |
24 | RING, PISTON (1/16") | 39-48834A12 | |
25 | CONNECTING ROD AND CAP ASSEMBLY (MERC 1000BP) | 624-8101A3 | |
25 | CONNECTING ROD AND CAP ASSEMBLY (MERC 1250BP) | 624-8101A3 | |
26 | BEARING ASSEMBLY, CRANKPIN (MERC 1000BP) | 31-62596A1 | |
26 | BEARING ASSEMBLY, CRANKPIN (MERC 1250BP) | 31-62596A1 | |
27 | SCREW, CONNECTING ROD | 10-54803 | |
28 | NUT, CONNECTING ROD SCREW | 11-49091 | |
29 | BEARING, NEEDLE - PISTON PIN | 29-8M0214934 | |
30 | WASHER, NEEDLE LOCATING | 12-8M0032839 | 12-47247 |
-- | PISTON AND PISTON PIN ASS'Y (.015 OVERSIZE) - MERC 1000BP | 745-3851A1 | |
-- | PISTON AND PISTON PIN ASS'Y (.015 OVERSIZE) - MERC 1250BP | 774-9137A13 | |
-- | RING, PISTON (.015 OVERSIZE) - 1/16" THICK | 39-49839A12 |
CYLINDER BLOCK AND CRANKCASE ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP CYLINDER BLOCK AND CRANKCASE ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | END CAP ASSEMBLY, UPPER | 1134-3197A1 | |
2 | OIL SEAL | 26-41953 | |
3 | "O" RING | 25-47254 | |
4 | SHIM, END CAP TO CRANKCASE (.002-3-5-10) | 15-47248A1 | |
5 | SCREW, END CAP MOUNTING (1") | 10-30225 | |
6 | CYLINDER BLOCK AND CRANKCASE ASSEMBLY (MERC 1000BP) Comment: NOT AS SHOWN | 846-3762A4 | |
6 | CYLINDER BLOCK AND CRANKCASE ASSEMBLY (MERC 1250BP) Comment: NOT AS SHOWN | 852-3884A6 | |
7 | GASKET, CRANKCASE TO CYLINDER BLOCK | 27-53862 | |
8 | STUD,CARBURETOR MOUNTING (1 3/16") | 16-64936 | |
9 | STUD, CRANKCASETO DRIVE SHAFT HOUSING (1 7/8") | 16-64281 | |
10 | PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK | 17-43044 | |
11 | PIN, DOWEL - CYLINDER BLOCK TO MAIN BEARING | 17-20323 | |
12 | STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (3 9/16") | 16-48770 | |
13 | STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2 1/8") | 16-68166 | |
13 | STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2") | 16-52540 | |
14 | SCREW, CRANKCASE TO CYLINDER BLOCK (2 1/2") | 10-26132 | |
15 | SCREW, CRANKCASE TO CYLINGER BLOCK (1 3/4") | 10-32293 | |
-- | WASHER, CRANKCASE TO CYLINDER BLOCK SCREW | 12-26825 | |
15 | SCREW, CRANKCASE TO CYLINDER BLOCK ( 1 5/8") | 10-69091 | |
16 | NUT, CRANKCASE FASTENING SCREW | 11-29250 | |
17 | SCREW, CENTER MAIN BEARING LOCKING | 10-20359 | |
18 | TAB WAHER, BEARING LOCKING SCREW | 14-20091 | |
19 | END CAP ASSEMBLY, LOWER | 1126-3544A3 | |
20 | CHECK VALVE ASSEMBLY, END CAP | 21-28481A1 | |
21 | OIL SEAL, UPPER | 26-41953 | |
22 | "O"RING | 25-20081 | |
23 | SHIM, END CAP TO CRANKCASE (.002-3-5-10) | 15-20085A1 | |
24 | SCREW, END CAP MOUNTING (1") | 10-30225 | |
25 | COVER, WATER JACKET - CYLINDER BLOCK Comment: PART OF CYLINDER BLOCK AND CRANKCASE ASSEMBLIES | 66696A1 | |
26 | GASKET, WATER JACKET COVER Comment: PART OF CYLINDER BLOCK AND CRANKCASE ASSEMBLIES | 27-47228 | |
27 | SCREW, WATER JACKET COVER TO CYLINDER BLOCK (7/8") Comment: PART OF CYLINDER BLOCK AND CRANKCASE ASSEMBLIES | 10-53167T | |
28 | LOCKWASHER, WATER JACKET COVER FASTENING SCREW Comment: PART OF CYLINDER BLOCK AND CRANKCASE ASSEMBLIES | 13-53166 | |
29 | GASKET, CYLINDER BLOCK TO BAFFLE PLATE | 27-55283 | |
30 | PLATE, BAFFLE - EXHAUST MANIFOLD | 62277A1 | |
31 | GASKET, BAFFLE PLATE TO EXHAUST MANIFOLD COVER | 27-55284 | |
32 | COVER, EXHAUST MANIFOLD | 55281T | |
33 | SCREW, MANIFOLD COVER MOUNTING (1 1/8") | 10-38837 | |
34 | COVER, CYLINDER BLOCK | 1023-3755A1 | |
35 | GASKET, CYLINDER BLOCK COVER | 27-981853 | |
36 | SCREW, CYLINDER BLOCK COVER MOUNTING (1 1/8") | 10-21091 | |
37 | NUT, COVER MOUNTING SCREW | 11-8M0207775 | |
38 | PLUG, PIPE - CYLINDER BLOCK COVER | 22-328022 | |
39 | BRACKET, MOUNT SUPPORT - CYLINDER BLOCK | 37440 | |
40 | SCREW, BRACKET TO CYLINDER BLOCK (1") | 10-35386 | |
41 | COVER, TRANSFER PORT | 54804 | |
42 | GASKET, TRANSFER PORT COVER | 27-52891 | |
43 | SCREW, TRANSFER PORT COVER MOUNTING (3/4") | 10-28636 | |
43 | SCREW, TRANSFER PORT COVER MOUNTING (1") | 10-8M0214943 | |
