🔎 Mercury 10 SEA PRO Reference Library — Exploded parts diagrams (15 diagrams), specifications, common issues, and maintenance checklist.
The Mercury 10 SEA PRO is a 4-Stroke, Inline 2-Cylinder, EFI 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 |
| Horsepower |
10 HP |
| Displacement |
209 cc |
| Bore x Stroke |
55 mm x 44 mm |
| Spark Plug (Type & Gap) |
NGK DCPR6E |
| Engine Oil Capacity |
0.8 L (27 fl oz) |
| Recommended Engine Oil |
SAE 10W-30 Mercury 4-Stroke Outboard Oil |
| Gear Case Oil Capacity |
320 mL (10.8 fl oz) |
| Idle Speed (in gear) |
900 ± 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 10 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 10 SEA PRO.
▶Cylinder Block and Covers (43 parts)
| Ref |
OEM Part # |
Part Name |
| - |
19072T88 |
POWERHEAD ASSEMBLY, Complete |
| 1 |
881-9727T2 |
CYLINDER BLOCK |
| 2 |
17-85171 |
PIN, Dowel, CYLINDER BLOCK |
| 3 |
16-424632 |
STUD, CARBURETOR |
| 4 |
21-426982 |
CHECK VALVE, BLEED HOSE |
| 5 |
32-99130100 |
HOSE, BLEED |
| 6 |
16-8161949 |
STUD, CYLINDER BLOCK |
| 7 |
10-421251 |
SCREW, (M8 x 55), CRANKCASE TO CYLINDER BLOCK |
| 7A |
17-17866 |
PIN, Groove |
| 8 |
11-401386 |
NUT, (M6), CYLINDER BLOCK STUD |
| 9 |
27-191861 |
GASKET, Powerhead |
| 10 |
828435A3 |
REED BLOCK ASSEMBLY |
| 11 |
21-42657A3 |
CHECK VALVE |
| 12 |
26-42137 |
SEAL, REED BLOCK |
| 13 |
27-195982 |
GASKET, REED BLOCK |
| 14 |
10-4000171 |
SCREW, (M6 x 16), REED BLOCK |
| 15 |
34-825141 |
REED |
| 16 |
179031 |
STOP, Reed |
| 17 |
10-4005764 |
SCREW, (M3.5 x 8), REED ATTACHING |
| 18 |
11-400213 |
NUT, (M8) Stainless Steel, CARBURETOR STUD |
| 19 |
8M0048005 |
COVER, EXHAUST |
| 20 |
10-40062129 |
SCREW, (M6 x 25), EXHAUST COVER TO CYLINDER BLOCK |
| 21 |
27-19185 |
GASKET, EXHAUST COVER |
| 22 |
42365 |
PLATE, Baffle |
| 23 |
27-19184 |
GASKET, BAFFLE PLATE |
| 24 |
17863A1 |
COVER ASSEMBLY, Intake Comment: (Fitting is Installed in Intake Cover) |
| 25 |
22-15133 |
FITTING Comment: (Fitting is Installed in Intake Cover) |
| 26 |
32-99130100 |
HOSE |
| 27 |
22-59169003 |
FITTING |
| 28 |
56762 |
TIE STRAP, (4.00 Inches) |
| 29 |
27-192031 |
GASKET, INTAKE COVER |
| 30 |
10-40062129 |
SCREW, (M6 x 25), COVER TO CYLINDER BLOCK |
| 31 |
32-8M0108355 |
LINE, (57.00 Inches Bulk), TELL TALE |
| 32 |
22-94848 |
FITTING, TELL TALE HOSE-BOTTON COWL |
| 33 |
1033-8906A02 |
COVER ASSEMBLY |
| 34 |
27-19207002 |
GASKET |
| 35 |
8M0039352 |
COVER, THERMOSTAT |
| 36 |
27-19205002 |
GASKET |
| 37 |
10-40062129 |
SCREW, (M6 x 25) |
| 38 |
14586 |
THERMOSTAT (120 Degree) |
| 39 |
27-8M0204714 |
GASKET, THERMOSTAT |
| 40 |
22-291112 |
CONNECTOR (STRAIGHT) |
| 41 |
10-40062129 |
