Mercury 40, 4 (GNAT 2 CYL.) (7085673 THRU 7146487) Outboard Motor Parts Diagram & Catalog – Free PDF Download
BOTTOM COWL
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) BOTTOM COWL:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | BOTTOM COWL (SERIAL #9141798 AND BELOW) | 2154-7603 | |
1 | BOTTOM COWL (SERIAL #9141799 AND UP) | 2154-7603 | |
2 | MOLDING, BOTTOM COWL (2" - 6-1/2" - 15") | 714933 | |
3 | COVER, BOTTOM COWL | 70455 | |
4 | SCREW, COVER TO BOTTOM COWL (7/16") | 10-69079 | |
5 | HANDLE, SHIFT SERIAL Comment: #9210545 AND BELOW | 86056A1 | |
6 | SHAFT, SHIFT Comment: #9210545 AND BELOW | 86056A1 | |
7 | SCREW, SHIFT HANDLE TO SHAFT (1 3/8") Comment: #9210545 AND BELOW | 10-70182 | |
8 | LOCKWASHER, SHIFT HANDLE SCREW Comment: #9210545 AND BELOW | 13-26994 | |
5 | HANDLE, SHIFT SERIAL Comment: #9210546 AND UP | 86055T | |
6 | SHAFT, SHIFT Comment: #9210546 AND UP | 86056A1 | |
7 | SCREW, SHIFT HANDLE TO SHAFT (1 1/4") Comment: #9210546 AND UP | 10-69560 | |
8 | LOCKWASHER, SHIFT HANDLE SCREW Comment: #9210546 AND UP | 13-26996 | |
9 | CAM, SHIFT DETENT | 66414 | |
10 | ROLL PIN, CAM TO SHIFT SHAFT | 17-25905 | |
11 | BUSHING, SHIFT SHAFT | 23-26856 | |
12 | "O" RING, SHIFT SHAFT | 25-16524 | |
13 | ARM, SHIFT | 72733 | |
14 | SET SCREW, SHIFT ARM (5/16") | 10-72734 | |
15 | COTTER PIN, SHIFT SHAFT | 18-210711 | |
16 | SPRING, DETENT | 24-39627 | |
17 | PLATE, DETENT SPRING | 39601 | |
18 | SCREW, DETENT SPRING TO BOTTOM COWL (1/2") | 10-25764 | |
19 | GASKET, DRIVE SHAFT HOUSING/BOTTOM COWL | 27-92874 | |
20 | TRIM COVER Comment: SERIAL #9141798 AND BELOW | 69602 | |
21 | SCREW, TRIM COVER TO BOTTOM COWL (1/2") Comment: SERIAL #9141798 AND BELOW | 10-37571 | |
21 | SCREW, TRIM COVER TO BOTTOM COWL Comment: SERIAL #9141798 AND BELOW | 10-75827 | |
22 | "E" RING, RETAINER | 53-72168 | |
23 | RETAINER, STARTER HANDLE Comment: (SERIAL #9190379 AND BELOW) | 70393 | |
23 | RETAINER, STARTER HANDLE Comment: (SERIAL #9190380 AND UP) | 70393 | |
24 | PLUG, BOTTOM COWL - FUEL ADAPTOR | 19-74258 | |
25 | ARM, LATCH CRANK | 70462 | |
26 | SPRING, LATCH CRANK | 24-70459 | |
27 | CRANK, FRONT LATCH | 75263 | |
28 | WAVE WASHER, LATCH HANDLE | 13-34632 | |
29 | HANDLE, LATCH BOTTOM COWL | 92798 | |
30 | ROLL PIN, LATCH HANDLE TO CRANK | 17-38489 | |
31 | STOP, SHIFT ARM | 74802 | |
- | GASKET SET | 27-77586A78 |
CARBURETOR ASSEMBLY
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) CARBURETOR ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CARBURETOR ASSEMBLY | 89977A2 | |
2 | RETAINER, JET (.041) | 1395-6043 | |
3 | GASKET, JET RETAINER (#) | ||
4 | FUEL BOWL | 1395-8155 | |
5 | GASKET, FUEL BOWL (#) | ||
6 | FLOAT | 1395-5898 | |
7 | SPRING, FLOAT | 1395-5904 | |
8 | PIN, FLOAT (#) | ||
9 | SCREEN, FILTER | 1395-4805 | |
10 | NOZZLE | 1395-5900 | |
11 | INLET NEEDLE, SEAT AND GASKET (#) | ||
12 | GASKET, INLET NEEDLE AND SEAT (#) | ||
14 | SHAFT, CHOKE | 1395-5896 | |
15 | SPRING, CHOKE RETURN | 1395-5905 | |
16 | VALVE, CHOKE | 1395-5897 | |
17 | SCREW, VALVE | 1395-5902 | |
