– JLM Marine Boat Parts Limited

Mercury 350 (1571114 THRU 1812753) Parts & Diagrams

🔎 Mercury 350 Reference Library — Exploded parts diagrams (17 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 350 is a 4-Stroke, V10 64-degree, Naturally Aspirated outboard motor. Designed for large center-consoles, offshore sport-fishing boats, and multi-engine configurations.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, V10 64-degree, Naturally Aspirated
Horsepower	350 HP
Displacement	5700 cc (5.7L / 349 CID)
Bore x Stroke	92 mm x 86 mm (3.6 in. x 3.4 in.)
Spark Plug (Type & Gap)	NGK ILFR6G-E
Engine Oil Capacity	7.0 L (7.4 US qt) with filter
Recommended Engine Oil	Mercury SAE 25W-40 Marine Engine Oil
Gear Case Oil Capacity	970 mL (32.8 oz)
Idle Speed (in gear)	650–700 RPM (in gear)
Full Throttle RPM Range	5800-6400
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 350:

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 350.

▶BOTTOM COWL ASSEMBLY (24 parts)

Ref	OEM Part #	Part Name
--	33474A1	STOP SWITCH ASSEMBLY
1	2101-2173A2	BOTTOM COWL ASSEMBLY
2	29206	COVER, PLUG - BOTTOM COWL HARNESS HOLE
3	10-46270	SCREW, PLUG COVER TO BOTTOM COWL
4	11-28656	NUT, PLUG COVER TO BOTTOM COWL SCREW
5	27-33947	GASKET, POWERHEAD TO BOTTOM COWL
6	33896	MOULDING, TRIM - BOTTOM COWL
7	10-29226	SCREW, DECORATIVE - MOULDING TO BOTTOM COWL
8	13-26995	LOCKWASHER, MOULDING FASTENING SCREW
9	11-26419	NUT, MOULDING FASTENING SCREW
10	33946	BRACKET, LOCK KNOB - COWL FRONT COVER
11	10-20653	SCREW, BRACKET TO BOTTOM COWL (1")
12	10-22956	SCREW, BRACKET TO BOTTOM COWL (7/8")
13	11-24652	NUT, BRACKET TO BOTTOM COWL SCREW
14	33474	HARNESS, STOP SWITCH
15	12-30856	WASHER, SEALING - STOP SWITCH
16	30859	INSULATOR, SLEEVE - INNER SWITCH TERMINALS
17	24-30858A1	SPRING AND CONTACT ASSEMBLY
18	38950A1	COVER, STOP SWITCH
19	13-21972	LOCKWASHER, STOP SWITCH CONNECTOR
20	11-21971	NUT, STOP SWITCH CONNECTOR TO BOTTOM COWL
21	54-26550	CLIP, STOP SWITCH LEADS TO EXHAUST COVER
22	10-72169	SCREW, STOP SWITCH LEADS CLIP TO EXHAUST COVER
23	8M0084613	"D" WASHER, STOP SWITCH LEADS CLIP SCREW

▶CARBURETOR ASSEMBLY (37 parts)

Ref	OEM Part #	Part Name
--	1395-92621	REAPIR PARTS KIT
1	1335-2210	CARBURETOR ASSEMBLY, COMPLETE (KC-4A)
2	1395-8673	FLOAT ASSEMBLY
3	17-20853	PIN, FLOAT LEVER PINION
4	1399-102	LEVER, FLOAT (LOWER)
5	1399-101	LEVER, FLOAT (UPPER)
6	1395-92581	INLET NEELDE, SEAT AND GASKET
7	27-25033	GASKET, INLET SEAT
8	1399-99	GASKET, FLOAT BOWL COVER
9	1399-1133	COVER, FLOAT BOWL
10	10-22625	SCREW, FLOAT BOWL COVER (SHORT)
11	10-25850	SCREW, FLOAT BOWL COVER (LONG)
12	27-25851	GASKET, STRAINER COVER (LARGE)
13	1399-3938	SCREEN, FILTER
14	27-25849	GASKET, STRAINER COVER (SMALL)
15	1399-2371	COVER, STRAINER
16	27-25848	GASKET, STRAINER COVER SCREW
17	10-25822	SCREW, STRAINER COVER
18	1395-6027	SCREW, THROTTLE STOP LEVER
19	8146791	LEVER, THROTTLE STOP
20	1399-2012	SHAFT, THROTTLE
21	1399-2178	TUBE, IDLE
22	27-23180	GASKET, IDLE TUBE
23	10-23035	SCREW AND LOCKWASHER, THROTTLE SHUTTER
24	1399-2237	SHUTTER, THROTTLE
25	19-32299	WELCH PLUG, BODY CHANNEL
26	24-26890	SPRING, THROTTLE SHAFT RETURN
27	1399-2418	MAIN NOZZLE
28	10-28846	SCREW, PLUG - MAIN NOZZLE
29	1399-1465	JET, MAIN FUEL (.065)
30	27-28409	GASKET, MAIN FUEL JET
31	27-28406	GASKET, JET CHANNEL PLUG SCREW
32	10-28405	SCREW, PLUG - MAIN FUEL JET CHANNEL
33	1399-1713	SCREW, IDLE ADJUSTMENT
34	24-27160	SPRING, IDLE ADJUSTMENT SCREW
35	27-31402	GASKET, CARBURETOR FLANGE
36	11-29250	NUT, CARBURETOR MOUNTING STUDS

▶CARBURETOR LINKAGE (21 parts)