SCREW, (M6 x 25), COVER ATTACHING |
▶Driveshaft Housing (18 parts)
| Ref |
OEM Part # |
Part Name |
| - |
27-42364A92 |
GASKET SET, Engine |
| 1 |
1597-822155A2 |
HOUSING ASSEMBLY (LONG) GRAY |
| 2 |
27-195992 |
GASKET, Driveshaft Housing |
| 3 |
8M0039074 |
MOUNT |
| 4 |
42374F5 |
COVER, Mount Comment: (Gray) |
| 5 |
10-4009238 |
SCREW, (M6 x 80), MOUNT COVER |
| 6 |
13-400256 |
LOCKWASHER, (M6), COVER SCREW |
| 7 |
11-400212 |
NUT, (M6) Stainless Steel, COVER SCREW |
| 8 |
10-40011131 |
SCREW, (M6 x 35) Stainless Steel, DRIVE SHAFT HOUSING TO PLATE |
| 9 |
41344A3 |
ADAPTOR PLATE ASSEMBLY (1-1/8"I.D.TUBE) Comment: (SEA PRO 10/MARATHON 10) |
| 10 |
26-11287001 |
SEAL, Adapter Plate |
| 11 |
32-42122 |
TUBE, Water (LONG) |
| 12 |
42371 |
HOLDER, WATER TUBE |
| 13 |
27-192012 |
GASKET |
| 14 |
26-42380001 |
SEAL |
| 15 |
23-42465 |
SPACER, WATER TUBE |
| 16 |
10-400035 |
SCREW, (M5 x 16), HOUSING TO ADAPTOR PLATE |
| 17 |
445551 |
BLOCK, Bearing (LONG) |
▶Fuel Filter Assembly (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
35-889527A07 |
FILTER ASSEMBLY, Fuel |
| 2 |
858731 |
BALL, FUEL FILTER |
| 3 |
35-87946Q04 |
FILTER ASSEMBLY |
| 4 |
25-897536 |
SEAL, FUEL FILTER |
| 5 |
32-8M0108355 |
LINE, (57.00 Inches Bulk), FILTER TO CARBRETOR |
| 6 |
32-8M0108355 |
LINE, (57.00 Inches Bulk), FILTER TO ADAPTOR |
| 7 |
54-816311T |
TIE STRAP, (8.00 Inches), FUEL LINE |
| 8 |
25-18202 |
GROMMET |
| 9 |
22-15781A9 |
CONNECTOR KIT, Fuel |
| 10 |
10-8M0204707 |
SCREW, (M6 x 25), ADAPTOR |
▶Gear Hsg(Driveshaft)(Design I-Refer to Reference #17) (41 parts)
| Ref |
OEM Part # |
Part Name |
| - |
46-42089A5 |
PUMP KIT, Water |
| 1 |
1666-8833A4 |
GEAR HOUSING ASSEMBLY Comment: (Gray) |
| 2 |
23-12009 |
BUSHING, (.31 x .45 x .50), GEAR HOUSING |
| 3 |
22-8M0058389 |
SCREW, Magnetic |
| 4 |
12-191833 |
WASHER |
| 5 |
42086A1 |
SLEEVE KIT |
| 6 |
23-41345 |
SLEEVE |
| 7 |
23-42191001 |
SLEEVE |
| 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 |
43-420411 |
GEAR, Pinion |
| 16 |
12-41369 |
WASHER, THRUST |
| 17 |
45-12367 |
DRIVESHAFT (X-LONG) |
| 18 |
46-42040T5 |
BASE ASSEMBLY, Water Pump |
| 19 |
27-192043 |
GASKET (SEE DESIGN II DRAWING) |
| 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 |
44467 |
GUIDE |
| 33 |
10-4000331 |
SCREW, (M6 x 30), WATER PUMP |
| 34 |
12-8M0204649 |
WASHER, (.281 x .500 x .060) Stainless Steel |
| 35 |
42039 |
CAM, SHIFT |
| 36 |
8M0026065 |
SHIFT SHAFT (LONG) |
| 37 |
53-42389 |
E RING |
| 38 |
8M0036770 |
GUIDE |
| 39 |
10-40011109 |
SCREW, (M5 x 25) |
| 40 |
11-401385 |
NUT, (M5), GUIDE SCREW |
▶Gear Hsg(Driveshaft)(Design II-Refer to Reference #41) (43 parts)
| Ref |
