– JLM Marine Boat Parts Limited

Mercury 500 (2305101 THRU 2858813) Parts & Diagrams

🔎 Mercury 500 Reference Library — Exploded parts diagrams (20 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 500 is a 4-Stroke, Inline 4-Cylinder, EFI, SOHC outboard motor. Commonly used on jon boats, pontoons, and mid-size utility craft.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 4-Cylinder, EFI, SOHC
Horsepower	50 HP
Displacement	995 cc
Bore x Stroke	65 mm x 75 mm
Spark Plug (Type & Gap)	NGK IZFR6F-11
Engine Oil Capacity	3.0 L (3.17 quart)
Recommended Engine Oil	SAE 25W-40 Mercury FourStroke Oil
Gear Case Oil Capacity	440 mL (14.9 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 500:

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 500.

▶BOTTOM COWL ASSEMBLY AND SHIFT LINKAGE (67 parts)

Ref	OEM Part #	Part Name
--	23-26600	BUSHING, NYLON - UPPER SHIFT SHAFT
1	2116-4381A1	BOTTOM COWL ASSEMBLY
2	29206	COVER, PLUG - BOTTOM COWL HARNESS HOLE
3	10-45893	SCREW, PLUG COVER TO BOTTOM COWL
4	13-26995	LOCKWASHER, PLUG COVER SCREW
5	11-26419	NUT, PLUG COVER SCREW
6	16-68169	STUD, BOTTOM COWL TO REAR SUPPORT BRACKET
7	11-8267089	NUT, BOTTOM COWL STUD
8	32-8M0108355	TUBE, VENT DISTRIBUTOR OUTLET (8 3/4")
9	22-31521	ELBOW, DISTRIBUTOR AND IGNITION DRIVER VENT TUBE TO BOTTOM C
10	61990	STRAP, VENT HOSE
11	59065A6	STOP SWITCH ASSEMBLY
12	30859	INSULATOR, SLEEVE - INNER SWITCH TERMINAL
13	24-30858A1	SPRING AND CONTACT ASSEMBLY
14	38950A1	COVER ASSEMBLY, STOP SWITCH
15	12-38949	WASHER, SEALING - STOP SWITCH
16	13-21972	LOCKWASHER, CONNECTOR BASE
17	11-21971	NUT, CONNECTOR BASE TO BOTTOM COWL
18	60948A1	COVER PLATE ASSEMBLY
19	37944	PAD, SOUND - COVER PLATE
20	10-8M0113176	SCREW, COVER PLATE TO BOTTOM COWL (3/8")
21	37695	BOOT, CONTROL CABLE
22	23760	BAFFLE, BOTTOM COWL
23	10-52867	SCREW, BAFFLE TO BOTTOM COWL
24	37637	BOOT, FUEL CONNECTOR
25	37692	SUPPORT, EXTERNAL WIRING HARNESS
26	10-21937	SCREW, HARNESS SUPPORT TO BOTTOM COWL (2")
27	11-8M0207775	NUT, HARNESS SUPPORT SCREW
28	32-8M0108355	HOSE, WATER TELL TALE - CYLINDER BLOCK TO BOTTOM COWL (16")
29	22-291112	CONNECTOR, WATER TELL TALE HOSE - BOTTOM COWL
30	52889	NOZZLE, TELL TALE HOSE TO BOTTOM COWL
31	10-41228	SCREW, TELL TALE NOZZLE TO BOTTOM COWL
32	54-48123	CLAMP, WATER TELL TALE HOSE TO CONNECTOR
33	42819A2	PLATE ASSEMBLY, EXHAUST EXTENSION
34	12-38453	WASHER, NYLON - WATER INLET TUBE
35	26-38452	SEAL, RUBBER - WATER TUBE
36	38500	RETAINER, WATER TUBE SEAL
37	10-69069	SCREW, RETAINER TO EXHAUST EXTENSION PLATE (3/4")
38	10-56500	SCREW, EXHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING (1 1/4
39	11-8M0207775	NUT, EXHAUST EXTENSION PLATE SCREW
40	27-796501	GASKET, POWERHEAD TO EXHAUST EXTENSION PLATE
41	38156	SEAL, RUBBER - EXHAUST EXTENSION PLATE
42	99136	STRIP, RUBBER SEAL RETAINING
43	10-37571	SCREW, RETAINING STRIP TO EXHAUST EXTENSION PLATE
44	27-385011	GASKET, EXHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING
45	59037A2	LEVER, QUICK DISCONNECT - THROTTLE AND SHIFT CABLES
46	24-38005	SPRING, COMPRESSION - QUICK DISCONNECT LEVER
47	23-37927	BUSHING, NYLON - QUICK DISCONNECT LEVER
48	17-239281	PIN, ROLL - QUICK DISCONNECT LEVER
49	37926	RETAINER, NYLON BEARING TO EXHAUST EXTENSION PLATE
50	10-37923	SCREW, BEARING RETAINER TO EXHAUST EXTENSION PLATE (1 1/2")
51	46933A1	GROUND STRAP ASSEMBLY, CRANKCASE TO BOTTOM COWL (3 5/8")
52	46933A2	GROUND STRAP ASSEMBLY, DRIVE SHAFT HOUSING TO BOTTOM COWL (3
53	10-62568	SCREW, GROUND STRAP (3/8" SELF TAPPING)
54	13-69432	LOCKWASHER, GROUND STRAP SCREW
55	57244A4	SHIFT SHAFT ASSEMBLY, UPPER (LONG SHAFT)
56	37948A5	ACTUATOR, SHIFT CONTROL
57	12-24664	WASHER, SHIFT CONTROL ACTUATOR
58	11-8267089	NUT, SHIFT CONTROL ACTUATOR TO UPPER SHIFT SHAFT
59	24-37934	SPRING, QUICK DISCONNECT - SHIFT CABLE
60	10-38069	SCREW, QUICK DISCONNECT SPRING TO SHIFT CONTROL ACTUATOR
61	37932	BEARING, NYLON - SHIFT CONTOL ACTUATOR
62	10-36137	SCREW, BEARING TO SHIFT CONTROL ACTUATOR (1")
63	13-21272	LOCKWASHER, BEARING SCREW
64	37935	RAIL, SHIFT CONTROL BEARING
65	10-69028	SCREW, RAIL TO EXHAUST MANIFOLD COVER (3/4")
66	13-26992	LOCKWASHER, RAIL SCREW

▶CARBURETOR ASSEMBLY (22 parts)