18 | SHAFT, THROTTLE | 1395-5894 | |
19 | SPRING, THROTTLE RETURN | 1395-5903 | |
20 | VALVE, THROTTLE | 1395-8670 | |
21 | NEEDLE, IDLE (#) | ||
22 | SPRING, IDLE NEEDLE | 1395-6103 | |
23 | WELCH PLUG, CARBURETOR (5/16") (#) | ||
23 | CUP PLUG, CARBURETOR (#) | ||
23 | GASKET SET | 1395-5901 | |
23 | REPAIR PARTS KIT | 1395-6618 |
CLAMP AND SWIVEL BRACKET ASSEMBLY
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) CLAMP AND SWIVEL BRACKET ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CLAMP BRACKET ASSEMBLY (PORT) Comment: WASHER ATTACHED WITH A RETAINING RING. | 1479-7291A1 | |
2 | CLAMP BRACKET ASSEMBLY (STARBOARD) Comment: WASHER ATTACHED WITH A RETAINING RING. | 1478-7289A1 | |
3 | THUMB SCREW ASSEMBLY Comment: WASHER ATTACHED WITH A RETAINING RING. | 10-70183A1 | |
4 | HANDLE, THUMB SCREW Comment: WASHER ATTACHED WITH A RETAINING RING. | 70185 | |
5 | GROOVE PIN, THUMB SCREW Comment: WASHER ATTACHED WITH A RETAINING RING. | 17-70733 | |
6 | WASHER, THUMB SCREW Comment: WASHER ATTACHED WITH A RETAINING RING. | 12-70184 | |
1 | CLAMP BRACKET ASSEMBLY (PORT) Comment: WASHER ATTACHED WITH A SCREW | 1479-7291A1 | |
2 | CLAMP BRACKET ASSEMBLY (STARBOARD) Comment: WASHER ATTACHED WITH A SCREW | 1478-7289A1 | |
3 | THUMB SCREW ASSEMBLY Comment: WASHER ATTACHED WITH A SCREW | 10-77190A4 | |
4 | HANDLE, THUMB SCREW Comment: WASHER ATTACHED WITH A SCREW | 78971 | |
5 | GROOVE PIN, THUMB SCREW Comment: WASHER ATTACHED WITH A SCREW | 17-78970 | |
6 | WASHER, THUMB SCREW Comment: WASHER ATTACHED WITH A SCREW | 12-73719 | |
6A | SCREW, THUMB SCREW WASHER Comment: WASHER ATTACHED WITH A SCREW | 10-768042 | |
7 | STUD, CLAMP BRACKET Comment: (SERIAL #9213205 AND BELOW) | 16-68926 | |
7 | SCREW, CLAMP BRACKET Comment: (SERIAL #9213206 AND UP) | 10-96917 | |
8 | WASHER, CLAMP BRACKET STUD OR SCREW | 12-68920 | |
9 | NUT, CLAMP BRACKET STUD OR SCREW | 11-8M0204726 | |
10 | STUD, CLAMP BRACKET | 16-68925 | |
11 | LOCKWASHER< CLAMP BRACKET STUD | 13-26992 | |
12 | NUT, CLAMP BRACKET STUD | 11-29598 | |
13 | TILT PIN ASSEMBLY | 17-68929A2 | |
14 | COVER, EXHAUST RELIEF Comment: USED ON EARLY MODELS ONLY | 71369 | |
15 | SCREW, EXHAUST RELIEF COVER (1/2") Comment: USED ON EARLY MODELS ONLY | 10-48408 | |
16 | SWIVEL BRACKET ASSEMBLY | 1477-7400A2 | |
17 | SCREW, SWIVEL BRACKET (1 3/8") | 10-69067 | |
17A | GREASE FITTING, SWIVEL BRACKET | 22-8M0169589 | |
17B | LUBRICAP, GREASE FITTING | 19-77633Q | |
18 | THUMB SCREW ASSEMBLY | 10-71105A1 | |
19 | TILT LEVER ASSEMBLY Comment: (SERIAL #9141798 AND BELOW) | 76110A1 | |
19 | TILT LEVER ASSEMBLY Comment: (SERIAL #9141799 AND UP) | 76110A1 | |
20 | SPRING, TORSION - PORT | 24-68932 | |
21 | ROD, REVERSE LOCK | 68968 | |
22 | COTTER PIN, REVERSE LOCK ROD | 18-25191 | |
23 | LEVER, REVERSE LOCK | 68972 | |
24 | SPRING, TORSION - STARBOARD | 24-73124 | |
25 | GREASE FITTING (USED WITH REF. #14) | 22-74629 | |
25 | GREASE FITTING (NOT USED WITH REF. #14) | 22-8M0169589 | |
25A | LUBRICAP, GREASE FITTING | 19-77633Q | |
26 | SPRING, TILT PIN | 24-62143 | |