44 | CONNECTOR, CYLINDER BLEED HOSE - UPPER | 22-67902 | |
45 | HOSE, UPPER CYLINDER BLEED (9 1/2") | 32-9912688 | |
46 | CHECK VALVE ASSEMBLY BLEED HOSE | 22-62365A1 | |
47 | CHECK VALVE ASSEMBLY | 21-28481A1 | |
48 | CLAMP, BLEED HOSE TO CONNECTOR | 54-20387 | |
49 | ELBOW, BALANCE TUBE TO MAIN BEARING SCREW | 22-20781 | |
50 | HOSE, CENTER CYLINDER BLEED (7 1/2") | 32-9912688 | |
51 | TEE, BLEED HOSE TO CYLINDER BLOCK - CENTER | 22-432881 | |
52 | TEE, BLEED HOSE TO CYLINDER BLOCK - LOWER | 22-53491 | |
53 | CLAMP, BALANCE TUBE TO ELBOW AND TEE | 54-20386 | |
54 | TUBE, BALANCE - MAIN BEARING | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
55 | HOSE, CYLINDER BLEED - LOWER (8 1/2") | 32-9912688 |
DISTRIBUTOR ADAPTOR AND VERTICAL LINKAGE
Back to TopBelow is the parts list for Mercury 1250BP DISTRIBUTOR ADAPTOR AND VERTICAL LINKAGE:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | HOUSING ASSEMBLY, DISTRIBUTOR | 393-3736A79 | |
2 | STOP, SPARK ADVANCE - DISTRIBUTOR HOUSING | 32197 | |
3 | PIN, ANCHOR SPRING - DISTRIBUTOR HOUSING | 17-27962 | |
4 | SPRING, HORSESHOE - DISTRIBUTOR HOUSING | 24-27944 | |
5 | WASHER, ECONOMIZER COLLAR - DISTRIBUTOR HOUSING | 12-53540 | |
6 | ECONOMIZER COLLAR ASSEMBLY | 55804A1 | |
7 | PIN, ECONOMIZER COLLAR - SPRING RETAINER | 17-27961 | |
8 | FITTING , GREASE - ECONOMIZER COLLAR | 22-25094 | |
9 | SWIVEL, LINKAGE - ECONOMIZER COLLAR | 27947 | |
10 | SWIVEL AND LINK ROD ASSEMBLY | 25996A1 | |
11 | NUT, UPPER LINK ROD ADJUSTING | 11-25168 | |
12 | ROD, LINK - UPPER | 37588 | |
13 | SWIVEL, UPPER LINK ROD TO THROTTLE CONTROL LEVER | 27948 | |
14 | LEVER, THROTTLE CONTROL | 48856 | |
15 | WASHER, WAVE -THROTTLE CONTROL LEVER SWIVEL | 13-25806 | |
16 | WASHER THROTTLE CONTROL LEVER SWIVEL | 12-8M0204649 | |
17 | NUT, UPPER LINK ROD TO THROTTLE CONTROL LEVER | 11-8267089 | |
18 | SCREW, THROTTLE LEVER TO EXHAUST COVER (1 3/4") | 10-31830 | |
19 | WASHER, THROTTLE CONTROL LEVER SCREW | 12-8M0042641 | 12-29395 |
20 | BUSHING, THROTTLE CONTROL LEVER SCREW | 23-45818 | |
21 | NUT, THROTTLE CONTROL LEVER SCREW | 11-8M0204726 | |
22 | SWIVEL, LOWER - THROTTLE CONTROL LEVER TO THROTTLE CABLE | 37587 | |
23 | NUT, THROTTLE CABLE TO LOWER SWIVEL | 11-8267089 | |
24 | COLLAR, THROTTLE ACTUATOR | 48692 | |
25 | SCREW, ADJUSTING - THROTTLE ACTUATOR COLLAR (1 1/2") | 10-48675 | |
26 | NUT, THROTTLE ACTUATOR COLLAR ADJUSTING SCREW | 11-20890 | |
27 | CAP, NYLON - THROTTLE ACTUATOR COLLAR ADJUSTING SCREW | 52023 | |
28 | PLATE, THROTTLE ACTUATOR | 48671 | |
29 | SCREW, THROTTLE ACTUATOR PLATE TO ECONOMIZER COLLAR (1") | 10-37892 | |
30 | WASHER, THROTTLE ACTUATOR PLATE FASTENING SCREW | 12-847883 | 12-20128 |
31 | LOCKWASHER, THROTTLE ACTUATOR PLATE FASTENING SCREW | 13-26996 | |
32 | SPACER, THROTTLE ACTUATOR PLATE SCREW | 23-48674 | |
33 | CAM, THROTTLE ACTUATOR PLATE | 54239 | |
34 | WASHER, ADAPTOR - DISTRIBUTOR HOUSING | 12-46246 | |
35 | ADAPTOR ASSEMBLY, DISTRIBUTOR | 66165A2 | |
36 | FITTING, GREASE - DISTRIBUTOR ADAPTOR | 22-25094 | |
37 | SCREW, DISTRIBUTOR HOUSING TO CRANKCASE (1 1/2") | 10-78841 | |
38 | WASHER, DISTRIBUTOR HOUSING SCREW | 12-20084 | |
39 | NUT, DISTRIBUTOR HOUSING SCREW | 11-22053 | |
40 | BRACKET, STOP | 55805 | |
41 | STUD, DISTRIBUTOR ADAPTOR TO STOP BRACKET | 16-20956 | |
42 | WASHER, STOP BRACKET FASTENING STUD | 12-24662 | |
43 | NUT, STOP BRACKET FASTENING STUD | 11-826709109 | 11-33825, 11-35045 |
44 | SCREW, STOP BRACKET ADJUSTING (1 7/8") | 10-24228 | |
45 | NUT, STOP BRACKET ADJUSTING SCREW | 11-20890 | |
46 | CAP, NYLON - STOP BRACKET ADJUSTING SCREW | 52023 | |
47 | WASHER, DISTRIBUTOR HOUSING | 12-27939 | |
48 | TAB WASHER, ADAPTOR CAP FASTENING | 14-27960 | |
49 | WASHER, WAVE - DISTRIBUTOR BALL BEARING TENSION | 13-27959 | |
50 | CAP, DISTRIBUTOR HOUSING | 54567 | |
51 | SPACER, DRIVE PULLEY | 23-47250 | |
52 | DRIVEN PULLEY ASSEMBLY | 29906A1 | |