Ref	OEM Part #	Part Name
--	1395-92621	REPAIR PARTS KIT (1 PER CARBURETOR)
1	1333-3709	CARBURETOR ASSEMBLY, COMPLETE (KA-24A)
2	1395-8673	FLOAT ASSEMBLY
6	1395-92581	INLET NEEDLE, SEAT AND GASKET
9	1399-1133	COVER, FLOAT BOWL
10	10-52195	SCREW, FLOAT BOWL COVER (SHORT)
11	10-52196	SCREW, FLOAT BOWL COVER (LONG)
12	13-26995	LOCKWASHER, FLOAT BOWL COVER SCREW
14	1399-3938	SCREEN FILTER
16	1399-1135	COVER, STRAINER
18	10-25822	SCREW, STRAINER COVER FASTENING
19	1395-6027	SCREW, THROTTLE STOP LEVER
20	8146791	LEVER, THROTTLE STOP (SEE NOTE BELOW)
21	1399-2012	SHAFT, THROTTLE
25	1399-3392	SHUTTER, THROTTLE
27	1399-1713	SCREW, IDLE ADJUSTMENT
28	10-28405	SCREW, PLUG - MAIN FUEL JET CHANNEL
30	1399-1459	JET, MAIN FUEL (.059)
33	10-23178	SCREW, PLUG - MAIN NOZZLE
35	10-28845	SCREW, PLUG - BODY CHANNEL
37	27-31402	GASKET, CARBURETOR FLANGE
38	11-29250	NUT, CARBURETOR MOUNTING STUD

▶CARBURETOR LINKAGE AND CHOKE SOLENOID (34 parts)

Ref	OEM Part #	Part Name
1	45068	CHOKE SOLENOID
2	13-8M0204647	LOCKWASHER, CHOKE SOLENOID TERMINAL
3	11-68219	NUT, CHOKE SOLENOID TERMINAL
4	10-26066	SCREW, CHOKE SOLENOID TO FRONT BRACKET
5	13-8M0204647	LOCKWASHER, CHOKE SOLENOID SCREW
6	11-22053	NUT, CHOKE SOLENOID SCREW
7	48315A4	PLUNGER AND LINK ASSEMBLY, CHOKE SOLENOID
8	12-30164	WASHER, PLUNGER AND LINK
9	18-26953	COTTER PIN, LINK TO UPPER CHOKE SHUTTE
10	1333-3709	CARBURETOR ASSEMBLY, COMPLETE
11	27917	CLUSTER, THROTTLE LEVER (UPPER CARBURETOR)
12	1395-6027	SCREW, CLUSTER TO THROTTLE LEVER
13	53719A2	PICK-UP BRACKET ASSEMBLY SERIAL #2623695 AND UP
14	10-53651	SCREW, PICK-UP BRACKET (3/4")
15	90242A1	KNOB, CHOKE ROD
16	25-20116	GROMMET, CHOKE KNOB
17	46303	"U" LINK, CHOKE ROD TO CHOKE KNOB
18	10-69022	SCREW, "U" LINK TO CHOKE KNOB
19	13-26996	LOCKWASHER, "U" LINK SCREW
20	18-210711	COTTER PIN, "U" LINK TO CHOKE ROD
21	46304	ROD, CHOKE (NOT AS SHOWN)
22	17-25391	RIVET, CHOKE SHUTTER TO CHOKE ROD
23	24-28965	SPRING, TENSION - CHOKE ROD TO CARBURETOR
24	10-28713	SCREW, TENSION SPRING TO CARBURETOR
25	27711	RETAINER, SPRING
26	38604	SHUTTER, CHOKE - CARBURETOR
27	23-30438	BUSHING, NYLON - UPPER CHOKE SHUTTER
28	16-69036	STUD, CARBURETOR - CHOKE SHUTTER PIVOT (1 3/8")
29	12-30164	WASHER, CHOKE SHUTTER CARBURETOR STUD
30	11-20110	NUT, CHOKE SHUTTER TO CARBURETOR STUD
31	35-56197	SCREEN, FILTER - CARBURETOR
32	16-69037	STUD, FILTER SCREEN TO CARBURETOR (1 1/8")
33	12-30164	WASHER, FILTER SCREEN STUD
34	11-20110	NUT, FILTER SCREEN STUD

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (46 parts)

Ref	OEM Part #	Part Name
1	1440-3290A1	CLAMP BRACKET ASSEMBLY
2	28403A3	THUMB SCREW ASSEMBLY
3	12-28404	WASHER, THUMB SCREW
4	8M0041936	TUBE, TILT - CLAMP BRACKET TO SWIVEL BRACKET
5	12-52864	WASHER, CLAMP BRACKET TO SWIVEL BRACKET
6	11-858869	NUT, TILT TUBE FASTENING
7	53078	CAP, PLASTIC - TILT TUBE ENDS
8	16-59625	STUD, CLAMP BRACKET
9	23-59624	SPACER, CLAMP BRACKET STUD
10	13-8M0204647	LOCKWASHER, CLAMP BRACKET STUD
11	11-22053	NUT, STUD TO CLAMP BRACKET
12	17-8M0026068	TILT LOCK PIN ASSEMBLY
13	87432	REVERSE LOCK ASSEMBLY
14	18-45882	COTTER PIN, REVESE LOCK TO SHAFT
15	56349	SHAFT, REVERSE LOCK TO SWIVEL BRACKET
16	24-29821	SPRING, TENSION - REVERSE LOCK
17	17-25598	ROLL PIN, REVERSE LOCK SPRING ATTACHING
18	1442-3233A1	SWIVEL BRACKET ASSEMBLY (LONG SHAFT)
19	26-32911	OIL SEAL, SWIVEL BRACKET
20	22-69059	FITTING, GREASE - SWIVEL BRACKET
21	19-77633Q	LUBRICAP, SWIVEL BRACKET GREASE FITTING
22	38-56267	SERIAL PLATE
23	10-25612	SCREW, DRIVE - SERIAL PLATE TO SWIVEL BRACKET
24	74316A1	SWIVEL PIN AND STEERING ARM ASSEMBLY (LONG SHAFT)
25	30711	BUMPER, STEERING ARM
26	10-33986	BOLT, UPPER MOUNT OT SWIVEL PIN
27	12-47606	WASHER, SWIVEL PIN
28	76535T	BRACKET, RIDE GUIDE ATTACHING
29	16-39781	STUD, RIDE GUIDE BRACKET TO STEERING ARM (1 1/4")
30	11-8M0204726	NUT, RIDE GUIDE BRACKET STUD
31	10-31830	SCREW, STEERING ARM TO RIDE GUIDE KIT
32	11-8M0204726	NUT, STEERING ARM SCREW
33	47912A1	LEVER ASSEMBLY, TILT STOP - STARBOARD SIDE
34	47913A3	LEVER ASSEMBLY, TILT LOCK - PORT SIDE
35	10-47916	SCREW, TILT LOCK AND STOP LEVER TO SWIVEL BRACKET
36	11-29250	NUT, TILT LOCK AND STOP LEVER SCREW
37	23-47911	BUSHING, TILT LOCK AND STOP LEVER
38	13-34632	WASHER, WAVE - TILT LOCK AND STOP LEVER
39	12-26825	WASHER, TILT LOCK AND STOP LEVER
40	11-29250	NUT, TILT LOCK AND STOP LEVER TO CLAMP BRACKET
41	12-26837	WASHER, SWIVEL PIN TO BOTTOM YOKE (.065)
42	77416T1	YOKE, BOTTOM
43	11-71956	NUT, RETAINING - SWIVEL PIN
44	10-68299	BOLT, CLAMP BRACKET TO BOAT TRANSOM (3")
45	12-68300	WASHER, CLAMP BRACKET BOLT
46	11-82670912	NUT, CLAMP BRACKET BOLT

▶COWLING AND FRONT COVER (14 parts)

