– JLM Marine Boat Parts Limited

Mercury 900 (6 CYL.) (1766824 THRU 1869775) Parts & Diagrams

🔎 Mercury 900 (6 CYL.) Reference Library — Exploded parts diagrams (17 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 900 (6 CYL.) is a 4-Stroke, Inline 4-Cylinder, EFI, SOHC outboard motor. Suited for bay boats, pontoons, and center-console fishing boats requiring reliable mid-range power.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 4-Cylinder, EFI, SOHC
Horsepower	90 HP
Displacement	2100 cc
Bore x Stroke	90 mm x 81 mm
Spark Plug (Type & Gap)	NGK IZFR6F-11
Engine Oil Capacity	5.2 L (5.5 quart)
Recommended Engine Oil	Mercury FourStroke Oil 10W-30
Gear Case Oil Capacity	710 mL (24 fl oz)
Idle Speed (in gear)	650 ± 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 900 (6 CYL.):

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 900 (6 CYL.).

▶BOTTOM COWL AND SHIFT LINKAGE (53 parts)

Ref	OEM Part #	Part Name
1	2115-3807	COWL, BOTTOM
2	37415A1	TRIM MOULDING ASSEMBLY, BOTTOM COWL
3	38046	SPLICER, TRIM MOULDING - REAR
4	10-29226	SCREW, DECORATIVE -MOULDING TO BOTTOM COWL
5	12-24671	WASHER, FIBER - MOULDING FASTENING SCREW
6	11-29225	NUT, NYLON CAP - MOULDING FASTENING SCREW
7	13-26995	LOCKWASHER, MOULDING FASTENING SCREW
8	11-26419	NUT, BRASS - MOULDING FASTENING SCREW
9	37920A1	COVER PLATE ASSEMBLY, BOTTOM COWL
10	37940	PAD, SOUND - COVER PLATE
11	10-8M0113176	SCREW< COVER PLATE TO BOTTOM COWL
12	37638	BOOT, CONTROL CABLES - BOTTOM COWL
13	23760	BAFFLE, BOTTOM COWL
14	10-21106	SCREW< BAFFLE TO BOTTOM COWL
15	37637	BOOT, FUEL CONNECTOR - BOTTOM COWL
16	37445	SUPPORT, WIRING HARNESS - BOTTOM COWL
17	10-37561	SCREW, WIRING HARNESS SUPPORT TO BOTTOM COWL
18	11-8M0207775	NUT, WIRIING HARNESS SUPPORT SCREW
19	32-8M0108355	HOSE, TELL TALE - EXHAUST COVER TO BOTTOM COWL (16")
20	22-291112	CONNECTOR, TELL TALE HOSE TO BOTTOM COW
21	22-996642	ELBOW, TELL TALE HOSE TO EXHAUST COVER
22	54-22976	CLAMP, TELL TALE HOSE TO CONNECTOR AND ELBOW
23	27-47257	GASKET, POWERHEAD TO EXHAUST EXTENSION PLATE
24	56306A2	PLATE ASSEMBLY, EXHAUST EXTENSION
25	12-36446	WASHER, NYLON - WATER INLET TUBE
26	26-36557	SEAL, RUBBER - WATER INLET TUBE
27	38448	RETAINER, WATER TUBE SEAL Comment: SERIAL 01808129-09999999
28	10-69069	SCREW, RETAINER TO EXHAUST EXTENSION PLATE (3/4") Comment: SERIAL 01808129-09999999
29	10-56500	SCREW, EXCHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING Comment: SERIAL 01808129-09999999
30	11-8M0207775	NUT, EXHAUST EXTENSION PLATE SCREW Comment: SERIAL 01808129-09999999
31	27-38471	GASKET, EEXHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING
32	37918	SEAL, EXHAUST EXTENSION PLATE
33	99358	STRIP, RETAINING - EXHAUST EXTENSION PLATE SEAL
34	10-37571	SCREW, SEAL AND RETAINING STRIP TO EXHAUST EXTENSION PLATE
35	37824	BRACKET, SHIFT SHAFT HOLD DOWN
36	10-8M0113176	SCREW, HOLD DOWN BRACKET TO EXHAUST EXTENSION PLATE
37	49904A2	SHIFT SHAFT ASSEMBLY, UPPER
38	46069A1	LINK ROD, SHIFT
39	13-29720	WASHER, WAVE - LINK ROD
40	18-25191	COTTER PIN, LINK ROD TO SHIFT SHAFT
41	52732A6	BRACKET, ANCHOR - CONTROL CABLES
42	38802	CAP, BRASS BARREL OF THROTTLE CABLE (STARTED WITH SERIAL 185
43	10-35386	SCREW, ANCHOR BRACKETE TO CYLINDER BLOCK (1")
44	24-20099	SPRING, LINK ROD TO GUIDE BLOCK
45	37896	GUIDE BLOCK, LINK ROD
46	12-37905	WASHER, NYLON - LINK ROD
47	8M0036768	LATCH, CONTROL CABLE FASTENING - ANCHOR BRACKET
48	12-69056	WASHER, PLAIN - LINK ROD
49	11-8267089	NUT, LINK ROD
50	49932A1	LEVER, CONTROL CABLE LOCKING - ANCHOR BRACKET
51	24-37911	SPRING, CONTROL CABLE LOCKING LEVER
52	17-239281	PIN, ROLL - CONTROL CABLE LOCKING LEVER
53	24-38472	SPRING, CONTROL CABLE TENSION - ANCHOR BRACKET

▶CARBURETOR ASSEMBLY (37 parts)

Ref	OEM Part #	Part Name
--	1395-92621	REPAIR PARTS KIT (1 PER CARBURETOR)
1	1335-2475	CARBURETOR ASSEMBLY, COMPLETE (KC-6A)
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 NEEDLE, 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	1399-4791A1	COVER, STRAINER
16	27-25848	GASKET, STRAIINER COVER SCREW
17	10-25822	SCREW, STRAINER COVER FASTENING
18	1395-6027	SCREW, THROTTLE STOP LEVER
19	8146791	LEVER, THROTTLE STOP (SEE NOTE BELOW)
20	1399-2012	SHAFT, THROTTLE
21	1399-2555	TUBE, IDLE
22	27-23180	GASKET, IDLE TUBE
23	10-23035	SCREW AND LOCKWASHER, THROTTLE SHUTTER
24	1399-2014	SHUTTER, THROTTLE
25	24-27160	SPRING, IDLE ADJUSTMENT SCREW
26	1399-1713	SCREW, IDLE ADJUSTMENT
27	10-28405	SCREW, PLUG - MAIN FUEL JET CHANNEL
28	27-28406	GASKET, JET CHANNEL PLUG SCREW
29	1399-1765	JET, MAIN FUEL (.045)
30	27-28409	GASKET, MAIN FUEL JET
31	1399-2535	NOZZLE, MAIN
32	10-28846	SCREW, PLUG - MAIN NOZZLE
33	24-20869	SPRING, THROTTLE SHAFT RETURN (UPPER CARBURETOR)
34	19-32299	WELCH PLUG, BODY CHANNEL
35	27-31402	GASKET, CARBURETOR FLANGE
36	11-29250	NUT, CARBURETOR MOUNTING STUD

▶CARBURETOR LINKAGE AND CHOKE SOLENOID (32 parts)