53 | PIN, ROLL - FLANGE LOCATING | 17-29908 | |
54 | FLANGE, DRIVEN PULLEY | 29907 | |
55 | KEY, DISTRIBUTOR DRIVER | 28-29910 | |
56 | SCREW, PULLEY CLAMPING SCREW | 10-64652 | |
57 | BELT, TIMING | 20140 |
DISTRIBUTOR HOUSING AND ROTOR
Back to TopBelow is the parts list for Mercury 1250BP DISTRIBUTOR HOUSING AND ROTOR:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | BALL BEARING, DISTRIBUTOR HOUSING (UPPER) | 30-20066 | |
2 | NUT, ROTOR SHAFT TO DISTRIBUTOR HOUSING | 11-54209 | |
3 | SLEEVE, ROTOR SHAFT | 23-53539 | |
4 | HOUSING ASSEMBLY, DISTRIBUTOR | 393-3736A79 | |
5 | GROUND STRAP ASSEMBLY, DISTRIBUTOR TO CRANKCASE | 53417 | |
6 | SCREW, GROUND STRAP ATTACHING (3/8") | 10-62568 | |
7 | ELBOW, VENT - DISTRIBUTOR HOUSING | 22-55262 | |
8 | BALL BEARING, DISTRIBUTOR HOUSING (LOWER) | 30-26379 | |
9 | SPACER, ROTOR SHAFT | 23-53538 | |
10 | RING, RETAINING - HALL BEARING TO DISTRIBUTOR HOUSING | 53-26406 | |
11 | DISC, ROTOR | 393-4248 | |
12 | ROTOR, DISTRIBUTOR | 393-4371 | |
13 | CLAMP, DISTRIBUTOR CAP TO DISTRIBUTOR HOUSING | 54-59588 | |
14 | SCREW, DISTRIBUTOR CAP CLAMP (1 1/4") | 10-55943 | |
15 | NUT, DISTRIBUTOR CAP CLAMP SCREW | 11-26768 | |
16 | HOSE, VENT - DISTRIBUTOR TO ELBOW (11 1/2") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
16 | HOSE, VENT - DISTRIBUTOR TO ELBOW (13 1/2") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
17 | ELBOW, VENT HOSE TO BOTTOM COWL | 22-31521 | |
18 | HIGH TENSION CABLE ASSEMBLY, DISTRIBUTOR CAP TO COIL | 84-821945A5 | |
19 | GROMMET, HIGH TENSION CABLE | 25-26547 | |
20 | BOOT, HIGH TENSION CABLE TO COIL | 332-2854T01 | |
21 | SLEEVE, HIGH TENSION CABLE | 85-94589 | |
22 | DISTRIBUTOR CAP ASSEMBLY Comment: A-27-55896 GASKET, DISTRIBUTOR CAP | 393-4841A2 | |
-- | BRUSH AND SPRING ASSEMBLY | 393-1293A1 | |
23 | ELBOW, VENT - DISTRIBUTOR CAP | 22-31521 | |
24 | SPARK PLUG (CHAMPION - L19V) | 33-896329827 | 33-827C |
25 | SPARK PLUG LEAD ASSEMBLY #1,#2,#3,#4,#5 AND #6 | 84-813715A1 | |
-- | CONNECTOR, SPARK PLUG LEAD | 8M0084600 | 20121 |
26 | PROTECTOR, SPARK PLUG LEAD | 85-63709A1 | |
27 | SLEEVE, SPARK PLUG LEAD TO DISTRIBUTOR | 85-94589 | |
28 | GROMMET, SPARK PLUG LEADS | 25-26547 | |
29 | WIRE RETAINER, HIGH TENSION LEADS | 45409 | |
30 | BRACKET, FRONT - WIRE RETAINER | 45392 | |
31 | BRACKET, REAR - WIRE RETAINER | 47398 | |
32 | SCREW, FRONT AND REAR BRACKET ATTACHING | 10-62568 | |
33 | SPACER, RUBBER - HIGH TENSION LEADS | 45391 | |
34 | IGNITION COIL ASSEMBLY, COMPLETE | 332-4895A5 | |
35 | SCREW, COIL MOUNTING BRACKET (7/8") | 10-69026 | |
36 | LOCKWASHER, COIL MOUNTING BRACKET | 13-26992 | |
37 | SCREW, COIL MOUNTING BRACKET (2 1/2") | 10-37561 | |
38 | NUT, COIL MOUNTING BRACKET SCREW | 11-8M0207775 |
DRIVE SHAFT HOUSING ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP DRIVE SHAFT HOUSING ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | DRIVE SHAFT HOUSING (SHORT SHAFT) | 1558-3756 | |
1 | DRIVE SHATF HOUSING (LONG SHAFT) | 1570-3757 | |
2 | WASHER, SPACER STUD | 12-45176 | |
3 | NUT, SPACER STUD | 11-8M0204653 | |
4 | PLATE, HEAT SHIELD (SHORT SHAFT) | 52107 | |
4 | PLATE, HEAT SHIELD (LONG SHAFT) | 53806 | |
5 | SHIFT DETENT ASSEMBLY | 48921A1 | |
6 | SCREW, SHIFT DETENT TO DRIVE SHAFT HOUSING (1 1/8") | 10-21091 | |
7 | NUT, SHIFT DETENT SCREW | 11-8267089 | |
8 | WASHER, POWERHEAD STUDS | 12-20086 | |
9 | NUT, POWERHEAD STUDS (2/8-24) | 11-8M0204726 | |
9 | NUT, POWERHEAD STUDS (3/8-24) | 11-23161 | |
10 | NUT, POWERHEAD STUDS ( 5/16-24) | 11-82670911 | |
11 | TUBE, WATER INLET(SHORT SHAFT) | 32-48905 | |
11 | TUBE, WATER INLET (LONG SHAFT) | 32-53775 | |
12 | COVER, TRIM - DRIVE SHAFT HOUSING | 37417 | |
13 | SCREW, TRIM COVER TO BOTTOM COWL (1/2") | 34571 | |
14 | SEAL, TRIM COVER TO DRIVE SHAFT HOUSING | 37919 | |
15 | STRIP RETAINING - TRIM COVER SEAL (SIDE) | 37665 | |
16 | SCREW, RETAINING STRIP TO DRIVE HOUSING ( 5/8") | 10-48409 | |
