🔎 Mercury 15 SEA PRO Reference Library — Exploded parts diagrams (19 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 |
12569A1 |
ATTACHING KIT, Cable And Pulley |
▶Carburetor(XR10/Magnum 10) (42 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-42364A92 |
GASKET SET, Engine |
| 1 |
1392-9726T18 |
CARBURETOR Comment: (WMC-49A-NORWAY) |
| 2 |
1395-823716 |
VALVE, Throttle Comment: (WMC-49/49A) |
| 3 |
19267 |
SHAFT, Throttle (INCLS. SCREW & SPRING) Comment: (WMC-49/49A) |
| 4 |
1395-9164 |
BOWL, Fuel |
| 5 |
1395-91691 |
FLOAT |
| 6 |
98551 |
VALVE, Inlet Needle |
| 7 |
1395-6359 |
JET, (.052) Comment: (WMC-23/48/48A) |
| 8 |
1395-9171 |
PLUG |
| 9 |
1395-823648 |
COVER, Diaphragm Comment: (WMC-48/48A/49/49A) |
| 10 |
1395-9697 |
SCREW |
| 11 |
15827A1 |
BODY |
| 12 |
1395-9643 |
SCREW |
| 13 |
1395-9699 |
PLATE |
| 14 |
1395-9696 |
SCREW |
| 15 |
1395-97611 |
GASKET/DIAPHRAGM KIT |
| 16 |
1395-8237072 |
REPAIR KIT |
| 17 |
1395-9637 |
COVER |
| 18 |
1395-9762 |
PLUG |
| 19 |
27-192061 |
GASKET, Carburetor |
| 20 |
1395-9635 |
DIAPHRAGM/GASKET |
| 21 |
128053 |
LEVER, Fast Idle |
| 22 |
12803 |
BRACKET, Primer |
| 23 |
11-821979 |
NUT |
| 24 |
10-12110 |
SCREW, (#6-32 x .750) |
| 25 |
24-11277 |
SPRING, Tension |
| 26 |
10-400018 |
SCREW, (M5 x 12) |
| 27 |
10-79965 |
SCREW, (#8-32 x .500) Stainless Steel |
| 28 |
112731 |
LEVER, Primer |
| 29 |
11280 |
CAM BLOCK |
| 30 |
53-11278 |
CLIP, Retaining |
| 31 |
12804A1 |
BEZEL ASSEMBLY, Choke |
| 32 |
128022 |
PRIMER KNOB |
| 33 |
10-40056110 |
SCREW, (M5 x 30) |
| 34 |
11-400211 |
NUT, (M5) Stainless Steel |
| 35 |
174421 |
COVER, Carburetor Comment: USE WHERE APPLICABLE |
| 36 |
19-47579 |
PLUG Comment: USE WHERE APPLICABLE |
| 37 |
445541 |
IDLE WIRE |
| 38 |
37-129701 |
DECAL (SLOW/FAST) |
| 39 |
41750T |
INSERT |
| 40 |
10-40056110 |
SCREW, (M5 x 30) |
| 41 |
125681 |
RESTRICTOR PLATE Comment: (NORWAY) |
▶Carburetor, SeaPro/Marathon10 & 15 (35 parts)
| Ref |
OEM Part # |
Part Name |
| - |
19072T97 |
POWERHEAD ASSEMBLY Comment: SN# USA-0G112450/BEL-9831800 & Up |
| 1 |
1392-851908T06 |
CARBURETOR Comment: (WMC-55A- SEAPRO/MARATHON 15) |
| 2 |
815133 |
VALVE, Throttle Comment: (WMC-50/50A/50B) |
| 3 |
813022 |
SHAFT, Throttle (INCLS. SCREW & SPRING) Comment: (WMC-50/50A/50B) |
| 4 |
1395-811353 |
BOWL, Fuel |
| 4A |
1395-811360 |
SCREW, Bowl Drain |
| 5 |
1395-91691 |
FLOAT |
| 5A |
F10064 |
SHAFT |
| 6 |
98551 |
VALVE, Inlet Needle |