Ref	OEM Part #	Part Name
1	90242A1	KNOB, CHOKE ROD
2	25-20116	GROMMET, CHOKE ROD
3	33954	"S" LINK, CHOKE ROD TO CHOKE KNOB
4	10-30097	SCREW, "S" LINK TO CHOKE KNOB
5	34000	ROD, CHOKE
6	11-20110	NUT, CHOKE ROD TO "S" LINK
7	17-25391	RIVET, CHOKE ROD TO CHOKE SHUTTER
8	47804	SHUTTER, CHOKE - CARBURETOR
9	16-30172	STUD, CARBURETOR - CHOKE SHUTTER PIVOT
10	12-30164	WASHER, CHOKE SHUTTER CARBURETOR STUD
11	11-20110	NUT, CHOKE SHUTTER TO CARBURETOR STUD
12	1335-2210	CARBURETOR ASSEMBLY, COMPLETE
13	33900A1	THROTTLE LEVER ASSEMBLY
14	10-29239	SCREW, THROTTLE LEVER TO CARBURETOR
15	10-657461	STUD, CHOKE ROD SPRING TO CARBURETOR Comment: SERIAL 00000000-01584092
16	23-32427	SPACER, CHOKE ROD SPRING STUD Comment: SERIAL 00000000-01584092
17	24-32428	SPRING, CHOKE ROD TENSION Comment: SERIAL 00000000-01584092
18	11-24652	NUT, CHOKE ROD SPRING TO CARBURETOR STUD Comment: SERIAL 00000000-01584092
19A	27711	RETAINER, CHOKE ROD SPRING STARTED WITH SERIAL #1584093 AND Comment: SERIAL 01584093-09999999
20A	10-28713	SCREW, RETAINER TO CARBURETOR Comment: SERIAL 01584093-09999999
21A	24-28965	SPRING, TENSION - CHOKE ROD Comment: SERIAL 01584093-09999999

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (51 parts)

Ref	OEM Part #	Part Name
1	1427-1810A1	CLAMP BRACKET ASSEMBLY
2	22477A4	THUMB SCREW ASSEMBLY
3	12-26227	WASHER, THUMB SCREW
4	8M0041936	TUBE, TILT - CLAMP BRACKET TO SWIVEL BRACKET
5	12-52864	SHIM, CLAMP BRACKET TO SWIVEL BRACKET
6	11-858869	NUT, TILT TUBE
7	53078	CAP, PLASTIC - TILT TUBE
8	17-33985A1	SWIVEL PIN AND TOP YOKE ASSEMBLY
9	30711	BUMPER, TOP YOKE
10	10-33986	SCREW, UPPER MOUNT TO SWIVEL PIN
11	33840	BRACKET, STEERING ARM - SWIVEL PIN
12	62297	BUMPER, STEERING ARM BRACKET
13	10-69028	SCREW, STEERING ARM BRACKET TO SWIVEL PIN
14	33963	BRACKET, REMOTE STEERING Comment: ORDER REPLACEMENT SCREW ACCORDING TO LENGTH AS THICKNESS OF 33963 BRACKET WAS CHANGED ON LATER PRODUCTION ENGINES.
15	10-37612	SCREW, REMOTE BRACKET TO ARM BRACKET (1 1/4") Comment: ORDER REPLACEMENT SCREW ACCORDING TO LENGTH AS THICKNESS OF 33963 BRACKET WAS CHANGED ON LATER PRODUCTION ENGINES.
16	33969	PLATE, FRICTION - CO-PILOT (SWIVEL BRACKET)
17	10-69069	SCREW, FRICTION PLATE TO SWIVEL PIN
18	38-56267	SERIAL PLATE
19	10-25612	SCREW, DRIVE - SERIAL PLATE TO SWIVEL BRACKET
20	1455-2693A3	SWIVEL BRACKET ASSEMBLY
21	26-32911	OIL SEAL, SWIVEL BRACKET
22	22-69059	FITTING, GREASE - SWIVEL BRACKET
23	19-77633Q	LUBRICAP, SWIVEL BRACKET GREASE FITTING
24	77416T1	YOKE, BOTTOM
25	12-26837	WASHER, SWIVEL PIN TO BOTTOM YOKE (.065)
26	11-71956	NUT, RETAINING - SWIVEL PIN
27	20215	LEVER, TILT STOP - STARBOARD SIDE
28	26864	LEVER, TILT STOP - PORT SIDE
29	10-20217	SCREW, ANCHOR - TILT STOP LEVER
30	23-20216	SPACER, TILT STOP LEVER
31	10-29237	SCREW, RETAINING - TILT STOP LEVER
32	15-20473	SHIM, RETAINING SCREW - PORT SIDE SEE NOTE BELOW
33	13-20846	WASHER, WAVE - RETAINING SCREW - PORT SIDE SEE NOTE BELOW
34	11-24652	NUT, ANCHOR AND RETAINING SCREW
35	10-26483	BOLT, CLAMP BRACKET TO BOAT TRANSOM
36	12-67981	WASHER, CLAMP BRACKET BOLT
37	11-8M0204646	NUT, CLAMP BRACKET BOLT
38	26903A2	REVERSE LOCK ASSEMBLY
39	56349	SHAFT, REVERSE LOCK TO SWIVEL BRACKET
40	18-45882	COTTER PIN, REVERSE LOCK TO SHAFT
41	24-29821	SPRING, REVERSE LOCK TENSION
42	17-25598	ROLL PIN, REVERSE LOCK SPRING ATTACHING
43	33984	PLATE, CLAMP Comment: USE ON EARLY PRODUCTION ENGINES ONLY - NOW PART OF 34129A6 STEERING HANDLE ASSEMBLY
44	10-26065	SCREW, CLAMP PLATE TO SWIVEL BRACKET Comment: USE ON EARLY PRODUCTION ENGINES ONLY - NOW PART OF 34129A6 STEERING HANDLE ASSEMBLY
45	13-21804	LOCKWASHER, CLAMP PLATE FASTENING SCREW Comment: USE ON EARLY PRODUCTION ENGINES ONLY - NOW PART OF 34129A6 STEERING HANDLE ASSEMBLY
46	23026	DISC, FRICTION - SWIVEL BRACKET
47	17-8M0026068	TILT LOCK PIN ASSEMBLY
48	23-59624	SPACER, CLAMP BRACKET STUD
49	16-59625	STUD, CLAMP BRACKET
50	13-8M0204647	LOCKWASHER, CLAMP BRACKET STUD
51	11-22053	NUT, CLAMP BRACKET STUD

▶COWLING AND FRONT COVER (22 parts)