Ref	OEM Part #	Part Name
1	37585	CHOKE SOLENOID
2	30050	TERMINAL, CHOKE SOLENOID LEAD
3	10-25299	SCREW, CHOKE SOLENOID
4	13-8M0204647	LOCKWASHER, CHOKE SOLENOID SCREW
5	54-33361	CLIP, CHOKE SOLENOID WIRE
6	90242A1	KNOB, CHOKE ROD
7	25-20116	GROFMMET, CHOKE ROD
8	37591	"U" LINK, CHOKE KNOB TO CHOKE ROD
9	10-69022	SCREW< "U" LLINK TO CHOKE KNOB
10	13-26996	LOCKWASHER, "U" LINK SCREW
11	48315A4	PLUNGER AND LINK ASSEMBLY, CHOKE SOLENOID
12	12-30164	WASHER, PLUNGER AND LINK
13	18-26953	COTTER PIN, LINK TO UPPER CHOKE LEVER
14	27977	CLUSTER, THROTTLE ELVER (UPPER CARBURETOR)
15	1395-6027	SCREW, CLUSTER TO THROTTLE LEVER
16	1335-2475	CARBURETOR ASSEMBLY, COMPLETE
17	53649A2	THROTTLE PICK-UP BRACKET ASSEMBLY
18	10-29239	SCREW, THROTTLE BRACKET MOUNTING
19	26977	BRACKET, COIL LEAD RETAINIER
20	10-98253	SCREEW< RETAINER BRACKET TO CENTER CARBURETOR
21	13-21272	LOCKWASHER, BRACKET FASTENING SCREW
22	37738	ROD, CHOKE
23	17-25391	RIVET, CHOKE SHUTTER TO CHOKE ROD
24	23-30438	BUSHING, NYLON - UPPER CHOKE SHUTTER
25	47804	SHUTTER, CHOKE - CARBURETOR
26	16-30172	STUD, CARBURETOR - CHOKE SHUTTER PIVOT
27	12-30164	WASHER, CHOKE SHUTTER CARBURETOR STUD
28	11-20110	NUT, CHOKE SHUTTER TO CARBURERTOR STUD
29	24-37678	SPRING, CHOKE ROD TENSION
30	10-657461	STUD< CHOKE ROD SPRING TO CARBURETOR
31	23-32427	SPACER, CHOKE ROD SPRING STUD
32	11-8M0207775	NUT, CHOKE ROD SPRING TO CARBURETOR STUD

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (56 parts)

Ref	OEM Part #	Part Name
1	1440-3296A1	CLAMP BRACKET ASSSEMBLY
2	28403A3	THUMB SCREW ASEMBLY
3	12-28404	WASHER, THUMB SCREW
4	8M0041936	TUBE, TILE - CLAMP BRACKET TO SWIVEL BRACKET
5	12-52864	SHIM, CLAMP BRACKET TILT TUBE
6	11-858869	NUT, TILT TUBE FASTENING
7	53078	CAP, PLASTIC - TILT TUBE
8	23-59624	SPACER, CLAMP BRACKET STUD
9	16-59625	STUD, CLAMP BRACKET
10	13-8M0204647	LOCKWAHSER, CLAMP BRACKET STUD
11	11-22053	NUT, CLAMP BRACKET STUD
12	17-8M0026068	TILT LOCK PIN SASEMBLY
13	32-28052	SLEEVE< RUBBER - TILT LOCK PIN BUMPER
14	1490-7256A2	SWIVEL BRACKET ASSEMBLY
15	26-37448	OIL SEAL
16	24-94891	SPRING, COIL - SWIVEL BRACKET
17	17-38311	PIN, COIL SPRING MOUNTING
18	22-69059	FITTING, GREASE
19	19-77633Q	LUBRICAP, SWIVEL BRACKET GREASE FITTING
20	30126A1	TILT STOP LEVER ASSEMBLY
21	10-30128	SCREW, TILT STOP LEVER ANCHOR
22	13-31030	WASHER, WAVE - LEVER ANCHOR SCREW
23	11-29250	NUT, LEVER ANCHOR SCREW
24	17-49841A1	SWIVEL PIN AND STEERING ARM ASSEMBLY
25	28203	BUMPER, STEERING ARM
26	10-49554	BOLT, STEERING ARM TO UPPER MOUNT
27	11-8M0204653	NUT, STEERING ARM BOLT FASTENING
28	10-31830	SCREW, RIDE-GUIDE ATTACHING
29	11-8M0204726	NUT, RIDE-GUIDE ATTACHING SCREW
30	12-37429	WASHER, SWIVEL PIN - LOWE
31	73984T	YOKE, BOTTOM
32	11-37424	NUT, SWIVEL PIN RETEAINING
33	28205T	STRAP STOP, DRIVE SHAFT HOUSING TO SWIVEL BRACKET
34	10-28200	SCREW< STRAP STOP TO DRIVE SHAFT HOUSING
35	11-25269	NUT, STRAP STOP FASTENING SCREW
36	23-28688	SPACER, RUBBER - COIL SPRING POSITIONING
37	55-28416	PIN, UPPER SHOCK MOUNTING
38	10-68298	BOLT, CLAMP BRACKET TO BOAT TRANSOM
39	12-68410	WASHER, CLAMP BRACKET BOLT
40	11-82670912	NUT, CLAMP BRACKET BOLT
41	38-56267	SERIAL PLATE
42	10-25612	SCREW< DRIVE- SERIAL PLATE TOS WIVEL BRACKET
43	17-25598	PIN, REVERSE LOCK SPRING ATTACHING
44	24-29821	SPRING, REVERSE LOCK TENSION
45	26903A4	REVERSE LOCK ASSEMBLY
46	56349	SHAFT, REVERSE LOCK PIVOT
47	18-45882	COTTER PIN, REVERSE LOCK TO SHAFT
48	55-696531	PIN, LOWER SHOCK MOUNTING
49	23-28199	SPACER, UPPER SHOCK BUSHING TO CLAMP BRACKET
50	12-28196	WASHER, UPPER BUSHING RETAINER (INNER)
51	12-8M0204695	WASHER, LOWER BUSHING RETAINER (INNER)
52	55-58780A7	SHOCK ABSORBER
53	23-32171	BUSHING, RUBBER - SHOCK ABSORBER (UPPER)
54	23-28198	BUSHING, RUBB ER - SHOCK ABSORBER (LOWER)
55	12-8M0204648	WASHER, UPPER AND LOWER BUSHING RETAINER (OUTER)
56	10-28450	SCREW, NYLOCK - UPPER AND LOWER SHOCK MOUNTING PIN

▶COWLING AND FRONT COVER (23 parts)