27 | SPACER, REVERSE LOCK ROD | 23-75065 |
CRANKSHAFT, PISTON AND CONNECTING ROD
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) CRANKSHAFT, PISTON AND CONNECTING ROD:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | CRANKSHAFT | 458-5549 | |
2 | CONNECTING ROD ASSEMBLY | 626-5547A5 | |
3 | SCREW, CONNECTING ROD | 10-72455 | |
4 | TAB WASHER, CONNECTING ROD SCREW | 14-72454 | |
5 | NEEDLE BEARING, CONNECTING ROD | 29-68944 | |
6 | LINER ASSEMBLY, CONNECTING ROD - CRANKPIN | 68953A1 | |
8 | ROLLER BEARING, CONNECTING ROD - PISTON PIN | 31-68949 | |
9 | PISTON ASSEMBLY | 758-8076A2 | |
10 | LOCK RING, PISTON | 40-68950 | |
11 | PISTON RING ASSEMBLY | 39-70175A12 | |
12 | OIL SEAL, CRANKSHAFT - UPPER | 26-30530 | |
13 | ROLLER BEARING, CRANKSHAFT - UPPER | 31-78099 | |
14 | RING, CRANKSHAFT | 71841 | |
15 | BALL BEARING, CRANKSHAFT - LOWER | 30-69389 | |
16 | RETAINING RING, BALL BEARING - LARGE | 53-68952 | |
17 | RETAINING RING, BALL BEARING - SMALL | 53-27275 | |
18 | OIL SEAL, CRANKSHAFT | 26-77494 | |
19 | "O" RING, CRANKSHAFT | 25-62706 | |
20 | COUPLING ASSEMBLY, CRANKSHAFT | 70786A1 | |
21 | SEAL, COUPLING | 26-76266 | |
- | GASKET SET | 27-77586A78 |
CYLINDER BLOCK AND CRANKCASE ASSEMBLY
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | BLOCK AND CRANKCASE ASS'Y Comment: SERIAL #9210545 AND BELOW | 862-7713A2 | |
1 | BLOCK AND CRANKCASE ASS'Y Comment: SERIAL #9210546 AND UP | 862-7713A2 | |
2 | STUD, POWERHEAD (1 3/8") Comment: SERIAL #9210545 AND BELOW | 16-56766 | |
2 | STUD, POWERHEAD (1 5/8") Comment: SERIAL #9210546 AND UP | 16-728091 | |
3 | PIN, CYLINDER BLOCK | 17-8M0084726 | 17-85500 |
5 | STUD, REED BLOCK AND CARBURETOR | 16-20353 | |
6 | PLUG, PIPE - CYLINDER BLOCK | 22-56800 | |
7 | SCREW, CRANKCASE TO CYLINDER BLOCK (2") | 10-70732 | |
8 | SCREW, CRANKCASE TO CYLINDER BLOCK (5/8") | 10-28635 | |
9 | SCREW, CRANKCASE TO CYLINDER BLOCK (1") | 10-28667 | |
10 | LINER ASSEMBLY, CYLINDER BLOCK | 68953A1 | |
12 | NEEDLE BEARING, CENTER MAIN | 29-71840 | |
13 | COVER, EXHAUST MANIFOLD Comment: SERIAL #9210545 AND BELOW | 77178 | |
14 | GASKET, EXHAUST MANIFOLD COVER Comment: SERIAL #9210545 AND BELOW | 27-74392 | |
15 | SCREW, EXHAUST MANIFOLD COVER (5/8") Comment: SERIAL #9210545 AND BELOW | 10-32228 | |
13 | COVER, EXHAUST MANIFOLD Comment: SERIAL #9210546 AND UP | 77585 | |
14 | GASKET, EXHAUST MANIFOLD COVER Comment: SERIAL #9210546 AND UP | 27-77586 | |
15 | SCREW, EXHAUST MANIFOLD COVER (5/8") Comment: SERIAL #9210546 AND UP | 10-32228 | |
16 | COVER, CYLINDER BLOCK | 1027-5546 | |
17 | GASKET, CYLINDER BLOCK COVER | 27-68942 | |
18 | SCREW, CYLINDER BLOCK COVER (5/8") | 10-32228 | |
19 | GASKET, BLOCK TO BOTTOM COWL | 27-68941 | |
20 | NUT, POWERHEAD STUDS | 11-8M0207775 | |
22 | HOSE, BLEED | 32-9938779 | |
23 | FITTING ADAPTOR | 22-56759 | |
24 | CHECK VALVE ASSEMBLY, CRANKCASE | 21-64871A2 | |
25 | REED BLOCK | 69498 | |
26 | GASKET, CRANKCASE TO REED BLOCK | 27-70415 | |
27 | REED ASSEMBLY | 34-69499A1 | |
28 | REED STOP | 34-69500 | |
29 | SCREW, REED AND REED STOP (1/4") | 10-28430 | |