| 7 |
1395-6207 |
JET, (.072) Comment: (WMC-55/55A) |
| 8 |
1395-9171 |
PLUG |
| 9 |
NSS |
NOT SOLD SEPARATE, Throttle Lever (Part of Reference #3) Comment: (WMC-50/50A/50B/55/55A) |
| 10 |
1395-8113541 |
SHAFT, Choke |
| 11 |
15827A1 |
BODY |
| 12 |
1395-9643 |
SCREW |
| 13 |
1395-9699 |
PLATE |
| 14 |
1395-9696 |
SCREW |
| 15 |
1395-97611 |
GASKET/DIAPHRAGM KIT |
| 16 |
1395-8237072 |
REPAIR KIT |
| 17 |
1395-9637 |
COVER |
| 18 |
1395-811806 |
VALVE, Choke |
| 19 |
27-192061 |
GASKET, Carburetor (USE WHERE APPLICABLE) |
| 20 |
1395-9635 |
DIAPHRAGM/GASKET |
| 21 |
1395-811805 |
LEVER, Choke |
| 23 |
174421 |
COVER, Carburetor |
| 24 |
19-47579 |
PLUG |
| 25 |
10-40056110 |
SCREW, (M5 x 30) |
| 26 |
41750T |
INSERT |
| 27 |
817424 |
KNOB, Choke |
| 28 |
12804A1 |
BEZEL ASSEMBLY, Choke |
| 29 |
53-11278 |
CLIP, Retaining |
| 30 |
817426 |
INSERT, Choke Bezel |
| 31 |
817425 |
LINK, Choke |
| 32 |
10-40056110 |
SCREW, (M5 x 30) |
| 33 |
11-400211 |
NUT, (M5) Stainless Steel |
▶Clamp Bracket (21 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
3404-8894A9 |
CLAMP BRACKET ASSEMBLY (Port-Gray) Comment: SN# USA-0G031927/BEL-9803667 & Up |
| 1/2 |
3404-8894A12 |
CLAMP BRACKET ASSEMBLY Comment: (Port/Starboard-Gray) SN# USA-0G031926/BEL-9803666 & Below |
| 2 |
3403-8892A7 |
CLAMP BRACKET ASSEMBLY Comment: (Starboard-Gray) SN# USA-0G031927/BEL-9803667 & Up |
| 3 |
10-92767A3 |
THUMB SCREW ASSEMBLY, (16 mm) |
| 4 |
12-73719 |
WASHER |
| 5 |
10-768042 |
SHOULDER SCREW, Hex |
| 6 |
23-8M0084719 |
SPACER |
| 7 |
10-4000333 |
SCREW, (M6 x 40) |
| 8 |
37-12869 |
DECAL, Tilt Position |
| 9 |
814427 |
SHUTTLE |
| 10 |
42078 |
TILT TUBE |
| 11 |
54-8M0085928 |
CLIP |
| 12 |
11-93164 |
NUT, (.875) |
| 13 |
12-71421 |
WASHER, Nylon |
| 14 |
42390A1 |
LEVER ASSEMBLY, Tilt Return |
| 15 |
90901 |
STRAP, PORT SIDE |
| 16 |
10-42498 |
SCREW, (M6 x 1.0) |
| 17 |
13-31030 |
WAVE WASHER |
| 18 |
10-43216 |
BOLT, (.250-20 x 3.50) |
| 19 |
12-67983 |
WASHER |
| 20 |
11-8267118 |
NUT, (.250-20) |
▶Cowls (20 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
2191-8M0094069 |
TOP COWL ASSEMBLY Comment: (SILVER) |
| 2 |
444621 |
SEAL |
| 3 |
13691A02 |
SOUND BLANKET KIT |
| 4 |
817104A3 |
LATCH ASSEMBLY, Cowl |
| 5 |
180402 |
LATCH HOOK |
| 6 |
10-852530 |
SCREW, (.250-20 x 1.50) |
| 7 |
12873T |
SHIELD |
| 8 |
10-400018 |
SCREW, (M5 x 12) |
| 9 |
2192-9204A2 |
BOTTOM COWL Comment: (GRAY) |
| 10 |
15061001 |