OEM Part # |
Part Name |
| - |
46-42089A5 |
PUMP KIT, Water |
| 1 |
1666-8833A18 |
GEAR HOUSING ASSEMBLY, Basic-Gray Comment: (Gray) |
| 2 |
23-12009 |
BUSHING, (.31 x .45 x .50), GEAR HOUSING |
| 3 |
22-8M0058389 |
SCREW |
| 4 |
25-8M0204684 |
O-RING, Rubber |
| 5 |
822244A1 |
SLEEVE ASSEMBLY |
| 6 |
23-823944 |
SLEEVE |
| 7 |
23-823943 |
BUSHING |
| 8 |
10-79953Q04 |
SCREW KIT |
| 9 |
25-8M0204684 |
O-RING, Rubber |
| 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, THRUST |
| 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 |
44467 |
GUIDE |
| 33 |
10-4000331 |
SCREW, (M6 x 30), WATER PUMP |
| 34 |
12-8M0204649 |
WASHER, (.281 x .500 x .060) Stainless Steel |
| 35 |
42039 |
CAM, SHIFT |
| 36 |
8M0026065 |
SHIFT SHAFT (LONG) |
| 37 |
53-42389 |
E RING |
| 38 |
8M0036770 |
GUIDE |
| 39 |
10-40011109 |
SCREW, (M5 x 25) |
| 40 |
11-401385 |
NUT, (M5), GUIDE SCREW |
| 41 |
45-823390 |
DRIVESHAFT (LONG) |
| 42 |
12-822248 |
THRUST WASHER |
▶Gear Hsg(Propshaft)(Design I-Refer to Driveshaft Drawing) (23 parts)
| Ref |
OEM Part # |
Part Name |
| - |
26-41365A3 |
SEAL KIT |
| 1 |
1666-8833A4 |
GEAR HOUSING ASSEMBLY Comment: (Gray) |
| 41 |
10-82407110 |
SCREW |
| 42 |
10-8240717 |
SCREW, (M8 x 30) |
| 43 |
31-821321A1 |
BEARING ASSEMBLY, Roller |
| 44 |
43-41371A1 |
GEAR ASSEMBLY, Forward |
| 45 |
23-41367 |
BUSHING |
| 46 |
813139 |
FOLLOWER, Cam |
| 47 |
53-32449 |
RING, Retaining |
| 48 |
52-43217 |
CLUTCH |
| 49 |
17-30535 |
PIN, Cross |
| 50 |
24-42204 |
SPRING |
| 51 |
44-41370 |
PROPELLER SHAFT |
| 52 |
43-44115T |
GEAR, Reverse |
| 53 |
42144T2 |
CARRIER ASSEMBLY, Bearing |
| 54 |
25-8M0214923 |
O-RING, (1.984 x .139) |
| 55 |
23-41368 |
BUSHING |
| 56 |
26-66022 |
SEAL, Oil |
| 57 |
42037 |
THRUST HUB |
| 58 |
42201 |
CAP |
| 59 |
48-828152A12 |
PROPELLER (9-1/4X7) |
| 60 |
23-420911 |
SPACER |
| 61 |
11-40140 |
NUT, (M10) |
▶Gear Hsg(Propshaft-Design II-Refer to Driveshaft Drawing) (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 |
| 45 |
23-41367 |
BUSHING |
| 46 |
813139 |
FOLLOWER, Cam |
| 47 |
52-821930A1 |
CLUTCH |
| 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 |
| 58 |
10-8240717 |
SCREW, (M8 x 30) |
| 59 |
48-828150A12 |
PROPELLER (9.75 x 6.50) |
| 60 |
23-420911 |
SPACER |
| 61 |
11-40140 |
NUT, (M10) |
| 62 |
821932 |
THRUST HUB |
| 63 |
822559Q01 |
CUP, Reverse Exhaust Block |
▶Ignition Components (22 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 ASSEMBLY, Ignition |
| 10 |
10-40112 |
SCREW, (M6 x 45) |
| 11 |
88173 |
TAB WASHER |
| 12 |
23-88171 |
BUSHING, COIL |
| 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, SPARK PLUG |