Ref	OEM Part #	Part Name
--	92-271091	ADHESIVE COMPOUND, EMBLEM FASTENING
1	2113-2663A7	COWL FRONT COVER ASSEMBLY
2	37-37854	DECAL, FRONT COVER - "MERC 900"
3	37-37853	DECAL, FRONT COVER EMBLEM
4	37-64413	EMBLEM, FRONT COVER
5	56849	KNOB, COWL FRONT COVER FASTENING
6	12-30771	WASHER, COVER FASTENING KNOB (RUBBER)
7	12-26825	WASHER, COVER FASTENING KNOB (STEEL)
8	24-30772	SPRING, TENSION - FASTENING KNOB
9	17-29077	ROLL PIN, TENSION SPRING TO KNOB
10	31089	STRIP, SOUND ABSORBING
11	38675	BLANKET, SOUND ABSORBING
12	35769	SEAL, SOUND ABSORBING - UPPER
13	2120-3612A3	WRAP AROUND COWL ASSEMBLY
14	46785A1	HANDLE, COWL LATCH
15	46785A1	SWIVEL, COWL LATCH
16	30413	HOOK, COWL LATCH FASTENING
17	17-21057	PIN, HINGE - COWL LATCH HANDLE
18	53-21058	"E" RING, HANDLE TO HINGE PIN
19	30021	BLANKET, SOUND ABSORBING
20	37-37856	DECAL, WRAP AROUND COWL - PORT
21	37-37855	DECAL, WRAP AROUND COWL - STARBOARD
22	37-37865	DECAL, WRAP AROUND COWL - REAR

▶CRANKSHAFT, PISTONS AND CONNECTING RODS (28 parts)

Ref	OEM Part #	Part Name
--	39-33945A12	RING, PISTON (.015 OVERSIZE) - 5/64" THICK
1	420-3351A3	CRANKSHAFT
2	28-45554	KEY, FLYWHEEL DRIVE
3	531-1884A3	CENTER MAIN BEARING ASSEMBLY
4	17-20032	DOWEL PIN, CENTER MAIN BEARING
5	29-714221	BEARING, NEEDLE - OUTER RACE
6	26113T	RACE, OUTER (PAIR)
7	53-26933	RING, SNAP - OUTER RACE
8	17-31245	DOWEL PIN, STEPPED
9	10-22968	SCRREW, CENTER MAIN BEARING CLAMPING
10	11-8M0207775	NUT, BEARING CLAMPING SCREW
11	533-2761A3	MAIN BEARING ASSEMBLY, VALVE TYPE
12	17-20032	DOWEL PIN, MAIN BEARING
13	10-25313	SCREW, MAIN BEARING CLAMPING
14	11-29469	NUT, MAIN BEARING CLAMPING SCREW
15	34-88498A1	REED SET, MATCHED - MAIN BEARING
16	34-20053	REED STOP, MAIN BEARING REED VALVES
17	10-77280	SCREW, REED STOP MOUNTING
18	11-29469	NUT, REED STOP MOUNTING SCREW
19	732-2735A2	PISTON AND PISTON PIN ASSEMBLY
20	40-32118	LOCK RING, PISTON PIN
21	39-32921A12	RING, PISTON (5/64" THICK)
22	531-1884A3	CONNECTING ROD AND CAP ASSEMBLY Comment: SERIAL 00000000-01850448
23	10-45379	SCREW, CONNECTING ROD Comment: SERIAL 01850449-09999999
24	11-20061	NUT, CONNECTING ROD SCREW Comment: SERIAL 01850449-09999999
25	29-47897	BEARING, NEEDLE - CRANKPIN Comment: SERIAL 01850449-09999999
26	29-39656	BEARING, NEEDLE - PISTON PIN Comment: SERIAL 01850449-09999999
27	12-29681	WASHER, NEEDLE LOCATING Comment: SERIAL 01850449-09999999

▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (64 parts)

Ref	OEM Part #	Part Name
1	1128-1890A1	END CAP ASSEMBLY, UPPER
2	26-41953	OIL SEAL
3	25-31305	"O" RING
4	30-62567T	BEARING, BALL
5	15-31283A1	SHIM, END CAP TO CRANKCASE
6	10-30225	SCREW, END CAP MOUNTING
7	836-2486A3	CYLINDER BLOCK AND CRANKCASE ASSEMBLY
8	22-328022	PLUG, PIPE - WATER PRESSURE HOLD
9	16-64936	STUD, CARBURETOR MOUNTING
10	16-64281	STUD, CRANKCASE TO DRIVE SHAFT HOUSING (1 7/8")
11	17-43044	PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK
12	17-20032	PIN, DOWEL - CYLINDER BLOCK TO MIAN BEARING
13	16-26134	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (4 1/16")
14	16-376531	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2 11/16")
15	16-26135	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2 5/16"0
16	10-26132	SCREW< CRANKCASE TO CYLINDER BLOCK (2 1/2")
17	10-78841	SCREW< CRANKCASE TO CYLINDER BLOCK (1 1/2")
18	11-29250	NUT, CRANKCASE FASTENING SCREW
19	53-78201	BRACKET, CLAMP EXTENSION
20	10-36351	SCREW, MAIN BEARING LOCKING
21	10-20359	SCREW< CENTER MAIN BEARING LOCKING
22	14-20091	TAB WASHER, BEARING LOCKING SCREW
23	1126-1751A1	END CAP ASSEMBLY, LOWER
24	21-28481A1	CHECK VALVE ASSEMBLY, END CAP
25	26-41953	OIL SEAL, LOWER
26	26-29478	OIL SEAL, UPPER
27	25-20081	"O" RING
28	30-63742T	BEARING, BALL
29	15-20085A1	SHIM, END CAP TO CRANKCASE
30	10-30225	SCREW, END CAP MOUNTING
31	27-37740	GASKET, CYLINDER BLOCK TO BAFFLET PLATE
32	47660	PLATE, BAFFLE - EXHAUST MANIFOLD
33	27-37741	GASKET, BAFFLE PLATE TO EXHAUST MANIFOLD COVER
34	37674	COVER, EXHAUST MANIFOLD
35	10-38837	SCREW, MANIFOLD COVER MOUNTING
36	13-21804	LOCKWASHER, SPARK PLUG LEADS CLAMP SCREW
37	54-37810	CLAMP, SPARK PLUG LEADS TO COVER
38	32-8M0108355	TUBE, BALANCE - MAIN BEARING
39	22-20781	ELBOW, BALANCE TUBE TO MIAN BEARING SCREW
40	22-8585531	TEE, BALANCE TUBE TO MAIN BEARING SCREW
41	54-20386	CLAMP, BALANCE TUBE TO ELBOW AND TEE
42	58124A1	SWITCH, MERCURY
43	10-28708	SCREW, MERCURY SWITCH TO EXHAUST MANIFOLD COVER
44	22-67902	CONNECTOR, CYLINDER BLEED HOSE - LOWER AND CENTER
45	32-9912688	HOSE, UPPER AND LOWER CYLINDER BLEED
46	22-25956	TEE, CHECK VALVE AND ADAPTOR
47	22-28586A1	ADAPTOR AND CHECK VALVE ASSEMBLY
48	21-28481A1	CHECK VALVE ASSEMBLY
49	22-62365A1	CHECK VALVE ASSEMBLY, UPPER - BLEED HOSE
50	54-20387	CLAMP, BLEED HOSE TO CONNECTOR
51	27-31798	GASKET, CYLINDER BLOCK COVER
52	1011-2484	COVER, CYLINDER BLOCK
53	10-20653	SCREW, CYLINDER BLOCK COVER MOUNTING (1") Comment: NOTE: ON LATER ENGINE PRODUCTION, 15 OF 10-20653 SCREWS (1") AND 1 OF 10-22421 SCREW (1 1/4") ARE USED. EARLIER ENGINE'S USED SCREWS AS STILL LISTED IN THE QUANTITY COLUMN.
54	10-56500	SCREW, CYLINDER BLOCK COVER MOUNTING (1 1/4") Comment: NOTE: ON LATER ENGINE PRODUCTION, 15 OF 10-20653 SCREWS (1") AND 1 OF 10-22421 SCREW (1 1/4") ARE USED. EARLIER ENGINE'S USED SCREWS AS STILL LISTED IN THE QUANTITY COLUMN.
55	12-26907	WASHER, CYLINDER BLOCK COVER SCREW
56	10-21091	SCREW, CYLINDER BLOCK COVER MOUNTING (1 1/8") Comment: NOTE: ON LATER ENGINE PRODUCTION, 15 OF 10-20653 SCREWS (1") AND 1 OF 10-22421 SCREW (1 1/4") ARE USED. EARLIER ENGINE'S USED SCREWS AS STILL LISTED IN THE QUANTITY COLUMN.
57	11-8M0207775	NUT, COVER MOUNTING SCREW
58	32-8M0108355	TUBE, RUBBER SPACER - LOWER PORT NUT
59	37440	BRACKET, MOUNT SUPPORT - CYLINDER BLOCK
60	10-35386	SCREW, BRACKET TO CYLINDER BLOCK (1")
61	27-31304	GASKET, TRANSFER PORT COVER
62	31288	COVER, TRANSFER PORT
63	10-28635	SCREW, TRANSFER PORT COVER MOUNTING (5/8")
64	13-26992	LOCKWASHER, TRANSFER PORT COVER AND BALLAST MOUNTING SCREW