Ref	OEM Part #	Part Name
--	92-86166Q1	GLUE, ADHESIVE - BLANKET FASTENING
1	2102-2191A3	COWL FRONT COVER ASSEMBLY
2	56848	KNOB, COWL FRONT COVER FASTENING
3	12-26702	WASHER, COVER FASTENING KNOB (NYLON)
4	12-26825	WASHER, COVER FASTENING KNOB (STEEL)
5	24-31353	SPRING, TENSION - FASTENING KNOB
6	17-29077	PIN, ROLL - TENSION SPRING TO KNOB
7	34242	BLANKET, SOUND ABSORBING - COWL FRONT COVER
8	37-35620	DECAL, COWL FRONT COVER
8A	37-35620	DECAL, COWL FRONT COVER
9	37-35621	DECAL, COWL FRONT COVER (UPPER)
9A	37-35621	DECAL, COWL FRONT COVER (UPPER)
10	2122-2512A2	WRAP AROUND COWL ASSEMBLY
11	21060	HANDLE, COWL LATCH
12	53-21058	"E" RING, COWL LATCH HINGE PIN
13	17-21057	PIN, HINGE - COWL LATCH HANDLE
14	25690	SWIVEL, COWL LATCH
15	25691	HOOK, COWL LATCH FASTENING
16	39606	BLANKET, SOUND ABSORBING - WRAP AROUND COWL
17	37-35622	DECAL, WRAP AROUND COWL - STARBOARD
18	37-35623	DECAL, WRAP AROUND COWL - PORT
19	37-33936	DECAL, WRAP AROUND COWL - REAR Comment: PART OF 37-34163A1 DECAL SET

▶CRANKSHAFT, PISTON AND CONNECTING ROD ASSEMBLY (21 parts)

Ref	OEM Part #	Part Name
-	39-33945	RING, PISTON (.015 OVERSIZE) - OVERSIZED
1	28-45554	KEY, FLYWHEEL
2	422-2186	CRANKSHAFT
3	533-2761A3	MAIN BEARING ASSEMBLY, VALVE TYPE
4	17-20032	DOWEL PIN, MAIN BEARING
5	10-25313	SCREW, MAIN BEARING CLAMPING
6	11-29469	NUT, MAIN BEARING CLAMPING SCREW
7	17-20032	DOWEL PIN, MAIN BEARING TO CYLINDER BLOCK
8	34-32203A1	REED SET, MAIN BEARING (MATCHED)
9	34-64632	REED STOP, MAIN BEARING REED VALVES
10	10-77280	SCREW, REED STOP MOUNTING
11	11-29469	NUT, REED STOP MOUNTING SCREW
12	611-1885A4	CONNECTING ROD ASSEMBLY
13	10-45379	SCREW, CONNECTING ROD
14	11-20061	NUT, CONNECTING ROD SCREW
15	29-47897	BEARING, NEEDLE - CRANKPIN
16	29-39656	BEARING NEEDLE - PISTON PIN
17	12-29681	WASHER, NEEDLE BEARING RETAINING
18	732-2735A2	PISTON AND PISTON PIN ASSEMBLY
19	40-32118	LOCK RING, PISTON PIN
20	39-32921	RING, PISTON

▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (56 parts)

Ref	OEM Part #	Part Name
1	1130-2177A2	END CAP ASSEMBLY, UPPER
2	30-63742T	BALL BEARING, UPPER END CAP
3	25-31305	"O" RING, UPPER END CAP
4	31-33958	BEARING, ROLLER - UPPER END CAP
5	26-33995	OIL SEAL
6	10-29198	SCREW, UPPER END CAP MOUNTING
7	53-78201	BRACKET, EXTENSION - UPPER END CAP SCREW
8	15-33903A1	SHIM, UPPER END CAP TO CRANKCASE AND BLOCK (.002-3-5-10)
9	33899	CLAMP, HOLD DOWN RING - STATOR PLATE
10	10-32228	SCREW, HOLD DOWN RING CLAMP TO UPPER END CAP
11	24-27087	SPRING, HOLD DOWN RING CLAMP SCREW
12	838-2176A2	CYLINDER BLOCK AND CRANKCASE ASSEMBLY
13	23-26348	BUSHING, CRANKCASE
14	16-64936	STUD, CARBURETOR MOUNTING (1 3/16")
15	16-33111	STUD, CRANKCASE TO DRIVE SHAFT HOUSING (1 5/8")
16	17-23784	DOWEL PIN, CRANKCASE TO CYLINDER BLOCK
17	17-20032	DOWEL PIN, CYLINDER BLOCK TO MAIN BEARING
18	16-8M0034463	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (3 7/16")
19	16-29989	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (1 15/16")
20	22-328022	PLUG, PIPE - WATER PRESSURE HOLE
21	33758	COVER, TRANSFER PORT
22	27-33955	GASKET, TRANSFER PORT COVER
23	10-20540	SCREW. TRANSFER PORT COVER MOUNTING
24	10-78841	SCREW, CRANKCASE TO CYLINDER BLOCK (1 1/2")
25	10-22039	SCREW, CRANKCASE TO CYLINDER BLOCK (2 3/4")
26	10-26066	SCREW, CRANKCASE TO CYLINDER BLOCK (1 1/4")
27	11-29250	NUT, CRANKCASE FASTENING SCREW
28	10-98260	SCREW, MAIN BEARING LOCKING
29	14-20091	TAB WASHER, BEARING LOCKING SCREW
30	15-20085A1	SHIM, LOWER END CAP TO CRANKCASE AND BLOCK (.002-3-5-10)
31	1126-2187A1	END CAP ASSEMBLY, LOWER
32	21-28481A1	CHECK VALVE ASSEMBLY, LOWER END CAP
33	26-29478	OIL SEAL, LOWER
34	26-41953	OIL SEAL, UPPER
35	30-63742T	BALL BEARING, LOWER END CAP
36	25-20081	"O" RING, LOWER END CAP
37	10-30225	SCREW, LOWER END CAP MOUNTING
38	10-21365	SCREW, IDLE STOP - CRANKCASE
39	11-20890	NUT, IDLE STOP SCREW
40	26852	CAP, NYLON - IDLE STOP SCREW
41	27-33950	GASKET, CYLINDER BLOCK TO MANIFOLD PLATE
42	33948	PLATE, EXHAUST MANIFOLD
43	27-33949	GASKET, MANIFOLD PLATE TO EXHAUST COVER
44	33757	COVER, EXHAUST MANIFOLD
45	10-28636	SCREW, MANIFOLD COVER TO CYLINDER BLOCK
46	10-21365	SCREW< SPARK ADVANCE - EXHAUST COVER
47	11-20890	NUT, SPARK ADVANCE SCREW
48	26852	CAP, NYLON - SPARK ADVANCE SCREW
49	30212	TERMINAL BLOCK, EXHAUST MANIFOLD COVER
50	10-72169	SCREW, TERMINAL BLOCK TO EXHAUST MANIFOLD COVER
51	10-62568	SCREW, HARNESS LEADS TO TERMINAL BLOCK
52	1015-2175A1	CYLINDER BLOCK COVER ASSEMBLY
53	23-26348	BUSHING, CYLINDER BLOCK COVER
54	27-33951	GASKET, CYLINDER BLOCK COVER
55	10-20653	SCREW, CYLINDER BLOCK COVER MOUNTING
56	11-24652	NUT, COVER MOUNTING SCREW

