– JLM Marine Boat Parts Limited

Mercury 300 (3.4 LITRE) (5611648 & Up) Parts & Diagrams

🔎 Mercury 300 (3.4 LITRE) Reference Library — Exploded parts diagrams (26 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 300 (3.4 LITRE) is a 4-Stroke, V8 64-degree, DOHC, 32-valve outboard motor. Designed for large center-consoles, offshore sport-fishing boats, and multi-engine configurations.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, V8 64-degree, DOHC, 32-valve
Horsepower	300 HP
Displacement	4600 cc (4.6L / 279 CID)
Bore x Stroke	92 mm x 86 mm (3.62 in. x 3.38 in.)
Spark Plug (Type & Gap)	NGK LKAR7C-9
Engine Oil Capacity	7.0 L (7.4 qt)
Recommended Engine Oil	Mercury FourStroke Oil 25W-40
Gear Case Oil Capacity	970 mL (32.8 oz)
Idle Speed (in gear)	600 RPM
Full Throttle RPM Range	5200-6000
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 300 (3.4 LITRE):

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 300 (3.4 LITRE).

▶CARBURETOR ASSEMBLY (15 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	1387-7785A41	CARBURETOR ASSEMBLY (BOTTOM - PORT) Comment: WO-5-4
2	1395-6201	JET, (.080), VENT BOWL (.080)
4	1395-9122	COVER PLATE
6	1395-9481	VENTURI Comment: WO-5
7	1395-9479	BOWL, Fuel Comment: WO-5
9	1395-6199	PLUG, MAIN JET
11	1399-3796	JET, (.076), MAIN FUEL (.076) Comment: WO-5
13	813470	FLOAT
18	1395-83181	NEEDLE, Inlet
20	1395-9117	SHAFT, Throttle
21	67752	LEVER
25	1395-9480	VALVE, Throttle Comment: WO-5
27	27-886111	GASKET, CARBURETOR FLANGE
30	1399-4217	JET, Main (.062), IDLE (.062) Comment: WO-5

▶CARBURETOR PLATE AND REED BLOCK (38 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	1387-7785A38	CARBURETOR ASSEMBLY (TOP - PORT) Comment: (WO-5-1)
2	1387-7785A39	CARBURETOR ASSEMBLY (TOP - STARBOARD) Comment: (WO-5-2)
3	1387-7785A40	CARBURETOR ASSEMBLY (CENTER) Comment: (WO-5-3)
4	1387-7785A41	CARBURETOR ASSEMBLY (B0TTOM - PORT) Comment: (WO-5-4)
5	88586	LINK, Throttle
6	88584	LEVER, Throttle
7	88585	LEVER, Throttle, LOWER - PORT
8	67748	ROLLER, THROTTLE LEVER
9	17-67297	PIN, Clevis
10	12-89302	WASHER, CLEVIS PIN
11	18-26953	COTTER PIN
12	10-22523	SCREW, (.190-32 x .75), THROTTLE LEVER TO CARBURETOR
13	10,13-26996	LOCKWASHER, Stainless Steel, THROTTLE LEVER SCREW
14	12-24676	WASHER, (.200 x .440 x .032), THROTTLE LEVER SCREW
15	32-8M0108355	LINE, (57.00 Inches Bulk)
16	54-68424	CLAMP, FUEL LINES
17	895981	LEVER, Throttle, LOWER CARBURETOR - PORT
18	1395-6027	SCREW, THROTTLE LEVER TO CARBURETOR
19	27-933531	GASKET, CARBURETOR TO SOUND ATTENUATOR
20	8M0027774	PLATE, CARBURETOR - STARBOARD
21	27-886262	GASKET, CARBURETOR PLATE - STARBOARD
22	10-20540	SCREW, (.250-20 x .62), REED BLOCK ADAPTOR
23	10-40011149	SCREW, CARBURETOR PLATE
24	10-90199	SCREW, REED BLOCK ADAPTOR
26	16-815158	STUD, CARBURETOR
27	12-4002217	WASHER, CARBURETOR STUD
28	11-401368	NUT, (M8), CARBURETOR STUD
29	16-20500	STUD, PORT CARBURETOR PLATE
30	11-36069	NUT, STUD
31	884293	ADAPTOR, REED BLOCK
32	75953	REED BLOCK
33	27-657443	GASKET, REED BLOCK
34	34-75362A1	REED ASSEMBLY
35	34-67298	STOP, Reed
36	10-57583T	SCREW, (#8-32 x .375), REED ATTACHING
37	10,13-26996	LOCKWASHER, Stainless Steel, REED SCREW
38	54-61001	J CLIP, HOSE

▶COWLS AND FRONT COVER (22 parts)

Ref	OEM Part #	Part Name
1	2179-7606A3	COWL ASSEMBLY, PORT (WITHOUT DECALS)
2	88354	SEAL, CONTROL CABLE
3	67258	PAD, COWL TO FRONT COVER
4	91837	BLANKET, SOUND - COWL
5	88351	BRACKET, COWL ATTACHING (UPPER)
6	88350	BRACKET, COWL ATTACHING (LOWER)
7	10-4000355	SCREW, (M8 x 35), UPPER AND LOWER BRACKETS
8	88477	SHIELD, INLET - COWL
9	10-48409	SCREW, (#10-16 x .625) Stainless Steel, SHIELD TO COWL
10	88348	CATCH, COWL LATCH
11	88349	LATCH, COWL - STARBOARD
12	10-48409	SCREW, (#10-16 x .625) Stainless Steel, COWL LATCH
13	2180-7607A2	COWL ASSEMBLY, STARBOARD (WITHOUT DECALS)
14	92015	BLANKET, SOUND - COWL
15	88359	SEAL, HARNESS
16	2181-7613A5	COVER ASSEMBLY, Cowl - Front (WITHOUT DECALS)
17	164581	BLANKET, SOUND - COWL FRONT COVER
18	164581	SOUND BLANKET (INSERT)
19	61158T	HOOK, COWL FRONT COVER ATTACHING
20	10-75162	SCREW, HOOK TO COWL FRONT COVER
21	47341A11	ROPE AND HANDLE KIT, Manual/Emergency Start (FOR MANUAL STARTING)
22	19-73336	PLUG, COWL

▶CRANKSHAFT, PISTONS AND CONNECTING RODS (24 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	467-8784A1	CRANKSHAFT ASSEMBLY
2	30-88268T	BEARING, Ball, CRANKSHAFT (LOWER)
3	53-89531	RING, Retaining, BALL BEARING
4	89938	SEAL, CRANKSHAFT/DRIVESHAFT
5	89939	SEAT, CRANKSHAFT/DRIVESHAFT
6	8M0027715	RING, SEALING - CRANKSHAFT
7	31-88270T	RACE, Bearing, CENTER MAIN
8	31-88269T	BEARING, Roller, CENTER MAIN
9	782-9531A3	PISTON ASSEMBLY (PORT)
10	39-88256A12	RING SET, Piston
11	53-8320811	LOCK RING, PISTON
12	631-8185A10	CONNECTING ROD ASSEMBLY
13	10-96114	SCREW, CONNECTING ROD (5/16-24 THREAD)
14	31-43012A2	BEARING ASSEMBLY, Roller, CRANKSHAFT END
15	12-88263	THRUST WASHER, NEEDLE LOCATING
16	29-8M0204715	NEEDLE, Roller Bearing, PISTON END
17	28-91800	KEY, Woodruff, CRANKSHAFT
18	31-814409A1	CARRIER ASSEMBLY
19	31-17898	BEARING, Roller
20	26-41953	SEAL
21	25-823683	O-RING
22	12-33001	WASHER, (.641 x 1.250 x .190), FLYWHEEL NUT
23	11-52901	NUT, (.625-18), FLYWHEEL