| 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) |
▶Manual Starter(Design I) (21 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42207A1 |
HOUSING ASSEMBLY, STARTER |
| 2 |
8M0183792 |
BUSHING, STARTER ROPE |
| 3 |
53-818853 |
RING, Retaining |
| 4 |
42194A2 |
SPRING ASSEMBLY, Recoil Starter |
| 6 |
42171T |
LEVER, LOCK (UPPER) |
| 7 |
12-8M0204666 |
WASHER, (.203 x .500 x .032), UPPER LOCK LEVER |
| 8 |
42173T |
LEVER, LOCK (LOWER) |
| 9 |
10-48408 |
SCREW, (#10-16 x .500), LOWER LOCK LEVER |
| 10 |
23-43787 |
SPACER, STARTER HOUSING SCREW |
| 11 |
10-8M0204741 |
SCREW, (M6 x 20) Stainless Steel, STARTER HOUSING ATTACHING |
| 12 |
19018T |
REST |
| 15 |
12674 |
SUPPORT |
| 16 |
10-40019111 |
SCREW, (M5 x 35) |
| 17 |
23-309772 |
SPACER, REST SCREW |
| 18 |
11-401385 |
NUT, (M5), REST SCREW |
| 19 |
42034A2 |
SHEAVE, STARTER |
| 20 |
19-817362 |
CAP, STARTER SHEAVE (CAP PLUG) |
| 21 |
42209 |
TAB, STARTER SHEAVE |
| 22 |
10-48408 |
SCREW, (#10-16 x .500), TAB |
| 23 |
50-12066Q10 |
ROPE, STARTER |
| 24 |
85174A1 |
HANDLE ASSEMBLY, STARTER ROPE |
▶Manual Starter(Design II) (25 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42207T02 |
HOUSING, Starter |
| 2 |
8M0183792 |
BUSHING |
| 3 |
53-818853 |
RING, Retaining |
| 4 |
19018T |
REST |
| 5 |
12674 |
SUPPORT |
| 6 |
10-40019111 |
SCREW, (M5 x 35) |
| 7 |
23-309772 |
SPACER |
| 8 |
11-401385 |
NUT, (M5) |
| 9 |
42171T |
LEVER, LOCK (UPPER) |
| 10 |
12-8M0204666 |
WASHER, (.203 x .500 x .032) |
| 11 |
42173T |
LEVER, LOCK (LOWER) |
| 12 |
10-48408 |
SCREW, (#10-16 x .500) |
| 13 |
10-8M0204741 |
SCREW, (M6 x 20) Stainless Steel |
| 14 |
23-43787 |
SPACER, STARTER HOUSING SCREW |
| 15 |
24-86857T01 |
SPRING |
| 16 |
42034T04 |
PULLEY, Starter |
| 17 |
50-12066Q10 |
ROPE |
| 18 |
85174A1 |
HANDLE ASSEMBLY |
| 19 |
24-86851T02 |
SPRING |
| 20 |
868501 |
CAM |
| 21 |
53-86849T01 |
RING, Retaining |
| 22 |
24-868523 |
SPRING |
| 23 |
86853T01 |
CAM |
| 24 |
10-826253 |
SCREW |
| 25 |
833161T |
PAD |
▶Service/Support Material (1 parts)
| Ref |
OEM Part # |
Part Name |
| - |
90-816757930 |
OWNERS GUIDE (MARATHON 10) |
▶Swivel Bracket and Steering Handle (36 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42213A15 |
SWIVEL TUBE REPLACEMENT Comment: (Reference #6 is 1.125 Inch -12) |
| 2 |
22-8M0169589 |
FITTING, Grease |
| 3 |
44397A16 |
BRACKET ASSEMBLY Comment: (Gray)(Reference #6 is 1.125 Inch -12) |
| 4 |
10-40011110 |
SCREW, (M5 x 30) Stainless Steel Comment: (Reference #6 is 1.125 Inch -12) |
| 5 |
12-177821 |
WASHER Comment: (Reference #6 is 1.125 Inch -12) |
| 6 |
11-816880 |
NUT Comment: (Reference #6 is 1.125 Inch -12) |
| 7 |
23-817026 |