▶DRIVE SHAFT HOUSING ASSEMBLY (52 parts)

Ref	OEM Part #	Part Name
1	1545-2337A4	HOUSING, DRIVE SHAFT
2	16-8M0022145	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING (1 3/4")
3	16-57935	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING (3")
4	32-31998	TUBE, WATER INLET
5	25-24961	RING, RUBBER - WATER INLET TUBE
6	26-25192	SEAL, WATER INLET TUBE
7	23-23651	SLEEVE, WATER INLET TUBE
8	35394A1	COVER ASSEMBLY, TRIM - DRIVE SHAFT HOUSING
9	37-35393	DECAL, TRIM COVER
10	10-30742	SCREW, TRIM COVER TO DRIVE SHAFT HOUSING
11	37-33966	DECAL, "FULL GEAR SHIFT" - STARBOARD Comment: PART OF 37-34163A1 DECAL SET
12	37-33967	DECAL, "FULL GEAR SHIFT" - PORT Comment: PART OF 37-34163A1 DECAL SET
13	32016	BAFFLE, EXHAUST RELIEF
14	10-25255	SCREW, RELIEF BAFFLE TO DRIVE SHAFT HOUSING
15	27-31995	GASKET, DRIVE SHAFT HOUSING TO BOTTOM COWL
16	11-862902	NUT, POWERHEAD STUDS
17	19-32298	PLUG, PLASTIC - WATER PICK-UP SCREW HOLE
18	11-8M0204653	NUT, GEAR HOUSING TO DRIVE SHAFT HOUSING STUDS
19	18-25191	COTTER PIN, PUSH ROD TO REVERSE LOCK
20	32102	ROD, PUSH - REVERSE LOCK
21	17-24887	PIN, REVERSE LOCK LEVER
22	24-25122	SPRING, TENSION - PUSH ROD
23	52920	LEVER, REVERSE LOCK
24	25305	CAP, RUBBER - UPPER MOUNT BOLT NUT
25	11-23161	NUT, UPPER MOUNT BOLT
26	12-30519	WASHER, UPPER MOUNT BOLT (3/8 ID)
27	12-30521	WASHER, RUBBER - UPPER MOUNT BOLT
28	12-30520	WASHER, UPPER MOUNT BOLT (37/64 ID)
29	79680A1	COVER, UPPER MOUNT - OUTSIDE HALF
30	79680A1	COVER, UPPER MOUNT - INSIDE HALF
31	75301	MOUNT, RUBBER - UPPER
32	24929	PACKING, "U" CUP - UPPER MOUNT COVERS
33	10-37941	SCREW, UPPER MOUNT COVER - REAR (1 3/4")
34	10-28772	SCREW, UPPER MOUNT COVER - FRONT (1 1/2")
35	12-8M0204649	WASHER, MOUNT COVER FASTENING SCREW
36	11-35888	NUT, UPPER MOUNT COVER FASTENING SCREW
37	25067	BUMPER, RUBBER - LOWER MOUNT SCREW
38	10-75284	SCREW, LOWER MOUNT (5 1/2")
39	12-28051	WASHER, LOWER MOUNT SCREW
40	12-28053	WASHER, RUBBER - LOWER MOUNT SCREW
41	75302T1	MOUNT, RUBBER - LOWER
42	12-30119	WASHER, LOWER MOUNT SCREW (1/8")
43	11-25096	NUT, LOWER MOUNT SCREW
44	22-390721	PLUG, GREASE - REVERSE LOCK HOLE
45	28242	COVER, LOWER MOUNT (STARBOARD SIDE)
46	10-29256	SCREW, LOWER MOUNT COVER TO DRIVE SHAFT HOUSING
47	69592F1	CLAMP, LOWER MOUNT TO DRIVE SHAFT HOUSING
48	24-35522	SPRING, TENSION - LOWER MOUNT CLAMP
49	10-29256	SCREW, LOWER MOUNT CLAMP TO DRIVE SHAFT HOUSING
50	11-35521	NUT, LOWER MOUNT CLAMP COVER
51	35474T	COVER, LOWER MOUNT CLAMP
52	10-29722	SCREW, COVER TO LOWER MOUNT CLAMP

▶FLYWHEEL ASSEMBLY AND THROTTLE CONTROL LINKAGE (33 parts)