▶CYLINDER BLOCK AND END CAPS (49 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	880-9550A13	BLOCK (USE WITH BOSCH STARTER MOTOR)
2	88486	COVER, STARTER MOTOR - UPPER Comment: USE WITH PRESTOLITE STARTER MOTOR
3	10-40062153	SCREW, COVER TO CRANKCASE Comment: USE WITH PRESTOLITE STARTER MOTOR
4	88484	COVER, STARTER MOTOR - LOWER Comment: USE WITH PRESTOLITE STARTER MOTOR
5	10-81516040	SCREW, COVER TO CRANKCASE Comment: USE WITH PRESTOLITE STARTER MOTOR
6	17-40120110	PIN, Dowel, LOCATING
7	17-8M0036405	PIN, CYLINDER BLOCK (BEARING RACE)
8	27-53862	GASKET, SEALING
9	16-14137	STUD, CYLINDER BLOCK (162 MM)
10	16-14136	STUD, CYLINDER BLOCK (110 MM)
11	16-910001	STUD, CYLINDER BLOCK (60 MM)
12	12-4002319	WASHER, POWERHEAD STUDS
13	13-400248	LOCKWASHER, (M10), POWERHEAD STUDS
14	11-400214	NUT, POWERHEAD STUDS
15	10-24220	SCREW, (.190-24 x .190), SET, CYLINDER BLOCK
16	16-815159	STUD, CYLINDER BLOCK TO CRANKCASE
17	13-400248	LOCKWASHER, (M10), CYLINDER BLOCK STUD
18	11-400214	NUT, CYLINDER BLOCK STUD
19	10-81516235	SCREW, CRANKCASE (35 MM)
20	10-81516290	SCREW, CRANKCASE TO CYLINDER BLOCK (90 MM)
21	10-815162170	SCREW, CRANKCASE TO CYLINDER BLOCK (171 MM)
22	10-815162105	SCREW, CRANKCASE TO CYLINDER BLOCK (105 MM)
23	96839	BRACKET, CABLE ANCHOR
24	10-40010127	SCREW, BRACKET TO CRANKCASE
25	13-26992	LOCKWASHER, (.250) Stainless Steel, BRACKET SCREW
26	10-78841	SCREW, (.312-24 x 1.500), SHIFT CABLE TO BRACKET
27	12-8M0042642	WASHER, (.323 x .563 x .063) Stainless Steel, SHIFT CABLE SCREW
28	11-82670911	NUT, (.312-24) Stainless Steel, SHIFT CABLE SCREW
29	1166-8792A1	END CAP ASSEMBLY, LOWER
30	26-54815	SEAL, Oil, END CAP
31	25-88955	O-RING, END CAP
32	10-40011149	SCREW, END CAP ATTACHING
33	21-426585	CHECK VALVE, BLEED HOSE Comment: STRAIGHT-THREADED
34	32-9912688	TUBING, (36.00 Inches Bulk)
35	54-68424	CLAMP, TUBING
36	22-56759	FITTING, Barbed, BLEED HOSE (PRESS-IN)
36A	22-8M0181450	FITTING, BLEED HOSE (PRESS-IN)
37	21-428641	CHECK VALVE ASSEMBLY
38	887821	BRACKET, FLYWHEEL COVER - FRONT
39	10-40062127	SCREW, BRACKET TO CRANKCASE
40	96850	BRACKET, ANCHOR - CONTROL CABLES Comment: EARLY MODELS
41	10-53167T	SCREW, (.312-18 x .880), ANCHOR BRACKET Comment: EARLY MODELS
42	12-8M0204690	WASHER, ANCHOR BRACKET SCREW Comment: EARLY MODELS
43	87609A1	LEVER, SHIFT CABLE LOCKING Comment: EARLY MODELS
44	87609A1	LINK, LEVER TO COVER Comment: EARLY MODELS
45	90211	COVER, SHIFT CABLE Comment: EARLY MODELS
46	17-47175	PIN, LEVER AND COVER Comment: EARLY MODELS
47	39519	CUP, BARREL RETAINER Comment: EARLY MODELS

▶DRIVE SHAFT HOUSING AND EXHAUST TUBE (32 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	1594-9099A2	HOUSING ASSEMBLY, Driveshaft (EXTRA LONG)
2	16-8M0034453	STUD, (.437-14/.437-20 x 2.190), Drive shaft housing/gear housing (2-3/16")
3	16-57984	STUD, (.437-14/.437-20 x 2.380), Drive shaft housing/gear housing (2-3/8")
4	10-54493	SCREW, (.437-14 x 2.500), DRIVE SHAFT HOUSING
5	12-45176	WASHER, DRIVE SHAFT HOUSING STUD
6	11-8M0204653	NUT, DRIVE SHAFT HOUSING STUD
7	88758T	STRAP, SWIVEL BRACKET RETAINING
8	10-67769	SCREW, (.375-24 x 4.00), STRAP TO DRIVE SHAFT HOUSING
9	11-25269	NUT, (.375-24), STRAP TO DRIVE SHAFT HOUSING SCREW
10	94229	TEE WASHER
11	10-68513	SCREW, (#10-32 x .375) Stainless Steel, TEE WASHER
12	77327	MOUNT, LOWER
13	25067	BUMPER, LOWER MOUNT SCREW
14	10-96853	SCREW, (.500-20 x 6.380), LOWER MOUNT
15	88238A10	CABLE ASSEMBLY, Ground
16	12-49339	WASHER, (.8125), LOWER MOUNT SCREW
17	11-25096	NUT, LOWER MOUNT SCREW
18	54-8M0036782	CLAMP, LOWER MOUNT
19	10-40001140	SCREW, (M8 x 35), LOWER MOUNT CLAMP
20	13-400247	LOCKWASHER, (M8), LOWER MOUNT CLAMP SCREW
21	100-8M4500752	COVER, LOWER MOUNT CLAMP
22	10-88417	SCREW, (#12-24 x .620), COVER ATTACHING (5/8")
23	11-35521	NUT, NYLON - COVER TO CLAMP SCREW
24	17-20433	PIN, Dowel (.375 x 1.00), DRIVE SHAFT HOUSING
25	88887T	TUBE, Exhaust (EXTRA LONG)
26	88883	SEAL, EXHAUST TUBE - LOWER
27	25-89417	GROMMET, WATER TUBE
28	32-89098	TUBE, WATER (EXTRA LONG)
29	26-89419	SEAL, WATER TUBE
30	88238A10	CABLE ASSEMBLY, Ground
31	10-73286	SCREW, (.250-20 x .500) Stainless Steel, GROUND WIRE