Ref	OEM Part #	Part Name
--	92-86166Q1	GLUE (BLANKET ADHESIVE)
1	2182-7927A5	COWL FRONT COVER ASSEMBLY
2	56848	KNOB, COWL FRONT COVER FASTENING
3	12-30771	WASHER, COVER FASTENING KNOB
4	12-27129	WASHER, COVER FASTENING KNOB
5	24-30772	SPRING, TENSION - COVER FASTENING KNOB
6	17-29077	PIN, ROLL - TENSION SPRING TO KNOB
7	38674	BLANKET, SOUND ABSORBING
8	31095	SEAL, SOUND - LOWER SECTION
9	38133	SEAL, SOUND - UPPER SECTION
10	2118-3247A3	WRAP AROUND COWL ASSEMBLY
11	46785A1	COWL LATCH ASSEMBLY
12	30413	HOOK, COWL LATCH FASTENING
13	37794	BLANKET, SOUND ABSORBING

▶CRANKSHAFT, PISTON AND CONNECTING ROD (30 parts)

Ref	OEM Part #	Part Name
1	11-8M0214915	NUT, FLYWHEEL
2	12-33001	WASHER, FLYWHEEL NUT
3	28-20094	KEY, FLYWHEEL DRIVE
4	400-2976A2	CRANKSHAFT
5	25-29619	"O" RING, DRIVE SHAFT SPLINE
6	500-5345A4	CENTER MAIN BEARING ASSEMBLY (USES HEX HEAD SCREW)
7	17-20032	DOWEL PIN, CENTER MAIN BEARING
8	29-20046T	BEARING, NEEDLE
9	20047	RACE, OUTER
10	53-20048	RING, SNAP - OUTER RACE CLAMPING
11	10-20784	SCREW, CENTER MAIN BEARING CLAMPING (1 1?2") - HEX HEAD SCR
12	11-8M0207775	NUT, CENTER MAIN BEARING CLAMPING SCREW
13	17-20379	DOWEL PIN, (STEPPED)
14	534-3267T25	MAIN BEARING ASSEMBLY (VALVE TYPE)
15	17-20032	DOWEL PIN, MAIN BEARING
16	10-45775	SCREW, MAIN BEARING CLAMPING (9/16")
17	11-45774	NUT, MAIN BEARING CLAMPING SCREW
18	34-88498A1	REED SET, MATCHED - MAIN BEARING
19	34-20053	REED STOP, MAIN BEARING REED VALVES
20	10-77280	SCREW, REED STOP MOUNTING (9/16")
21	11-29469	NUT, REED STOP MOUNTING SCREW
22	780-9229A7	PISTON AND PISTON PIN ASSEMBLY
23	40-828119	LOCK RING, PISTON PIN
24	39-27841A12	RING, PISTON
25	632-7621A3	CONNECTING ROD AND CAP ASSEMBLY
26	10-45379	SCREW, CAP TO CONNECTING ROD
27	11-20061	NUT, CONNECTING ROD SCREW
28	29-20046T	BEARING, NEEDLE - CRANKPIN
29	29-20063	BEARING, NEEDLE - PISTON PIN
30	12-47275	WASHER, NEEDLE LOCATING

▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (59 parts)

Ref	OEM Part #	Part Name
1	831-5347A3	CYLINDER BLOCK AND CRANKCASE ASSEMBLY
2	1100-3281A1	END CAP ASSEMBLY, UPPER
3	26-41953	OIL SEAL
4	25-20081	"O" RING, UPPER END CAP
5	30-63742T	BALL BEARING, UPPER END CAP
6	17-20032	DOWEL PIN, CYLINDER BLOCK TO MAIN BEARING
7	17-20323	DOWEL PIN, CYLINDER BLOCK TO CENTER MAIN BEARING
8	22-328022	PLUG, PIPE - WATER PRESSURE AND BALANCE TUBE HOLES
9	16-64936	STUD, CARBURETOR MOUNTING (1 3/16")
10	16-33111	STUD, CRANKCASE TO DRIVE SHAFT HOUSING (1 9/16")
11	17-43044	DOWEL PIN, CRANKCASE TO CYLINDER BLOCK
12	16-8M0034463	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (3 7/16")
13	16-34378	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (2 5/16")
14	16-29989	STUD, CYLINDER BLOCK TO DRIVE SHAFT HOUSING (1 15/16")
15	22-291112	CONNECTOR, WATER TELL TALE HOLE - CYLINDER BLOCK
16	15-20082A1	SHIM, UPPER END CAP TO CYLINDER BLOCK AND CRANKCASE
17	10-29198	SCREW, UPPER END CAP MOUNTING (7/8")
18	90435	MOUNT, RUBBER - CRANKCASE
19	11-8M0207775	NUT, CRANKCASE RUBBER MOUNT
20	37996	GROUND STRAP, CRANKCASE MOUNT (ALSO USE ON STARTER ENGINES)
21	10-69091	SCREW, CRANKCASE TO CYLINDER BLOCK (1 5/8")
22	10-22039	SCREW, CRANKCASE TO CYLINDER BLOCK (2 3/4")
23	12-20084	WASHER, CRANKCASE SCREW
24	11-29250	NUT, CRANKCASE SCREW
25	10-53904	SCREW, MAIN BEARING LOCKING - REED BALANCE
26	14-20091	TAB WASHER, BEARING LOCKING SCREW
27	10-20359	SCREW, CENTER MAIN BEARING LOCKING
28	1102-4181A1	END CAP ASSEMBLY, LOWER
29	21-28481A1	CHECK VALVE ASSEMBLY, LOWER END CAP
30	26-29478	OIL SEAL, LOWER
31	26-41953	OIL SEAL, UPPER
32	25-20081	"O" RING, LOWER END CAP
33	30-63742T	BALL BEARING, LOWER END CAP
34	15-20085A1	SHIM, LOWER END CAP TO CRANKCASE AND CYLINDER BLOCK (.002-3-
35	10-29198	SCREW, LOWER END CAP MOUNGING (7/8")
36	32-8M0108355	TUBE, BALANCE - MAIN BEARING
37	22-291112	CONNECTOR, BALANCE TUBE TO CYLINDER BLOCK
38	54-20386	CLAMP, BALANCE TUBE TO CONNECTORS
39	27-854913	GASKET, CYLINDER BLOCK TO BAFFLE PLATE
40	90421T01	PLATE, BAFFLE - EXHAUST MANIFOLD
41	27-854924	GASKET, BAFFLE PLATE TO EXHAUST COVER
42	46112A3	COVER, EXHAUST MANIFOLD
43	10-37562	SCREW, MANIFOLD COVER TO CYLINDER BLOCK (1")
44	10-38837	SCREW, MANIFOLD COVER TO CYLINDER BLOCK - HIGH TENSION CLIP
45	54-52905	CLIP, HIGH TENSION LEAD
46	1017-7054A1	COVER, CYLINDER BLOCK
47	27-85487	GASKET, CYLINDER BLOCK COVER
48	10-20653	SCREW, CYLINDER BLOCK COVER MOUNTING
49	104-87	NUT, COVER MOUNTING SCREW
50	90435	MOUNT, RUBBER - CYLINDER BLOCK COVER
51	11-8267089	NUT, CYLINDER BLOCK COVER RUBBER MOUNT
52	27935	COVER, TRANSFER PORT
53	27-279361	GASKET, TRANSFER PORT COVER
54	10-28635	SCREW, TRANSFER PORT COVER MOUNTING (CAP HEAD)
55	22-62365A1	CHECK VALVE ASSEMBLY, BLEED HOSE (UPPER)
56	21-28481A1	CHECK VALVE ASSEMBLY, BLEED HOSE VALVE
57	32-9912688	HOSE, CYLINDER BLEED (5 1/2")
58	22-33373001	CONNECTOR, CYLINDER BLEED HOSE (UPPER)
59	54-20387	CLAMP, BLEED HOSE ATTACHING