Ref	OEM Part #	Part Name
-	25-37340	"O" RING, FLYWHEEL HUB
1	11-8M0214915	NUT, FLYWHEEL
2	12-36281	WASHER, FLYWHEEL NUT
3	28-45554	KEY, FLYWHEEL DRIVE
4	218-2241A1	FLYWHEEL ASSEMBLY, COMPLETE
5	10-35562	SCREW, FLEXIBLE PLATE TO FLYWHEEL
6	50-33000A1	RATCHET ASSEMBLY, FYWHEEL
7	10-32417	SCREW, RATCHET TO FLYWHEEL
8	10-34290	SCREW, RATCHET TO FLYWHEEL
9	13-26992	LOCKWASHER, RATCHET TO FLYWHEEL SCREW
10	398-2221A1	STATOR PLATE ASSEMBLY, COMPLETE
11	36442A1	SHIELD ASSEMBLY, STATOR PLATE
12	10-45742	SCREW, SHIELD TO STATOR PLATE
13	13-26996	LOCKWASHER, SHIELD FASTENING SCREW
14	33904	RING, HOLD DOWN - STATOR PLATE
15	10-35400	SCREW, HOLD DOWN RING TO STATOR PLATE
16	15-33910015	SHIM, STATOR PLATE TO UPPER END CAP (.015)
17	33974	BRACKET, THROTTLE CAM
18	10-29722	SCREW, THROTTLE CAM BRACKET TO STATOR PLATE
19	34068	CAM, ADJUSTING - THROTTLE
20	10-31903	SCREW, ADJUSTING CAM TO BRACKET
21	33970	ROD, THROTTLE CONTROL
22	28232	TOGGLE BOLT, THROTTLE CONTROL ROD
23	12-26014	WASHER, THROTTLE CONTROL ROD
24	18-26811	COTTER PIN, THROTTLE CONTROL ROD
25	33973	SWIVEL, THROTTLE CONTROL ROD TO ACTUATING LEVER
26	33842	LEVER, THROTTLE ACTUATING (UPPER)
27	33902	ROD, VERTICAL
28	12-26825	WASHER, VERTICAL ROD
29	23-22981	BUSHING, NYLON - VERTICAL ROD
30	17-25870	PIN, ROLL - VERTICAL ROD
31	33833	LEVER, THROTTLE ACTUATING (LOWER)
32	10-25781	SCREW, SET - THROTTLE ACTUATING LEVERS

▶FUEL PUMP ASSEMBLY (24 parts)

Ref	OEM Part #	Part Name
1	30269A2	FUEL PUMP ASSEMBLY
2	27-23005	GASKET, CHECK VALVE TO HOUSING
3	21-8M0082362	VALVE, CHECK
4	23004	RETAINER, CHECK VALVE
5	10-43725	SCREW, RETAINER TO HOUSING
6	27-24863	GASKET, FUEL PUMP
7	23014	DIAPHRAGM, FUEL PUMP
8	30275	COVER, FUEL PUMP
9	27-30276	GASKET, FUEL PUMP COVER
10	10-30274	SCREW, FUEL PUMP MOUNTING (1 3/4")
11	10-29878	SCREW, FUEL PUMP MOUNTIN (1 1/2")
12	22-22949	CONNECTOR, PUMP INLET TO FUEL LINE
13	22-22946	SLEEVE, RUBBER - CONNECTOR
14	22-22948	NUT, CONNECTOR TO FUEL LINE
15	32-34066	FUEL LINE, FUEL PUMP TO ADAPTOR
16	22833	ADAPTOR, CHECK UNIT (FUEL PUMP)
17	23069	STEM, CHECK UNIT ADAPTOR
18	25-16524	"O" RING, ADAPTOR STEM
19	24-23067T	SPRING, ADAPTOR STEM
20	30188	CUP WASHER, ADAPTOR
21	10-56500	SCREW, ADAPTOR TO BOTTOM COWL
22	11-24652	NUT, ADAPTOR SCREW
23	32-34243	FUEL LINE, FUEL PUMP TO CARBURETOR (7 1/8")
24	22-8M0123050	ELBOW, FUEL PUMP TO CARBURETOR FUEL LINE

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (43 parts)

Ref	OEM Part #	Part Name
-	1626-2040A6	GEAR HOUSING ASSEMBLY, COMPLETE (STANDARD) - SEE NOTE BELOW
1	1626-2040A1	GEAR HOUSING ASSEMBLY
2	16-32027	STUD, WATER PUMP BODY AND BASE TO GEAR HOUSING
3	16-32017	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING
4	31-62091T	BEARING, ROLLER - DRIVE SHAFT
5	56622A1	SHAFT, SHIFT - LOWER
6	53-29641	CLIP, RETAINING - SHIFT SHAFT
7	25-25439	"O" RING, SHIFT SHAFT BUSHING
8	23-46284A1	BUSHING ASSEMBLY, SHIFT SHAFT
9	26-892361	OIL SEAL, SHIFT SHAFT BUSHING
10	52918	CAM, LOWER - REVERSE LOCKING
11	52919	CAM, UPPER - REVERSE LOCKING
12	45-31996	/DRIVE SHAFT (STANDARD)
13	15-20929A1	SHIM, DRIVE SHAFT BEARING TO GEAR HOUSING
14	30-72961	BEARING, BALL - DRIVE SHAFT
15	53-29116	RING, SNAP - BALL BEARING RETAINING
16	15-20929A1	SHIM, DRIVE SHAFT BEARING TO WATER PUMP BASE
17	43-33843	GEAR, PINION - DRIVE SHAFT
18	14-29163	TAB WASHER, PINION GEAR FASTENING SCREW
19	10-20925	SCREW, PINION GEAR TO DRIVE SHAFT
20	27-32771	GASKET, WATER PUMP BASE TO GEAR HOUSING
21	25-26855	"O" RING, WATER PUMP BASE
22	46-39531A1	WATER PUMP BASE ASSEMBLY
23	26-90562	OIL SEAL, WATER PUMP BASE
24	17-29596T	DOWEL PIN, WATER PUMP BASE TO WATER PUMP BODY
25	27-19553	GASKET, LOWER - WATER PUMP BASE TO FACE PLATE
26	32768	PLATE, FACE - WATER PUMP BASE TO WATER PUMP BODY
27	27-19551	GASKET, UPPER - FACE PLATE TO WATER PUMP BODY
28	47-89983T	IMPELLER, WATER PUMP
29	28-8M0032837	PIN, IMPELLER DRIVE
30	46-60366Q1	WATER PUMP BODY ASSEMBLY
31	32001	INSERT, WATER PUMP BODY
32	26-32121	OIL SEAL, WATER PUMP BODY
33	13-26992	LOCKWASHER, WATER PUMP BODY AND BASE STUDS
34	11-29598	NUT, WATER PUMP BODY AND BASE FASTENING STUDS
35	26-25192	SEAL, WATER PUMP BODY TO WATER INLET TUBE
36	25-20273	RING, RUBBER - CENTRIFUGAL SLINGER (DRIVE SHAFT)
37	25-29619	"O" RING, UPPER - DRIVE SHAFT
38	10-29608	SCREW, GEAR HOUSING FLUSHING HOLE
39	27-8M0214916	GASKET, GEAR HOUSING FLUSHING HOLE SCREW
40	26-8M0214917	SEAL, GEAR HOUSING FLUSHING HOLE
41	10-79953Q04	SCREW, GREASE FILLER AND VENT HOLE
42	12-191833	WASHER, GREASE FILLER AND VENT HOLE SCREW