BUSHING Comment: (Reference #6 is 1.125 Inch -12) |
| 8 |
422111 |
CABLE, THROTTLE (SIDE SHIFT) |
| 9 |
11-400212 |
NUT, (M6) Stainless Steel, THROTTLE CABLE |
| 10 |
99333A2 |
TUBE ASSEMBLY, STEERING |
| 11 |
87-823609A10 |
HANDLE ASSEMBLY, Throttle (SIDE SHIFT) |
| 12 |
37-140124 |
DECAL (INTERNATIONAL SYMBOLS) |
| 13 |
10-37342 |
SCREW, (#12-14 x .375), THROTTLE HANDLE |
| 14 |
87-823609A10 |
SWITCH KIT, Stop - Throttle Handle |
| 15 |
11099A1 |
BOOT ASSEMBLY, STOP SWITCH |
| 16 |
8M0221732 |
GRIP, RUBBER |
| 17 |
3402-8831A14 |
SWIVEL BRACKET ASSEMBLY |
| 18 |
22-8M0169589 |
FITTING, Grease |
| 19 |
23-42140 |
BUSHING, UPPER |
| 20 |
23-42080T01 |
BEARING, Thrust - Upper |
| 21 |
23-42139 |
BUSHING, LOWER |
| 22 |
26-42077 |
SEAL |
| 23 |
12-42373 |
THRUST WASHER, LOWER |
| 24 |
42124A1 |
PLATE ASSEMBLY, CO-PILOT |
| 25 |
8M0075731 |
HOOK, REVERSE LOCK |
| 26 |
24-42127 |
SPRING, REVERSE HOOK |
| 27 |
42082T04 |
BRACKET |
| 28 |
24-421301 |
SPRING |
| 29 |
17-420811 |
PIN |
| 30 |
53-13194 |
RING, Retaining |
| 31 |
17-830741A1 |
PIN, Pivot |
| 32 |
91963 |
WASHER, (.390 x .600 x .032), PIVOT PIN |
| 33 |
24-42128 |
SPRING |
| 35 |
975501 |
TUBE ASSEMBLY |
| 36 |
817634 |
PLUG (SEA PRO/MARATHON 10) |
| 37 |
25-12602002 |
GROMMET |
▶Throttle and Shift Linkage(SeaPro/Marathon 10) (28 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42181 |
BRACKET, Cable |
| 2 |
10-4000171 |
SCREW, (M6 x 16) |
| 3 |
42156 |
LEVER |
| 4 |
42153 |
LEVER |
| 5 |
39527 |
TUBE |
| 6 |
39601 |
PLATE (OLD DESIGN) |
| 7 |
10-400011 |
SCREW, (M5 x 8) |
| 8 |
421571 |
SHIFT HANDLE |
| 9 |
44459001 |
GROMMET |
| 10 |
8155501 |
SHIFT SHAFT |
| 11 |
10-40056107 |
SCREW, (M5 x 16) |
| 12 |
12-4002314 |
WASHER |
| 13 |
10-4000333 |
SCREW, (M6 x 40) |
| 14 |
12-8M0214930 |
WASHER |
| 15 |
23-421621 |
BUSHING |
| 16 |
421662 |
ACTUATOR |
| 17 |
24-42164 |
SPRING |
| 18 |
24-13676 |
SPRING |
| 19 |
13-69708 |
WAVE WASHER |
| 20 |
421631 |
LEVER, Control |
| 21 |
10-40019111 |
SCREW, (M5 x 35) |
| 22 |
421671 |
TIMING LINK |
| 23 |
421592 |
LEVER |
| 24 |
24-42160 |
SPRING |
| 25 |
23-421581 |
BUSHING |
| 26 |
10-4000331 |
SCREW, (M6 x 30) |
| 27 |
12-8M0214930 |
WASHER |
| 28 |
42161 |
LINK INTERLOCK |
▶Throttle and Shift Linkage(Side Shift Models) (32 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
42181 |
BRACKET, Cable |
| 2 |
10-4000171 |
SCREW, (M6 x 16) |
| 3 |
421592 |
LEVER |
| 4 |
10-4000331 |
SCREW, (M6 x 30) |
| 5 |
12-8M0214930 |
WASHER |
| 6 |
23-421581 |
BUSHING |
| 7 |
24-42160 |
SPRING |
| 8 |
42156 |
LEVER |
| 9 |
42153 |
LEVER |
| 10 |
24-39627 |
SPRING |
| 11 |
39601 |
PLATE (OLD DESIGN) |
| 12 |
10-400011 |
SCREW, (M5 x 8) |