▶DISTRIBUTOR ADAPTOR AND PILOT ASSEMBLY (36 parts)

Ref	OEM Part #	Part Name
1	53-26406	RING, SNAP - BALL BEARING RETAINING
2	30-26379	BEARING, BALL - DRIVE SHAFT
3	45-30573	DRIVE SHAFT, DISTRIBUTOR
4	45960A1	PILOT ASSEMBLY, DISTRIBUTOR
5	30-20066	BEARING, BALL - DISTRIBUTOR PILOT
6	24-29275	SPRING, HORSESHOE
7	17-27962	PIN, SPRING TERMINAL
8	32197	STOP, SPRING TERMINAL PIN
9	55804A1	ECONOMIZER COLLAR AND PIN ASSEMBLY
10	17-27961	PIN, SPRIGN RETAINER
11	22-25094	FITTING, GREASE - ECONOMIZER COLLAR
12	32044A1	THROTTLE ACTUATOR ASSEMBLY
13	23-26602	BUSHING, NYLON - THROTTLE ACTUATOR
14	10-69022	SCREW, THROTTLE ACTUATOR TO SECTOR GEAR
15	13-26996	LOCKWASHER, THROTTLE ACTUATOR FASTENING SCREW
16	12-847883	WASHER, THROTTLE ACTUATOR FASTENING SCREW
17	30645	ADAPTOR, DISTRIBUTOR
18	22-25094	FITTING, GREASE - ADAPTOR
19	10-78841	SCREW< ADAPTOR AND PILOT TO CRANKCASE FLANGE
20	12-20084	WASHER, ADAPTOR AND PILOT FASTENING SCREW
21	11-22053	NUT, ADAPTOR AND PILOT FASTENING SCREW
22	12-27939	WASHER, THRUST - DISTRIBUTOR PILOT
23	14-27960	TAB WASHER, CAP LOCKING
24	13-27959	WASHER, WAVE - TAB WASHER TENSION
25	27955	CAP, ADAPTOR AND PILOT FASTENING
26	10-28668	SCREW, ADAPTOR AND PILOT TO DISTRIBUTOR
27	13-26992	LOCKWASHER, ADAPTOR AND PILOT TO DISTRIBUTOR SCREW
28	23-29909	SPACER, DRIVEN PULLEY
29	29906A1	DRIVEN PULLEY ASSEMBLY
30	17-29908	PIN, DRIVEN PULLEY
31	29907	FLANGE, DRIVEN PULLEY
32	28-29910	KEY, MAGNETO DRIVING
33	10-41506	SCREW, PULLEY CLAMPING
34	13-26996	LOCKWASHER, PULLEY CLAMPING SCREW
35	20140	BELT, TIMING
36	30109	GROUND STRAP ASSEMBLY, ADAPTOR TO CRANKCASE

▶DISTRIBUTOR ASSEMBLY, COMPLETE (46 parts)

Ref	OEM Part #	Part Name
-	393-1282A17	DISTRIBUTOR ASSEMBLY, COMPLETE
1	393-1282	HOUSING, PRIMARY
2	22-25885A1	ELBOW ASSEMBLY, VENT HOSE- PRIMARY HOUSING
3	393-1504A11	BREAKER ASSEMBLY, COMPLETE
4	16-29230	STUD, PRIMARY LEAD AND TENSION SPRING
5	11-29236	NUT, PRIMARY LEAD FASTENING
6	393-1586	GROMMET, PLASTIC - BREAKER ASSEMBLY
7	53-21058	"E" RING, BREAKER TO PIVOT PIN
8	393-1287A2	CAM WICK AND HOLDER ASSEMBLY
9	10-20597	SCREW, BREAKER HOLDER TO HOUSING
10	393-1656	WIRE, PRIMERY GROUND
11	393-1283A1	CONDENSER
12	38700	SNUBBER, CAPACITOR
13	10-29434	SCREW, CONDENSER TO HOUSING
14	30-26379	BEARING, BALL - CAM SHAFT
15	17-25319	PIN, ROLL - CAM SHAFT
16	393-1779A2	SHAFT ASSEMBLY - DISTRIBUTOR CAM
17	25-26543	"O"RING, CAM SHAFT
18	23-28933	BUSHING, DISTRIBUTOR CAM SHAFT
19	13-26917	WASHER, WAVE - BALL BEARING TENSION
20	27-26412	GASKET, HOUSING TO ADAPTOR
21	393-1278	ADAPTOR, HOUSING TO DISTRIBUTOR CAP
22	10-32651	SCREW, ADAPTOR TO HOUSING
23	393-1280A1	ROTOR, DISTRIBUTOR
24	27-36268	GASKET, DISTRIBUTOR CAP TO ADAPTOR
25	393-1927A9	DISTRIBUTOR CAP ASSEMBLY
26	393-1293A1	>BRUSH AND SPRING ASSEMBLY
27	22-31521	ELBOW, VENT HOSE - DISTRIBUTOR CAP
28	F1277	SIDE INLET ASSEMBLY
29	393-1292A1	BRUSH AND SPRING ASSEMBLY
30	27-26447	GASKET, SIDE INLET TO DISTRIBUTOR CAP
31	10-29167	SCREW, SIDE INLET TO DISTRIBUTOR CAP
32	10-29158	SCREW, DISTRIBUTOR CAP TO ADAPTOR TO HOUSING
33	12-89302	WASHER, DISTRIBUTOR CAP FASTENING SCREW
34	11-21806	NUT, DISTRIBUTOR CAP FASTENING SCREW
35	84-821945A37	HIGH TENSION CABLE ASSEMBLY (COIL 2)
36	84-821945A27	HIGH TENSION CABLE ASSEMBLY (COIL 1)
37	85-94589	SLEEVE, TERMINAL END COVER
38	8M0084600	CONNECTOR, SPARK PLUG LEAD
39	25-26547	GROMMET, HIGH TENSION CABLE
40	84-813715A1	SPARK PLUG LEAD ASSEMBLY (3, 4 AND 5) Comment: ORDER A-36549A1 KIT FOR REPLACEMENT OF LEAD WIRE MARKERS
41	84-813715A1	SPARK PLUG LEAD ASSEMBLY (2 AND 6) Comment: ORDER A-36549A1 KIT FOR REPLACEMENT OF LEAD WIRE MARKERS
42	84-813715A1	SPARK PLUG LEAD ASSEMBLY (1) Comment: ORDER A-36549A1 KIT FOR REPLACEMENT OF LEAD WIRE MARKERS
43	32-30574	SLEEVE, SPARK PLUG LEAD
44	32-46768	SLEEVE, SPARK PLUG LEAD (5 1/8")
45	85-63709A1	PROTECTOR, SPARK PLUG LEAD