▶ENRICHNER VALVE AND HOSES (22 parts)

Ref	OEM Part #	Part Name
1	42859A2	VALVE ASSEMBLY, Enrichner, ENRICHNER
2	22-67902	CONNECTOR, ENRICHNER VALVE - SIDE Comment: ATTACHES WITH BRACKET
3	90345	BRACKET, ENRICHNER VALVE Comment: ATTACHES WITH BRACKET
4	10-89075	SCREW, VALVE TO BRACKET Comment: ATTACHES WITH BRACKET
5	12-20192	WASHER, BRACKET SCREW Comment: ATTACHES WITH BRACKET
6	22-90275	CONNECTOR, ENRICHNER VALVE - BOTTOM Comment: ATTACHES WITH BRACKET
7	93573	BRACKET, ENRICHNER VALVE
8	10-28635	SCREW, (.250-20 x .620) Stainless Steel, ENRICHNER VALVE BRACKET
9	13-26992	LOCKWASHER, (.250) Stainless Steel, BRACKET SCREW
10	11-20890	NUT, (.250-20), BRACKET SCREW
11	86-45915	TERMINAL BLOCK, ENRICHNER VALVE LEADS
12	10-69079	SCREW, (#10-16 x .440), TERMINAL BLOCK (7/16")
13	10-62568	SCREW, (#10-16 x .375), LEADS TO TERMINAL BLOCK (3/8")
14	32-8M0108355	LINE, (57.00 Inches Bulk)
15	22-59169003	FITTING, TEE
16	54-68424	CLAMP, HOSES
17	32-9912688	TUBING, (36.00 Inches Bulk) (.125 I.D.)
18	32-9938779	HOSE (.077 I.D.)
19	22-130342	FITTING, TEE (.131 O.D.)
20	22-130341	FITTING, TEE (.200 O.D.)
21	22-130342	TEE, TEE (.131 O.D.)
22	22-13033	TEE FITTING, TEE (.200 O.D.)

▶EXHAUST MANIFOLD AND CYLINDER HEAD (30 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	88834	BRACKET, FLYWHEEL COVER
2	10-81516030	SCREW, FLYWHEEL COVER BRACKET (30 MM)
3	16-8M0034435	STUD, FLYWHEEL COVER MOUNTING
4	12-8M0204663	WASHER, FLYWHEEL COVER STUD (LARGE)
5	12-22887	WASHER, FLYWHEEL COVER STUD (SMALL)
6	11-816874	NUT, FLYWHEEL COVER STUD
7	94110A1	COVER, EXHAUST MANIFOLD
8	27-940601	GASKET, EXHAUST MANIFOLD COVER
9	10-40011149	SCREW, EXHAUST MANIFOLD COVER (25 MM)
10	22-38407	PLUG, (.500-14), CYLINDER BLOCK COVER
11	90435	MOUNT
12	12-21249	WASHER, MOUNT
13	11-8267089	NUT, (.250-28), MOUNT
14	41020A3	CYLINDER HEAD
15	88251	SEAL, CYLINDER HEAD
16	25-88923	O-RING, CYLINDER HEAD
17	10-81742780	SCREW, CYLINDER HEAD (80 MM)
18	54-47483	J CLIP, CYLINDER HEAD SCREW
19	75692	THERMOSTAT (143? )
20	27-8M0204714	GASKET, THERMOSTAT
21	90390A1	COVER KIT, THERMOSTAT
22	10-74824	SCREW, (.312-18 x 1.250), THERMOSTAT COVER (1-1/4")
23	22-687271	FITTING, (.250-18) 90 Degree - Brass, ELBOW - THERMOSTAT COVER
24	32-77653101	HOSE, (24.500 Inches Bulk) (21-1/2")
25	22-91836	TEE, HOSE
26	54-68424	CLAMP, HOSE
27	32-77653101	HOSE, (24.500 Inches Bulk) (3")
28	32-8M0108355	HOSE, TELL TAIL
29	22-76256	NOZZLE, TELL TAIL HOSE - REAR BRACKET

▶EXHAUST PLATE (35 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	43769A3	PLATE, Exhaust
2	25-64872	GROMMET, POPPET VALVE
3	65848	CARRIER, POPPET VALVE
4	86596	POPPET VALVE
5	24-90392	SPRING, POPPET VALVE
6	27-88907003	GASKET, RELIEF VALVE PLATE
7	65664A1	PLATE ASSEMBLY, RELIEF VALVE
8	648771	DIAPHRAGM
9	12-76451	WASHER, DIAPHRAGM SCREW
10	10-69570	SCREW, (#10-16 x .750), DIAPHRAGM TO PLATE
11	65663A2	COVER, RELIEF VALVE
12	10-40001137	SCREW, (M8 x 30), COVER TO EXHAUST PLATE
13	22-687271	FITTING, (.250-18) 90 Degree - Brass, EXHAUST PLATE
14	17-43044	PIN, Dowel, LOCATING - EXHAUST PLATE
15	10-81516265	SCREW, EXHAUST PLATE (65 MM)
16	27-438771	GASKET, EXHAUST PLATE - UPPER
17	88355	SEAL, EXHAUST PLATE TO COWL
18	27-438782	GASKET, EXHAUST PLATE - LOWER
19	88880A1	PLATE, EXHAUST TUBE
20	27-890842	GASKET, Exhaust Tube
21	10-40001137	SCREW, (M8 x 30), PLATE TO DRIVE SHAFT HOUSING
22	13-400247	LOCKWASHER, (M8), PLATE SCREW
23	968432	SHIFT SHAFT, UPPER (EXTRA LONG)
24	23-27132	BUSHING, UPPER SHIFT SHAFT
25	96841	LEVER, UPPER SHIFT SHAFT
26	17-96888	PIN, Roll, LEVER TO SHIFT SHAFT
27	96848	SHIFT LINK
28	23-26856	BUSHING, SHIFT LINK
29	13-29720	WAVE WASHER, SHIFT LINK
30	11-36069	NUT, SHIFT LINK
31	10-96849	SCREW, SHIFT LINK
32	11-28770	NUT, (.312-24) Stainless Steel, SHIFT LINK SCREW (5/16-24)
33	13-29720	WAVE WASHER, SHIFT LINK SCREW
34	11-36069	NUT, SHIFT LINK SCREW (1/4-28)

▶FLYWHEEL, STARTER MOTOR AND IGNITION COILS (34 parts)

