🔎 Mercury 15 SEA PRO Reference Library — Exploded parts diagrams (16 diagrams), specifications, common issues, and maintenance checklist.
The Mercury 15 SEA PRO is a 4-Stroke, Inline 2-Cylinder, EFI, SOHC outboard motor. A popular choice for small fishing boats, inflatable RIBs, and sailboat auxiliaries.
Quick Reference Specifications
| Specification |
Value |
| Engine Type |
4-Stroke, Inline 2-Cylinder, EFI, SOHC |
| Horsepower |
15 HP |
| Displacement |
333 cc |
| Bore x Stroke |
61 mm x 57 mm |
| Spark Plug (Type & Gap) |
NGK DCPR6E |
| Engine Oil Capacity |
1.0 L (1 quart) |
| Recommended Engine Oil |
SAE 25W-40 Synthetic Blend Mercury FC-W |
| Gear Case Oil Capacity |
200 mL (6.8 fl oz) |
| Idle Speed (in gear) |
850 ± 50 RPM (in gear) |
| Full Throttle RPM Range |
5000-6000 |
| Fuel |
Unleaded Gasoline, 87 Octane min. |
Always verify specifications against your owner's manual for your specific serial number range.
Common Issues & Recommended Parts
Below are common maintenance scenarios for the Mercury 15 SEA PRO:
-
Water Pump / Overheating: If the tell-tale stream is weak or absent, the water pump impeller likely needs replacement. Inspect annually or every 100 hours. → Recommended: Water Pump Impeller Kit
-
Engine Oil / Maintenance Light: 4-stroke engines require regular oil and filter changes. Use marine-grade oil rated for your engine. Change every 100 hours or annually. → Recommended: Oil Filter, Engine Oil
-
Fuel Injector Issues (EFI models): Rough idle or misfires may indicate clogged fuel injectors. Use fuel stabilizer and clean injectors periodically. → Recommended: Fuel Injector, Fuel Filter
-
Gear Case Oil Leak: Check lower unit seals if gear oil appears milky (water contamination). Replace seals and gaskets during lower unit service. → Recommended: Lower Unit Seal Kit, Drain Plug Gaskets
-
Anode Corrosion: Inspect sacrificial anodes regularly, especially in saltwater. Replace when 50% depleted to protect against galvanic corrosion. → Recommended: Zinc/Aluminum Anode Kit
Parts Diagrams & OEM Part Numbers
Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Mercury 15 SEA PRO.
▶Accessories (1 parts)
| Ref |
OEM Part # |
Part Name |
| 0 |
32-877683Q12 |
FUEL LINE ASSEMBLY Comment: NO FIITINGS |
▶Carburetor (35 parts)
| Ref |
OEM Part # |
Part Name |
| - |
879731T97 |
POWERHEAD Comment: SN# 0G202750 & Up |
| 1 |
1392-823907A2 |
CARBURETOR Comment: (WMC-38A) |
| 2 |
815133 |
THROTTLE VALVE |
| 3 |
1395-9696 |
SCREW, Cover Plate |
| 4 |
1395-9699 |
PLATE, Cover |
| 5 |
27-192061 |
GASKET, Carburetor |
| 6 |
813022 |
THROTTLE SHAFT |
| 7 |
1395-9643 |
SCREW, Fuel Pump Cover |