▶DISTRIBUTOR ADAPTOR AND PILOT ASSEMBLY (55 parts)

Ref	OEM Part #	Part Name
1	393-2799A19	DISTRIBUTOR ASSEMBLY, COMPLETE (SEE PAGE 11 FOR BREAKDOWN)
2	45391	SPACER, IGNITION WIRE
3	33-896329827	SPARK PLUG (CHAMPION - L19V)
4	30109	GROUND STRAP, DISTRIBUTOR TO CRANKCASE
5	10-62568	SCREW, DISTRIBUTOR GROUND STRAP TO TAB BRACKET (3/8")
6	53-78201	BRACKET, TAB - CRANKCASE SCREW - DISTRIBUTOR GROUND STRAP
7	45-47953	DRIVE SHAFT, DISTRIBUTOR
8	46242A1	PILOT ASSEMBLY, DISTRIBUTOR
9	10-455611	SCREW, DISTRIBUTOR PILOT TO DISTRIBUTOR (1 1/8")
10	24-27944	SPRING, HORSESHOE
11	17-27962	PIN, SPRING TERMINAL
12	48103A1	ECONOMIZER COLLAR AND PIN ASSEMBLY
13	17-27961	PIN, SPRING RETAINER
14	22-25094	FITTING, GREASE - ECONOMIZER COLLAR
15	38230A1	THROTTLE ACTUATOR ASSEMBLY
16	23-26602	BUSHING, NYLON - THROTTLE ACTUATOR
17	10-46420	SCREW, THROTTLE ACTUATOR TO SECTOR GEAR
18	12-46246	WASHER, DISTRIBUTOR PILOT TO DISTRIBUTOR ADAPTOR
19	66856A1	ADAPTOR, DISTRIBUTOR
20	10-78841	SCREW, ADAPTOR AN PILOT TO CRANKCASE
21	12-20084	WASHER, ADAPTOR AND PILOT TO CRANKCASE SCREW
22	11-22053	NUT, ADAPTOR AND PILOT TO CRANKCASE SCREW
23	22-25094	FITTING, GREASE - DISTRIBUTOR ADAPTOR
24	12-27939	WASHER, THRUST - DISTRIBUTOR ADAPTOR
25	30-20066	BEARING, BALL - DISTRIBUTOR ADAPTOR
26	14-27960	TAB WASHER, CAP LOCKING
27	13-27959	WASHER, WAVE - TAB WASHER TENSION
28	27955	CAP, ADAPTOR AND PILOT FASTENING
29	23-29909	SPACER, DRIVEN PULLEY
30	29906A1	DRIVEN PULLEY ASSEMBLY
31	17-29908	PIN, DRIVEN PULLEY
32	29907	FLANGE, DRIVEN PULLEY
33	28-29910	KEY, DISTRIBUTOR DRIVING
34	10-41506	SCREW, PULLEY CLAMPING
35	13-26996	LOCKWASHER, PULLEY CLAMPING SCREW
36	20140	BELT, TIMING
37	46251	PLATE, THROTTLE STOP
38	23-48456	SPACER, THROTTLE PLATE TO ADAPTOR
39	10-28668	SCREW, THROTTLE STOP PLATE TO DISTRIBUTOR ADAPTOR (7/8")
40	10-21504	SCREW, THROTTLE STOP ADJUSTING (1 1/4")
41	25-46252	GROMMET, THROTTLE STOP ADJUSTING SCREW
42	26852	CAP, NYLON - THROTTLE STOP ADJUSTING SCREW
43	27947	SWIVEL, LINKAGE - ECONOMIZER COLLAR
44	25996A1	SWIVEL AND LINK ROD ASSEMBLY
45	11-25168	NUT, UPPER LINK ROD ADJUSTING
46	37700	ROD, LINK - UPPER
47	27948	SWIVEL, UPPER LINK ROD TO THROTTLE CONTROL LEVER
48	12-8M0204649	WASHER, UPPER SWIVEL TO THROTTLE LEVER
49	11-826709109	NUT, SWIVEL TO THROTTLE LEVER
50	53143A2	LEVER, THROTTLE CONTROL
51	10-98556	SCREW, THROTTLE LEVER TO EXHAUST COVER
52	12-8M0042641	WASHER, THROTTLE LEVER SCREW
53	23-29529	BUSHING, THROTTLE LEVER SCREW
54	24-37934	SPRING, QUICK DISCONNECT - THROTTLE CABLE TO THROTTLE LEVER
55	10-38069	SCREW, ANCHOR - QUICK DISCONNECT SPRING TO THROTTLE LEVER

▶DISTRIBUTOR ASSEMBLY, COMPLETE (32 parts)

Ref	OEM Part #	Part Name
-	393-2799A19	DISTRIBUTOR ASSEMBLY, COMPLETE
--	8M0084600	CONNECTOR, SPARK PLUG LEAD
1	393-2799A21	HOUSING ASSEMBLY, PRIMARY (SEE NOTE BELOW)
2	13-26917	WASHER, WAVE - PRIMARY HOUSING
3	393-2795	SHIM, TRIGGER HOUSING TO PRIMARY HOUSING
4	393-2918A6	TRIGGER HOUSING ASSEMBLY
5	53-45906	RING, RETAINER - ROTOR SHAFT BALL BEARING
6	30-26379	BEARING, BALL - ROTOR SHAFT
7	393-3269A3	ROTOR SHAFT ASSEMBLY
8	393-3014A2	ADAPTOR ASSEMBLY, HOUSING TO DISTRIBUTOR CAP
9	17-20032	DOWEL PIN, ADAPTOR TO PRIMARY HOUSING
10	27-46351	GASKET, ADAPTOR TO PRIMARY HOUSING
11	10-32627	SCREW, ADAPTOR TO HOUSING
12	11-46438	NUT, ADAPTOR TO HOUSING SCREW
13	10-45218	SCREW, SHIM AND TRIGGER HOUSING TO PRIMARY HOUSING (3/8")
14	22-31521A1	ELBOW ASSEMBLY, VENT HOSE - ADAPTOR HOUSING
15	27-36268	GASKET, DISTRIBUTOR CAP TO ADAPTOR
16	393-2955A2	DISTRIBUTOR CAP ASSEMBLY
17	22-31521	ELBOW, VENT HOSE - DISTRIBUTOR CAP
18	393-1293A1	BRUSH AND SPRING ASSEMBLY
19	10-60464	SCREW, DISTRIBUTOR CAP TO ADAPTOR TO HOUSING (2")
20	12-89302	WASHER, DISTRIBUTOR CAP FASTENING SCREW
21	11-46438	NUT, DISTRIBUTOR CAP FASTENING SCREW
22	84-821945A4	HIGH TENSION CABLE ASSEMBLY, DISTRIBUTOR TO COIL
23	332-2854T01	BOOT, HIGH TENSION CABLE TO COIL
24	85-94589	SLEEVE, SPARK PLUG LEAD
25	25-26547	GROMMET, HIGH TENSION CABLE
26	32-46398	SLEEVE, HIGH TENSION CABLE
27	84-813715A1	SPARK PLUG ASSEMBLY ORDER 1-36549A1 KIT FOR REPLACEMENT OF
28	85-63709A1	PROTECTOR, SPARK PLUG LEAD
29	32-46768	SLEEVE (LEADS 1, 2, 3, 4) - 6"
30	32-46768	SLEEVE, HIGH TENSION LEAD (LEADS 1, 2, 3, 4)