30 | GASKET, REED BLOCK TO ADAPTOR | 27-70416 | |
31 | ADAPTOR, CARBURETOR TO REED BLOCK | 70420 | |
32 | BRACKET, CABLE MOUNTING Comment: (SERIAL #9210595 AND BELOW) | 70413 | |
32 | BRACKET, CABLE MOUNTING Comment: (SERIAL #9210596 AND UP) | 79746 | |
33 | SCREW, BRACKET TO ADAPTOR (1/2") | 10-69022 | |
34 | SCREW, CABLE MOUNTING BRACKET (7/16") | 10-20055 | |
35 | FILLER BLOCK, REED BLOCK TO CRANKCASE Comment: (EARLY MODELS) | 74777 | |
- | GASKET SET | 27-77586A78 |
DRIVE SHAFT HOUSING ASSEMBLY
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) DRIVE SHAFT HOUSING ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | DRIVE SHAFT HOUSING ASSEMBLY Comment: SERIAL #9210595 AND BELOW | 1580-6673A2 | |
1 | DRIVE SHAFT HOUSING ASSEMBLY Comment: SERIAL #9210596 AND UP | 1580-6673A2 | |
2 | STUD, DRIVE SHAFT HOUSING (SHORT SHAFT) | 16-68927 | |
2 | STUD, DRIVE SHAFT HOUSING (LONG SHAFT) | 16-75321 | |
3 | SCREW, GREASE FILLER | 10-79953Q04 | |
4 | WASHER, GREASE FILLER SCREW | 12-191833 | |
5 | WATER TUBE (SHORT SHAFT) | 32-68979 | |
5 | WATER TUBE (LONG SHAFT) | 32-75308 | |
6 | SEAL, WATER TUBE | 26-36556 | |
7 | WASHER, WATER TUBE SEAL | 23-13127 | |
8 | CLAMP, CO-PILOT | 68976 | |
9 | MOUNT, RUBBER Comment: DRIVE SHAFT HOUSING (TOP) | 88669 | |
9 | MOUNT Comment: RUBBER - DRIVE SHAFT HOUSING (BOTTOM) | 88669 | |
10 | BUSHING, RUBBER MOUNT | 23-74308 | |
11 | BRACKET ASSEMBLY, STEERING ARM | 98496A1 | |
12 | SCREW, STEERING ARM BRACKET (1") | 10-68918 | |
13 | NUT, GEAR HOUSING STUD | 11-82670911 | |
13 | ADAPTOR, DRIVE SHAFT HOUSING (LONG SHAFT) | 75311T | |
13 | BEARING BLOCK, DRIVE SHAFT (LONG SHAFT) | 94909 |
FLYWHEEL, STATOR AND MANUAL STARTER
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) FLYWHEEL, STATOR AND MANUAL STARTER:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | FLYWHEEL ASSEMBLY | 247-7933A2 | |
2 | KEY, FLYWHEEL DRIVE | 28-20094 | |
3 | WASHER, FLYWHEEL | 12-20553 | |
4 | NUT, FLYWHEEL | 11-8M0204726 | |
5 | STATOR ASSEMBLY | 339-5566A5 | |
6 | SCREW, STATOR TO MOUNTING BRACKET (7/8") | 10-66707 | |
7 | COIL ASSEMBLY (2 1/4" AND 4 1/4" LEADS) | 339-5589A1 | |
7 | COIL ASSEMBLY (3 3/8" AND 4 3/8" LEADS) | 339-5590A1 | |
8 | CLIP, COIL RETAINING | 54-59538 | |
9 | CLIP, COIL RETAINING | 54-65927 | |
10 | TERMINAL BLOCK, STATOR | 86-69348 | |
10A | LOCKWASHER, TERMINAL BLOCK | 13-58308 | |
11 | SCREW, LEADS TO TERMINAL BLOCK (3/8") | 10-22654 | |
12 | SCREW, TERMINAL BLOCK TO STATOR (5/8") | 10-69347 | |
13 | NUT, TERMINAL BLOCK SCREW | 11-46438 | |
14 | TRIGGER ASSEMBLY | 70426A3 | |
17 | LINK ROD, TRIGGER TO SPARK LEVER | 70414 | |
18 | NUT, ADJUSTING LINK ROD | 11-68219 | |
19 | SWIVEL BOLT, LINK ROD | 33973 | |
20 | BRACKET, STATOR MOUNTING | 70428 | |
21 | SCREW, STATOR MOUNTING BRACKET (7/16") | 10-25764 | |
22 | LEVER, SPARK | 70422 | |
23 | SCREW, ADJUSTING - SPARK LEVER (1 1/8") | 10-62802 | |
24 | NUT, ADJUSTING SCREW | 11-21923T | |
25 | SPRING, THROTTLE LEVER | 24-70418 | |
26 | THROTTLE LEVER | 70424 | |
27 | THROTTLE CAM | 70429 | |