| 13 |
42152 |
SHIFT SHAFT Comment: (2 Piece Shift Shaft) |
| 14 |
421541 |
ACTUATOR Comment: (2 Piece Shift Shaft) |
| 15 |
815550A1 |
SHIFT SHAFT (W/BALL SOCKET) |
| 16 |
8155501 |
SHIFT SHAFT (W/O BALL SOCKET) |
| 17 |
421571 |
SHIFT HANDLE (USSE W/REF.#16) |
| 18 |
44459001 |
GROMMET |
| 19 |
14-12003 |
TAB WASHER (OLD DESIGN) |
| 20 |
421671 |
TIMING LINK |
| 21 |
421631 |
LEVER, Control |
| 22 |
10-40019111 |
SCREW, (M5 x 35) |
| 23 |
421662 |
ACTUATOR |
| 24 |
42161 |
LINK INTERLOCK |
| 25 |
10-4000333 |
SCREW, (M6 x 40) |
| 26 |
12-8M0214930 |
WASHER |
| 27 |
23-421621 |
BUSHING |
| 28 |
24-42164 |
SPRING |
| 29 |
13-69708 |
WAVE WASHER |
| 30 |
24-13676 |
SPRING |
| 31 |
10-40056107 |
SCREW, (M5 x 16) |
| 32 |
12-4002314 |
WASHER |
▶Throttle and Shift Linkage(Tiller Handle Shift Models) (43 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
421482 |
CONTROL PLATFORM |
| 2 |
94085A1 |
GEAR |
| 3 |
10-4000331 |
SCREW, (M6 x 30) |
| 4 |
12-8M0214930 |
WASHER |
| 5 |
23-856737 |
SPACER (SHORT) |
| 6 |
11-400212 |
NUT, (M6) Stainless Steel |
| 8 |
42151 |
LEVER, Primary |
| 9 |
10-4000333 |
SCREW, (M6 x 40) |
| 10 |
23-856738 |
SPACER (LONG) |
| 11 |
10-4000171 |
SCREW, (M6 x 16) |
| 12 |
421671 |
TIMING LINK |
| 13 |
421631 |
LEVER, Control |
| 14 |
10-40019111 |
SCREW, (M5 x 35) |
| 15 |
421662 |
ACTUATOR |
| 16 |
42161 |
LINK INTERLOCK |
| 17 |
10-4000333 |
SCREW, (M6 x 40) |
| 18 |
12-8M0214930 |
WASHER |
| 19 |
23-421621 |
BUSHING |
| 20 |
24-42164 |
SPRING |
| 21 |
13-69708 |
WAVE WASHER |
| 22 |
24-13676 |
SPRING |
| 23 |
8M0084745 |
LINK ASSEMBLY, Throttle |
| 24 |
8M0084742 |
SOCKET |
| 25 |
421592 |
LEVER |
| 26 |
23-421581 |
BUSHING |
| 27 |
24-42160 |
SPRING |
| 28 |
10-4000331 |
SCREW, (M6 x 30) |
| 29 |
12-8M0214930 |
WASHER |
| 30 |
42156 |
LEVER |
| 31 |
42153 |
LEVER |
| 32 |
42152 |
SHIFT SHAFT Comment: (2 Piece Shaft) |
| 33 |
421551 |
LEVER Comment: (2 Piece Shaft) |
| 34 |
10-400035 |
SCREW, (M5 x 16) Comment: (2 Piece Shaft) |
| 35 |
14-11371 |
TAB WASHER Comment: (2 Piece Shaft) |
| 36 |
1938511 |
SHIFT LINK Comment: (2 Piece Shaft) |
| 37 |
815550A1 |
SHIFT SHAFT Comment: (1 Piece Shaft) |
| 38 |
93254 |
SWIVEL BASE Comment: (1 Piece Shaft) |
| 39 |
93421 |
SWIVEL BALL Comment: (1 Piece Shaft) |
| 41 |
8155501 |
SHIFT SHAFT Comment: (Use without Swivel Ball/Swivel Base) |
| 42 |
815567T02 |
SHIFT LINK Comment: (Use without Swivel Ball/Swivel Base) |
| 43 |
10-400011 |
SCREW, (M5 x 8) |
| 44 |
24-39627 |
SPRING |
| 45 |
39601 |
PLATE (Use where Applicable) |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Mercury 10 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.