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (36 parts)

Ref	OEM Part #	Part Name
-	1626-2040A6	GEAR HOUSING ASS'Y, COMP. (STANDARD) - SEE NOTE BELOW
--	43-33844A4	REVERESE GEAR ASSEMBLY, COMPLETE
1	1626-2040A1	GEAR HOUSING ASSEMBLY (SEE PAGE 26 FOR PARTS BREAKDOWN)
43	760394	CAM, SHIFT
44	20930	FOLLOWER, CAM
45	20843	SLIDE, CROSS PIN
46	24-20254	SPRING, COMPRESSION - CAM FOLLOWER
47	15-31154A1	SHIM BEARING CUP TO GEAR HOUSING
48	43-33844A4	FORWARDING GEAR ASSEMBLY
49	31-20249	BEARING, ROLLER - FORWARD GEAR ASSEMBLY
50	31-31215A1	TAPERED ROLLER BEARING ASSEMBLY
51	31-31216	CUP, TAPERED ROLLER BEARING
52	52-32189	RATCHET, SLIDING CLUTCH
53	17-20841	PIN, CROSS - RATCHET TO PROPELLER SHAFT
54	53-20842	RING, RETAINING - CROSS PIN
55	44-32000	SHAFT, PROPELLER
56	43-33844A4	REVERSE GEAR ASSEMBLY
57	12-32004	WASHER, THRUST - REVERSE GEAR
58	30-20839T	BEARING, BALL - REVERSE GEAR
59	15-20927A1	SHIM, THRUST WASHER TO GEAR HOUSING
60	25-31986	"O" RING, BEARING CARRIER
61	53014T1	BEARING CARRIER ASSEMBLY
62	31-20249	BEARING, ROLLER - BEARING CARRIER
63	26-90562	OIL SEAL, BEARING CARRIER
64	28-30281	KEY, LOCATING - BEARING CARRIER
65	12-31993	WASHER, GEAR HOUSING COVER
66	11-87763	COVER, GEAR HOUSING
67	12-25251	WASHER, BACKING - PROPELLER SHAFT (1/8)
68	38859A1	THRUST HUB AND WASHER ASSEMBLY
69	12-31992	WASHER, CUPPED - THRUST HUB
70	12-32007	WASHER, SPLINED - PROPELLER SHAFT
71	11-82671120	NUT, PROPELLER
72	97-31640Q4	TRIM TAB, GEAR HOUSING
73	10-32470	SCREW, TRIM TAB TO GEAR HOUSING
74	11-8M0204653	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING STUD (7/16)
75	11-23161	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING STUD (3/8)

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
-	1395-92621	REPAIR PARTS KIT (CARBURETOR)

▶STARTER MOTOR, STARTER SOLENOID AND WIRING HARNESS (48 parts)

Ref	OEM Part #	Part Name
1	31041	CHOKE SOLENOID, TOP COWL
2	30050	DISCONNECT, CHOKE SOLENOID TERMINALS
3	28016A1	GROUND STRAP ASSEMBLY
4	10-20540	SCREW, CHOKE SOLENOID TO TOP COWL (5/8") EARLY MODELS
4 & 6	10-35194	SCREW, CHOKE SOLENOID TO TOP COWL (5/8") LATE MODELS
5	13-26992	LOCKWASHER, CHOKE SOLENOID SCREW (1/4") EARLY MODELS
6	10-24773	SCREW, CHOKE SOLENOID TO TOP COWL (1/2") EARLY MODELS
7	12,13-26991	LOCKWASHER, CHOKE SOLENOID SCREW EARLY MODELS
8	48315A4	PLUNGER ASSEMBLY, CHOKE SOLENOID
9	12-30164	WASHER, CHOKE SOLENOID LINK
10	18-26953	COTTER PIN, CHOKE SOLENOID LINK FASTENING
11	54-22783	"S" CLIP, CHOKE SOLENOID LEADS TO TOP COWL
12	47804	SHUTTER, CHOKE - CARBURETOR
13	23-30438	BUSHING, NYLON - CHOKE SHUTTER
14	30212	TERMINAL BLOCK, CYLINDER BLOCK
15	10-72169	SCREW, TERMINAL BLOCK TO CYLINDER BLOCK
16	10-62568	SCREW, WIRING HARNESS LEADS TO TERMINAL BLOCK
17	218-2242A1	FLYWHEEL ASSEMBLY, COMPLETE
18	10-35562	SCREW, FLEXIBLE PLATE TO FLYWHEEL
19	50-33000A1	RATCHET ASSEMBLY, FLYWHEEL
20	10-32417	SCREW, RATCHEL TO FLYWHEEL
21	10-34290	SCREW, RATCHET TO FLYWHEEL
22	13-26992	LOCKWASHER, RATCHET TO FLYWHEEL SCREW
23	50-55601A2	STARTER MOTOR ASSEMBLY
24	10-35213	SCREW, STARTER MOTOR TO CRANKCASE LATE MODELS
25	13-8M0204647	LOCKWASHER, STARTER MOTOR FASTENING SCREW EARLY MODELS
26	26511	WIRE, STARTER MOTOR TO STARTER SOLENOID
27	10-69035	SCREW, GROUND WIRE TO STARTER MOTOR
28	13-26992	LOCKWASHER, GROUND WIRE FASTENING SCREW
29	28016A1	GROUND STRAP ASS'Y, STARTER SOLENOID AND CYLINDER BLOCK
30	32445A1	SOLENOID, STARTER
31	10-29238	SCREW, STARTER SOLENOID TO STARTER MOTOR
32	10,13-26996	LOCKWASHER, STARTER SOLENOID TERMINAL
33	10,11-68219	NUT, STARTER SOLENOID TERMINAL
34	13-8M0204647	LOCKWASHER, STARTER SOLENOID TERMINAL (5/16)
35	11-22053	NUT, STARTER SOLENOID TERMINAL (5/16)
36	11-26062	NUT, CAP - STARTER SOLENOID TERMINAL - OUTSIDE (5/16)
37	34229	WIRING HARNESS (INTERNAL)
38	26079A2	PLATE, BACKING - WIRING HARNESS
39	10-45893	SCREW, BACKING PLATE TO BOTTOM COWL
40	24-28975	SPRING, GARTER - INTERNAL WIRING HARNESS
41	34228	SUPPORT, EXTERNAL WIRING HARNESS
42	10-35092	SCREW, SUPPORT TO BOTTOM COWL
43	11-24652	NUT, SUPPORT FASTENING SCREW
44	54-24836	CLIP, WIRING HARNESS TO CRANKCASE BRACKET
45	10-20401	SCREW, WIRING HARNESS CLIP TO CRANKCASE BRACKET
46	8M0084613	"D" WASHER, WIRING HARNESS CLIP SCREW
47	54-22740	CLIP, WIRING HARNESS LEADS