PLUG |
| 11 |
87-11083A6 |
SWITCH ASSEMBLY, Stop |
| 12 |
15920Q54 |
LANYARD ASSEMBLY |
| 13 |
8M0032846 |
RETAINER, Brass |
| 14 |
44461A1 |
LEVER, Cowl Latch |
| 15 |
23-76470 |
BUSHING |
| 16 |
13-69708 |
WAVE WASHER |
| 17 |
11394 |
SPACER |
| 18 |
12154 |
PLUG |
| 19 |
25-12602002 |
GROMMET (USE WHERE APPLICABLE) |
| 20 |
37-855577A4 |
DECAL, EPA Label Information Comment: (1998) (SEAPRO/MARATHON) |
▶Crankshaft, Pistons and Flywheel (24 parts)
| Ref |
OEM Part # |
Part Name |
| - |
19072T97 |
POWERHEAD ASSEMBLY Comment: SN# USA-0G112450/BEL-9831800 & Up |
| 1 |
11-818591 |
NUT, (M14) |
| 2 |
260-859231T19 |
FLYWHEEL ASSEMBLY |
| 3 |
17794A1 |
BEARING |
| 4 |
26-818901 |
SEAL |
| 5 |
400-8M0083309 |
CRANKSHAFT ASSEMBLY |
| 6 |
818630A1 |
SLEEVE |
| 7 |
30-41341 |
BEARING, Ball, Lower |
| 8 |
53-20940 |
RING, Snap (SMALL) (USE WHERE APPLICABLE) |
| 9 |
53-42132 |
RING, Retaining |
| 10 |
12-13031 |
WASHER |
| 11 |
26-125661 |
SEAL, Oil - Lower, LOWER |
| 12 |
28-20094 |
KEY, Woodruff |
| 13 |
31-878158 |
BEARING, Roller |
| 14 |
26-125671 |
SEAL, Oil - Upper, UPPER |
| 15 |
637-8477A2 |
CONNECTING ROD ASSEMBLY |
| 16 |
10-823460 |
SCREW, (M5 x 16) |
| 17 |
31-42076A1 |
BEARING ASSEMBLY, Roller |
| 18 |
29-42186 |
BEARING, Needle |
| 19 |
12-8M0012297 |
BEARING, Thrust |
| 20 |
784-9747A4 |
PISTON ASSEMBLY Comment: (.015 O.S.) |
| 21 |
39-18212A1 |
RING SET, Piston Comment: (.015 O.S.) |
| 22 |
40-422021 |
LOCK RING |
| 23 |
12-824451 |
WASHER, (.610 Inside Diamter x .890 Outside Diameter x .062) |
▶Cylinder Block and Covers (47 parts)
| Ref |
OEM Part # |
Part Name |
| - |
19072T97 |
POWERHEAD ASSEMBLY Comment: SN# USA-0G112450/BEL-9831800 & Up |
| 1 |
881-9727T12 |
CYLINDER BLOCK Comment: SN# usa-0G112450/BEL-9831800 & Up |
| 2 |
17-85171 |
PIN, Dowel |
| 3 |
16-424632 |
STUD, (M8 x 37.1) |
| 4 |
21-426982 |
CHECK VALVE |
| 5 |
32-892024122 |
TUBING, (20.00 Feet Bulk) (Cut to 2.50 Inches) |
| 6 |
16-8161949 |
STUD |
| 7 |
10-421251 |
SCREW, (M8 x 55) |
| 8 |
17-17866 |
PIN, Groove |
| 9 |
11-401386 |
NUT, (M6) |
| 10 |
27-191861 |
GASKET, Powerhead |
| 11 |
828435A3 |
REED BLOCK Comment: (Rubber Coated (1) Piece Design) SN# USA-0G437999/BEL-9926999 & Below |
| 12 |
828435A3 |
REED BLOCK ASSEMBLY Comment: (Replaced by (1) Piece Design Reed Block) |
| 13 |
21-42657A3 |
CHECK VALVE Comment: (Replaced by (1) Piece Design Reed Block) |
| 14 |
26-42137 |
SEAL Comment: (Replaced by (1) Piece Design Reed Block) |