Ref	OEM Part #	Part Name
1	887832	COVER, FLYWHEEL
2	19-89219001	PLUG, FLYWHEEL COVER
3	79022	MARKER, TIMING
4	10-37572	SCREW, (.190-32 x .380), TIMING MARKER
5	12-72761	WASHER, (.203 x .562 x .060) Stainless Steel, TIMING MARKER SCREW
6	19-45907	PLUG, Yellow, FLYWHEEL
7	257-7555A11	FLYWHEEL ASSEMBLY, COMPLETE
8	10-32417	SCREW, (.250-28 x .625), FLYWHEEL PLATE
9	10-89317	SCREW, FLYWHEEL HUB
10	398-5454A55	STATOR ASSEMBLY
11	10-77363	SCREW, (#10-24 x 1.50), STATOR
12	10,13-26996	LOCKWASHER, Stainless Steel, STATOR SCREW
13	89004A7	TRIGGER PLATE ASSEMBLY
14	50-88656	STARTER MOTOR ASSEMBLY, PRESTOLITE
15	12-93900	WASHER, STARTER MOTOR (UPPER) (PRESTOLITE)
16	88738	COLLAR, STARTER MOTOR (UPPER) (PRESTOLITE)
17	88739	COLLAR, STARTER MOTOR (LOWER) (PRESTOLITE)
18	12-93901	WASHER, STARTER MOTOR (LOWER) (PRESTOLITE)
19	50-893893	STARTER MOTOR ASSEMBLY (BOSCH)
20	23-8M0034918	COLLAR, STARTER MOTOR (BOSCH)
21	8M0043376	STOP, Rubber, RUBBER - STARTER MOTOR
22	10-69035	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel, CABLE TO STARTER MOTOR
23	13-39107	LOCKWASHER, (.312-24), STARTER MOTOR TERMINAL
24	11-21908	NUT, (.312-18) Cad Plated, STARTER MOTOR TERMINAL
25	339-832757A4	COIL ASSEMBLY, Ignition, IGNITION
26	67614	COVER, IGNITION COIL
27	10-88856	SCREW, IGNITION COIL COVER
28	84-60466A7	CABLE ASSEMBLY, Ground, IGNITION COIL (BLACK)
29	10-32,11-45076	NUT, Brass, IGNITION COIL TERMINAL
30	84-813715A1	LEAD ASSEMBLY, HIGH TENSION
31	332-2854T01	BOOT, HIGH TENSION CABLE
32	85-63709A1	BOOT/TERMINAL KIT, HIGH TENSION CABLE
33	33-896329827	SPARK PLUG (NGK-BUHW)
34	84-93388A1	CABLE ASSEMBLY, (6.00 Inches) Black, STARTER MOTOR TO GROUND (BLACK)

▶FUEL PUMPS (39 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	88853A6	PUMP ASSEMBLY, Fuel
2	21-30430A8	CHECK VALVE ASSEMBLY
3	89031A2	DIAPHRAGM ASSEMBLY
4	NSS	NOT SOLD SEPARATE, FUEL PUMP
5	NSS	NOT SOLD SEPARATE, PULSE CHAMBER
6	NSS	NOT SOLD SEPARATE, FUEL PUMP
7	NSS	NOT SOLD SEPARATE, CHECK VALVE TO HOUSING
8	35-59072	SCREEN, FUEL INLET
9	25-35480	O-RING, (1.237 x .103), FUEL INLET COVER
10	NSS	NOT SOLD SEPARATE, COVER SCREW
11	23004	RETAINER, CHECK VALVE
12	10-43723	SCREW, (#6-32 x .500), RETAINER ATTACHING
13	67623	BASE, FUEL PUMP
14	86449	CHAMBER, PULSE - FUEL PUMP
15	35-91078A1	COVER ASSEMBLY, FUEL FILTER
16	10-89766	SCREW, (#10-32 x .620) Stainless Steel, FUEL FILTER COVER (5/8")
17	10-88447	SCREW, (.190-32 x 1.62), FUEL PUMP (1-1/2")
18	10,13-26996	LOCKWASHER, Stainless Steel, FUEL PUMP SCREW
19	24-86207	SPRING, COMPRESSION
20	86026	RETAINER, SPRING
21	86252	CAP, SPRING END
22	21-42657A3	CHECK VALVE
23	41156A1	BRACKET, FUEL PUMP (PORT)
24	10-81516040	SCREW, FUEL PUMP BRACKET
25	22-19688	FITTING, FUEL LINE (90? )
26	22-64705	FITTING, FUEL LINE (STRAIGHT)
27	22-64706001	TEE, FUEL LINE (TEE)
28	32-8M0108355	LINE, (57.00 Inches Bulk) (57")
29	54-68424	CLAMP, FUEL LINE
30	22-8M0123050	FITTING, Elbow (45 Degree) , INLET FUEL LINE (45? )
31	32-89020	LINE, Fuel, INLET (6-3/4")
32	22-63981	FITTING, CHECK UNIT ADAPTOR (90? )
33	30186	ADAPTOR, CHECK UNIT
34	30187	STEM, CHECK UNIT ADAPTOR
35	25-16524	O-RING, ADAPTOR STEM
36	24-30189	SPRING, ADAPTOR STEM
37	30188	WASHER, ADAPTOR
38	10-76596	SCREW, (.250-20 x 1.250), ADAPTOR LOWER BRACKET

▶GEAR HOUSING(DRIVE SHAFT) (46 parts)

Ref	OEM Part #	Part Name
-	1659-9554A6	GEAR HOUSING ASSEMBLY, COMPLETE (EXTRA LONG)
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	NLA	No Longer Available
2	22-85822A10	CONNECTOR ASSEMBLY, SPEEDOMETER
3	88375	INSERT, WATER (STARBOARD) Comment: EARLY MODELS
4	88376	INSERT, WATER (PORT) Comment: EARLY MODELS
5	10-4004376	SCREW, INSERT TO GEAR HOUSING Comment: EARLY MODELS
6	11-89019	NUT, INSERT TO GEAR HOUSING SCREW Comment: EARLY MODELS
7	17-43044	PIN, Dowel, GEAR HOUSING LOCATING
8	22-8M0169589	FITTING, Grease, GEAR HOUSING
9	23-89525	BUSHING, GEAR HOUSING
10	26-54925	SEAL, Oil, GEAR HOUSING
11	31-88384T	BEARING, Roller, DRIVE SHAFT
11A	22-56800	PLUG, Pipe (.0625-27), GEAR HOUSING
12	45-814809A1	DRIVESHAFT ASSEMBLY (EXTRA LONG)
13	NLA	No Longer Available
14	12-92721	WASHER, PINION GEAR NUT
15	11-35921	NUT, (.625-18), PINION GEAR TO DRIVE SHAFT
16	15-88655A1	SHIM ASSEMBLY, Roller bearing to gear housing
17	31-8M0103473	BEARING ASSEMBLY, Tapered Roller, DRIVE SHAFT
18	11-88710	LOCKNUT, ROLLER BEARING
19	25-88657	O-RING, WATER PUMP
20	46-88776A5	BASE ASSEMBLY, Water Pump
21	26-14381	SEAL, WATER PUMP BASE
22	27-907562	GASKET, LOWER - WATER PUMP
23	90755	PLATE, FACE - WATER PUMP
24	27-936662	GASKET, UPPER - WATER PUMP
25	46-90530A1	BODY ASSEMBLY, Water Pump
26	26-88397	SEAL, RUBBER - WATER INLET TUBE
27	88581	GUIDE, WATER INLET TUBE
28	47-85647	IMPELLER, WATER PUMP
29	28-88422	KEY, IMPELLER DRIVE
30	10-8M0204741	SCREW, (M6 x 20) Stainless Steel, WATER PUMP
31	90753	INSULATOR, WATER PUMP SCREW
32	44197A2	SHAFT, SHIFT (LOWER)
33	53-29641	E RING, RETAINING - SHIFT SHAFT
34	53-78907	RING, Retaining
35	25-25439	O-RING, (.862 x .103), SHIFT SHAFT BUSHING
36	23-77631A2	BUSHING ASSEMBLY, SHIFT SHAFT
37	26-8M0204708	SEAL, Oil, SHIFT SHAFT BUSHING
38	12-77674	WASHER, RUBBER - SHIFT SHAFT BUSHING
39	10-79953Q04	SCREW, (.375-16 x .250), GREASE FILLER
40	22-8M0058389	SCREW, Magnetic, DRAIN (MAGNETIC)
41	12-191833	WASHER, GREASE FILLER AND DRAIN SCREW
42	10-28653	SCREW, (#10-32 x 0.25), GEAR HOUSING
43	19643	WASHER, GEAR HOUSING