▶STATOR PLATE ASSEMBLY (33 parts)

Ref	OEM Part #	Part Name
-	398-2221A1	STATOR PLATE ASSEMBLY, COMPLETE
1	398-2221	STATOR PLATE AND CORE
2	398-2568T1	COIL ASSEMBLY
3	54-31059	CLIP, CORE AND COIL
4	398-2207	FELT, CAM - BREAKER
5	398-732	CLIP, GROUND WIRE LEAD
6	10-21130	SCREW, GROUND TERMINAL
7	398-2203	CONDENSER ASSEMBLY
8	10-46718	SCREW, CONDENSER FASTENING (3/4")
9	10-38395	SCREW, CONDENSER FASTENING (1 1/4")
10	13-21134	LOCKWASHER, CONDENSER FASTENING SCREW
11	12-21135	WASHER, CONDENSER FASTENING SCREW
12	54-39844A1	CLAMP, LEAD WIRE
13	12-21135	WASHER, LEAD WIRE CLAMP SCREW
14	13-21134	LOCKWASHER, LEAD WIRE CLAMP SCREW
15	11-21923T	NUT, LEAD WIRE CLAMP SCREW
16	398-2202	BREAKER ASSEMBLY
17	10-33988	SCREW AND LOCKWASHER, BREAKER FASTENING
18	12-21135	WASHER, TERMINAL SCREW
19	13-21134	LOCKWASHER, TERMINAL SCREW
20	11-21923T	NUT, TERMINAL SCREW
21	398-2206	GROUND LEAD, STATOR TO TERMINAL BLOCK
22	23-30419	SLEEVE, INSULATION - GROUND LEAD
23	84-821945A46	LEAD WIRE
24	84-821945A46	LEAD WIRE, TOP
25	85-63709A1	PROTECTOR, SPARK PLUG
26	20117	MARKER, "TOP" - LEAD WIRE
27	33-813416	SPARK PLUG (CHAMPION - J6J)
28	398-2208	COVER, DUST - STATOR PLATE
29	10-21130	SCREW, DUST COVER TO STATOR PLATE
30	54-24836	CLIP, GROUND LEAD
31	10-8M0113176	SCREW, GROUND LEAD CLIP TO EXTENSION BRACKET
32	8M0084613	"D" WASHER, CLIP FASTENING SCREW

▶THROTTLE AND SHIFT LINKAGE (48 parts)