28 | SCREW Comment: THROTTLE CAM TO THROTTLE LEVER (5/8") | 10-38055 | |
29 | WASHER, THROTTLE CAM SCREW (7/8") | 12-8M0204666 | |
30 | SCREW, SHOULDER (7/8") | 10-38515 | |
31 | WASHER, SHOULDER SCREW | 12-69056 | |
32 | SPRING, STARTER REWIND | 24-70167 | |
33 | BRACKET ASSEMBLY, STARTER REWIND | 75764 | |
34 | SCREW, BRACKET TO CYLINDER BLOCK (1/2") | 10-37571 | |
34A | WASHER, BRACKET TO CYLINDER BLOCK SCREW | 12-30164 | |
35 | STARTER SHEAVE | 77568 | |
36 | STARTER ROPE ASSEMBLY (INCLUDES 2 RIVETS) | 50-90892A2 | |
37 | HANDLE, STARTER ROPE | 70396 | |
38 | CAP, STARTER HANDLE | 70394 | |
39 | PINION, STARTER REWIND | 75764A2 | |
39A | WASHER, PINION | 12-30164 | |
40 | SPRING, PINION | 24-70288 | |
41 | RETAINER, PINION SPRING | 72697 | |
42 | SPRING, TORSION - PINION | 24-77511 | |
43 | HOLDER, SPRING | 77512 | |
44 | SPACER, SPRING HOLDER Comment: (SERIAL #9189789 AND BELOW) | 23-78894 | |
44 | SPACER, SPRING HOLDER Comment: (SERIAL #9189790 AND UP) | 23-78894 | |
45 | SCREW, SPRING RETAINER (5/8") | 10-70181 | |
46 | WASHER, SPRING RETAINER | 12-8M0204666 | |
47 | RIVET, STARTER SHEAVE | 17-70180 |
FUEL TANK, FUEL LINES AND CARBURETOR
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) FUEL TANK, FUEL LINES AND CARBURETOR:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | FUEL TANK (SERIAL #9191588 AND BELOW) | 1248-6114 | |
1 | FUEL TANK (SERIAL #9191589 AND UP) | 1248-8083A2 | |
2 | SCREW, VENT - FUEL CAP | 10-70298 | |
3 | WASHER, VENT SCREW | 12-8M0204663 | |
4 | CAP, FUEL Comment: SERIAL #9191588 AND BELOW | 36-75338 | |
5 | GASKET, FUEL CAP Comment: SERIAL #9191588 AND BELOW | 27-70297 | |
4 | CAP, FUEL SERIAL Comment: SERIAL #9191589 AND UP | 36-78573A1 | |
5 | GASKET, FUEL CAP Comment: SERIAL #9191589 AND UP | 27-78577 | |
6 | WASHER, FUEL CAP | 12-38255 | |
7 | SPRING, FUEL CAP | 24-22227 | |
8 | WASHER, FUEL CAP | 12-71055 | |
9 | PIN, FUEL CAP - RING | 18-210711 | |
10 | CHAIN, FUEL CAP | 752373 | |
11 | SPRING, FUEL CAP - RETAINING Comment: SERIAL #9191588 AND BELOW | 24-85767 | |
12 | GASKET, FUEL TANK TO COWL Comment: SERIAL #9191588 AND BELOW | 27-70554 | |
13 | BRACKET, FUEL TANK AND IGNITION COIL Comment: SERIAL #9191588 AND BELOW | 73973 | |
11 | SPRING, FUEL CAP - RETAINING Comment: SERIAL #9191589 AND UP | 24-85767 | |
12 | GASKET, FUEL TANK TO COWL Comment: SERIAL #9191589 AND UP | 27-78578 | |
13 | BRACKET, FUEL TANK AND IGNITION COIL Comment: SERIAL #9191589 AND UP | 78579 | |
14 | SCREW, BRACKET TO CYLINDER BLOCK (1/2") | 10-37571 | |
15 | NUT, BRACKET SCREW | 11-859124 | 11-45812 |
16 | STRAP ASSEMBLY, FUEL TANK ATTACHING | 75689A1 | |
16A | SCREW Comment: STRAP ASSEMBLY TO FUEL TANK BRACKET | 10-26668 | |
17 | FITTING, FUEL TANK (FILTER) | 22-70997 | |
18 | CLAMP, FUEL LINE TO FITTING | 54-68725 | |
19 | FUEL LINE, FUEL TANK TO VALVE (8") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 |
20 | CLAMP, FUEL LINE ATTACHING | 54-68424 | |
21 | VALVE Comment: FUEL SHUT OFF (SERIAL #9191588 AND BELOW) | 20-70555 | |