| 8 |
1395-9637 |
COVER, Fuel Pump |
| 9 |
1395-9635 |
DIAPHRAGM/GASKET |
| 10 |
1395-9633 |
GASKET |
| 11 |
15827A1 |
BODY, Fuel Pump |
| 12 |
1395-811806 |
CHOKE VALVE |
| 13 |
1395-8113541 |
CHOKE SHAFT |
| 14 |
1395-811805 |
CHOKE LEVER |
| 15 |
1395-803861 |
VALVE, Inlet Needle |
| 16 |
1395-824401 |
FLOAT LEVER |
| 17 |
F10064 |
SHAFT, Float |
| 18 |
1395-91691 |
FLOAT |
| 19 |
1395-811360 |
SCREW, Bowl Drain |
| 20 |
1395-811353 |
FUEL BOWL |
| 21 |
19266038 |
JET, Main Fuel (.038) |
| 22 |
1395-9171 |
PLUG, Jet Retainer |
| 23 |
1395-97611 |
GASKET/DIAPHRAGM KIT |
| 24 |
1395-8237072 |
REPAIR PARTS KIT |
| 25 |
11-400213 |
NUT, (M8 - Stainless Steel), Carb Stud |
| 26 |
817425 |
LINK, Choke |
| 27 |
53-11278 |
CLIP, Retaining |
| 28 |
817426 |
INSERT, Choke Bezel |
| 29 |
172291 |
CHOKE BEZEL |
| 30 |
817424 |
KNOB, Choke |
| 31 |
41750T |
INSERT |
| 32 |
174421 |
COVER, Carburetor |
| 33 |
19-47579 |
PLUG, Carburetor Cover |
| 34 |
10-40011110 |
SCREW, (M5 x 30) |
▶Clamp Bracket Assembly (20 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
3404-8894A9 |
CLAMP BRACKET Comment: (PORT - GRAY) |
| 2 |
3403-8892A7 |
CLAMP BRACKET Comment: (STBD. - GRAY) |
| 3 |
10-92767A3 |
THUMB SCREW ASSEMBLY, (16 mm) |
| 4 |
12-73719 |
WASHER, Thumb Screw |
| 5 |
10-768042 |
SCREW, Hex Shoulder |
| 6 |
23-8M0084719 |
SPACER |
| 7 |
10-4000333 |
SCREW, (M6 x 40) |
| 8 |
37-12869 |
DECAL (TILT) |
| 9 |
814427 |
SHUTTLE, Tilt Lock |
| 10 |
42078 |
TILT TUBE |
| 11 |
54-8M0085928 |
CLIP, Safety |
| 12 |
11-93164 |
NUT, (.875), Tilt Tube |
| 13 |
12-71421 |
WASHER, Nylon, Tilt Tube |
| 14 |
42390A1 |
LEVER ASSEMBLY, Tilt Return |
| 15 |
90901 |
STRAP, Tilt Stop - Port Side |
| 16 |
10-42498 |
SCREW, (M6 x 1.0), Strap to Clamp Bracket |
| 17 |
13-31030 |
WAVE WASHER, , Tilt Stop Strap Screw |
| 18 |
10-43216 |
BOLT, (.250-20 x 3.50), Clamp Bracket to Transom |
| 19 |
12-67983 |
WASHER, Clamp Bracket Bolt |
| 20 |
11-8267118 |
NUT, (.250-20), Clamp Bracket Bolt |
▶Cowling (28 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
2190-9163T21 |
TOP COWL (SILVER) Comment: WITHOUT DECALS |
| 2 |
17773A2 |
COWL SEAL |
| 3 |
44311F5 |
SHIELD (SILVER) |
| 4 |
10-400018 |
SCREW, (M5 x 12) |
| 5 |
12-73288 |
WASHER, (.220 x .500 x .030) |
| 6 |
815625A02 |
SOUND BLANKET KIT |
| 7 |
17221 |
COWL LATCH |
| 8 |
10-400033 |
SCREW, (M5 x 12) |
| 9 |
812413A1 |
ROLLER BRACKET ASSEMBLY |
| 10 |
18517 |
COWL LATCH SHIM |
| 11 |
2193-9682A9 |
BOTTOM COWL (GRAY) |
| 12 |
25-17231 |
GROMMET, Shift Shaft |
| 13 |
17220 |
LEVER, Cowl Latch |
| 14 |
816202 |
HOOK, Latch |
| 15 |
10-40019130 |
SCREW, (M6 x 30) |