▶DISTRIBUTOR VERTICAL LINKAGE AND IGNITION COILS (51 parts)

Ref	OEM Part #	Part Name
1	55805	BRACKET, STOP
2	10-28636	SCREW, STOP BRACKET TO DISTRIBUTOR ADAPTOR
3	12-20533	WASHER, STOP BRACKET FASTENING SCREW
4	37747	GROUND STRAP, STOP BRACKET TO FRONT SUPPORT BRACKET
5	10-24228	SCREW, STOP BRACKET ADJUSTING
6	11-20890	NUT, STOP BRACKET ADJUSTING SCREW
7	26852	CAP, NYLON - ADJUSTING SCREW
8	27947	SWIVEL, LINKAGE - ECONOMIZER COLLAR
9	25996A1	SWIVEL AND LINK ROD ASSEMBLY
10	11-25168	NUT, UPPER LINK ROD ADJUSTING
11	37931	ROD, LINK - UPPER
12	27947	SWIVEL, UPPER LINK ROD TO THROTTLE CONTROL LEVER Comment: SERIAL 00000000-01852148
12A	27948	SWIVEL, UPPER LINK ROD TO THROTTLE CONTROL LEVER Comment: SERIAL 01852149-09999999
13	48856	LEVER, THROTTLE CONTROL Comment: SERIAL 00000000-01852148
13A	48856	LEVER, THROTTLE CONTROL Comment: SERIAL 01852149-09999999
14	10-31830	SCREW, THROTTLE LEVER TO EXHAUST MANIFOLD COVER (1 3/4") Comment: SERIAL 01852149-09999999
15	12-8M0042641	WASHER, THROTTLE CONTROL LEVER SCREW Comment: SERIAL 01852149-09999999
16	23-37643	BUSHING, NYLON - THROTTLE CONTROL LEVER SCREW Comment: SERIAL 00000000-01852148
16A	12-8M0204649	WASHER, THROTTLE CONTROL LEVER SWIVEL Comment: SERIAL 01852149-09999999
16B	13-25806	WASHER, WAVE -THROTTLE CONTROL LEVER SWIVEL Comment: SERIAL 01852149-09999999
17	23-29529	BUSHING, STEEL - THROTTLE CONTROL ELVER SCREW Comment: SERIAL 00000000-01852148
17A	23-38994	BUSHING, STEEL - THROTTLE CONTROL LEVER Comment: SERIAL 01852149-09999999
18	13-37642	WASHER, WAVE - THROTTLE CONTROL LEVER SCREW Comment: SERIAL 00000000-01852148
18A	11-8267089	NUT, UPPER LINK ROD SWIVEL TO THROTTLE CONTROL Comment: SERIAL 01852149-09999999
19	11-8M0204726	NUT, THROTTLE CONTROL LEVER SCREW Comment: SERIAL 01852149-09999999
20	37587	SWIVEL, LOWER - THROTTLE COTNROL LEVER TO THROTTLE CABLE
21	11-8267089	NUT, THROTTLE CABLE TO LOWER SWIVEL
22	393-1282A17	DISTRIBUTOR ASSEMBLY, COMPLETE
23	54-22875	CLIP, DISTRIBUTOR PRIMARY GROUND LEAD
24	10-62568	SCREW< DISTRIBUTOR PRIMARY GROUND LEAD CLIP FASTENING
25	8M0084613	"D" WASHER, DISTRIBUTOR PRIMARY GROUND LEAD CLIP SCREW
26	54-52905	CLAMP, HIGH TENSION LEADS TO CYLINDER BLOCK COVER
27	33-31390	SPARK PLUG (AC - K421)
28	54-37811	CLAMP, HIGH TENSION LEAD TO MANIFOLD COVER
29	898253T24	COIL, IGNITION
30	25-26543	"O" RING, IGNITION COIL
31	13-20554	LOCKWASHER, IGNITION COIL TERMINALS
32	13-26996	LOCKWASHER, IGNITION COIL TERMINALS
33	11-68219	NUT, IGNITION COIL TERMINALS
34	26514	BRACKET, COIL FASTENING
35	32229	CLAMP, COIL BRACKET
36	10-26889	SCREW< COIL CLAMP TO BRACKET
37	11-8M0207775	NUT, COIL CLAMP SCREW
38	10-74824	SCREW, COIL BRACKET TO BOTTOM COWL (1 1/4") - SIDE
39	13-8M0204647	LOCKWASHER, COIL BRACKET SCREW
40	10-21937	SCREW, COIL BRACKET TO BOTTOM COWL (2")
41	10-37742	SCREW, COIL BRACKET TO BOTTOM COWL (1 3/4") - TOP
42	11-8M0207775	NUT, COIL BRACKET SCREW
43	32-8M0108355	HOSE, VENT - DISTRIBUTOR TO ELBOW (13")
44	32-8M0108355	HOSE, VENT - DISTRIBUTOR TO ELBOW (18 1/2")
45	22-31521	ELBOW, VENT HOSE TO BOTTOM COWL

▶DRIVE SHAFT HOUSING ASSEMBLY (50 parts)