▶DRIVE SHAFT HOUSING ASSEMBLY (49 parts)

Ref	OEM Part #	Part Name
1	1564-3913A2	DRIVE SHAFT HOUSING ASSEMBLY (LONG SHAFT)
2	19-47579	PLUG, PLASTIC - TRIM TAB SCREW HOLE
3	16-8M0022145	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING (1 3/4")
4	16-57935	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING (3")
5	11-8M0204653	NUT, GEAR HOUSING TO DRIVE SHAFT HOUSING STUDS (7/16")
6	12-45176	WASHER, GEAR HOUSING TO DRIVE SHAFT HOUSING STUDS (7/16")
7	47836	ROD, PUSH - REVERSE LOCK (LONG SHAFT)
8	11-60049	NUT, JAM - PUSH ROD
9	47837	ROD END, PUSH ROD
10	24-78203A2	PIN, REVERSE LOCK LEVER
11	18-25191	COTTER PIN, PUSH ROD TO REVERSE LOCK
12	52917	GUIDE, PUSH ROD
13	22-390721	PLUG, GREASE - REVERSE LOCK HOLE
14	35474T	COVER, LOWER MOUNT CLAMP
15	10-29722	SCREW, COVER TO LOWER MOUNT CLAMP
16	11-35521	NUT, LOWER MOUNT CLAMP COVER
17	69592F1	CLAMP, LOWER MOUNT TO DRIVE SHAFT HOUSING
18	10-29256	SCREW, LOWER MOUNT CLAMP TO DRIVE SHAFT HOUSING (7/8")
19	24-35522	SPRING, TENSION - LOWER MOUNT CLAMP
20	75304T1	MOUNT, RUBBER - LOWER
21	25067	BUMPER, RUBBER - LOWER MOUNT SCREW
22	10-75284	SCREW, LOWER MOUNT (5 1/2")
23	12-28051	WASHER, LOWER MOUNT SCREW
24	12-28053	WASHER, RUBBER - LOWER MOUNT SCREW
25	12-30119	WASHER, LOWER MOUNT SCREW
26	11-25096	NUT, LOWER MOUNT SCREW
27	75305	MOUNT, RUBBER - UPPER
28	24929	PACKING, "U" CUP - UPPER MOUNT COVERS
29	79680A1	COVER, UPPER MOUNT - OUTSIDE HALF
30	79680A1	COVER, UPPER MOUNT - INSIDE HALF
31	10-49987	SCREW, UPPER MOUNT COVER - REAR (1 1/2")
32	10-37941	SCREW, UPPER MOUNT COVER - FRONT (1 3/4")
33	11-35888	NUT, UPPER MOUNT COVER FASTENING SCREW
34	12-30520	WASHER, UPPER MOUNT BOLT (37/64 ID)
35	12-30521	WASHER, RUBBER - UPPER MOUNT BOLT
36	12-30519	WASHER, UPPER MOUNT BOLT (3/8 ID)
37	11-23161	NUT, UPPER MOUNT BOLT
38	27-385011	GASKET, EXHAUST EXTENSION PLATE TO DRIVE SHAFT HOUSING
39	11-862902	NUT, POWERHEAD TO DRIVE SHAFT HOUSING STUDS (5/16")
40	695441	TUBE, EXHAUST (LONG SHAFT)
41	23-23651	SLEEVE, WATER INLET TUBE
42	32-45679	TUBE, WATER INLET (LONG SHAFT)
43	38157	SEAL, TRIM COVER TO DRIVE SHAFT HOUSING
44	38154	STRIP, RETAINING - TRIM COVER SEAL (SIDE)
45	38158	STRIP, RETAINING - TRIM COVER SEAL (REAR)
46	10-48408	SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (SELF TAPPING)
47	12-30164	WASHER, RETAINING STRIP SCREW
48	37687	COVER, TRIM - DRIVE SHAFT HOUSING
49	10-37571	SCREW, TRIM COVER TO DRIVE SHAFT HOUSING

▶FLYWHEEL ASSEMBLY AND STATOR (17 parts)

Ref	OEM Part #	Part Name
1	11-8M0214915	NUT, FLYWHEEL
2	12-33001	WASHER, FLYWHEEL NUT
3	28-20094	KEY, FLYWHEEL DRIVE
4	223-2403A18	FLYWHEEL ASSEMBLY (STARTED WITH SERIAL #2406035)
5	50-39837	RATCHET, FLYWHEEL - FLEX PLATE
6	10-32417	SCREW, PLATE AND RATCHET TO FLYWHEEL HUB (5/8")
7	10-98256	SCREW, FLEX PLATE TO FLYWHEEL (1/2")
8	17-26618	PIN, DOWEL - PULLEY TO FLYWHEEL
9	29788	FLANGE, FLYWHEEL PULLEY
10	30306	PULLEY, FLYWHEEL
11	29787	HUB, FLANGE - FLYWHEEL PULLEY
12	398-2996	STATOR, ALTERNATOR - FLYWHEEL
13	10-57021	SCREW, STATOR TO UPPER END CAP (7/8")
14	54-24836	CLAMP, STATOR LEAD TO CRANKCASE
15	10-41228	SCREW, STATOR LEAD CLAMP FASTENING (1/2")
16	8M0084613	"D" WASHER, STATOR LEAD CLAMP SCREW
17	54-46379	CLIP, STATOR LEAD TO CRANKCASE

▶FUEL PUMP ASSEMBLY (24 parts)

Ref	OEM Part #	Part Name
1	56677A6	FUEL PUMP ASSEMBLY
2	21-30430A1	CHECK VALVE ASSEMBLY
3	23014A1	DIAPHRAGM KIT
7	23004	RETAINER, CHECK VALVE
8	10-43725	SCREW, RETAINER TO HOUSING
9	23008	COVER, FUEL PUMP
10	10-30273	SCREW, FUEL PUMP MOUNTING (1 7/8")
11	10-73013	SCREW, FUEL PUMP MOUNTING (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	32-32094	FUEL LINE, PUMP TO LOWER AND UPPER FILTER
16	22-22995	ELBOW, FUEL PUMP INLET
17	22-22946	SLEEVE, RUBBER
18	22-22948	NUT, ELBOW
19	32-30036	FUEL LINE, FUEL PUMP TO ADAPTOR
20	22-37682	CONNECTOR, FUEL LINE TO ADAPTOR
21	30186	ADAPTOR, CHECK UNIT (FUEL LINE)
22	30187	STEM, CHECK UNIT ADAPTOR
23	25-16524	"O" RING, ADAPTOR STEM
24	24-30189	SPRING, ADAPTOR STEM
25	30188	CUP WASHER, ADAPTOR
26	10-21937	SCREW, ADAPTOR TO BOTTOM COWL (2")
27	11-8M0207775	NUT, ADAPTOR SCREW