| 15 |
27-195982 |
GASKET Comment: (Replaced by (1) Piece Design Reed Block) |
| 16 |
10-4005764 |
SCREW, (M3.5 x 8) Comment: (Replaced by (1) Piece Design Reed Block) |
| 17 |
34-825141 |
REED Comment: (Replaced by (1) Piece Design Reed Block) |
| 18 |
179031 |
STOP, Reed Comment: (Replaced by (1) Piece Design Reed Block) |
| 19 |
10-4000171 |
SCREW, (M6 x 16) |
| 20 |
11-400213 |
NUT, (M8) Stainless Steel |
| 21 |
8M0048005 |
COVER |
| 22 |
10-40062129 |
SCREW, (M6 x 25) |
| 23 |
27-19185 |
GASKET |
| 24 |
42365 |
PLATE, Baffle |
| 25 |
27-19184 |
GASKET |
| 26 |
10-40062129 |
SCREW, (M6 x 25) |
| 27 |
22-56759 |
FITTING, Barbed |
| 28 |
32-892024122 |
TUBING, (20.00 Feet Bulk) (Cut to 5.25 and 7 Inches) |
| 29 |
22-59169003 |
FITTING |
| 30 |
54-816311T |
TIE STRAP, (8.00 Inches) |
| 31 |
27-192031 |
GASKET Comment: SN# 9831799 & Below |
| 32 |
19107F1 |
COVER, Intake Comment: SN# 9831799 & Below |
| 33 |
25-891935 |
O-RING Comment: SN# USA-0G112450/BEL-9831800 & Up |
| 34 |
826383F1 |
COVER, Intake Comment: SN# USA-0G112450/BEL-9831800 & Up |
| 35 |
32-8M0108355 |
HOSE, (57.00 Inches Bulk) |
| 36 |
22-94848 |
FITTING, BOTTOM COWL |
| 37 |
1033-8906A02 |
COVER ASSEMBLY |
| 38 |
27-19207002 |
GASKET |
| 39 |
8M0039352 |
COVER |
| 40 |
27-19205002 |
GASKET |
| 41 |
10-40062129 |
SCREW, (M6 x 25) |
| 42 |
14586 |
THERMOSTAT (120 DEGREES) |
| 43 |
27-8M0204714 |
GASKET |
| 44 |
22-291112 |
CONNECTOR (STRAIGHT) |
| 45 |
10-40062129 |
SCREW, (M6 x 25) |
| 46 |
16-429173 |
STUD Comment: (NORWAY MODELS) |
▶Driveshaft Housing (19 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-42364A92 |
GASKET SET, Engine |
| 1 |
1597-822155A2 |
HOUSING ASSEMBLY Comment: (LONG) GRAY |
| 2 |
27-195992 |
GASKET, Driveshaft Housing |
| 3 |
8M0039074 |
MOUNT |
| 4 |
42374F5 |
COVER Comment: (GRAY) |
| 5 |
10-4009238 |
SCREW, (M6 x 80) |
| 6 |
12-8M0204649 |
WASHER, (.281 x .500 x .060) Stainless Steel |
| 7 |
11-400212 |
NUT, (M6) Stainless Steel |
| 8 |
10-40011131 |
SCREW, (M6 x 35) Stainless Steel |
| 9 |
26-11287001 |
SEAL, Adapter Plate |
| 10 |
41344A3 |
ADAPTOR PLATE ASSEMBLY Comment: (1-1/8 IN. I.D. TUBE) USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 11 |
32-881203A2 |
TUBE ASSEMBLY, Water Comment: (LONG) USE WITH DESIGN II WATER TUBE |
| 12 |
32-42122 |
TUBE, Water Comment: (LONG) USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 13 |
42371 |