22 | FUEL LINE Comment: VALVE TO CARBURETOR (4" AND 1-1/2") | 32-8M0108355 | 32-8M0047428, 32-830756109, 32-99127109, 32-877821 VALVE TO CARBURETOR (4" AND 1-1/2") |
23 | FITTING, CARBURETOR TO FUEL LINE (90 DEG.) | 22-19688 | |
24 | CARBURETOR | 89977A2 | |
25 | GASKET, CARBURETOR MOUNTING | 27-70417 | |
26 | CHOKE CABLE (ROUND SHOULDER) | 70557 | |
26 | CHOKE CABLE (SQUARE SHOULDER) | 70557 | |
27 | SPACER, CHOKE KNOB - INNER Comment: USE WITH ROUND SHOULDERED CHOKE | 77999 | |
28 | SPACER, CHOKE KNOB - OUTER Comment: USE WITH ROUND SHOULDERED CHOKE | 78000 | |
29 | NUT, LOCKING - CHOKE CABLE | 11-78045 | |
30 | KNOB, CHOKE CABLE | 86874 | |
31 | WASHER, CARBURETOR STUD | 12-8M0204649 | |
32 | NUT, CARBURETOR STUD | 11-36069 | |
33 | FUEL FILTER | 35-76934 | |
34 | LEVER, IDLE ADJUSTMENT | 78049 | |
35 | LINK, IDLE ADJUSTMENT | 78046 | |
36 | SHAFT, IDLE ADJUSTMENT | 78048 | |
38 | SLEEVE, IDLE ADJUSTMENT | 23-78047 | |
40 | NUT, CHOKE KNOB | 11-78045 | |
41 | KNOB, CHOKE | 92434A2 | |
41 | BRACKET, FUEL TANK (LONG SHAFT) | 76623 | |
- | GASKET SET | 27-77586A78 | |
- | GASKET SET | 27-77586A78 |
GEAR HOUSING ASSEMBLY (DRIVE SHAFT)
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) GEAR HOUSING ASSEMBLY (DRIVE SHAFT):

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
GEAR HOUSING ASS'Y, COMP. (SHORT SHAFT) Comment: SERIAL #9210545 AND BELOW | 1648-7811A20 | ||
GEAR HOUSING ASS'Y, COMP. (LONG SHAFT) Comment: SERIAL #9210545 AND BELOW | 1648-7811A21 | ||
GEAR HOUSING ASS'Y, COMP. (SHORT SHAFT) Comment: SERIAL #9210546 AND UP | 1648-7811A20 | ||
GEAR HOUSING ASS'Y, COMP. (LONG SHAFT) Comment: SERIAL #9210546 AND UP | 1648-7811A21 | ||
1 | GEAR HOUSING ASSEMBLY, BASIC | 1648-7381A1 | |
2 | STUD, GEAR HOUSING (2 1/8") - SHORT SHAFT | 16-68927 | |
2 | STUD, GEAR HOUSING (7 1/4") - LONG SHAFT | 16-75321 | |
3 | STUD, WATER PUMP (2 1/4') | 16-68928 | |
4 | STUD, WATER PUMP (1 1/2") | 16-70741 | |
5 | ROLLER BEARING, GEAR HOUSING - LOWER | 31-23101 | |
6 | COUPLING, DRIVE SHAFT/PINION | 68978 | |
7 | ROLLER BEARING, GEAR HOUSING - UPPER | 31-69496 | |
8 | PINION GEAR | 43-68981 | |
9 | THRUST BEARING, PINION GEAR | 31-68945 | |
10 | WASHER, THRUST BEARING | 12-71557 | |
11 | DRIVE SHAFT (SHORT SHAFT) | 45-68983 | |
11 | DRIVE SHAFT (LONG SHAFT) | 45-75310 | |
11 | DRIVE SHAFT (LONG SHAFT) | 45-75310 | |
12 | KEY, IMPELLER DRIVE | 28-8M0032835 | 28-56655 |
13 | GASKET, WATER PUMP - LOWER | 27-68939 | |
14 | WATER PUMP HOUSING ASSEMBLY | 46-90844A1 | |
15 | OIL SEAL, WATER PUMP | 26-897153 | 26-96063 |
16 | INSERT, WATER PUMP | 70977T | |
17 | WASHER, WATER PUMP | 12-8M0204666 | |
18 | QUAD SEAL, WATER PUMP | 25-74138 | |
19 | IMPELLER | 47-89980 | |
20 | FACE PLATE, WATER PUMP | 68955 | |
21 | WATER PUMP COVER ASSEMBLY | 46-95965A2 | |
22 | OIL SEAL, WATER PUMP COVER | 26-30913 | |
23 | WASHER, WATER TUBE SEAL | 23-13127 | |
24 | SEAL, WATER TUBE | 26-36558 | |
24A | SLEEVE, WATER TUBE GUIDE | 23-31792T | |
25 | RING, RUBBER - DRIVE SHAFT | 25-30526 | |
26 | WASHER, WATER PUMP STUDS | 12-30164 | |
27 | NUT, WATER PUMP STUDS | 11-859124 | 11-45812 |