| 16 |
13-37642 |
WAVE WASHER |
| 17 |
23-812707 |
BUSHING, Nylon |
| 18 |
11-17224 |
NUT, Latch Retaining |
| 19 |
17223 |
COVER, Harness |
| 20 |
10-40011131 |
SCREW, (M6 x 35) |
| 21 |
11-401196 |
NUT, (M6) |
| 22 |
25-17226 |
GROMMET, Wire Harness |
| 23 |
87-11083A6 |
STOP SWITCH ASSEMBLY |
| 24 |
8M0032846 |
RETAINER |
| 25 |
15920Q54 |
LANYARD ASSEMBLY |
| 26 |
824367F2 |
SIDE COVER (HANDLE - GRAY) |
| 27 |
25-824361 |
GROMMET |
| 28 |
56-8M0206596 |
SCREW, (M6 x 20) |
▶Crankshaft, Pistons and Flywheel (20 parts)
| Ref |
OEM Part # |
Part Name |
| - |
879731T97 |
POWERHEAD Comment: SN# 0G202750 & Up |
| 1 |
258-859232T15 |
FLYWHEEL |
| 2 |
10-97359A1 |
SCREW ASSEMBLY, Flywheel to Crankshaft |
| 3 |
12-86496 |
WASHER, Flywheel Screw |
| 4 |
497-823105T1 |
CRANKSHAFT ASSEMBLY |
| 5 |
822445A2 |
WEAR SLEEVE |
| 6 |
26-85107 |
OIL SEAL, Crankshaft - Lower |
| 7 |
31-85113T |
ROLLER BEARING, Lower |
| 8 |
28-20094 |
KEY, Woodruff, Flywheel Drive |
| 9 |
31-85114T |
ROLLER BEARING, Upper |
| 10 |
26-859741 |
OIL SEAL, Crankshaft-Upper |
| 11 |
86992A5 |
BEARING ASSEMBLY, Center Main |
| 12 |
767-879878T5 |
PISTON AND PIN ASSEMBLY Comment: SN# 0G202750 & Up |
| 13 |
40-828119 |
LOCK RING |
| 14 |
39-827491A12 |
PISTON RING |
| 15 |
630-8835A4 |
CONNECTING ROD ASSEMBLY |
| 16 |
29-98295 |
NEEDLE BEARING, Piston End |
| 17 |
12-8M0012294 |
BEARING, Locating - Needle Bearing |
| 18 |
31-879877A1 |
ROLLER BEARING ASSEMBLY |
| 19 |
10-91012 |
SCREW, (.250-28 Special) |
▶Cylinder Block and Covers (43 parts)
| Ref |
OEM Part # |
Part Name |
| - |
879731T97 |
POWERHEAD Comment: SN# 0G202750 & Up |
| 1 |
872-9533T40 |
CYLINDER BLOCK/CRANKCASE |
| 2 |
17-85171 |
PIN, Dowel |
| 3 |
22-15133 |
FITTING (45 Degrees) |
| 4 |
16-429173 |
STUD |
| 5 |
16-8161945 |
STUD, (M6 x 32) |
| 6 |
16-8M0034424 |
STUD, (M6 x 50) |
| 7 |
27-892158 |
GASKET, Exhaust Manifold |
| 8 |
92329F03 |
EXHAUST MANIFOLD |
| 9 |
27-892157 |
GASKET, Exhaust Manifold Cover |
| 10 |
923301 |
COVER |
| 11 |
10-4000333 |
SCREW, (M6 x 40) |
| 12 |
144071 |
COVER |
| 13 |
25-822370 |
O-RING |
| 14 |
54-825404 |
STRAP |
| 15 |
10-82191916 |
SCREW, (M5 x 14) (Self-Threading) |
| 16 |
1028-8282A1 |
COVER ASSEMBLY |
| 17 |
22-390721 |
PLUG (BRASS) |
| 18 |
10-4000331 |
SCREW, (M6 x 30) |
| 19 |
863893 |
GASKET |
| 20 |
143171 |
COVER |
| 21 |
27-14318005 |
GASKET |
| 22 |
10-4000333 |
SCREW, (M6 x 40) |
| 23 |
22-996642 |
ELBOW |
| 24 |
32-8M0108355 |
FUEL LINE, (57.00 Inches Bulk), Tell Tale (Cut to 8 Inches) |
| 25 |
22-94848 |
FITTING |
| 26 |
14406 |
COVER |
| 27 |
25-86391 |
O-RING |
| 28 |
10-82191916 |
SCREW, (M5 x 14) (Self-Threading) |