HOLDER Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 14 |
27-192012 |
GASKET Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 15 |
10-40011107 |
SCREW, (M5 x 16) Stainless Steel Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 16 |
23-42465 |
SPACER Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3 |
| 17 |
26-42380001 |
SEAL |
| 18 |
445551 |
BLOCK, Bearing Comment: (LONG) |
▶Fuel Filter Assembly (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
35-889527A07 |
FILTER ASSEMBLY, Fuel |
| 2 |
858731 |
BALL |
| 3 |
35-87946Q04 |
FILTER ASSEMBLY |
| 4 |
25-897536 |
SEAL |
| 5 |
32-8M0108355 |
HOSE, (57.00 Inches Bulk) |
| 6 |
32-8M0108355 |
HOSE, (57.00 Inches Bulk) |
| 7 |
54-816311T |
TIE STRAP, (8.00 Inches) |
| 8 |
25-18202 |
GROMMET |
| 9 |
22-15781A9 |
CONNECTOR KIT, Fuel |
| 10 |
10-8M0204707 |
SCREW, (M6 x 25) |
▶Gear Housing(Driveshaft)(2.00:1 Gear Ratio) (43 parts)
| Ref |
OEM Part # |
Part Name |
| - |
26-41365A3 |
SEAL KIT |
| 1 |
1666-8833A18 |
GEAR HOUSING ASSEMBLY, Basic-Gray Comment: (GRAY) |
| 2 |
23-12009 |
BUSHING, (.31 x .45 x .50) |
| 3 |
22-8M0058389 |
FITTING KIT, Magnetic, Plug Fill/Drain |
| 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 |
GEAR, Pinion - 13-26 |
| 16 |
12-41369 |
WASHER |
| 17 |
31-22756 |
BEARING, Roller |
| 18 |
46-42040T5 |
BASE ASSEMBLY, Water Pump |
| 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 |
SEAL, Oil |
| 25 |
27-19202001 |
GASKET, Water Pump Plate |
| 26 |
32-42185A1 |
TUBE ASSEMBLY, Water |
| 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 |
12-8M0204649 |
WASHER, (.281 x .500 x .060) Stainless Steel (USE WHERE APPLICABLE) |
| 35 |
42039 |
CAM |
| 36 |
8M0026065 |
SHIFT SHAFT Comment: (LONG) |
| 37 |
53-42389 |
E RING |
| 38 |
8M0036770 |
GUIDE |
| 39 |
10-40011109 |
SCREW, (M5 x 25) Stainless Steel |
| 40 |
11-401385 |
NUT, (M5) |
| 41 |
45-823390 |
DRIVESHAFT Comment: (LONG) |
| 42 |
12-822248 |
THRUST WASHER |
▶Gear Housing, Propeller Shaft - 2.00:1 Gear Ratio (23 parts)
| Ref |
OEM Part # |
Part Name |
| - |
26-41365A3 |
SEAL KIT |
| 1 |
1666-8833A18 |
GEAR HOUSING ASSEMBLY, Basic-Gray Comment: (GRAY) |
| 43 |
31-821321A1 |
BEARING ASSEMBLY, Roller |
| 44 |
43-821924A1 |
GEAR ASSEMBLY, Forward (26 TEETH) |
| 45 |
23-41367 |
BUSHING |
| 46 |
813139 |
FOLLOWER, Cam |
| 47 |
52-821930A1 |
CLUTCH ASSEMBLY |
| 48 |
17-823951 |
PIN, Cross |
| 49 |
24-42204 |
SPRING |
| 50 |
44-821929 |
PROPELLER SHAFT |
| 51 |