17 | STRIP, RETAINING - TRIM COVER SEAL (REAR) | 38052 | |
18 | SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (1/2") | 10-48408 |
FLYWHEEL ASSEMBLY AND STATOR
Back to TopBelow is the parts list for Mercury 1250BP FLYWHEEL ASSEMBLY AND STATOR:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | PLUG, FLYWHEEL PULLER THREADS | 19-45907 | |
2 | NUT, FLYWHEEL Comment: PART OF A-436-3760A2 AND A-435-3803A2 CRANKSHAFT ASS'Y | 11-52901 | |
3 | WASHER, FLYWHEEL NUT | 12-33001 | |
4 | FLYWHEEL ASSEMBLY, COMPLETE | 225-2494A37 | |
5 | SCREW, FLEXIBLE PLATE TO FLYWHEEL (5/8") | 10-32417 | |
6 | SCREW, PLATE AND HUB TO FLEXIBLE PLATE (3/4") | 10-68997 | |
7 | PIN, DOWEL - PULLEY TO FLYWHEEL | 17-26618 | |
8 | FLANGE, FLYWHEEL PULLEY | 29788 | |
9 | PULLEY, FLYWHEEL | 30306 | |
10 | HUB, FLYWHEEL PULLEY | 29787 | |
11 | STATOR ALTERNATOR | 398-3633 | |
12 | TERMINAL, STATOR LEAD WIRE | 30050 | |
13 | SCREW, STATOR TO UPPER END CAN (7/8") | 10-57021 | |
14 | CLIP, STATOR LEAD FASTENING (7/16") | 54-22875 | |
14 | CLIP, STATOR/WIRING HARNESS LEADS FASTENING (5/16") | 54-26550 | |
15 | SCREW, STATOR LEAD CLIP FASTENING | 10-62568 | |
16 | "D" WASHER, CLIP FASTENING SCREW | 8M0084613 | 69205 |
FUEL PUMP AND FUEL LINE ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP FUEL PUMP AND FUEL LINE ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | COVER, FUEL PUMP MOUNT | 26083 | |
2 | SCREW,COVER ATTACHING | 10-28711 | |
3 | FUEL PUMP ASSEMBLY - UPPER | 53123A4 | |
4 | CHECK VALVE ASSEMBLY | 21-30430A1 | |
5 | DIAPHRAGM KIT | 23014A1 | |
6 | GASKET, CHECK VALVE TO HOUSING (#) | ||
7 | GASKET, FUEL PUMP (#) | ||
8 | GASKET, FUEL PUMP COVER (#) | ||
9 | RETAINER,CHECK VALVE | 23004 | |
10 | SCREW, RETAINER TO HOUSING | 10-43725 | |
11 | FUEL PUMP ASSEMBLY - LOWER | 54817A3 | |
4 | CHECK VALVE ASSEMBLY | 21-30430A1 | |
5 | DIAPHRAGM KIT | 23014A1 | |
6 | GASKET, CHECK VALVE TO HOUSING (#) | ||
7 | GASKET, FUEL PUMP (#) | ||
8 | GASKET, FUEL PUMP COVER (#) | ||
9 | RETAINER, CHECK VALVE | 23004 | |
10 | SCREW, RETAINER TO HOUSING | 10-43725 | |
12 | SCREW, FUEL PUMP MOUNTING (1 1/2") | 10-73013 | |
13 | SCREW, FUEL PUMP MOUNTING (1 7/8") | 10-30273 | |
14 | FUEL LINE ASSEMBLY, PUMP TO CARBURETOR (9 7/8") | 32-32256A1 | |
15 | ELBOW, UPPER CARBURETOR STRAINER COVER (90) | 22-30174 | |
16 | SLEEVE, CARBURETOR STRAINER COVER ELBOW | 22-30175 | |
17 | NUT, UPPER CARBURETOR STRAINER COVER ELBOW | 22-30177 | |
18 | CLIP, FUEL LINE TO CYLINDER BLOCK | 54-22627 | |
19 | SCREW, FUEL LINE CLIP TO CYLINDER BLOCK (3/8") | 10-62568 | |
20 | "D" WASHER, FUEL LINE CLIP SCREW | 8M0084613 | 69205 |
21 | PLUG, PIPE - FUEL PUMP | 22-328022 | |
22 | FUEL LINE ASSEMBLY, PUMP TO CARBURETOR | 32-54739A1 | |
23 | FUEL LINE ASSEMBLY, PUMP TO PUMB (14") | 32-52943A1 | |
24 | "Y" FITTING, UPPER FUEL PUMP | 22-54818 | |
25 | CONNECTOR, "Y" FITTING | 22-30468 | |
26 | SLEEVE, "Y" FITTING CONNECTOR | 22-30175 | |
27 | NUT, "Y" FITTING CONNECTOR | 22-30177 | |
28 | FUEL LINE, ADAPTOR TO LOWER FUEL PUMP (18") | 32-30176 | |
29 | ADAPTOR, CHECK UNIT (FUEL LINE) | 30186 | |
30 | STEM, CHECK UNIT ADAPTOR | 30187 | |
31 | "O" RING, ADAPTOR STEM | 25-16524 | |
32 | SPRING, ADAPTOR STEM | 24-30189 | |
33 | CUP WASHER, ADAPTOR | 30188 | |
34 | SCREW, ADAPTOR TO BOTTOM COWL (2 1/2") | 10-37561 | |
35 | NUT, ADAPTOR FASTENING SCREW | 11-8M0207775 | |
36 | FUEL LINE ASSEMBLY, CARBURETOR TO CARBURETOR | 32-31584A1 | |
37 | ELBOW, FUEL LINE TO CARBURETOR (45) | 29086 |
GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1)
Back to TopBelow is the parts list for Mercury 1250BP GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1):

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | DRIVE SHAFT (SHORT SHAFT) | 45-56345 | |
1 | DRIVE SHAFT (LONG SHAFT) | 45-56346 | |
2 | CARRIER, "O" RING-DRIVE SHAFT COUPLING | 54196A6 | |
3 | "O" RING, DRIVE SHAFT COUPLING | 25-35126 | |