▶GEAR HOUSING(PROPELLER SHAFT) (39 parts)

Ref	OEM Part #	Part Name
-	1659-9554A6	GEAR HOUSING ASSEMBLY, COMP. (EXTRA LONG)
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	NLA	No Longer Available
44	789562	SHIFT CAM
45	89594A1	FOLLOWER ASSEMBLY, CAM
46	88523A1	ROD, CLUTCH ACTUATOR
47	24-88579	SPRING, COMPRESSION
48	12-78910	WASHER, COMPRESSION SPRING
49	17-8M0084245	PIN, SPRING LOCATOR
50	15-47397A1	SHIM SET, BEARING OUTER RACE (.002-3-5-10)
51	31-78172A1	BEARING ASSEMBLY, Tapered Roller
52	NLA	No Longer Available
53	31-73363T	BEARING, Roller, FORWARD GEAR
54	31-88583	BEARING, Roller, FORWARD GEAR
55	52-823580	RATCHET, SLIDING CLUTCH
56	17-8M0084243	PIN, Cross, RATCHET TO PROPELLER SHAFT
57	17-78909	PIN, Detent, RATCHET
58	24-78962	SPRING, RETAINING - CROSS PIN
59	44-93848	PROPELLER SHAFT
60	NLA	No Longer Available
61	681001	RING, THRUST - BEARING CARRIER
62	30-88957T	BEARING, Ball, - REVERSE GEAR
63	25-8M0214920	O-RING, BEARING CARRIER
64	88603A4	CARRIER ASSEMBLY, Bearing
65	31-30956T	BEARING, Needle, BEARING CARRIER
66	26-8M0204670	SEAL, BEARING CARRIER
67	28-30281	KEY, LOCATING - BEARING CARRIER
68	14-79447	TAB WASHER, GEAR HOUSING COVER
69	8M2011027	RETAINER, GEAR HOUSING
70	89026	COVER, ANODE
71	10-47658	SCREW, (.437-14 x 1.50) Stainless Steel, ANODE COVER
72	95781	RUDDER
73	23-89514	BUSHING, RUDDER
74	10-95705	SCREW, (.437-14 x 3.00), Gear housing to drive shaft housing
75	12-45176	WASHER, GEAR HOUSING SCREW
76	12-835467Q01	THRUST HUB
77	12-31211Q03	WASHER, Splined, SPLINED - PROPELLER NUT
78	14-816629Q	TAB WASHER, PROPELLER NUT
79	11-52707Q1	PROP NUT KIT, (.750-16)

▶HYDRASTEER COMPONENTS (26 parts)

Ref	OEM Part #	Part Name
--	93538A1	HYDRASTEER LOCKING KIT
1	957791	TILLER ARM
2	10-93348	SCREW, TILLER ARM
3	10-32,11-859124	NUT, Stainless Steel, TILLER ARM SCREW
4	10-69067	SCREW, (.250-20 x 1.375), CLAMPING - TILLER ARM
5	11-8267098	NUT, (.250-20), CLAMPING SCREW
6	965212	CABLE, Steering (50")
7	89522	END, Cable
8	11-64015	NUT, (.250-20), STEERING CABLE
9	10-400036	SCREW, (M5 x 20), STEERING CABLE ATTACHING
10	54-26550	CLAMP, STEERING CABLE ATTACHING
11	10-40019107	SCREW, STEERING CABLE CLIP
12	8M0084613	C WASHER, CLIP SCREW
13	89508	BRACKET, CABLE
14	10-690201	SCREW, (#10-32 x .875), CABLE RETAINER STRAP
15	93690	STRAP, CABLE RETAINER
16	17-69745	PIN, Roll, CABLE BRACKET
17	90733	COVER PLATE
18	89509A1	SWIVEL ASSEMBLY
19	10-94319	SCREW, (.375-24 x 1.5), CABLE SWIVEL
20	12-34931	WASHER, (.406 x .734 x .063) Stainless Steel, CABLE SWIVEL SCREW
21	23-89515A1	BUSHING ASSEMBLY, FLANGED
22	23-89517A1	BUSHING ASSEMBLY, FLANGED
23	23-89516A1	BUSHING ASSEMBLY, FLANGED
24	89513	PLATE, SWIVEL
25	11-33826	NUT, CABLE SWIVEL SCREW

▶HYDRAULIC PUMP AND MOUNTING BRACKETS (42 parts)

Ref	OEM Part #	Part Name
1	823653A9	PUMP ASSEMBLY, Hydraulic Comment: (DESIGN I)
1A	823653A9	PUMP ASSEMBLY, Hydraulic Comment: (DESIGN II)
2	818567	BRACKET Comment: (DESIGN II)
3	10-38837	SCREW, (.312-18 x 1.12) (1-1/8") Comment: (DESIGN II)
4	12-56720	WASHER, (.330 x .750 x .060) Stainless Steel Comment: (DESIGN I)
4A	12-57792	WASHER Comment: (DESIGN II)
5	10-32,11-8M0204718	NUT, Comment: (DESIGN I)
5A	23-34948	SPACER Comment: (DESIGN II)
5B	84-86322A24	CABLE ASSEMBLY, (4.00 Inches) Comment: (DESIGN II)
5C	10-92051	SCREW, (10-16 x .75) (3/4") Comment: (DESIGN II)
6	86-45915	TERMINAL BLOCK
7	10-62568	SCREW, (#10-16 x .375), WIRE TO TERMINAL BLOCK (3/8")
8	84-79138A9	CABLE ASSEMBLY, (6.00 Feet) Black-Negative, BLACK (NEGATIVE)
9	88-8M0085705	BREAKER, Circuit - 20 Ampere (20 AMP)
10	10-8M0113176	SCREW, (#10-24 x .375), CIRCUIT BREAKER
11	10-32,11-45076	NUT, Brass, CIRCUIT BREAKER TERMINAL
12	84-87379A5	WIRE, SOLENOID TO SOLENOID (RED)
13	84-79147A3	HARNESS ASSEMBLY, HYDRAULIC PUMP
14	88075	RETAINER, HARNESS TO MOUNTING BRACKET
15	8M0185622	SOLENOID, Starter
16	10-41508	SCREW, (.250-20 x .500) Stainless Steel, STARTER SOLENOID TO BRACKET (3/8")
17	8,8,13-26995	LOCKWASHER, Stainless Steel, STARTER SOLENOID TERMINAL
18	8-32,8-32,11-26419	NUT, Brass, STARTER SOLENOID TERMINAL
19	13-26992	LOCKWASHER, (.250) Stainless Steel, Starter solenoid terminal (1/4")
20	11-94330	NUT, (.250-20) Brass, STARTER SOLENOID TERMINAL (1/4-20)
21	85-861680	BOOT, RUBBER - STARTER SOLENOID TERMINAL
22	94275	LINK, SOLENOID TO SOLENOID
23	84-86322A15	CABLE ASSEMBLY, (5.50 Inches) Black, SOLENOID TO SOLENOID (BLACK)
24	84-79139A12	CABLE ASSEMBLY, Red-Positive (RED) (POSITIVE)
25	88-79023T10	FUSE ASSEMBLY, 110 Ampere (110 AMP)
26	12-96457	WASHER, Phenolic (.27 x .81 x .062), FUSE TERMINAL
27	11-21825	NUT, (.250-28), FUSE TERMINAL
28	87760T	PLATE, MOUNTING
29	10-39349	SCREW, (.312-18 x .750) Stainless Steel, MOUNTING PLATE TO BRACKET (3/4")
30	13-8M0204647	LOCKWASHER, (.312), MOUNTING PLATE SCREW
31	10-90271	SCREW, (.375-16 x .62), HYDRAULIC PUMP (5/8")
32	13-58643	LOCKWASHER, (.375), HYDRAULIC PUMP SCREW
33	87762	BRACKET, HYDRAULIC PUMP
34	10-31830	BOLT, (.375-24 x 1.75), BRACKET TO TRANSOM (3-1/2")
35	13-58643	LOCKWASHER, (.375), BRACKET SCREW
36	11-46335	NUT, BRACKET SCREW
37	10-48409	SCREW, (#10-24 x .625), RETAINER