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (56 parts)

Ref	OEM Part #	Part Name
-	1626-3927A8	GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT)
1	1626-3927A6	GEAR HOUSING ASSEMBLY (PLASTIC WATER PUMP AND SPIRAL GEARS)
2	16-57934	STUD, WATER PUMP BODY AND BASE TO GEAR HOUSING (2 11/16")
3	16-8M0034453	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (2 3/16")
4	31-62091T	BEARING, ROLLER - DRIVE SHAFT
5	92815	PLATE, SUPPORT - EXHAUST TUBE SEAL
6	37721001	SEAL, EXHAUST TUBE
7	43-46373	GEAR, PINION - DRIVE SHAFT SPIRAL
8	10-20925	SCREW, PINION GEAR TO DRIVE SHAFT
9	14-29163	TAB WASHER, PINION GEAR SCREW
10	11-30932	NUT, PINION GEAR TO DRIVE SHAFT
11	27-32771	GASKET, WATER PUMP BASE TO GEAR HOUSING
12	25-26855	"O" RING, WATER PUMP BASE
13	46-77516A1	WATER PUMP BASE ASSEMBLY (PLASTIC)
14	26-79831	OIL SEAL, WATER PUMP BASE
15	26-90562	OIL SEAL, WATER PUMP BASE
16	17-35973	DOWEL PIN, WATER PUMP BASE TO WATER PUMP BODY
17	27-19553	GASKET, LOWER - WATER PUMP BASE TO FACE PLATE
18	32768	PLATE, FACE - WATER PUMP BASE TO WATER PUMP BODY
19	27-19551	GASKET, UPPER - FACE PLATE TO WATER PUMP BODY
20	47-89983T	IMPELLER, WATER PUMP
21	28-8M0032837	PIN, IMPELLER DRIVE
22	46-77822A1	WATER PUMP BODY ASSEMBLY (PLASTIC)
23	48753	INSERT,WATER PUMP BODY (PLASTIC)
24	26-32121	OIL SEAL, WATER PUMP BODY
25	12-8M0204649	WASHER, WATER PUMP BODY AND BASE STUDS
26	11-826709109	NUT, WATER PUMP BODY AND BASE STUDS
27	26-38452	SEAL, WATER PUMP BODY TO WATER TUBE
28	12-38453	WASHER, CUPPED - WATER TUBE SEAL
29	25-20273	RING, RUBBER - CENTRIFUGAL SLINGER
30	25-29619	"O" RING, UPPER - DRIVE SHAFT
31	10-79953Q04	SCREW, GREASE FILLER AND VENT HOLE
32	12-191833	WASHER, GREASE FILLER AND VENT HOLE SCREW
33	10-29608	SCREW, GEAR HOUSING FLUSHING HOLE ALUMINUM
34	27-8M0214916	GASKET, GEAR HOUSING FLUSHING HOLE SCREW
35	26-8M0214917	SEAL, GEAR HOUSING FLUSHING HOLE SCREW
36	19-48750	PLUG, GEAR HOUSING FLUSHING HOLE PLASTIC
37	12-8M0204663	WASHER, GEAR HOUSING FLUSHING HOLE
38	55420A1	SHAFT, SHIFT - LOWER
39	53-29641	CLIP, RETAINING - SHIFT SHAFT
40	25-25439	"O" RING, SHIFT SHAFT BUSHING
41	23-77631A2	BUSHING ASSEMBLY, SHIFT SHAFT
42	26-24590	OIL SEAL, SHIFT SHAFT BUSHING (LOWER)
43	26-892361	OIL SEAL, SHIFT SHAFT BUSHING (UPPER)
44	12-31266	WASHER, RUBBER - SHIFT SHAFT BUSHING
45	78036	BASE, LOWER - REVERSE LOCKING
46	43308T1	CAM, REVERSE LOCKING
47	45-53571A1	DRIVE SHAFT ASSEMBLY (LONG SHAFT)
48	24-20254	SPRING, COMPRESSION - DRIVE SHAFT
49	17-30545	PIN, DRIVE SHAFT
50	23-52709	SLEEVE LUBRICATION - DRIVE SHAFT
51	15-20929A1	SHIM, BEARING TO GEAR HOUSING (.002-3-5-10)
52	30-72961	BEARING, BALL - DRIVE SHAFT STRAIGHT
53	53-29116	RING, SNAP - BALL BEARING RETAINING
54	15-20929A1	SHIM, BEARING TO WATER PUMP BASE (.002-3-5-10)
55	31-38146A1	ROLLER BEARING ASSEMBLY, TAPERED - DRIVE SHAFT (SPIRAL)

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (34 parts)

Ref	OEM Part #	Part Name
-	1626-3927A8	GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT)
1	1626-3927A6	GEAR HOUSING ASS'Y (PLASTIC WATER PUMP AND SPIRAL GEARS)
56	760394	CAM, SHIFT
57	38441	FOLLOWER, CAM
58	20843	SLIDE, CROSS PIN
59	24-39845	SPRING, COMPRESSION - CAM FOLLOWER
60	15-38374A1	SHIM, BEARING CUP TO GEAR HOUSING (.002-3-5-10)-SPIRAL
61	31-20249	BEARING, ROLLER - FORWARD GEAR
63	43-46372A2	FORWARD GEAR ASSEMBLY (SPIRAL)
64	52-92911T	RATCHET, SLIDING HUTCH
65	17-8M0020942	PIN, CROSS - RATCHET TO PROPELLER SHAFT
66	24-38114	SPRING, RETAINING - CROSS PIN
67	44-38127	SHAFT, PROPELLER
68	43-46374	REVERSE GEAR ASSEMBLY (SPIRAL)
69	15-20927A1	SHIM, THRUST WASHER TO GEAR HOUSING (.002-3-5-10)
70	12-32004	WASHER, THRUST - REVERSE GEAR
71	30-20839T	BEARING, BALL - REVERSE GEAR
72	25-31986	"O" RING, BEARING CARRIER
73	53014T1	BEARING CARIER ASSEMBLY
74	31-20249	BEARING, ROLLER - BEARING CARRIER
75	26-23517	OIL SEAL, BEARING CARRIER
76	28-30281	KEY LOCATING - BEARING CARRIER
77	14-53012	TAB WASHER, GEAR HOUSING COVER
78	11-87763	COVER, GEAR HOUSING
79	97-31640Q4	TRIM TAB ASSEMBLY, GEAR HOUSING
80	10-32470	SCREW, TRIM TAB TO GEAR HOUSING (1 3/4")
81	12-8M0214963	WAHER, DRIVE SHAFT HOUSING STUD (3/8")
82	11-8M0204726	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING (3/8")
83	12-45176	WASHER, DRIVE SHAFT HOUSING STUD (7/16")
84	11-8M0204653	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING
85	38859A1	THRUST HUB AND WASHER ASSEMBLY
86	12-31992	WASHER, CUPPED - THURST HUB
87	12-32007	WASHER, SPLINED - PROPELLER SHAFT
88	11-82671120	NUT, PROPELLER