| 29 |
8235695 |
BALL, Threaded |
| 30 |
14408 |
COVER |
| 31 |
25-822370 |
O-RING |
| 32 |
10-82191916 |
SCREW, (M5 x 14) (Self-Threading) |
| 33 |
10-40001209 |
SCREW, (M10 x 60) |
| 34 |
14112T |
REED BLOCK |
| 35 |
27-414172 |
GASKET |
| 36 |
27-414181 |
GASKET |
| 37 |
41420A3 |
PLATE, Carb Adaptor |
| 38 |
21-889781 |
CHECK VALVE |
| 39 |
10-40011108 |
SCREW, (M5 x 20) |
| 40 |
32-99130100 |
HOSE (Cut to 13.25 Inches) |
| 41 |
14586 |
THERMOSTAT |
| 42 |
27-8M0204714 |
GASKET, Thermostat |
▶Driveshaft Housing Assembly (25 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-41670A94 |
GASKET SET |
| 1 |
1597-822155A2 |
HOUSING ASSEMBLY (LONG) (GRAY) |
| 2 |
27-195992 |
GASKET, Driveshaft Housing |
| 3 |
8M0039074 |
MOUNT |
| 4 |
42374F5 |
COVER, Mount (GRAY) |
| 5 |
10-4009238 |
SCREW, (M6 x 80), Mount Cover |
| 6 |
13-400256 |
LOCKWASHER, (M6) |
| 7 |
11-400212 |
NUT, (M6), Cover Screw |
| 8 |
445551 |
BEARING BLOCK (LONG) |
| 9 |
10-4010775 |
SCREW, (M8 x 75) |
| 10 |
11-401386 |
NUT, (M6) |
| 11 |
10-40011131 |
SCREW, (M6 x 35) |
| 12 |
32-421222 |
WATER TUBE (LONG) |
| 13 |
26-42380001 |
SEAL, Water Tube |
| 14 |
8215752 |
ADAPTOR PLATE |
| 15 |
27-41670006 |
GASKET, Adaptor Plate |
| 16 |
158664 |
SEAL, Adaptor Plate |
| 17 |
27-8221531 |
GASKET, Exhaust Tube |
| 18 |
822152 |
PLATE |
| 19 |
10-878608 |
SCREW, (#10-16 x .500) |
| 20 |
10-8240717 |
SCREW, (M8 x 30) |
| 21 |
16-8161949 |
STUD (M6 x 1 x 40) |
| 22 |
8161411 |
PLATE, Trim Cover |
| 23 |
821863F3 |
TRIM COVER (GRAY) |
| 24 |
10-40011130 |
SCREW, (M6 x 30) |
▶Fuel Filter Assembly (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
35-889527A07 |
FUEL FILTER ASSEMBLY |
| 2 |
35-87946Q04 |
FILTER ASSEMBLY |
| 3 |
25-897536 |
SEAL |
| 4 |
858731 |
BALL |
| 5 |
32-8M0108355 |
FUEL LINE, (57.00 Inches Bulk) |
| 6 |
32-8M0108355 |
FUEL LINE, (57.00 Inches Bulk) |
| 7 |
54-816311T |
CABLE TIE, (8.00 Inches) |
| 8 |
25-18202 |
GROMMET |
| 9 |
22-15781A9 |
CONNECTOR KIT, Fuel |
| 10 |
10-8M0204707 |
SCREW, (M6 x 25) |
▶Gear Housing(Driveshaft) (42 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-41670A94 |
GASKET SET |
| 1 |
1666-8833A18 |
GEAR HOUSING Comment: (GRAY) |
| 2 |
23-12009 |
BUSHING, (.31 x .45 x .50) |
| 3 |
22-8M0058389 |
SCREW, Magnetic |
| 4 |
12-191833 |
WASHER, Fiber |
| 5 |
822244A1 |
SLEEVE ASSEMBLY |
| 6 |
23-823944 |
SLEEVE |
| 7 |
23-823943 |
BUSHING |
| 8 |
10-79953Q04 |
SCREW, (.375-16 x .250) |
| 9 |
12-191833 |
WASHER, Fiber |
| 10 |
35-421991 |
SCREEN |
| 11 |
10-13954 |
SCREW, (.250-14 x .88) |
| 12 |
97-42121Q02 |
ANODE ASSEMBLY |
| 13 |
10-13954 |
SCREW, (.250-14 x .88) |