▶HYDRAULIC PUMP(DESIGN I) (21 parts)

Ref	OEM Part #	Part Name
-	823653A9	PUMP ASSEMBLY, Hydraulic
--	99073A2	REPAIR KIT, Overhaul
1	89492T	ADAPTOR
2	803852	COUPLING
3	96598A1	MANUAL RELEASE (INCLUDES 3 "O" RINGS)
4	89495	PUMP (INCLUDES SCREWS)
5	35-89496	FILTER
6	25-89498	O-RING, MOTOR END
7	25-89497	O-RING, RESERVOIR END
8	89499	DIPSTICK
9	90587T	RESERVOIR
10	10-90588	SCREW, RESERVOIR (INCLUDES "O" RING)
11	16-90590	THRU STUD (LONG)
12	89484	END FRAME, DRIVE END
13	89485	ARMATURE
14	12-89482	WASHER, THRUST - ARMATURE
15	89486	FIELD AND FRAME
16	89487	BRUSH CARD
17	89488	END FRAME, COMMUTATOR END
18	10-89489	THRU BOLT, MOTOR (4-9/16")
19	11-89481	NUT, THRU BOLT AND STUD

▶HYDRAULIC PUMP(DESIGN II) (23 parts)

Ref	OEM Part #	Part Name
-	17649A02	MOTOR
--	99073A2	REPAIR KIT, Overhaul
1	801786	ADAPTOR
2	803852	COUPLING
3	96598A1	MANUAL RELEASE
4	801787	PUMP (INCLUDES SCREWS)
5	35-89496	FILTER
6	25-89498	O-RING
7	25-89497	O-RING
8	89499	DIPSTICK
9	90587T	RESERVOIR
10	10-90588	SCREW (INCLUDES O-RING)
11	17632T	END CAP ASSEMBLY (W/BEARING)
12	10-17626	SCREW
13	25-17625	O-RING
14	10-17621	SCREW
15	17633	HOLDER KIT
16	17631A1	BRUSH KIT
17	17623	ARMATURE
18	12-17653	WASHER
19	17624	FIELD AND FRAME ASSEMBLY
20	17622	COVER ASSEMBLY (W/BEARING)
21	10-823444	SCREW

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
--	90-112273	OWNERS GUIDE (BLACK)

▶SOUND ATTENUATOR AND COWL BRACKET (35 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	883644	BRACKET, COWL SUPPORT
2	85650	HOUSING, COWL HINGE (STARBOARD)
3	10-76621	SCREW, COWL HINGE HOUSING
4	12-20583	WASHER, HOUSING SCREW
5	88361T	BRACKET, REAR COWL
6	14900A1	SEAL, REAR COWL BRACKET
7	88356	SEAL, REAR COWL BRACKET
8	10-4000335	SCREW, (M6 x 50), REAR COWL BRACKET
9	12-4002315	WASHER, (6.60 X 12.5 X 1.5 mm -SS), REAR COWL BRACKET SCREW
10	13944A1	PLATE, SOUND ATTENUATOR
11	67245T	BRACKET, COWL MOUNTING (UPPER)
12	25-67272	GROMMET, COWL MOUNTING BRACKET
13	90435	MOUNT
14	12-21249	WASHER, MOUNT
15	11-8267089	NUT, (.250-28), MOUNT
16	27-898192	GASKET, PLATE
17	885031	COVER, SOUND ATTENUATOR
18	10-40062127	SCREW, COVER
19	96854T	BRACKET, COWL SUPPORT - FRONT
20	25-67272	GROMMET, FRONT BRACKET
21	88621	RETAINER, CABLE
22	10-34994	SCREW, (#10-32 x 1.00) Stainless Steel, RETAINER TO FRONT BRACKET
23	88357	SEAL, FRONT BRACKET
24	88352	BOOT, FUEL ADAPTOR
25	54-26550	CLAMP, FRONT BRACKET
26	10-78291	SCREW, (.190-24 x .500), CLIP
27	8M0084613	C WASHER, CLIP SCREW
28	67241	HOUSING, COWL LATCH
29	10-92051	SCREW, (10-16 x .75), HOUSING TO FRONT BRACKET
30	76264	LATCH
31	24-85367	SPRING, COWL LATCH
32	90435	MOUNT
33	12-21249	WASHER, MOUNT
34	11-8267089	NUT, (.250-28), MOUNT

▶STARTER MOTOR ASSEMBLY(BOSCH) (8 parts)

Ref	OEM Part #	Part Name
-	50-893893	STARTER MOTOR ASSEMBLY
1	90645	DRIVE KIT
2	13310T1	DRIVE
3	75660	PLATE, DRIVE END
4	13313	BOLT, THRU
5	13312	ARMATURE
6	898265016	BRUSH/SPRING KIT
7	13314	END CAP, COMMUTATOR

▶STARTER MOTOR ASSEMBLY(PRESTOLITE) (15 parts)

Ref	OEM Part #	Part Name
-	50-88656	STARTER MOTOR ASSEMBLY
1	392-9129	BENDIX DRIVE
2	392-9133	HOUSING ASSEMBLY, DRIVE END
3	392-9134	BEARING
4	392-9128	ARMATURE
5	392-5730	THRUST WASHER PACKAGE
6	392-9130	COIL, Field
7	392-5726	BRUSH PLATE
8	392-5727	SPRING SET
9	392-6181	BRUSH SET
10	392-5728	TERMINAL STUD PACKAGE
11	392-9131	HEAD, COMMUTATOR END
12	392-9132	BEARING
13	392-9136	THRU BOLT
14	392-9135	STOP KIT, Pinion