43-821926T1 |
GEAR, Reverse - 13/26 |
| 52 |
42144T3 |
CARRIER ASSEMBLY, Bearing |
| 53 |
25-8M0214923 |
O-RING, (1.984 x .139) |
| 54 |
23-821927 |
BUSHING |
| 55 |
26-99325 |
SEAL |
| 56 |
26-821928 |
SEAL, Oil |
| 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 |
CUP ASSEMBLY, Reverse Exhaust Block |
▶Ignition Components (23 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
86617A20 |
STATOR ASSEMBLY |
| 2 |
10-4000120 |
SCREW, (M5 x 25) |
| 3 |
10-400018 |
SCREW, (M5 x 12) |
| 4 |
98450A10 |
TRIGGER ASSEMBLY |
| 5 |
11100 |
CLIP |
| 6 |
339-7452A19 |
SWITCHBOX ASSEMBLY |
| 7 |
10-40019108 |
SCREW, (M5 x 20) |
| 8 |
10-48408 |
SCREW, (#10-16 x .500) |
| 9 |
339-832757A4 |
COIL KIT |
| 10 |
10-40112 |
SCREW, (M6 x 45) |
| 11 |
88173 |
TAB WASHER |
| 12 |
23-88171 |
BUSHING |
| 13 |
10-32,11-45076 |
NUT, Brass |
| 14 |
84-813715A2 |
CABLE SET, High Tension (5 and 8.25 Inch) |
| 15 |
85-63709A1 |
BOOT/TERMINAL KIT |
| 16 |
33-8M0114746 |
SPARK PLUG (NGK#BP8HS-15) |
| 17 |
54-816311T |
TIE STRAP, (8.00 Inches) |
| 18 |
86704A10 |
STATOR ASSEMBLY |
| 19 |
10-4000123 |
SCREW, (M5 x 30) |
| 20 |
86-638131 |
TERMINAL BLOCK |
| 21 |
10-48409 |
SCREW, (#10-16 x .625) Stainless Steel |
| 22 |
10-62568 |
SCREW, (#10-16 x .375) |
| 23 |
84-88807A16 |
CABLE ASSEMBLY, (4.00 Inches) Black |
▶Manual Starter (27 parts)
| Ref |
OEM Part # |
Part Name |
| - |
42207A7 |
STARTER ASSEMBLY, Recoil |
| 1 |
42207T02 |
HOUSING, Starter |
| 2 |
8M0183792 |
BUSHING |
| 3 |
53-818853 |
RING, Retaining |
| 4 |
24-86857T01 |
SPRING |
| 5 |
42034T04 |
PULLEY, Starter |
| 6 |
50-12066Q10 |
ROPE |
| 7 |
24-86851T02 |
SPRING |
| 8 |
868501 |
CAM |
| 9 |
53-86849T01 |
RING, Retaining |
| 10 |
24-868523 |
SPRING |
| 11 |
86853T01 |
CAM |
| 12 |
10-826253 |
SCREW |
| 13 |
833161T |
PAD |
| 14 |
19018T |
REST |
| 15 |
12674 |
SUPPORT |
| 16 |
10-40019111 |
SCREW, (M5 x 35) |
| 17 |
23-309772 |
SPACER |
| 18 |
11-401385 |
NUT, (M5) |
| 19 |
42171T |
LEVER (UPPER) |
| 20 |
12-8M0204666 |
WASHER, (.203 x .500 x .032) |
| 21 |
42173T |
LEVER (LOWER) |
| 22 |
10-48408 |
SCREW, (#10-16 x .500) |
| 23 |
10-8M0204741 |
SCREW, (M6 x 20) Stainless Steel |
| 24 |
85174A1 |
HANDLE ASSEMBLY |
| 25 |
16-8161945 |
STUD, (M6 x 32) Comment: SEAPRO/MARATHON MODELS |
| 26 |
11-401386 |
NUT, (M6) Comment: SEAPRO/MARATHON MODELS |
▶Service/Support Material (1 parts)
| Ref |
OEM Part # |
Part Name |
| 0 |
37-855577A4 |