| 14 |
26-42133 |
SEAL |
| 15 |
43-8219251 |
PINION GEAR, (13-26) |
| 16 |
12-41369 |
WASHER, Thrust |
| 17 |
31-22756 |
ROLLER BEARING |
| 18 |
46-42040T5 |
WATER PUMP BASE |
| 19 |
27-192043 |
GASKET |
| 20 |
26-33613 |
SEAL |
| 21 |
42375 |
RETAINER |
| 22 |
10-48408 |
SCREW, (#10-16 x .500) |
| 23 |
25-822236 |
QUAD RING |
| 24 |
26-413651 |
OIL SEAL |
| 25 |
27-19202001 |
GASKET, Water Pump Plate |
| 26 |
32-42185A1 |
WATER TUBE |
| 27 |
42200 |
FACE PLATE |
| 28 |
46-42089A2 |
COVER ASSEMBLY |
| 29 |
26-421021 |
SEAL |
| 30 |
47-42038Q02 |
IMPELLER |
| 31 |
28-8M0173458 |
KEY ASSEMBLY |
| 32 |
444671 |
GUIDE |
| 33 |
10-8M0214957 |
SCREW, (M6 x 30) |
| 34 |
42039 |
CAM, Shift |
| 35 |
822250 |
SHIFT SHAFT Comment: (LONG) |
| 36 |
53-42389 |
E RING |
| 37 |
8M0036770 |
GUIDE |
| 38 |
10-40011109 |
SCREW, (M5 x 25) |
| 39 |
11-401385 |
NUT, (M5) |
| 40 |
45-825152 |
DRIVESHAFT Comment: (LONG) |
| 41 |
12-822248 |
THRUST WASHER |
▶Gear Housing(Propeller Shaft) (23 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-41670A94 |
GASKET SET |
| 1 |
1666-8833A18 |
GEAR HOUSING Comment: (GRAY) |
| 43 |
31-821321A1 |
ROLLER BEARING |
| 44 |
43-821924A1 |
FORWARD GEAR |
| 45 |
23-41367 |
BUSHING |
| 46 |
813139 |
CAM FOLLOWER |
| 47 |
52-821930A1 |
CLUTCH ASSEMBLY |
| 48 |
17-823951 |
CROSS PIN |
| 49 |
24-42204 |
SPRING |
| 50 |
44-821929 |
PROPELLER SHAFT |
| 51 |
43-821926T1 |
REVERSE GEAR, 13-26 |
| 52 |
42144T3 |
BEARING CARRIER |
| 53 |
25-8M0214923 |
O-RING, (1.984 x .139) |
| 54 |
23-821927 |
BUSHING |
| 55 |
26-99325 |
SEAL |
| 56 |
26-821928 |
OIL SEAL |
| 57 |
10-82407110 |
SCREW, (M8 x 50) |
| 58 |
10-8240717 |
SCREW, (M8 x 30) |
| 59 |
48-828156A12 |
PROPELLER, (9.00 x 9.00) |
| 60 |
23-420911 |
SPACER |
| 61 |
11-40140 |
NUT, (M10) |
| 62 |
8219321 |
THRUST HUB Comment: (1.510 DIA.) |
| 63 |
822559Q01 |
HI-REVERSE THRUST CUP |
▶Ignition/Electrical Components (22 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
86617A17 |
STATOR ASSEMBLY |
| 2 |
10-4000120 |
SCREW, (M5 x 25) |
| 3 |
98450A10 |
TRIGGER ASSEMBLY |
| 4 |
54-22740 |
CLIP |
| 5 |
10-48408 |
SCREW, (#10-16 x .500) |
| 6 |
8M0084613 |
C WASHER |
| 7 |
339-832757A4 |
IGNITION COIL |
| 8 |
997621 |
COVER |
| 9 |
10-1994155 |
SCREW, (M5 x 55) |
| 10 |
10-32,11-45076 |
NUT, |
| 11 |
84-813715A2 |
LEAD CABLE SET, High Tension (5 and 8.25 Inch) |
| 12 |
85-63709A1 |
BOOT/TERMINAL KIT |
| 13 |
33-938 |
SPARK PLUG (NGK #BPZ8H-N-10) |
| 14 |
54-816311T |
CABLE TIE, (8.00 Inches) |
| 15 |
84-88807A10 |
WIRE ASSEMBLY, Ground |
| 16 |
18495A30 |
SWITCH BOX |
| 17 |
10-40011111 |
SCREW, (M5 x 35) |
| 18 |