Ref	OEM Part #	Part Name
1	1552-3911A3	DRIVE SHAFT HOUSING ASSEMBLY
2	16-56295	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING
3	37461	ROD, PUSH - REVERSE LOCK
4	12-20546	WASHER< PUSH ROD
5	18-25191	COTTER PIN, PUSH ROD TO REVERSE LOCK
6	24-37444	SPRING, TENSION - PUSH ROD
7	19-32298	PLUG, PLASTIC - TRIM TAB SCREW HOLE
8	37417	COVER, TRIM - DRIVE SHAFT HOUSING
9	37-37858	DECAL, TRIM COVER - PORT
10	37-37857	DECAL, TRIM COVER - STARBOARD
11	10-37571	SCREW, TRIM COVER TO BOTTOM COWL
12	37919	SEAL, TRIM COVER TO DRIVE SHAFT HOUSING
13	37665	STRIP, RETAINING - TRIM COVER SEAL (SIDE)
14	38052	STRIP, RETAINING - TRIM COVER SEAL (REAR)
15	10-38055	SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (5/8")
16	10-37571	SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (1/2")
17	12-30164	WASHER, RETAINING STRIP SCREW
18	32-37446	TUBE, WATER INLET
19	23-29591	SLEEVE, RUBBER - W ATER INLET TUBE
20	38469	TUBE, EXHAUST
21	10-38601	SCREW, EXHAUST TUBE TO EXHAUST EXTENSION PLATE Comment: SERIAL 01808129-09999999
22	11-35888	NUT, EXHAUST TUBE SCREW Comment: SERIAL 01808129-09999999
23	11-23161	NUT, POWERHEAD STUDS
24	11-8M0204726	NUT, POWERHEAD STUDS
25	12-20086	WASHER, POWERHEAD STUDS
26	27-38471	GASKET, EXHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING
27	75296	MOUNT, RUBBER - UPPER
28	31260	COVER, UPPER MOUNT - OUTSIDE HALF
29	37712	COVER, UPPER MOUNT - INSIDE HALF
30	24929	PACKING, "U" CUP
31	10-20012	SCREW, UPPER MOUNT COVER (1 5/8")
32	10-28775	SCREW< UPPER MOUNT COVER (2 1/8")
33	12-8M0204649	WASHER, UPPER MOUNT COVER SCREW
34	11-35888	NUT, UPPER MOUNT COVER SCREW
35	12-31262	WASHER, UPPER MOUNT BOLT
36	12-31261	WASHER, RUBBER - UPPER MOUNT BOLT
37	12-31263	WASHER, UPPER MOUNT BOLT
38	11-8M0204653	NUT, UPPER MOUNT BOLT
39	37399	MOUNT, RUBBER - LOWER
40	10-75284	SCREEW< UPPER MOUNT (5 1/2")
41	11-25096	NUT, MOUNT SCREW
42	25067	BUMPER, RUBBER - MOUNTING SCREW
43	11-8M0204653	NUT< GEAR HOUSING AND DRIVE SHAFFT HOUSING STUDS
44	11-29489	NUT, GEAR HOUSING AND DRIVE SHAFT HOUSING STUDS
45	35608	CLAMP, LOWER MOUNT TO DRVIE SHAFT HOUSING
46	24-35522	SPRING, TENSION - LOWER MOUNT CLAMP
47	10-29256	SCREW, LOWER MOUNT CLAMP TO DRIVE SHAFT HOUSING
48	35474T	COVER, LOWER MOUNT CLAMP
49	11-35521	NUT, LOWER MOUNT CLAMP COVER
50	10-29722	SCREW, COVER TO LOWER CLAMP MOUNT

▶FLYWHEEL ASSEMBLY AND STATOR (16 parts)

Ref	OEM Part #	Part Name
1	11-8M0214915	NUT, FLYWHEEL
2	12-33001	WASHER, FLYWHEEL NUT
3	28-45554	KEY, FLYWHEEL DRIVE
4	225-2494A15	FLYWHEEL ASSEMBLY, COMPLETE
5	10-32156	SCREW, FLEXIBLE PLATE TO FLYWHEEL
6	10-32417	SCREW, PLATE AND HUB TO FLEXIBLE PLATE
7	17-26618	PIN, DOWEL - PULLEY TO FLYWHEEL
8	29788	FLANGE, FLYWHEEL PULLEY
9	30306	PULLEY, FLYWHEEL
10	29787	HUB, FLYWHEEL PULLEY
11	398-2188	STATOR, ALTERNATOR
12	30050	TERMINAL, STATOR LEAD WIRE
13	10-57021	SCREW, STATOR TO UPPER END CAP
14	54-22875	CLIP, STATOR LEAD FASTENING (7/16")
15	10-62568	SCREW, STATOR LEAD CLIP FASTENING (10)
16	8M0084613	"D" WASHER, CLIP FASTENINIG SCREW

▶FUEL PUMP AND FUEL LINE ASSEMBLY (33 parts)

Ref	OEM Part #	Part Name
1	30269A2	FUEL PUMP ASSEMBLY - UPPER
2	27-23005	GASKET, CHECK VALVE TO HOUSING
3	21-8M0082362	VALVE, CHECK - FUEL PUMP
4	23004	RETAINER, CHECK VALVE
5	10-43725	SCREW, RETAINER TO HOUSING
6	27-24863	GASKET, FUEL PUMP
7	23014	DIAPHRAGM, FUEL PUMP
8	30461A2	FUEL PUMP ASSEMBLY - LOWER
9	30275	COVER, FUEL PUMP
10	27-30276	GASKET, FUEL PUMP COVER
11	10-29878	SCREW, FUEL PUMP MOUNTING (1 1/2") - UPPER PUMP
12	10-30274	SCREW, FUEL PUMP MOUNTAIN (1 3/4") - UPPER PUMP
13	10-73013	SCREW, FUEL PUMP MOUNTING (1 1/2") - LOWER PUMP
14	10-30273	SCREW< FUEL PUMP MOUNTING (1 7/8") - LOWER PUMP
15	32-32256A1	FUEL LINE ASSEMBLY, PUMP TO CARBURETOR (9 7?8")
16	22-30174	ELBOW, UPPER CARBURETOR STRAINER COVER
17	22-30175	SLEEVE, CARBURETOR STRAINER COVER ELBOW
18	22-30177	NUT, UPPER CARBURETOR STRAINER COVER ELBOW
19	32-31552A1	FUEL LINE ASSEMBLY, PUMP TO PUMP (12 3/8")
20	32-31553A1	FUEL LINE ASSEMBLY, PUMP TO CARBURETOR (19 3/4")
21	32-30176	FUEL LINE, ADAPTOR TO LOWER FUEL PUMP
22	22-30174	ELBOW, LOWER FUEL PUMP INLET
23	22-30175	SLEEVE, FUEL PUMP INLET ELBOW
24	22-30177	NUT, FUEL PUMP INLET ELBOW
25	22-37682	ELBOW, FUEL LINE TO ADAPTOR
26	30186	ADAPTOR, CHECK UNIT (FUEL LINE)
27	30187	STEM, CHECK UNIT ADAPTOR
28	25-16524	"O" RING, ADAPTOR STEM
29	24-30189	SPRING, ADAPTOR STEM
30	30188	CUP WASHER, ADAPTOR
31	10-37561	SCREW, ADAPTOR TO BOTTOM COWL
32	11-8M0207775	NUT, ADAPTOR FASTENING SCREW
33	32-31550A1	FUEL LINE ASSEMBLY, CARBURETEOR (6")

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (54 parts)