DECAL, EPA Label Information Comment: (1998) |
▶Swivel Bracket (30 parts)
| Ref |
OEM Part # |
Part Name |
| - |
37-8237011 |
DECAL, Co-Pilot |
| 1 |
3402-8831A9 |
SWIVEL BRACKET ASSEMBLY Comment: (Gray) SN# USA-0G031927/BEL-9803667 & Up |
| 2 |
22-8M0169589 |
FITTING, Grease |
| 3 |
42124A2 |
PLATE ASSEMBLY, Co-Pilot |
| 4 |
23-421402 |
BEARING |
| 5 |
23-42080T01 |
BEARING, Thrust - Upper |
| 6 |
23-42139 |
BUSHING |
| 7 |
26-42077 |
SEAL |
| 8 |
12-42373 |
THRUST WASHER |
| 9 |
24-421301 |
SPRING |
| 10 |
42082T04 |
BRACKET |
| 11 |
17-420811 |
PIN |
| 12 |
8M0075731 |
HOOK, Reverse Lock |
| 13 |
17-830741A1 |
PIN, Pivot Comment: DESIGN I |
| 14 |
91963 |
WASHER, (.390 x .600 x .032) Comment: DESIGN I |
| 15 |
17-830741A1 |
PIN ASSEMBLY, Pivot Comment: DESIGN II |
| 16 |
NSS |
NOT SOLD SEPARATE, Retaining Ring Comment: DESIGN II |
| 17 |
91963 |
WASHER, (.390 x .600 x .032) Comment: DESIGN II |
| 18 |
24-42128 |
SPRING |
| 19 |
42085F5 |
CARRYING HANDLE Comment: (GRAY) |
| 20 |
24-42127 |
SPRING |
| 21 |
53-13194 |
RING, Retaining |
| 22 |
821961 |
ROD |
| 23 |
8165621 |
DISC |
| 24 |
821958A1 |
PLATE KIT |
| 25 |
10-40011126 |
SCREW, (M6 x 13) Stainless Steel |
| 26 |
821957 |
BRAKE PLATE |
| 27 |
12-29330 |
WASHER |
| 28 |
821959 |
HANDLE |
| 29 |
11-8M0204726 |
NUT, (.375-24) |
▶Swivel Head and Steering Handle (25 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42213A25 |
SWIVEL HEAD Comment: (GRAY) |
| 2 |
23-823939 |
BUSHING |
| 3 |
8221471 |
PLATE Comment: (USE WITH 5MM SCREWS REF #4) |
| 4 |
10-4006731 |
SCREW, (M6 x 16) |
| 5 |
12-822145 |
WASHER |
| 6 |
13-826792 |
WAVE WASHER |
| 7 |
12-822146 |
WASHER |
| 8 |
821468T9 |
ARM ASSEMBLY, Steering Handle Comment: (GRAY) |
| 9 |
822441 |
RETAINER |
| 10 |
10-40011107 |
SCREW, (M5 x 16) Stainless Steel |
| 11 |
822148A2 |
COVER KIT Comment: (SIDE SHIFT) |
| 12 |
822150 |
PULLEY |
| 13 |
NSS |
NOT SOLD SEPARATE, Pulley Case (PART OF REF. #11) |
| 14 |
10-878608 |
SCREW, (#10-16 x .500) |
| 15 |
432426 |
CABLE, Throttle Comment: (SIDE SHIFT) |
| 16 |
85-960099 |
SLEEVE, (12.00 Inches) Comment: (SIDE SHIFT) |
| 17 |
37-8242004 |
DECAL Comment: (SIDE SHIFT) |
| 18 |
8M0221732 |
GRIP |
| 19 |
87-8M0104615 |
SWITCH ASSEMBLY, Stop |
| 20 |
821972T |
KNOB, Throttle |
| 21 |
892995 |
LOCK, Throttle |
| 22 |
10-8M0204707 |
SCREW, (M6 x 25) |
| 23 |
821465 |
HANDLE, Throttle Comment: (SIDE SHIFT) |
| 24 |
821463T01 |
TILLER TUBE |
| 25 |
24-96203 |
SPRING |