86704A10 |
STATOR ASSEMBLY |
| 19 |
10-4000123 |
SCREW, (M5 x 30) |
| 20 |
86-638131 |
TERMINAL BLOCK |
| 21 |
10-48408 |
SCREW, (#10-16 x .500) |
| 22 |
10-48409 |
SCREW, (#10-16 x .625) |
▶Service/Support Material (1 parts)
| Ref |
OEM Part # |
Part Name |
| 0 |
90-828768 |
OWNERS MANUAL Comment: (GRAY) |
▶Starter Assembly(Manual) (25 parts)
| Ref |
OEM Part # |
Part Name |
| - |
90906A23 |
RECOIL STARTER ASSEMBLY, Complete |
| 1 |
86689A5 |
HOUSING |
| 2 |
833161T |
PAD, Felt |
| 3 |
24-86857T01 |
SPRING |
| 4 |
50-825269T01 |
SHEAVE |
| 5 |
24-86851T02 |
SPRING |
| 6 |
868501 |
CAM |
| 7 |
53-86849T01 |
RETAINING RING |
| 8 |
50-12066Q10 |
ROPE, Starter |
| 9 |
44180 |
BUSHING, Rope |
| 10 |
85174A1 |
HANDLE ASSEMBLY |
| 11 |
24-868523 |
SPRING |
| 12 |
86853T01 |
CAM |
| 13 |
10-826253 |
SCREW, (.250-20 x .625) |
| 14 |
426264 |
SUPPORT |
| 15 |
10-40019111 |
SCREW, (M5 x 35) |
| 16 |
23-309772 |
SPACER |
| 17 |
856154T01 |
SUPPORT |
| 18 |
11-401385 |
NUT, (M5) |
| 19 |
858925 |
LEVER, Lock (UPPER) |
| 20 |
24-823778 |
SPRING, Upper Lock Lever |
| 21 |
93876T02 |
LEVER, Lock (LOWER) |
| 22 |
17-38489 |
PIN, Roll |
| 23 |
12-69056 |
WASHER, (.255 x .620 x .03) |
| 24 |
11-401386 |
NUT, (M6) |
▶Steering Handle (24 parts)
| Ref |
OEM Part # |
Part Name |
| - |
821468T3 |
TILLER HANDLE, Complete Comment: (GRAY) |
| 1 |
821468T9 |
ARM-STEERING HANDLE Comment: (GRAY) |
| 2 |
822441 |
RETAINER |
| 3 |
10-40011107 |
SCREW, (M5 x 16) |
| 4 |
822148A2 |
COVER KIT |
| 5 |
822150 |
PULLEY |
| 6 |
10-878608 |
SCREW, (#10-16 x .500) |
| 7 |
432426 |
THROTTLE CABLE |
| 8 |
85-960099 |
SLEEVE, (12.00 Inches) |
| 9 |
821972T |
KNOB, Throttle |
| 10 |
24-96203 |
SPRING |
| 11 |
892995 |
LOCK, Throttle |
| 12 |
10-8M0204707 |
SCREW, (M6 x 25) |
| 13 |
821463T01 |
TILLER TUBE |
| 14 |
821465 |
THROTTLE HANDLE |
| 15 |
37-8242004 |
DECAL |
| 16 |
8M0221732 |
GRIP |
| 17 |
87-8M0104615 |
STOP SWITCH |
| 18 |
23-823939 |
BUSHING |
| 19 |
8221471 |
PLATE Comment: (USE WITH 5MM SCREWS-REF #20) |
| 20 |
10-40011107 |
SCREW, (M5 x 16) |
| 21 |
12-822145 |
WASHER |
| 22 |
13-826792 |
WAVE WASHER |
| 23 |
12-822146 |
WASHER |
▶Swivel Bracket Assembly (30 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
3402-8831A9 |
SWIVEL BRACKET Comment: (GRAY) |
| 2 |
22-8M0169589 |
FITTING, Grease |
| 3 |
42124A2 |
PLATE ASSEMBLY-CO-PILOT |
| 4 |
23-421402 |
BEARING |
| 5 |
23-42080T01 |
THRUST BEARING-UPPER |
| 6 |
23-42139 |
BUSHING, Lower |
| 7 |
26-42077 |
SEAL |
| 8 |
12-42373 |
THRUST WASHER, Lower |
| 9 |
24-421301 |
SPRING |
| 10 |
42082T04 |
BRACKET |
| 11 |
17-420811 |
PIN |
| 12 |
8M0075731 |