▶IGNITION DRIVER AND PILOT ASSEMBLY (62 parts)

Ref	OEM Part #	Part Name
--	23-29909	SPACER, DRIVEN PULLEY
1	333-4674A3	IGNITION DRIVER ASSEMBLY, COMPLETE (SEE PAGE 7 FOR BREAKDOWN
2	45-27951	SHAFT, IGNITION DRIVER
3	47883A1	PILOT ASSEMBLY, IGNITION DRIVER
4	10-96138	SCREW, ADAPTOR AND PILOT TO IGNITION DRIVER (5/8")
5	30-20066	BALL BEARING, IGNITION DRIVER PILOT
6	24-27944	SPRING, HORSESHOE - IGNITION DRIVER PILOT
7	17-27962	PIN, ANCHOR - HORSESHOE SPRING TO PILOT
8	12-8M0204649	WASHER, HORSESHOE SPRING TO ANCHOR PIN
9	48103A1	ECONOMIZER COLLAR AND PIN ASSEMBLY
10	17-27961	PIN, ECONOMIZER COLLAR - SPRING RETAINER
11	22-25094	FITTING, GREASE - ECONOMIZER COLLAR
12	66778T	PLATE, THROTTLE ACTUATOR
13	10-46420	SCREW, THROTTLE ACTUATOR TO ECONOMIZER COLLAR (1/2")
14	10-23015	SCREW, ADJUSTING - THROTTLE ACTUATOR (1")
15	11-68219	NUT, THROTTLE ACTUATOR ADJUSTING SCREW
16	48039	CAP, THROTTLE ACTUATOR ADJUSTING SCREW
17	12-46246	WASHER, IGNITION DRIVER PILOT TO ADAPTOR
18	66856A1	ADAPTOR, IGNITION DRIVER
19	10-78841	SCREW, ADAPTOR AND PILOT TO CRANKCASE (1 1/2")
20	12-20084	WASHER, ADAPTOR AND PILOT TO CRANKCASE SCREW
21	11-22053	NUT, ADAPTOR AND PILOT TO CRANKCASE SCREW
22	22-25094	FITTING, GREASE - IGNITION DRIVER ADAPTOR
23	12-27939	WASHER, IGNITION DRIVER PILOT
24	14-27960	TAB WASHER, ADAPTOR CAP FASTENING
25	13-27959	WASHER, WAVE - IGNITION DRIVER BALL BEARING TENSION
26	27955	CAP, IGNITION DRIVER ADAPTOR AND PILOT FASTENING
27	28-28657	KEY, IGNITION DRIVER
28	29784	HUB, DRIVEN PULLEY
29	29783A1	DRIVEN PULLEY ASSEMBLY
30	17-24873	PIN, ROLL - FLANGE
31	29785	FLANGE, DRIVEN PULLEY
32	12-20138	WASHER, PULLEY SCREW
33	10-64652	SCREW, PULLEY (5/8")
34	20140	BELT, TIMING
35	53458	PLATE, THROTTLE STOP (SERIAL #2623520 AND UP)
36	23-48456	SPACER, THROTTLE STOP PLATE TO ADAPTOR
37	10-28668	SCREW, THROTTLE STOP PLATE TO ADAPTOR (7/8")
38	10-24933	SCREW, THROTTLE STOP ADJUSTING (1 1/2")
39	11-20013	NUT, THROTTLE STOP ADJUSTING SCREW
40	26852	CAP, NYLON - ADJUSTING SCREW
41	27947	SWIVEL, LINKAGE - ECONOMIZER COLLAR
42	25996A1	SWIVEL AND LINK ROD ASSEMBLY
43	11-25168	NUT, UPPER LINK ROD ADJUSTING
44	37700	ROD, LINK - UPPER
45	27948	SWIVEL, UPPER LINK ROD TO THROTTLE CONTROL LEVER
46	53143A2	LEVER, THROTTLE CONTROL
47	23-45818	BUSHING, THROTTLE LEVER SCREW
48	10-47273	SCREW, THROTTLE LEVER TO EXHAUST COVER (1 1/2")
49	12-8M0042641	WASHER, THROTTLE LEVER SCREW
50	24-37934	SPRING, QUICK DISCONNECT - THROTTLE CABLE TO THROTTLE LEVER
51	10-38069	SCREW, ANCHOR - QUICK DISCONNECT SPRING TO THROTTLE LEVER
52	39483	LATCH, THROTTLE CONTROL LEVER (THROTTLE CABLE)
53	10-69026	SCREW, LATCH TO THROTTLE CONTROL LEVER (7/8")
54	24-20099	SPRING, COMPRESSION - LATCH SCREW
55	11-826709109	NUT, LATCH SCREW
56	12-8M0204649	WASHER, UPPER SWIVEL TO THROTTLE LEVER
57	11-826709109	NUT, UPPER SWIVEL TO THROTTLE LEVER
58	33-896329827	SPARK PLUG (CHAMPION - L19V)
59	45391	SPACER, IGNITION WIRE
60	53-78201	BRACKET, TAB - CRANKCASE SCREW - IGNITION DRIVER GROUND STRA
61	10-62568	SCREW, IGNITION DRIVER GROUND STRAP TO TAB BRACKET (3/8")

▶IGNITION DRIVER ASSEMBLY, COMPLETE (39 parts)

Ref	OEM Part #	Part Name
-	333-4674A3	IGNITION DRIVER ASSEMBLY, COMPLETE
--	85-94589	SLEEVE, SPARK PLUG LEAD TO IGNITION DRIVER
1	333-4674A3	HOUSING, IGNITION DRIVER
2	10-47183	SCREW, SET - COIL ASSEMBLY FASTENING
3	333-3172A1	TERMINAL BOARD ASSEMBLY, IGNITION DRIVER
4	10-47182	SCREW, TERMINAL BOARD ASSEMBLY FASTENING (1/2")
5	333-3175	COIL ASSEMBLY, IGNITION DRIVER (RED)
6	333-3176	COIL ASSEMBLY, IGNITION DRIVER (BLUE)
7	333-3173	HARNESS, PRIMARY CABLE - IGNITION DRIVER
8	54-47188	CLAMP, PRIMARY HARNESS CABLE - IGNITION DRIVER
9	10-28259	SCREW, PRIMARY HARNESS CABLE CLAMP FASTENING (5/8")
10	30-24998	BEARING, BALL - DRIVER END (1 3/8" O.D.)
11	333-4674A3	SHAFT ASSEMBLY, IGNITION DRIVER
12	30-49090	BEARING, BALL - IGNITION DRIVER END (1 1/4" O.D.)
13	333-3166	CAP, BEARING - IGNITION DRIVER HOUSING
14	10-37656	SCREW, BEARING CAP FASTENING (8=9/16")
15	333-3143	ROTOR ASSEMBLY, IGNITION DRIVER
16	54-47187	SPRING CLIP - IGNITION DRIVER ROTOR
17	27-61031	GASKET, IGNITION DRIVER COVER
18	333-4639A1	COVER, IGNITION DRIVER
19	10-20189	SCREW, IGNITION DRIVER COVER FASTENING (3/4")
20	14-29157	TAB WASHER, IGNITION DRIVER COVER FASTENING SCREW
21	22-31521	ELBOW, VETN - IGNITION DRIVER COVER
22	333-3142A3	CAP ASSEMBLY, IGNITION DRIVER
23	333-3165A1	BRUSH AND SPRING ASSEMBLY
24	27-47190	GASKET, IGNITION DRIVER CAP
25	394-1134A2	GROUND STRAP ASSEMBLY
26	10-73013	SCREW, IGNITION DRIVER CAP FASTENING (1 1/2")
27	14-29157	TAB WASHER, IGNITION DRIVER CAP FASTENING SCREW
28	84-821945A8	LEAD ASSEMBLY, HIGH TENSION - IGNITION DRIVER TO COIL
29	25-26547	GROMMET, COIL WIRE BRACKET
30	332-2854T01	BOOT, HIGH TENSION LEAD CABLE
32	32-46768	SLEEVE, SPARK PLUG LEAD (6")
33	32-46768	SLEEVE, SPARK PLUG LEAD (1 1/2")
34	85-63709A1	PROTECTOR ASSEMBLY, SPARK PLUG LEADS
35	32-46398	SLEEVE, HIGH TENSION CABLE (3/4")
36	54-22740	CLIP, IGNITION DRIVER LEAD
37	10-25764	SCREW, IGNITION DRIVE LEAD TO SWITCH BOX (1/2")
38	8M0084613	"D" WASHER, IGNITION DRIVER LEAD SCREW