- | GEAR HOUSING ASSEMBLEY, COMPLETE Comment: RIGHT HAND ROTATION-MERC 1000BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4109A3 | |
- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: LEFT HAND ROTATION-MERC 1000BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4108A3 | |
- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: RIGHT HAND ROTATION-MERC 1250BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4109A4 | |
- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: LEFT HAND ROTATION-MERC 1250BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4108A4 | |
4 | SPACER ASSEMBLY, COMPLETE | 53864A1 | |
5 | STUD, SPACER TO FACE PLATE (1 1/8") | 16-25385 | |
6 | OIL SEAL, SHIFT SHAFT-SPACER (1 3/4" O.D.) | 26-24590 | |
7 | OIL SEAL, SHIFT SHAFT-SPACER (1 9/16" O.D.) | 26-892361 | |
8 | WASHER, RUBBER-SHIFT SHAFT | 12-31266 | |
9 | PIN, DOWEL-SPACER TO WATER PUMP | 17-35973 | |
10 | STUD, SPACER TO WATER PUMP (2 7/16") | 16-30717 | |
11 | OIL SEAL, SPACER-LOWER | 26-56788 | |
13 | PLUG, PIPE-SPACER | 22-390721 | |
14 | STUD, SPACER TO DRIVE SHAFT HOUSING (2 3/16") | 16-8M0034453 | 16-57933 |
16 | SPACER, DRIVEN GEAR | 23-56358 | |
17 | SHIM ASSEMBLY, DRIVEN GEAR | 15-26320A1 | |
18 | CAM, SHIFT | 53276 | |
19 | WASHER ASSEMBLY, SHIFT CAM | 12-55154A1 | |
20 | SPRING, SHIFT CAM | 24-53277 | |
21 | COVER, SHIFT PIVOT | 48909 | |
22 | SPRING, SHIFT FORK | 24-55089 | |
23 | SCREW, SHIFT FORK | 10-55090 | |
24 | NUT, SHIFT FORK SCREW | 11-826709109 | 11-33825, 11-35045 |
25 | SCREW, PIVOT COVER TO GEAR HOUSING | 10-53099 | |
26 | LOCKWASHER, SHIFT PIVOT COVER SCREW | 13-26992 | |
27 | SHIFT FORK, SLIDING CLUTCH | 48908 | |
28 | COLLAR, SHIFT-RATCHET | 48922 | |
29 | RATCHET, SLIDING CLUTCH | 52-48906 | |
30 | GEAR ASSEMBLY, DRIVE (1:1 GEAR RATIO) | 43-48896A1 | |
30 | GEAR ASSEMBLY, DRIVE (1.25:1 GEAR RATIO) | 43-48897A1 | |
30 | GEAR ASSEMBLY, DRIVE (1.5:1 GEAR RATIO) Comment: STANDARD ON MERC 1250BP | 43-48898A1 | |
30 | GEAR ASSEMBLY, DRIVE (1.75:1 GEAR RATIO) Comment: STANDARD ON MERC 1000BP | 43-48900A1 | |
30 | GEAR ASSEMBLY, DRIVE (2:1 GEAR RATIO) | 43-48895A1 | |
31 | ROLLER BEARING, DRIVE GEAR | 31-21700 | |
32 | BALL BEARING, DRIVE GEAR | 30-48916 | |
33 | SHIM ASSEMBLY, DRIVE GEAR BEARING TO SPACER | 15-34810A1 | |
34 | RETAINER, DRIVE SHAFT BEARING | 48919 | |
35 | SCREW, RETAINER TO SPACER (1 1/8") | 10-28667 | |
36 | LOCKWASHER, RETAINER SCREW | 13-21272 | |
37 | MAGNET, RETAINER SCREW | 52172 | |
38 | SPACER, DRIVEN GEAR | 23-48927 | |
39 | ROLLER BEARING ASSEMBLY, TAPERED-DRIVEN GEAR | 31-48941A1 | |
40 | BEARING, THRUST-DRIVE SHAFT | 31-48913 | |
41 | DRIVE SHAFT, INPUT | 45-48877 | |
42 | WASHER, THRUST-DRIVE SHAFT | 12-48912 | |
43 | SHIM ASSEMBLY, DRIVE GEAR BEARING TO SPACER | 15-53325A1 | |
44 | "O" RING, ADAPTOR FLANGE | 25-48910 | |
45 | "O" RING, WATER INLET TUBE | 25-8M0204645 | |
46 | COVER, SPACER-FRONT | 53869 | |
47 | GASKET, SPACER TO FACE PLATE | 27-48892 | |
48 | PLATE, FACE-SPACER TO WATER PUMP | 48893 | |
49 | IMPELLER, WATER PUMP | 47-89984T4 | |
50 | PIN, IMPELLER DRIVING | 17-8M0214994 | |
51 | GASKET, FACE PLATE TO WATER PUMP | 27-48923 | |
52 | WATER PUMP ASSEMBLY | 46-48881A1 | |
53 | INSERT, WATER PUMP | 30915 | |
54 | OIL SEAL, WATER PUMP | 26-16977 | |
55 | SEAL, WATER PUMP INLET | 26-38970 | |
56 | SLEEVE, WATER TUBE GUIDE | 23-29804T | |
57 | NUT, WATER PUMP AND FACE PLATE STUDS | 11-8267089 | |
58 | SLINGER, WATER PUMP-DRIVE SHAFT | 25-8M0214918 |
GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2)
Back to TopBelow is the parts list for Mercury 1250BP GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2):

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
-- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: RIGHT HAND ROTATION-MERC 1000BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4109A3 | |
-- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: LEFT HAND ROTATION-MERC 1000BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4108A3 | |
-- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: RIGHT HAND ROTATION-MERC 1250BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4109A4 | |
-- | GEAR HOUSING ASSEMBLY, COMPLETE Comment: LEFT HAND ROTATION-MERC 1250BP NOTE: GEAR HOUSING ASSEMBLIES, COMPLETE, INCLUDE ALL PARTS FROM REFERENCE #4 THRU REFERENCE #127 AS LISTED ON G4 AND G6 | 1638-4108A4 | |
59 | GEAR HOUSING ASSEMBLY (MERC 1000BP) | 1638-4109A1 | |
59 | GEAR HOUSING ASSEMBLY (MERC 1250BP) | 1638-4108A1 | |
60 | PLUG, PIPE (1/4-18 THREAD) | 22-8M0180564 | |
62 | STUD, GEAR HOUSING TO SPACER (2 3/8") | 16-32129 | |
63 | STUD,GEAR HOUSING TO SPACER (3 3/4") | 16-49082 | |
64 | ROLLER BEARING, DRIVE SHAFT | 31-48937 | |
65 | ELBOW, OIL TUBE (45 ) | 22-49523 | |
66 | SCREW, VENT AND FILLING | 10-79953Q04 | |
67 | WASHER, SEALING-VENT AND FILLING SCREW | 12-191833 | |
68 | ROLLER BEARING, PROPELLER SHAFT | 31-30956T | |
69 | OIL SEAL, PROPELLER SHAFT | 26-55285 | |
70 | WASHER, SPLINED-PROPELLER NUT | 12-39701 | |
71 | WASHER, PLAIN-PROPELLER NUT | 12-39698 | |
72 | NUT, PROPELLER | 11-859126 | 11-49252 |
73 | PROPELLER SHAFT | 44-48882 | |
74 | SPACER, PROPELLER SHAFT | 23-56802 | |
75 | SHIM ASSEMBLY, PROPELLER SHAFT | 15-20929A1 | |
76 | ROLLER BEARING ASSEMBLY, TAPERED-REAR | 31-38146A1 | |
77 | ADATPOR ASSEMBLY, PROPELLER SHAFT | 57206A1 | |
78 | ROLLER BEARING ADAPTOR | 31-54043 | |
78 | ROLLER BEARING, ADAPTOR | 31-54043 | |
79 | GEAR, PROPELLER SHAFT-REAR Comment: RIGHT HAND ROTATION | 43-48885 | |
80 | SPACER, PROPELLER SHAFT-LONG Comment: RIGHT HAND ROTATION | 23-57205 | |
81 | GEAR, DOUBLE BEVEL-PROPELLER SHAFT Comment: RIGHT HAND ROTATION | 43-48890 | |
82 | SPACER, PROPELLER SHAFT-SHORT Comment: RIGHT HAND ROTATION | 23-48934 | |
83 | WASHER, PROPELLER SHAFT Comment: LEFT HAND ROTATION | 12-49808 | |
84 | SPACER, PROPELLER SHAFT-SHORT Comment: LEFT HAND ROTATION | 23-49809 | |
85 | GEAR, DOUBLE BEVEL-PROPELLER SHAFT Comment: LEFT HAND ROTATION | 43-48890 | |
86 | SPACER, PROPELLER SHAFT-LONG Comment: LEFT HAND ROTATION | 23-57205 | |
87 | GEAR, PROPELLER SHAFT Comment: LEFT HAND ROTATION | 43-48949 | |
88 | ROLLER BEARING ASSEMBLY, TAPERED-PROPELLER SHAFT | 31-38135A1 | |
89 | WASHER, PROPELLER SHAFT | 12-48933 | |
90 | NUT, PROPELLER SHAFT | 11-8M2014641 | 11-826713 23 |
91 | SPACER, BEARING RETAINER TO GEAR HOUSING | 23-48932 | |
92 | NUT, BEARING RETAINER | 11-48931 | |
93 | ANCHOR STUD, BEARING RETAINER | 48942 | |
94 | "O" RING, ANCHOR STUD | 25-8M0204651 | |
95 | WASHER, ANCHOR STUD | 12-48930 | |
96 | RING, SNAP-ANCHOR STUD TO GEAR HOUSING | 53-48928 | |
97 | COVER, GEAR HOUSING | 48929 | |
98 | PIN, NOSE CONE LOCATING | 17-30282 | |
99 | CONE, NOSE-GEAR HOUSING | 48904 | |
100 | SCREW, NOSE CONE TO GEAR HOUSING | 10-39703 | |
101 | WASHER, GEAR HOUSING STUDS | 12-45176 | |
102 | NUT, GEAR HOUSING STUDS | 11-8M0204653 | |
103 | "O" RING, GEAR HOUSINF STUD | 25-45719 | |
104 | PLATE ASSEMBLY, COVER | 49526A1 | |
105 | ELBOW, PLATE TO OIL TUBE (90 ) | 22-49521 | |
106 | TUBE, OIL-GEAR HOUSING TO COVER PLATE | 32-54989 | |
107 | SCREW, COVER PLATE TO GEAR HOUSEING (1") | 10-49527 | |
108 | LOCKWASHER, COVER PLATE SCREW | 13-21272 | |
109 | WASHER, COVER PLATE SCREW | 12-39143 | |
110 | GEAR, PINION-DRIVE SHAFT(LOWER) | 43-48886 | |
111 | NUT, LOCK-PINION GEAR TO DRIVE SHAFT | 11-49253 | |
112 | DRIVE SHAFT, REAR | 45-48880 | |
113 | SHIM ASSEMBLY, REAR DRIVE SHAFT | 15-8M0063268 | |
114 | ROLLER BEARING ASSEMBLY, TAPERED-REAR DRIVE SHAFT | 31-48939A1 | |
115 | GEAR ASSMBLY, DRIVE SHAFTS | 43-48887A1 | |
116 | DRIVE SHAFT, CENTER | 45-48879 | |
117 | SHIM ASSEMBLY, CENTER DRIVE SHAFT | 15-24542A1 | |
118 | BALL BEARING, CENTER DRIVE SHAFT | 30-53280 | |
119 | WASHER, CENTER DRIVE SHAFT | 12-35981 | |
120 | NUT, GEAR TO CENTER DRIVE SHAFT | 11-8M0214915 | |