28 | SHIFT SHAFT (SHORT SHAFT) | 72418T | |
28 | SHIFT SHAFT (LONG SHAFT) | 75307 | |
29 | SCREW, VENT - GEAR HOUSING (1/4") | 10-28653 | |
30 | WASHER, VENT SCREW | 19643 | |
31 | SCREW, GREASE FILLER | 10-79953Q04 | |
32 | WASHER, GREASE FILLER SCREW | 12-191833 | |
- | GASKET SET | 27-77586A78 |
GEAR HOUSING ASSEMBLY (PROPELLER SHAFT)
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) GEAR HOUSING ASSEMBLY (PROPELLER SHAFT):

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
GEAR HOUSING ASS'Y, COMP. (SHORT SHAFT) Comment: SERIAL #9210545 AND BELOW | 1648-7811A20 | ||
GEAR HOUSING ASS'Y, COMP. (LONG SHAFT) Comment: SERIAL #9210545 AND BELOW | 1648-7811A21 | ||
GEAR HOUSING ASS'Y, COMP. (SHORT SHAFT) Comment: SERIAL #9210546 AND UP | 1648-7811A20 | ||
GEAR HOUSING ASS'Y, COMP. (LONG SHAFT) Comment: SERIAL #9210546 AND UP | 1648-7811A21 | ||
1 | GEAR HOUSING ASSEMBLY | 1648-7381A1 | |
33 | NUT, PROPELLER SHAFT | 11-20696 | |
34 | WASHER, PROPELLER SHAFT | 12-73672 | |
35 | DRIVE GEAR | 43-68980 | |
36 | SPRING, CLUTCH | 24-91813 | |
37 | SHIM ASSEMBLY, BALL BEARING | 15-69516A1 | |
38 | BALL BEARING, DRIVE GEAR | 30-70894 | |
39 | NUT, DRIVE GEAR | 11-69515 | |
40 | PROPELLER SHAFT | 44-68982 | |
41 | SPACER, PROPELLER SHAFT Comment: SERIAL #9210545 AND BELOW | 69517 | |
42 | BEARING CARRIER ASSEMBLY Comment: SERIAL #9210545 AND BELOW | 99210A2 | |
43 | ROLLER BEARING Comment: SERIAL #9210545 AND BELOW | 31-21145 | |
44 | OIL SEAL Comment: SERIAL #9210545 AND BELOW | 26-98309 | |
45 | COVER, GEAR HOUSING Comment: SERIAL #9210545 AND BELOW | 68956 | |
41 | SPACER, PROPELLER SHAFT Comment: SERIAL #9210546 AND UP | 75816 | |
42 | BEARING CARRIER ASSEMBLY Comment: SERIAL #9210546 AND UP | 99210A1 | |
44 | OIL SEAL Comment: SERIAL #9210546 AND UP | 26-98309 | |
45 | COVER, GEAR HOUSING Comment: SERIAL #9210546 AND UP | 75812 | |
46 | "O" RING, BEARING CARRIER | 25-68935 | |
47 | KEY, BEARING CARRIER | 28-32003 | |
48 | WASHER, GEAR HOUSING COVER Comment: SERIAL #9141798 AND BELOW | 12-68923 | |
49 | THRUST HUB, FORWARD | 70588 | |
50 | PROPELLER ASSEMBLY | 48-86903A1 | |
51 | THRUST HUB, AFT | 70589 | |
52 | NUT, PROPELLER | 11-82670911 | |
53 | NUT, DRIVE SHAFT HOUSING STUD | 11-82670911 | |
- | GASKET SET | 27-77586A78 |
MISCELLANEOUS PARTS/ACCESSORIES
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) MISCELLANEOUS PARTS/ACCESSORIES:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
- | MERC 4 PARTS MANUAL | 90-74059 | |
- | DECAL SET (SERIAL #9141798 AND BELOW) | 37-89319A80 | |
- | DECAL SET (SERIAL #9141798 THRU #9172805) | 37-89319A80 | |
- | DECAL SET (SERIAL #9172805 THRU #9208225) | 37-89319A80 | |
- | GASKET SET (SERIAL #9208226 AND UP) | 37-89319A80 | |
- | GASKET SET (SERIAL #9210545 AND BELOW) Comment: . | 27-77586A78 | |
- | GASKET SET (SERIAL #9210546 AND UP) | 27-77586A78 | |
- | FUEL PUMP KIT (REMOTE FUEL TANK) | 87905A5 | |
- | CONVERSION KIT Comment: (SHORT SHAFT TO LONG SHAFT) | 75311A1 |
STEERING HANDLE ASSEMBLY