Ref	OEM Part #	Part Name
-	1623-3912A8	GEAR HOUSING ASSEMBLY, COMPLETE (STANDARD)- SEE NOTE BELOW
1	1623-5244A14	GEAR HOUSING ASSEMBLY
2	16-57921	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (3 15/16")
3	16-8M0133358	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (1 31/32")
4	16-8M0034463	STUD, WATER PUMP BASE AND BODY TO GEAR HOUSING (3 7/16")
5	16-57919	STUD, WATER PUMP BASE AND BOTY TO GEAR HOUSING (3 5/16")
6	31-32898T	BEARING, ROLLER -DRIVE SHAFT
7	45-38459	DRIVE SHAFT (STANDARD)
8	43-31419	GEAR, PINION - DRIVE SHAFT
9	11-30932	NUT, PINION GEAR TO DRIVE SHAFT
10	15-30278A1	SHIM, WATER PUMP BASE TOG EARHOUSING
11	30-63326T	BEARING, BALL - DRIVE SHAFT
12	53-30726	RING, RETAINING - BALL BEARING
13	27-32438	GASKET, WATER PUMP BASE TO GEAR HOUSING
14	25-8M0204651	"O" RING, WATER PUMP BASE
15	46-48758A1	WATER PUMP BASE ASSEMBLY Comment: SERIAL 01852149-09999999
16	26-94038	OIL SEAL, WATER PUMP BASE
17	26-16977	OIL SEAL, WATER PUMP BASE
18	17-35973	SDOWEL PIN, WATER PUMP BASE TO WATER PUMP BODY
19	27-8M0090319	GASKET, LOWER - WATER PUMP BASE TO FACE PLATE
20	8M0204677	PLATE, FACE - WATER PUMP BASE TO WATER PUMP BODY
21	27-858524	GASKET, UPPER - FACE PLATE TO WATER PUMP BODY
22	46-96148A8	WATER PUMP BODY ASSEMBLY
23	30915	INSERT, WATER PUMP BODY
24	26-16977	OIL SEAL, WATER PUMP BODY
25	12-36446	WASHER, NYLON - WATER INLET TUBE
26	26-36557	SEAL, RUBBER - WATER INLET TUBE
27	47-89984T4	IMPELLER, WATER PUMP
28	17-8M0214994	PIN, IMPELLER DRIVE
29	10-30720	SCREW, WATER PUMP BODY TO GEAR HOUSING (1/4)
30	13-26992	LOCKWASHER, WATER PUMP BODY FASTENING SCREW AND STUDS (1/4)
31	11-29598	NUT, WATER PUMP BODY FASTENING STUDS (1/4)
32	13-8M0204647	LOCKWASHER, WATER PUMP BODY FASTENING STUD (5/16)
33	11-28770	NUT, WATER PUMP BODY FASTENING STUD (5/16)
34	25-8M0214918	RING, RUBBER - CENTRIFUGAL SLINGER (DRIVE SHAFT)
35	23-29804T	SLEEVE, GUIDE - WATER INLET TUBE
36	25-8M0214919	"O" RING, UPPER - DRIVE SHAFT
37	37641001	SEAL, EXHAUST TUBE
38	38051	PLATE, SUPPORT - EXHAUST TUBE SEAL
39	76062A1	SHAFT, SHIFT - LOWER
40	53-29641	CLIP, REETAINING -SHIFT SHAFT
41	25-25439	"O" RIING, SHFIT SHAFT BUSHING
42	23-77631A2	BUSHING ASSEMBLY, SHIFT SHAFT
43	26-892361	OIL SEAL, SHIFT SHAFT BUSHING
44	12-31266	WASHER, RUBBER - SHIFT SHAFT BUSHING
45	37422	CAM, LOWER - REVERSE LOCKING
46	37421	CAM, DRIVE- REVERSE LOCKING
47	37420	CAM, UPPER - REVERSE LOCKING
48	22-390721	PLUG, PIPE - SHIFT SHAFT GREASE FILLER HOLE
49	10-79953Q04	SCREW, GREASE FILLER AND VENT HOLE
50	12-191833	WASHER, GRESAE FILLER AND VENT HOLE SCREW
51	10-29608	SCREW, GEAR HOUSING FLUSHING HOLE
52	27-8M0214916	GASKET, GEAR HOUSING FLUSHING HOLE SCREW
53	26-8M0214917	SEAL, GEAR HOUSING FLUSHING HOLE

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (35 parts)

Ref	OEM Part #	Part Name
-	1623-3912A8	GEAR HOUSING ASSEMBLY, COMPLETE (STANDARD)-SEE NOTE BELOW
1	1623-5244A14	GEAR HOUSING ASSEMBLY (SEE PAGE 30 FOR PARTS BREAKDOWN)
54	760394	CAM, SHIFT
55	30625	FOLLWER, CAM
56	30624	SLIDE, CROSS PIN
57	24-30622	SPRING, COMPRESSION - CAM FOLLOWER
58	15-30923A1	SHIM, BEARING OUTER RACE TO GEAR HOUSING
59	43-53100A3	FORWARD GEAR ASSEMBLY
60	31-30895T	BEARING, ROLLER - FORWARD GEAR
61	31-30894A1	TAPERED ROLLER BEARING ASSEMBLY
62	31-31092	CUP, TAPERED ROLLER BEARING
63	52-822539T	RATCHET, SLIDING CLUTCH
64	17-8M0100263	PIN, CROSS - RATCHET TO PROPELLER SHAFT
65	24-30893	SPRING, RETAINING - CROSS PIN
66	44-47900A2	SHAFT, PROPELLER
67	43-31887	REVERSE GEAR ASSEMBLY
68	30-31265	BEARING, BALL - REVERSE GEAR
69	12-71143A1	WASHER, THRUST - BEARING CARRIER TO GEAR HOUSING
70	15-29955A1	SHIM, THRUST WASHER TO GEAR HOUSING
71	25-29976	"O" RING, BEARING CARRIER
72	31284T1	BEARING CARRIER ASSEMBLY
73	31-30956T	BEARING, ROLLER - BEARING CARRIER
74	26-8M0204670	OIL SEAL, BEARING CARRIER
75	28-30281	KEY, LOCATING - BEARING CARRIER
76	12-29957	WASHER, GEAR HOUSING COVER
77	52699	COVER, GEAR HOUSING
78	12-31013	WASHER, THRUST - BEARING CARRIER
79	30581A1	THRUST HUB AND WASHER ASSEMBLY
80	12-29590	WASHER, CUPPED - THRUST HUB
81	12-31211Q03	WASHER, SPLINED - PROPELLER NUT
82	14-816629Q	TAB WASHER, PROPELLER NUT
83	11-29594	NUT, PROPELLER
84	97-31640Q4	TRIM TAB, GEAR HOUSING
85	10-32470	SCREW, TRIM TAB TO GEAR HOUSING (1 3/4")
86	10-30206	SCREW, GEAR HOUSING TO DRIVE SHAFT HOUSING (1")

▶STARTER MOTOR, STARTER SOLENOID, RECTIFIER AND WIRING HARNES (55 parts)