121 | DRIVE SHAFT, FRONT | 45-48878 | |
122 | SHIM ASSEMBLY, FRONT DRIVE SHAFT | 15-20929A1 | |
123 | BALL BEARING, FRONT DRIVE SHAFT | 30-53279 | |
124 | NUT, GEAR TO FRONT DRIVE SHAFT | 11-30932 | |
125 | RETAINER, BEARING | 48891 | |
126 | SCREW, BEARING RETAINER TO GEAR HOUSING (3/4") | 10-53099 | |
127 | LOCKWASHER, BEARING RETAINER SCREW | 13-26992 |
MISCELLANEOUS PARTS/ACCESSORIES
Back to TopBelow is the parts list for Mercury 1250BP MISCELLANEOUS PARTS/ACCESSORIES:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
- | GASKET SET (MERC 1000BP AND 1250 BP) | 27-48892A1 | |
- | DECAL SET (MERC 1000BP AND 1250BP) | 37-55287A1 | |
- | TACHOMETER ASSEMBLY | 53667A1 | |
- | REVERSE THROTTLE LIMIT KIT | 49248A1 |
STARTER MOTOR ASSEMBLY
Back to TopBelow is the parts list for Mercury 1250BP STARTER MOTOR ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
- | STARTER MOTOR ASSEMBLY, COMPLETE (PRESTOLITE) | 50-55304A1 | |
1 | NUT, PINION STOP COLLAR | 11-8M0143423 | |
2 | MOTOR DRIVE | 32406 | |
3 | SPRING, TENSION - MOTOR DRIVE | 24-32407 | |
4 | PLATE ASSEMBLY, DRIVE END | 392-3693 | |
5 | BUSHING, DRIVE END PLATE | 392-2518 | |
6 | ARMATURE | 392-3906 | |
7 | PACKAGE, ARMATURE THRUST WASHER | 392-2523 | |
8 | FRAME AND FIELD ASSEMBLY | 392-3407 | |
9 | BRUSH AND TERMINAL SET | 392-2521 | |
10 | SPRING SET, BRUSH (2 SPRINGS PER SET) | 392-2514 | |
11 | BRUSH PLATE AND HOLDER ASSEMBLY | 392-2519 | |
12 | END CAP ASSEMBLY, COMMUTATOR | 392-3692 | |
-- | BUSHING, COMMUTATOR END CAP | 392-2516 | |
13 | STUD, STARTER MOTOR MOUNTING (1 3/16") | 16-64936 | |
14 | BOLT, THRU - END CAP TO END PLATE (5/16 -13) | 392-3694 | |
15 | LOCKWASHER, THRU BOLT | 13-8M0204647 | |
16 | NUT, THRU BOLT | 11-82670911 |
STARTER MOTOR, STARTER SOLENOID, RECTIFIER AND WIRING HARNES
Back to TopBelow is the parts list for Mercury 1250BP STARTER MOTOR, STARTER SOLENOID, RECTIFIER AND WIRING HARNES:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | WIRING HARNESS, INTERNAL | 84-69236A1 | |
2 | CLAMP, WIRING HARNESS TO BOTTOM COWL | 54-76368 | |
3 | SCREW, WIRING HARNESS CLAMP TO BOTTOM COWL (7/8") | 10-45862 | |
4 | LOCKWASHER, WIRING HARNESS CLAMP SCREW | 13-26996 | |
5 | WASHER, WIRING HARNESS CLAMP SCREW | 12-847883 | 12-20128 |
6 | SPRING, GARTER - INTERNAL WIRING HARNESS | 24-28975 | |
7 | SCREW, GROUND WIRE TO BOTTOM COWL (1/2") | 10-98256 | |
8 | LOCKWASHER, GROUND WIRE SCREW | 13-24669 | |
9 | GROMMET, RECTIFIER TO SWITCH BOX WIRE | 25-26547 | |
10 | CLIP, WIRING HARNESS TO FRONT BRACKET (1/8") | 54-648552 | |
11 | TERMINAL BLOCK, STATOR LEADS | 45559 | |
12 | SCREW, TERMINAL BLOCK FASTENING (5/8") | 10-48409 | |
13 | SCREW, STATOR LEADS TO TERMINAL BLOCK (3/8") | 10-62568 | |
14 | SWITCH BOX ASSEMBLY (MERC 1000BP) | 332-2986A9 | |
14 | SWITCH BOX ASSEMBLY (MERC 1250BP) | 332-2986A7 | |
15 | WASHER, SWITCH BOX TERMINAL | 12-45075 | |
16 | NUT, SWITCH BOX TERMINAL | 11-45076 | |
17 | SCREW, SWITCH BOX (3/8") | 10-45218 | |
18 | SCREW, SWITCH BOX TO FRONT MOUNTING BRACKET (1") | 10-64279 | |
19 | NUT, SWITCH BOX SCREW | 11-8M0207775 | |
20 | CABLE, WIRE - STARTER MOTOR TO FRONT SUPPORT BRACKET | 84-93389A12 | |
21 | SCREW, WIRE CABLE TO STARTER MOTOR | 10-69035 | |
22 | STARTER MOTOR ASSEMBLY (SEE E14 FOR BREAKDOWN) | 50-55304A1 | |
23 | SCREW, STARTER MOTOR TO CRANKCASE FLANGE (1 1/2") | 10-73657 | |
24 | SCREW, STARTER MOTOR TO CRANKCASE FLANGE (1 3/8") | 10-31984 | |
25 | LOCKWASHER, STARTER MOTOR SCREW | 13-8M0204647 | |
26 | BRACKET, STARTER MOTOR SUPPORT | 53507 | |
27 | WASHER, STARTER MOTOR MOUNTING STUD | 12-26168 | |
28 | NUT, STARTER MOTOR MOUNTING STUD | 11-82670911 | |
29 | LOCKWASHER, STARTER MOTOR TERMINAL | 13-26992 | |
30 | NUT, STARTER MOTOR TERMINAL | 11-20890 | |
31 | SOLENOID, STARTER | 25661T1 | |
32 | SCREW, SOLENOID TO COIL BRACKET (3/4") | 1397-2125 | |
33 | LOCKWASHER, STARTER SOLENOID FASTENING SCREW | 13-26992 | |