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) STEERING HANDLE ASSEMBLY:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | BOOT ASSEMBLY, HANDLE | 11099A1 | |
2 | GRIP, HANDLE | 70382 | |
3 | ARM, HANDLE | 70383 | |
4 | WASHER, HANDLE | 12-31433 | |
5 | RETAINING RING, HANDLE | 53-70384 | |
6 | PULLEY, STEERING CABLE | 70386 | |
7 | SHAFT, HANDLE | 70385 | |
7A | HARNESS ASSEMBLY, STOP SWITCH | 84-70671A1 | |
8 | BRACKET ASSEMBLY, HANDLE | 70389A2 | |
9 | SCREW, HANDLE BRACKET (3/4") | 10-37978 | |
10 | RETAINER, CABLE | 70390 | |
11 | INSULATOR, CABLE | 85-708571 | |
12 | BUSHING, HANDLE BRACKET | 23-70391 | |
13 | NUT, HANDLE BRACKET | 11-73784 | |
14 | CABLE, THROTTLE ADVANCE | 92791 | |
15 | CABLE, THROTTLE RETARD | 92791 | |
16 | NUT, THROTTLE CABLE | 11-21825 | |
17 | WASHER, THROTTLE CABLE | 12-37998 | |
18 | SLEEVE, STOP SWITCH HARNESS | 32-9912688 |
SWITCH BOX AND IGNITION COIL
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) SWITCH BOX AND IGNITION COIL:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | SWITCH BOX ASSEMBLY | 339-6222A8 | |
2 | SCREW, SWITCH BOX GROUND (3/8") | 10-45218 | |
3 | SCREW, SWITCH BOX (3/4") | 10-22523 | |
3A | SPACER, SWITCH BOX SCREW (EARLY MODELS) | 23-26731 | |
4 | WASHER, SWITCH BOX SCREW | 12-8M0204666 | |
5 | "J" CLIP, SWITCH BOX LEAD | 54-63153 | |
6 | WIRE, HIGH TENSION | 84-813715A1 | |
6 | SPARK PLUG (USE IN BELGIUM AND CANADA) | 33-813472 | |
7 | SPARK PLUG (USE IN UNITED STATES) | 33-813472 | |
8 | IGNITION COIL ASSEMBLY | 300-8M0166172 | |
10 | NUT, IGNITION COIL TERMINAL | 11-45076 | |
11 | COIL COVER | 76254 | |
12 | SCREW, COIL COVER (1 7/8") | 10-76502 | |
13 | STA-STRAP, SWITCH BOX LEADS | 61990 | |
14 | SLEEVE, SWITCH BOX LEADS | 5790811 |
TOP COWL
Back to TopBelow is the parts list for Mercury 40, 4 (GNAT 2 CYL.) TOP COWL:

Position No. | Part Name | OEM Number | Supersedes |
---|---|---|---|
1 | TOP COWL (SERIAL #9191588 AND BELOW) Comment: DOES NOT INCLUDE DECALS | 2155-5673 | |
1 | TOP COWL (SERIAL #9191589 AND UP) Comment: DOES NOT INCLUDE DECALS | 2155-6654 | |
2 | HOOK, TOP COWL - REAR | 74139 | |
3 | SCREW, HOOK TO COP COWL (3/8") | 10-45742 | |
4 | NUT, HOOK SCREW | 11-8M0204718 | |
5 | CATCH, TOP COWL - FRONT | 70461 | |
6 | SCREW, CATCH TO COP COWL (3/4") | 10-69570 | |
7 | SOUND BOX (SERIAL #9141798 AND BELOW) | 78634 | |
7 | SOUND BOX (SERIAL #9141799 AND UP) | 78634 | |
7A | PLUG, SOUND BOX | 22-390721 | |
8 | SCREW, SOUND BOX TO CARBURETOR (1/2") | 10-52195 | |
9 | WASHER, SOUND BOX SCREW | 12-20192 | |
10 | GASKET, SOUND BOX Comment: NOT USED ON LATER MODELS | 27-70289 | |
11 | COVER, SOUND BOX Comment: NOT USED ON LATER MODELS | 70292 | |
12 | PLUG, SOUND BOX Comment: NOT USED ON LATER MODELS | 19-824928001 | 19-824928, 19-32297 NOT USED ON LATER MODELS |
13 | SCREW, COVER TO SOUND BOX (1/2") Comment: NOT USED ON LATER MODELS | 10-95700 | |
14 | SCREW, SOUND BOX TO COVER (1") | 10-72415 |
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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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