HOOK, Reverse Lock |
| 13 |
17-830741A1 |
PIVOT PIN Comment: (DESIGN I) |
| 14 |
91963 |
WASHER, (.390 x .600 x .032), Pivot Pin Comment: (DESIGN I) |
| 15 |
17-830741A1 |
PIVOT PIN Comment: (DESIGN II) |
| 16 |
42085F5 |
CARRYING HANDLE Comment: (GRAY) |
| 17 |
91963 |
WASHER, (.390 x .600 x .032) Comment: (DESIGN II) |
| 18 |
24-42128 |
SPRING |
| 20 |
24-42127 |
SPRING, Reverse Hook |
| 21 |
53-13194 |
RING, Retaining |
| 22 |
821961 |
ROD |
| 23 |
8165621 |
DISC |
| 24 |
821958A1 |
SWIVEL HEAD PLATE |
| 25 |
10-40011126 |
SCREW, (M6 x 13) |
| 26 |
821957 |
BRAKE PLATE |
| 27 |
12-29330 |
WASHER |
| 28 |
821959 |
HANDLE |
| 29 |
11-8M0204726 |
NUT, (.375-24) |
| 30 |
42213A25 |
SWIVEL HEAD Comment: (GRAY) |
| 31 |
37-8237011 |
DECAL, Co-Pilot |
▶Throttle and Shift Linkage (20 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
823857A1 |
LINK-SPARK ADJUSTMENT |
| 2 |
817428 |
SOCKET |
| 3 |
10-32,11-45076 |
NUT, |
| 4 |
42161 |
LINK INTERLOCK |
| 5 |
8237581 |
ANCHOR BRACKET-CABLE |
| 6 |
10-4006731 |
SCREW, (M6 x 16) |
| 7 |
10-8M0204707 |
SCREW, (M6 x 25) |
| 8 |
12-69056 |
WASHER, (.255 x .620 x .03) |
| 9 |
23-823806 |
BUSHING |
| 10 |
8237571 |
THROTTLE CAM |
| 11 |
8236103 |
LEVER, Interlock Control |
| 12 |
10-40019108 |
SCREW, (M5 x 20) |
| 13 |
12-4002314 |
WASHER |
| 14 |
8239521 |
SHIFT HANDLE |
| 15 |
8236011 |
SHIFT SHAFT, Horizontal |
| 16 |
8235992 |
LEVER, Horizontal Shift Shaft (PORT) |
| 17 |
823613 |
LEVER, Backplate |
| 18 |
24-826077 |
SPRING, Detent |
| 19 |
824994 |
SPRING, Plate |
| 20 |
10-40011107 |
SCREW, (M5 x 16) |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Mercury 15 SEA PRO running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.
- Replace water pump impeller and inspect wear plate
- Change engine oil and oil filter (check drain plug washer)
- Replace spark plugs and check ignition timing
- Drain and refill lower unit gear oil; inspect for water contamination
- Inspect fuel lines, primer bulb, and fuel filter for deterioration
- Check and replace sacrificial anodes (zinc or aluminum)
- Inspect propeller for damage; check shaft seal and cotter pin
- Check valve clearance (refer to service manual for specifications)
- Lubricate all grease points (steering, tilt tube, shift linkage)
- Inspect control cables and throttle/shift linkage for smooth operation
-
Pro Tip: Always flush the engine with fresh water after saltwater use — even a quick 10-minute flush significantly extends component life.
-
Pro Tip: Use fuel stabilizer in the tank before winter storage, and fog the cylinders to prevent internal corrosion during extended periods of non-use.