▶SWIVEL BRACKET AND STEERING ARM (46 parts)

Ref	OEM Part #	Part Name
--	27-88605A80	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.
1	1491-9225A3	SWIVEL BRACKET ASSEMBLY
2	26-87735	SEAL, Oil, SWIVEL BRACKET (LOWER)
3	23-818764	BUSHING, SWIVEL BRACKET (LOWER AND UPPER)
4	25-33466	O-RING, SWIVEL BRACKET (UPPER)
5	23-67668	SPACER, SWIVEL BRACKET (UPPER)
6	22-8M0169589	FITTING, Grease, GREASE
7	25-88341	GROMMET, SWIVEL BRACKET
8	26-85023	SEAL, Oil, SWIVEL BRACKET
9	12-87161	WASHER, TILT LOCK LEVER
10	25-48171	O-RING, (.364. x .070), TILT LOCK LEVER
11	85028A2	LEVER ASSEMBLY, TILT LOCK (STARBOARD)
12	23-86600	BUSHING, TILT LEVER RELEASE
13	24-85367	SPRING, TILT LEVER RELEASE
14	41052	PLUNGER, TILT LEVER RELEASE
15	16-88876	STUD, PLUNGER
16	86603	KNOB, PLUNGER
17	864751	COUPLING, TILT LOCK LEVER
18	17-69745	PIN, Roll, LEVER TO COUPLING
19	24-88049	SPRING, TENSION - COUPLING
20	18-93861	COTTER PIN, COUPLING SPRING
21	13-78854	WAVE WASHER, BOTTOM YOKE
22	96852T	YOKE, Bottom
23	53-67684	RING, Retaining, BOTTOM YOKE
24	12-67670	WASHER, THRUST - SWIVEL BRACKET
25	17-840792A1	SWIVEL PIN ASSEMBLY, Steering Arm
26	10-88659	SCREW, STEERING ARM TO UPPER MOUNT
27	77326	MOUNT, RUBBER (UPPER)
28	12-66921	WASHER, UPPER MOUNT BOLT
29	12-78688	WASHER, UPPER MOUNT BOLT
30	11-8M0204653	NUT, (.437-20) Stainless Steel, UPPER MOUNT BOLT
31	88882	BUMPER, Top Yoke, STEERING ARM
32	92876A12	LINK ASSEMBLY, Steering
33	10-849838	SCREW, STEERING LINK TO STEERING ARM (1-1/8")
34	11-33826	NUT, STEERING LINK SCREW
35	12-34931	WASHER, (.406 x .734 x .063) Stainless Steel, STEERING LINK TO STEERING ARM
36	86485A6	TILT SWITCH ASSEMBLY
37	84-65017A14	HARNESS ASSEMBLY, TILT SWITCH
38	88342	STRAP, SWITCH AND SENDER
39	10-87926	SCREW, (#10-32 x .500), STRAP TO SWIVEL BRACKET
40	54-54457	J CLIP, SWITCH AND SENDER LEADS
41	10-98256	SCREW, (.250-28 x .500), CLAMP TO SWIVEL BRACKET
42	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel, CLAMP SCREW
43	23-96851	SPACER, UPPER MOUNT BOLT
44	150311	CLAMP, UPPER MOUNT
45	10-81516290	SCREW, UPPER MOUNT CLAMP

▶TACHOMETER, TRIM GAUGE AND ALARM HORN (28 parts)

Ref	OEM Part #	Part Name
1	79-895283Q43	TACHOMETER
2	79101T	BRACKET, MOUNTING
3	88-72729	LIGHT BULB, Wedge Base (14V - .19W)
4	88-79888	SOCKET, Light Bulb
5	8-32,8-32,11-26419	NUT, Brass
6	84-86323A5	CABLE ASSEMBLY, (1.50 Feet) Purple, TRIM GAUGE (PURPLE - 1-1/2")
7	79-895292Q41	TRIM GAUGE
8	79480	BRACKET, MOUNTING - TRIM GAUGE
9	88-72729	LIGHT BULB, Wedge Base (14V - .19W), TRIM GAUGE
10	88-79888	SOCKET, Light Bulb, TRIM GAUGE
11	8-32,11-26419	NUT, Brass, TRIM GAUGE TERMINAL (8-32)
12	8,8,13-26995	LOCKWASHER, Stainless Steel, TRIM GAUGE TERMINAL
13	84-86396A8	HARNESS ASSEMBLY, Tachometer (5.00 Feet)
14	68878A6	HORN ASSEMBLY, Alarm
15	68879	COVER, ALARM HORN
16	23-8M0084588	SPACER, ALARM HORN
17	12-24676	WASHER, (.200 x .440 x .032), ALARM HORN
18	10-35401	SCREW, (#10 x 1.00), ALARM HORN
19	79-895287Q41	TEMPERATURE GAUGE
20	88-72729	LIGHT BULB, Wedge Base (14V - .19W)
21	88-79888	SOCKET, Light Bulb
22	12-26427	WASHER
23	79480	BRACKET
24	8-32,11-26419	NUT, Brass
25	84-88032A3	CABLE ASSEMBLY, (23.00 Feet) Tan/Blue (TAN/BLUE) - 23'
26	12415	SENDER, Temperature
27	12419	COVER, SENDER
28	19-12431T	PLUG

▶THROTTLE LEVER (30 parts)

Ref	OEM Part #	Part Name
1	74897T	PIVOT, TRIGGER PLATE
2	62459T	BALL JOINT ASSEMBLY, TRIGGER PLATE
3	10-32,11-45076	NUT, Brass, LINK ROD
4	76035	ROD, TRIGGER PLATE
5	10-32,11-46438	NUT, , BALL JOINT
6	89811	LEVER, SPARK ADVANCE
7	10-75168	SCREW, SPARK ADVANCE LEVER - STOP
8	11-29598	NUT, (.250-28) Stainless Steel, SPARK ADVANCE LEVER STOP SCREW
9	52023	CAP, SPARK ADVANCE LEVER STOP SCREW
10	10-12405	SCREW, SPARK ADVANCE LEVER - STOP (1-1/4")
11	10-32,11-68219	NUT, Stainless Steel, SPARK ADVANCE LEVER STOP SCREW
12	48039	CAP, SPARK ADVANCE LEVER STOP SCREW
13	94818	LEVER, THROTTLE CONTROL
14	10-818165	SCREW, (.375-16 x 1.75), THROTTLE LEVER/ADVANCE LEVER (1-3/4")
15	23-55164	BUSHING, THROTTLE LEVER
16	23-55171	BUSHING, SPARK ADVANCE LEVER
17	24-68784	SPRING, THROTTLE AND SPARK ADVNACE LEVER
18	12-68410	WASHER, SPARK ADVANCE LEVER
19	10-75168	SCREW, THROTTLE LEVER - STOP
20	11-29598	NUT, (.250-28) Stainless Steel, THROTTLE LEVER STOP SCREW
21	52023	CAP, THROTTLE LEVER STOP SCREW
22	39483	LATCH, CABLE
23	10-69026	SCREW, (.250-28 x .880), CABLE LATCH TO THROTTLE LEVER
24	12-69057	WASHER, CABLE LATCH SCREW
25	24-20099	SPRING, CABLE LATCH TO THROTTLE LEVER
26	11-826709109	NUT, (.250-28), CABLE LATCH SCREW
27	93259	ROD, THROTTLE CONTROL
28	8M0221994	BARREL, THROTTLE CONTROL ROD
29	936941	CAM, Throttle
30	23-26856	BUSHING, THROTTLE CAM