▶Throttle and Shift Linkage(Side Shift) (27 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
421811 |
BRACKET, Cable |
| 2 |
10-4000171 |
SCREW, (M6 x 16) |
| 3 |
10-40056107 |
SCREW, (M5 x 16) |
| 4 |
12-4002314 |
WASHER |
| 5 |
421571 |
SHIFT HANDLE |
| 6 |
44459001 |
GROMMET |
| 7 |
8155501 |
SHIFT SHAFT |
| 8 |
42156 |
LEVER |
| 9 |
42153 |
LEVER |
| 10 |
24-39627 |
SPRING |
| 11 |
10-400011 |
SCREW, (M5 x 8) |
| 12 |
421671 |
TIMING LINK |
| 13 |
421631 |
LEVER, Control |
| 14 |
10-40019111 |
SCREW, (M5 x 35) |
| 15 |
13-69708 |
WAVE WASHER |
| 16 |
24-42164 |
SPRING |
| 17 |
24-13676 |
SPRING |
| 18 |
421662 |
ACTUATOR |
| 19 |
23-421621 |
BUSHING |
| 20 |
12-69056 |
WASHER, (.255 x .620 x .030) Stainless Steel |
| 21 |
10-4000333 |
SCREW, (M6 x 40) |
| 22 |
42161 |
LINK INTERLOCK |
| 23 |
421592 |
LEVER |
| 24 |
24-42160 |
SPRING |
| 25 |
10-4000331 |
SCREW, (M6 x 30) |
| 26 |
12-69056 |
WASHER, (.255 x .620 x .030) Stainless Steel |
| 27 |
23-421581 |
BUSHING |
▶Throttle and Shift Linkage(Tiller Handle Models) (34 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
8M0047593 |
CONTROL PLATFORM |
| 2 |
94085A1 |
GEAR |
| 3 |
10-826650 |
SCREW, (M6 x 30) |
| 4 |
12-8M0214930 |
WASHER |
| 5 |
23-856737 |
SPACER (SHORT) |
| 6 |
11-400212 |
NUT, (M6) Stainless Steel |
| 7 |
42151 |
LEVER, Primary |
| 8 |
10-4000333 |
SCREW, (M6 x 40) |
| 9 |
23-856738 |
SPACER (LONG) |
| 10 |
10-4000171 |
SCREW, (M6 x 16) |
| 11 |
421671 |
TIMING LINK |
| 12 |
421631 |
LEVER, Control |
| 13 |
10-40019111 |
SCREW, (M5 x 35) |
| 14 |
421662 |
ACTUATOR |
| 15 |
42161 |
LINK INTERLOCK |
| 16 |
10-4000333 |
SCREW, (M6 x 40) |
| 17 |
12-69056 |
WASHER, (.255 x .620 x .030) Stainless Steel |
| 18 |
23-421621 |
BUSHING |
| 19 |
24-42164 |
SPRING |
| 20 |
13-69708 |
WAVE WASHER |
| 21 |
24-13676 |
SPRING |
| 22 |
8M0084745 |
LINK ASSEMBLY, Throttle |
| 23 |
8M0084742 |
SOCKET |
| 24 |
421592 |
LEVER |
| 25 |
23-421581 |
BUSHING |
| 26 |
24-42160 |
SPRING |
| 27 |
10-4000331 |
SCREW, (M6 x 30) |
| 28 |
12-69056 |
WASHER, (.255 x .620 x .030) Stainless Steel |
| 29 |
42156 |
LEVER |
| 30 |
42153 |
LEVER |
| 31 |
8155501 |
SHIFT SHAFT |
| 32 |
815567T02 |
SHIFT LINK |
| 33 |
10-400011 |
SCREW, (M5 x 8) |
| 34 |
24-39627 |
SPRING |
▶Tools-Special (1 parts)
| Ref |
OEM Part # |
Part Name |
| - |
NSS |
NOT SOLD SEPARATE, Expanding Rod (Snap-On #CG40A6) |
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.