34 | BUMPER, RUBBER - STARTER SOLENOID | 269011 | |
35 | LOCKWASTER, SOLENOID TERMINAL | 10,13-26996 | |
36 | NUT, SOLENOID TERMINAL | 10,11-68219 | |
37 | CABLE, WIRE - STARTER MOTOR TO SOLENOID | 48396 | |
38 | LOCKWASHER, SOLENOID TERMINAL ( 5/16") | 13-8M0204647 | |
39 | NUT, SOLENOID TERMINAL (5/16") | 11-22053 | |
40 | BOOT, SOLENOID TERMINAL | 46265 | |
41 | RECTIFIER ASSEMBLY | 78614A1 | |
42 | SCREW, RECTIFIER TO MOUNTING BRACTER (1") | 10-64278 | |
43 | NUT, RECTIFIER MOUNTING SCREW | 11-8M0207775 | |
44 | WASHER, RECTIFIER STATOR LEAD TERMINAL | 12-45075 | |
45 | NUT, FASTENING - RECTIFIER STATOR LEADS | 11-45076 |
TOP COWL AND SUPPORT BRACKETS
Back to TopBelow is the parts list for Mercury 1250BP TOP COWL AND SUPPORT BRACKETS:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | COWL, TOP | 2114-3806 | |
2 | RETAINER ASSEMBLY, TOP COWL | 52733A9 | |
3 | PAD, BUMPER - TOP COWL RETAINER | 35496 | |
4 | SCREW, RETAINER TO TOP COWL (1 1/4'') | 10-74824 | |
5 | LOCKWASHER, RETAINER TO TOP COWL SCREW | 13-39107 | |
6 | SHIELD, TOP COWL - REAR | 76370 | |
7 | SCREW, SHIELD TO TOP COWL (5/8'') | 10-37370 | |
8 | LOCKWASHER, SHIELD SCREW | 13-37371 | |
9 | ROPE, STARTER (FOR MANUAL STARTING ONLY) | 47341A11 | |
10 | HINGE, COWL LATCH - TOP COWL | 52739 | |
11 | LEVER, COWL LATCH HINGE | 94918F1 | |
12 | PIN, ROLL - COWL LATCH LEVER TO HINGE | 17-58998 | |
13 | SPRING, COWL LATCH HINGE | 24-53019 | |
14 | HOOK, TOP COWL LATCH - REAR | 55455 | |
15 | SCREW, REAR HOOK TO TOP COWL (7/8") | 10-22956 | |
16 | LOCKWASHER, REAR HOOK MOUNTING SCREW | 13-26992 | |
17 | FRAME, TOP COWL SUPPORT | 48825 | |
18 | MOUNT, RUBBER-TOP COWL FRAME | 90435 | |
18 | MOUNT, RUBBER - TOP COWL FRAME | 46096 | |
19 | NUT, RUBBER MOUNT TO TOP COWL FRAME | 11-8267089 | |
19 | NUT, RUBBER MOUNT TO TOP COWL FRAME | 11-82670911 | |
20 | BRACKET, TOP COWL SUPPORT - REAR | 54685 | |
21 | MOUNT, RUBBER - REAR SUPPORT BRACKET | 31014 | |
22 | LOCKWASHER, RUBBER MOUNT TO REAR SUPPORT BRACKET | 13-26992 | |
23 | WASHER, RUBBER MOUNT TO REAR SUPPORT BRACKET | 12-69057 | |
24 | NUT, RUBBER MOUNT TO REAR SUPPORT BRACKET | 11-20088 | |
25 | SCREW, REAR BRACKET TO TOP COWL FRAME (1") | 10-26065 | |
26 | NUT, REAR BRACKET SCREW | 11-29250 | |
27 | SCREW,REAR BRACKET TO BOTTOM COWL (1") | 10-35386 | |
28 | LOCKWASHER, REAR SUPPORT BRACKET SCREW | 13-8M0204647 | |
29 | BRACKET ASSEMBLY, TOP COWL SUPPORT - FRONT | 77116A1 | |
30 | SCREW, FRONT BRACKET TO BOTTOM COWL (1 1/2") | 10-78841 | |
31 | NUT, FRONT SUPPORT BRACKET SCREW | 11-29250 | |
32 | SCREW, FRONT BRACKET TO TOP COWL SCREW FRAME (1 1/2") | 10-73657 | |
33 | LOCKWASHER, FRONT SUPPORT BRACKET SCREW | 13-8M0204647 | |
34 | MOUNT, RUBBER - FRONT SUPPORT BRACKET | 37640 | |
35 | LOCKWASHER, RUBBER MOUNT TO FRONT SUPPORT BRACKET | 13-8M0204647 | |
36 | NUT, RUBBER MOUNT TO FRONT SUPPORT BRACKET | 11-22053 |
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For Mercury Owners:
To assist you in maintaining and repairing your marine engines, we hope the following resources may be of use:
-
Mercury / Mercruiser / Mariner Parts from JLM Marine
- Mercury Thermostat
- Mercury Water Pump
- Mercury Water Pump Impeller
- Mercury Water Pump Impeller Kit
- Mercury Carburetor
- Mercury Carburetor Repair Kit
- Mercury Fuel Pump
- Mercury Fuel Pump Kit
- Mercury Air Filter
- Mercury Oil Filter
- Mercury Oil Seal
- Mercury Fuel Filter
- Mercury Gasket
- Mercury Relay
- Mercury Ignition Switch
- Mercury Trim Tilt Switch
- Mercury Ignition Sensor
- Mercury Spark Plug Wire
- Mercury Water Distribution Housing
- Mercury Bellow
- Mercury Bellows Kit
- Mercury Serpentine Pulley
- Mercury Accessories
- Mercury Belt
- Mercury Oil Plug
- Mercury Drain Plug
- Mercury Bellows Replacement Tool
About JLM Marine
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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