▶TRANSOM BRACKETS (38 parts)

Ref	OEM Part #	Part Name
1	1494-7476T1	BRACKET, TRANSOM (PORT)
3	10-677552	SCREW, (.500-20 x 6.500), BRACKET TO TRANSOM (6-1/2")
4	10-8M0149747	SCREW, (.500-20 x 4.500), BRACKET TO TRANSOM (4-1/2")
5	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel, BRACKET SCREW
6	11-91962	NUT, (.500-20), BRACKET SCREW
7	10-87180	BOLT, (.500-20 x 11.00), TILT
8	11-82671317	NUT, (.500-20), TILT BOLT
9	99170A2	TILT TUBE
10	12-85022	WASHER, TILT TUBE
11	11-859133	NUT, (1.00-14), TILT TUBE (1"-14)
12	25-45711	O-RING, (.612 x .103), TILT TUBE
13	85026T	PLATE, PIVOT PIN
14	10-28636	SCREW, (.250-20 x .750), PLATE TO TRANSOM BRACKET
15	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel, PLATE SCREW
16	85035T	SPACER, TRANSOM BRACKET
17	10-70732	SCREW, (.250-20 x 2.00), SPACER TO TRANSOM BRACKET
18	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel, SPACER SCREW
19	89949A1	PLATE ASSEMBLY, TRANSOM BRACKET
20	10-90192	SCREW, (.250-20 x .875), PLATE TO TRANSOM BRACKET
21	54-75275	CLAMP, WIRING HARNESS
22	10-88829	SCREW, (#10-24 x .500), CLAMP TO TRANSOM BRACKET
24	79610A6	TRIM CYLINDER ASSEMBLY (79879A1 REPAIR KIT)
25	23-86489	BUSHING, TRIM CYLINDER
26	12-85022	WASHER, TRANSOM BRACKET
27	24-30316	SPRING, TRIM CYLINDER
28	17-85020T	PIN, Pivot, TRIM CYLINDER
29	85024	SHAFT, TRIM CYLINDER
30	23-86637	BEARING, TRIM SHAFT
31	17-91862	PIN, TRIM CYLINDER
32	32-89023A2	HOSE, HYDRAULIC (STARBOARD)
33	25-12602002	GROMMET, HYDRAULIC HOSES
34	22-87207	CONNECTOR, HYDRAULIC HOSE
35	87871T	COVER, INLET - HYDRAULIC HOSE
36	27-87775	GASKET, INLET COVER
37	25-45507	GROMMET, INLET COVER
38	10-36070	SCREW, (#10-32 x 1.250), INLET COVER
39	10,13-26996	LOCKWASHER, Stainless Steel, INLET COVER SCREW
40	10-32,11-68219	NUT, Stainless Steel, INLET COVER SCREW

▶WIRING HARNESS, STARTER SOLENOID AND RECTIFIER (44 parts)

Ref	OEM Part #	Part Name
1	91882	PLATE, IGNITION
2	10-40001140	SCREW, (M8 x 35), IGNITION PLATE
3	13-8M0204647	LOCKWASHER, (.312), IGNITION PLATE SCREW
4	84-65999A2	CABLE ASSEMBLY, Black, GROUND (BLACK)
5	54-47483	J CLIP, FUSE HOLDER - PLATE SCREW
6	12-36042	WASHER, IGNITION PLATE SCREW
7	12-67264	WASHER, (Rubber), IGNITION PLATE SCREW (RUBBER)
8	23-67268	BUSHING, IGNITION PLATE SCREW
9	87-33386A3	SWITCH ASSEMLBY
10	10-38055	SCREW, (.190-32 x .62), Mercury switch to ignition plate (5/8")
11	10-32,11-45076	NUT, Brass, MERCURY SWITCH TERMINAL
12	17-36242	PIN, Roll, MERCURY SWITCH
13	86-66986	TERMINAL BLOCK, IGNITION PLATE
14	10-69079	SCREW, (#10-16 x .440), TERMINAL BLOCK ATTACHING
15	10-37572	SCREW, (.190-32 x .380), LEADS TO TERMINAL BLOCK
16	84-92432A2	HARNESS ASSEMBLY, ENGINE
17	88-8M0207796	FUSE, 20 Ampere
18	84-95084A2	CABLE ASSEMBLY, FUSE
19	78799	SENDER, Temperature (19.50 Inch)
20	89565	COVER, TEMPERATURE SENDER
21	88751	CLAMP, WIRING HARNESS
22	10-28636	SCREW, (.250-20 x .750), CLAMP TO IGNITION PLATE
23	12-20533	WASHER, CLAMP SCREW
24	8M0058226	RECTIFIER ASSEMBLY
25	10-38055	SCREW, (.190-32 x .62), RECTIFIER AND REGULATOR
26	10-32,11-45076	NUT, Brass, RECTIFIER AND REGULATOR TERMINALS
27	84-88809A4	CABLE ASSEMBLY, REGULATOR TO RECTIFIER (YELLOW)
28	88825A7	VOLTAGE REGUALTOR
29	84-88439A2	CABLE ASSEMBLY, Battery - Negative, NEGATIVE
30	89-853654A1	SOLENOID, Starter
31	10-20540	SCREW, (.250-20 x .62), SOLENOID TO IGNITION PLATE (5/8")
32	13-26992	LOCKWASHER, (.250) Stainless Steel, Solenoid to ignition plate screw
33	84-93389A2	WIRE, SOLENOID TO STARTER MOTOR (YELLOW)
34	13-39107	LOCKWASHER, (.312-24), SOLENOID TERMINALS (5/16")
35	11-21908	NUT, (.312-18) Cad Plated, SOLENOID TERMINALS (5/16-18)
36	10,10,13-26996	LOCKWASHER, Stainless Steel, SOLENOID TERMINALS
37	10-32,11-68219	NUT, Stainless Steel, SOLENOID TERMINALS (10-32)
38	84-79139A15	WIRE, SOLENOID TO RECTIFIER (RED)
39	84-92486A2	HARNESS ASSEMBLY, COIL TO SWITCH BOX (#1, 3 AND 5)
40	332-7778A12	SWITCHBOX ASSEMBLY
41	10-90818	SCREW, SWITCH BOX TO IGNITION PLATE
42	23-91912	BUSHING, SWITCH BOX SCREW
43	10-32,11-45076	NUT, Brass, SWITCH BOX TERMINAL
44	10-62568	SCREW, (#10-16 x .375), WIRE ATTACHING

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 300 (3.4 LITRE) 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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