Ref	OEM Part #	Part Name
1	2101-2173A2	BOTTOM COWL ASSEMBLY (SEE PAGE 18 FOR PARTS BREAKDOWN)
2	20557	BRACKET, CABLE END ANCHOR
3	10-29200	SCREW, CABLE END ANCHOR BRACKET TO BOTTOM COWL
4	21968	STOP BLOCK, THROTTLE LEVER
5	10-28636	SCREW, STOP BLOCK TO BOTTOM COWL
6	12-21967	WASHER, STOP BLOCK TO BOTTOM COWL SCREW
7	33833	LEVER, THROTTLE ACTUATING - BOTTOM COWL
8	27947	SWIVEL, THROTTLE ACTUATING LEVER
9	33898	ROD, THROTTLE CONTROL
10	11-25168	NUT, ADJUSTING - THROTTLE CONTROL ROD
11	33953	ROD (SLEEVE), THROTTLE CONTROL ROD TO THROTTLE CONTROL LEVER
12	12-20583	WASHER, THROTTLE CONTROL LEVER
13	18-210711	COTTER PIN, THROTTLE CONTROL LEVER
14	33835	LEVER, THROTTLE CONTROL
15	10-29878	SCREW, THROTTLE CONTROL LEVER TO BOTTOM COWL
16	12-24676	WASHER, THROTTLE CONTROL LEVER FASTENING SCREW
17	23-33906	SPACER, THROTTLE CONTROL LEVER FASTENING SCREW
18	23-65830	BUSHING, THROTTLE CONTROL LEVER TO BOTTOM COWL
19	17-30978A1	PIN ASSEMBLY, CLEVIS YOKE
20	17-239281	ROLL PIN, CLEVIS YOKE PIN
21	10-20584	SCREW, CLEVIS YOKE PIN FASTENING
22	13-29402	WASHER, WAVE - CLEVIS YOKE PIN FASTENING SCREW
23	11-8M0204718	NUT, CLEVIS YOKE PIN FASTENING SCREW
24	33901A1	SHIFT SHAFT ASSEMBLY, UPPER
25	24-30621	SPRING, DETENT - SHIFT SHAFT
26	10-98256	SCREW, DETNET SPRING TO BOTTOM COWL
27	12-69057	WASHER, DETENT SPRING FASTENING SCREW
28	11-20013	NUT, DETENT SPRING FASTENING SCREW
29	33837	ROD, THROTTLE STOP CONTROL
30	11-25168	NUT, ADJUSTING - THROTTLE STOP CONTROL ROD
31	33953	ROD (SLEEVE), THROTTLE STOP CONTROL ROD TO THROTTLE STOP LEV
32	12-20583	WASHER, THROTTLE STOP LEVER
33	18-210711	COTTER PIN, THROTTLE STOP LEVER
34	33834	LEVER, THROTTLE STOP
35	10-34438	SCREW, THROTTLE STOP LEVER TO BOTTOM COWL (2 3/8") Comment: SERIAL 01584093-09999999
36	12-34437	WASHER, THROTTLE STOP LEVER FASTENING SCREW Comment: SERIAL 01584093-09999999
37	23-34440	BUSHING, THROTTLE STOP LEVER FASTENING SCREW Comment: SERIAL 01584093-09999999
38	11-29250	NUT, THROTTLE STOP LEVER FASTENING SCREW Comment: SERIAL 01584093-09999999
39	23-34103	BUSHING, NYLON - THROTTLE STOP LEVER FASTENING SCREW
40	33841	LEVER, SHIFT CONTROL
41	10-47273	SCREW, SHIFT CONTROL LEVER TO BOTTOM COWL
42	12-8M0042641	WASHER, SHIFT CONTROL LEVER FASTENING SCREW
43	23-29529	BUSHING, SHIFT CONTROL LEVER FASTENING SCREW
44	33953	ROD (SLEEVE), SHIFT CONTROL END
45	11-25168	NUT, ADJUSTING - SHIFT SHAFT END
46	33982	ROD, LINK - SHIFT SHAFT END
47	12-20583	WASHER, SHIFT CONTROL END ROD
48	18-210711	COTTER PIN, SHIFT CONTROL END ROD

▶TOP COWL AND STARTER ASSEMBLY (47 parts)

Ref	OEM Part #	Part Name
--	34433	BRACKET, TRIM MOULDING TENSION -LATE MODELS
1	2100-2172A2	TOP COWL ASSEMBLY
2	25-20116	GROMMET, CHOKE KNOB
3	16-20353	STUD, FRONT AND REAR - TOP COWL TO CYLINDER BLOCK
4	12-20028	WASHER, TOP COWL STUD (1/16")
5	12-69057	WASHER, TOP COWL STUD (3/4" OD)
6	12-20583	WASHER, TOP COWL STUD (1/32")
7	11-8267089	NUT, TOP COWL FASTENING STUD
8	20155	RETAINER, STARTER SPRING
9	24-29340T02	SPRING, STARTER REWIND
10	23-28912	BUSHING, SPRING GUIDE
11	50-30994	SHEAVE ASSEMBLY
12	30596	PAWL, STARTER
13	13-36206	WASHER, WAVE - STARTER PAWL
14	23-28919	BUSHING, NYLON - SHEAVE SHAFT SPACER
15	45477A1	SPACER, SHEAVE SHAFT
16	26179	RETAINER, WAVE WASHER
17	12-26180	WASHER, WAVE WASHER RETAINER
18	13-20160	WASHER, WAVE - RETAINER TENSION
19	30595	PLATE, RETAINER - STARTER PAWL
20	45477A1	SHAFT, SHEAVE
21	34735A1	TRIM MOULDING ASSEMBLY, TOP COWL -LATE MODELS
22	10-23015	SCREW, BRACKET AND MOULDING TO TOP COWL -LATE MODELS
23	10-29226	SCREW, DECORATIVE - MOULDING TO TOP COWL EARLY MODELS
24	12-34434	WASHER, BRACKET AND MOULDING TO TOP COWL SCREW LATE MODEL
25	11-20110	NUT, BRACKET AND MOULDING TO TOP COWL SCREW -LATE MODELS
26	50-12066Q10	STARTER CABLE ASSEMBLY
27	28747	HANDLE, STARTER CABLE
28	79470A1	RETAINER, STARTER CABLE AND HANDLE
29	30045	PLATE, ROPE GUIDE
30	10-28642	SCREW, DRIVE - ROPE GUIDE PLATE TO TOP COWL
31	14-20165	TAB WASHER, SHEAVE SHAFT NUT
32	11-20166	NUT, SHEAVE SHAFT (LEFT HAND THREAD)
33	33952	SCREEN, VENT - TOP COWL
34	10-35193	SCREW, VENT SCREEN TO TOP COWL
35	31875	HANDLE, CHROME - TOP COWL
36	31003	HANDLE, INSIDE - TOP COWL
37	10-56500	SCREW, FRONT - HANDLE TO TOP COWL (1 1/4")
38	11-8267089	NUT, FRONT HANDLE FASTENING SCREW
39	35496	PAD, BUMPER - TOP COWL HANDLE
40	12-69057	WASHER, LOWER HANDLE STUD (3/4" OD)
41	12-8M0204649	WASHER, CENTER HANDLE STUD (1/2" OD)
42	11-21825	NUT, INSIDE HANDLE TO CHROME HANDLE STUDS
43	10-29199	SCREW, CENTER - HANDLE TO TOP COWL (1")
44	23-29561	BUSHING, REAR HANDLE STUD
45	13-26992	LOCKWASHER, REAR HANDLE STUD
46	11-21825	NUT, REAR HANDLE STUD

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 350 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.

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