Ref	OEM Part #	Part Name
1	37817	WIRING HARNESS, INTERNAL
2	30050	TERMINAL, HARNESS AND MERCURY SWITCH LEADS
3	26079A2	PLATE, WIRING HARNESS TO BOTTOM COWL
4	10-45893	SCREW< HARNESS PLATE FASTENING
5	24-28975	SPRING, GARTER - INTERNAL WIRING HARNESS
6	54-22783	"S" CLIP, RECTIFIER HARNESS LEAD TO BOTTOM COWL
7	32177A2	RECTIFIER ASSEMBLY
8	10-26065	SCREW, RECTIFIER TO MOUNTING BRACKET
9	11-29250	NUT, RECTIFIER MOUNTING SCREW
10	10-35400	SCREW, HARNESS GTERMINAL LEAD TO RECTIFIER
11	13-26996	LOCKWASHER, RECTIFIER STATOR LEAD TERMINALS
12	11-68219	NUT, FASTENING - RECTIFIER STATOR LEADS
13	50-45822A1	STARTER MOTOR ASSEMBLY
14	45125	PLATE, SPACER - STARTER MOTOR
15	10-22698	SCREW< STARTER MOTOR TO CRANKCASE FLANGE
16	13-8M0204647	LOCKWASHER, STARTER MOTOR FASTENING SCREW
17	38747	BRACKET, SUPPORT - STARTER MOTOR
18	13-24669	LOCKWASHER, THRU BOLT
19	11-20890	NUT, THRU BOLT - BRACKET TO STARTER MOTOR
20	84-93388A14	CABLE, WIRE - STARTER MOTOR TO SOLENOID
21	10-69035	SCREW, HARNESS GROUND LEAD TO STARTER MOTOR
22	32082	SOLENOID, STARTER
23	32278A1	GROUND STRAP ASSEMBLY, STARTER SOLENOID
24	13-8M0204647	LOCKWASHER, SOLENOID TERMINAL (5/16)
25	11-22053	NUT, SOLENOID TERMINAL (5/16)
26	13-26996	LOCKWASHER, SOLENOID TERMINAL (10)
27	11-68219	NUT, SOLENOID TERMINAL (10)
28	10-29282	SCREW, SOLENOID TO STARTER MOTOR
29	54-24836	CLIP, LEAD WIRRES TO SUPPORT BRACKET
30	10-62568	SCREW, LEAD WIRE CLIP FASTENING
31	8M0084613	"D" WASHER, CLIP FASTENING SCREW
32	54-24871	CLAMP, WIRING HARNESS TO SUPPORT BRACKET
33	10-62568	SCREW, HARNESS CLAMP FASTENING
34	8M0084613	"D" WASHER, HARNESS CLAMP
35	29714	BLOCK, TGERMINAL - UPPER FUEL PUMP PAD
36	10-22245	SCREW, TGERMINAL BLOCK FASTENING
37	13-26996	LOCKWASHER, TERMINAL BLOCK FASTENING SCREW
38	12-26014	WASHER, TERMINAL BLOCK FSATENING SCREW
39	82-72878A1	BALLAST, IGNITION COIL
40	10-28666	SCREW, BALLAST AND PORT COVER MOUNTING (1")
41	13-26992	LOCKWASHER, BALLAST AND PORT COVER MOUNTING SCREW
42	12-69057	WASHER, BALLAST AND PORT COVER MOUNTING SCREW
43	29112	JUMPER, BALLAST TO BALLAST AND BALLAST TO BLOCK
44	13-26995	LOCKWASHER, BALLAST JUMPER LEAD TERMINALS
45	11-21923T	NUT, BALLAST JUMPER LEADS FASTENING
46	10-35400	SCRFEW, HARNESS AND JUMPER LEADS TO TERMINAL BLOCK
47	54-24836	CLIP, WIRING HARNESS TO CRANKCASE FLANGE
48	10-8M0113176	SCREW, HARNESS CLIP FASTENING
49	8M0084613	"D" WASHER, HARNESS CLIP
50	30212	BLOCK, TERMINAL - EXHAUST COVER
51	10-62568	SCREW, HARNESS LEADS TO TERMINAL BLOCK
52	10-72169	SCREW, TERMINAL BLOCK TO EXHAUST MANIFOLD COVER
53	10-32471	SCREW, SOLENOID MOUNTING HOLES IN STARTER MOTOR
54	13-26992	LOCKWASHER, STARTER MOTOR TERMINAL
55	11-20890	NUT, STARTER MOTOR TERMINAL

▶TOP COWL AND SUPPORT BRACKETS (50 parts)

Ref	OEM Part #	Part Name
1	37408	HANDLE, CHROME - TOP COWL
2	12-20533	WASHER, CHROME HANDLE TO INSIDE HANDLE STUD
3	12-69056	WASHER, CHROME HANDLE TO INSIDE HANDLE STUD (FRONT)
4	11-826709109	NUT, CHROME HANDLE TO INSIDE HANDLE STUD
5	35496	PAD, BUMPER - TOP COWL HANDLE
6	37434	HANDLE, INSIDE - TOP COWL
7	10-35386	SCREW, HANDLE TO TOP COWL (1")
8	13-8M0204647	LOCKWASHER, HANDLE TO TOP COWL SCREW
9	2114-3806A1	COWL, TOP
10	37-37953	DECAL, TOP COWL - MANUAL STARTING INSTRUCTIONS
11	37410A1	TRIM MOULDING ASSEMBLY, TOP COWL
12	10-29227	SCREW, BRASS - MOULDING TO TOP COWL
13	10-29226	SCREW, DECORATIVE - MOULDING TO TOP COWL
14	13-26995	LOCKWASHER, MOULDING FASTENING SCREW
15	11-26419	NUT, MOULDING FASTENING SCREW
16	76370	SHIELD, TO: COWL - REAR
17	37-37859	DECAL, TOP COWL SHIELD - "MERC 900"
18	10-37370	SCREW, SHIELD TO TOP COWL (5/8")
19	13-37371	LOCKWASHER, SHIELD SCREW
20	47341A11	ROPE, STARTER (FOR MANUAL STARTING ONLY)
21	37411	BRACKET, COWL LATCH - TOP COWL FASTENING
22	10-37560	SCREW, COWL LATCH BRACKET TO TOP COWL
23	11-37556	NUT, COWL LATCH BRACKET SCREW
24	79897A4	FRAME, TOP COWL SUPPORT
25	90435	MOUNT, RUBBER - TOP COWL FRAME
26	11-8267089	NUT, RUBBER MOUNT TO TOP COWL FRAME
27	37714	BRACKET, TOP COWL SUPPORT - REAR
28	31014	MOUNT, RUBBER - REAR SUPPORT BRACKET
29	13-26992	LOCKWASHER, RUBBER MOUNT TO REAR SUPPORT BRACKET
30	11-20088	NUT, RUBBER MOUNT TO REAR SUPPORT BRACKET
31	10-26065	SCREW, REAR SUPPORT BRACKET TO TOP COWL FRAME (1")
32	11-29250	NUT, REAR SUPPORT BRACKET SCREW
33	10-74824	SCREW, REAR SUPPORT BRACKET TO BOTTOM COWL (1 1/4")
34	13-8M0204647	LOCKWASHER, REAR SUPPORT BRACKET SCREW
35	37412	LEVER, CLAMPING - TOP COWL MOUNTING
36	23-26819	BUSHING, NYLON - CLAMPING LEVER
37	12-38006	WASHER, CLAMPING LEVER
38	23-31293	BUSHING, RUBBER - CLAMPING LEVER
39	11-30428	FASTENER, CLAMPING LEVER
40	17-29077	PIN, ROLL - CLAMPING LEVER
41	45883A2	BRACKET ASSEMBLY, TOP COWL SUPPORT - FRONT
42	37903	FLANGE, RUBBER - FRONT TOP COWL SUPPORT BRACKET
43	32-8M0108355	HOSE, FROTN SUPPORT BRACKET TO BOTTOM COWL
44	10-78841	SCREW, FRONT SUPPORT BRACKET TO BOTTOM COWL (1 1/2")
45	11-29250	NUT, FRONT SUPPORT BRACKET SCREW
46	10-73657	SCREW, FRONT SUPPORT BRACKET TO TOP COWL FRAME (1 1/2")
47	13-8M0204647	LOCKWASHER, FRONT SUPPORT BRACKET SCREW
48	37640	MOUNT, RUBBER - FRONT SUPPORT BRACKET
49	13-8M0204647	LOCKWASHER, RUBBER MOUNT TO FRONT SUPPORT BRACKET
50	11-22053	NUT, RUBBER MOUNT TO FRONT SUPPORT BRACKET

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 900 (6 CYL.) 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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