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
-	79-73370A3	TACHOMETER ASSEMBLY

▶OVERSIZE PISTON AND RING (1 parts)

Ref	OEM Part #	Part Name
--	39-28616A12	RING, PISTON (.015 OVERSIZE)

▶STARTER MOTOR, STARTER SOLENOID, RECTIFIER AND WIRING HARNES (62 parts)

Ref	OEM Part #	Part Name
--	11-20890	NUT, GROUND WIRE SCREW
1	333-3213A3	SWITCH BOX ASSEMBLY, COMPLETE
1A	332-2986A27	SWITCH BOX ASSEMBLY, COMPLETE
2	12-45075	WASHER, SWITCH BOX TERMINAL
3	11-45076	NUT, SWITCH BOX TERMINAL
4	10-22485	SCREW, SWITCH BOX TO FRONT SUPPORT BRACKET (3/4")
5	13-22773	LOCKWASHER, SWITCH BOX FASTENING SCREW
6	11-8M0207775	NUT, SWITCH BOX TO FRONT SUPPORT BRACKET SCREW
7	78614A1	RECTIFIER ASSEMBLY, COMPLETE USE THRU SERIAL #2406034
8	12-45075	WASHER, RECTIFIER TERMINAL
9	11-45076	NUT, RECTIFIER TERMINAL
10	10-22485	SCREW, RECTIFIER TO FRONT SUPPORT BRACKET (3/4")
11	11-8M0207775	NUT, RECTIFIER TO FRONT SUPPORT BRACKET SCREW
12	8M0058226	RECTIFIER STARTED WITH SERIAL #2406035
13	13-8M0204647	LOCKWASHER, RECTIFIER TO FRONT BRACKET
14	11-20922	NUT, RECITIFIER TO FRONT BRACKET
15	23-28458	SPACER, RECTIFIER TO FRONT BRACKET
16	10-35400	SCREW, RECTIFIER TERMINALS
17	11-8M0204718	NUT, RECTIFIER TERMINALS
18	32-28373	SLEEVE, RECTIFIER TERMINALS
19	59757	BRACKET, RETAINER - HIGH TENSION LEAD
20	10-21722	SCREW, RETAINER BRACKET TO FRONT SUPPORT BRACKET (5/8")
21	23-33070	SPACER, RETAINER BRACKET TO FRONT SUPPORT BRACKET
22	11-8M0207775	NUT, RETAINER BRACKET SCREW
23	50-55601A2	STARTER MOTOR ASSEMBLY
24	10-22698	SCREW, STARTER MOTOR TO CRANKCASE FLANGE (1 3/4")
25	13-8M0204647	LOCKWASHER, STARTER MOTOR SCREW
26	84-93389A12	WIRE, STARTER MOTOR TO STARTER SOLENOID AND TOP MOUNT
27	10-69035	SCREW, GROUND WIRE TO STARTER MOTOR (5/8")
28	13-26992	LOCKWASHER, GROUND WIRE FASTENING SCREW
29	32445A1	STARTER SOLENOID
30	10,13-26996	LOCKWASHER, SOLENOID TERMINAL
31	10,11-68219	NUT, SOLENOID TERMINAL
32	13-8M0204647	LOCKWASHER, SOLENOID TERMINAL (5/16")
33	11-22053	NUT, SOLENOID TERMINAL - INSIDE (5/16")
34	11-26062	NUT, CAP - SOLENOID TERMINAL - OUTSIDE (5/16")
35	10-29238	SCREW, STARTER SOLENOID TO STARTER MOTOR (5/8")
36	46715	GROUND STRAP ASSEMBLY
37	52770A1	WIRING HARNESS (INTERNAL)
38	24-28975	SPRING, GARTER - INTERNAL WIRING HARNESS
39	26079A2	PLATE, BACKING - WIRING HARNESS
40	10-45893	SCREW, BACKING PLATE TO BOTTOM COWL
41	54-76368	CLAMP, WIRING HARNESS
42	10-45862	SCREW, WIRING HARNESS CLAMP TO BOTTOM COWL (7/8")
43	13-26996	LOCKWASHER, WIRING HARNESS CLAMP SCREW
44	12-847883	WASHER, WIRING HARNESS CLAMP SCREW
45	54-26550	CLIP, WIRING HARNESS LEAD
46	10-29072	SCREW, WIRING HARNESS LEAD CLIP ATTACHING (5/8"0
47	8M0084613	"D" WASHER, WIRING HARNESS LEAD CLIP ATTACHING SCREW
48	11-24656	NUT, WIRING HARNESS LEAD CLIP ATTACHING SCREW
49	10-98256	SCREW, WIRING HARNESS LEAD TO BOTTOM COWL (1/2")
50	13-25244	LOCKWASHER, WIRING HARNESS LEAD SCREW
51	332-4895A6	IGNITION COIL ASSEMBLY, COMPLETE
52	10-46367	SCREW, IGNITION COIL CLAMPING - CLIP ATTACHING (2 1/2")
53	11-68219	NUT, IGNITION COIL CLAMPING SCREW
54	12-8M0204666	WASHER, IGNITION COIL CLAMPING SCREW
55	54-22740	CLIP, LEAD WIRE TO IGNITION COIL
56	8M0084613	"D" WASHER, IGNITION COIL CLAMPING SCREW
57	11-8267086	NUT, IGNITION COIL CLAMPING SCREW
58	10-45218	SCREW, IGNITION COIL WIRE TO SWITCH BOX
59	10-36137	SCREW, IGNITION COIL TO BOTTOM COWL (1")
60	13-26992	LOCKWASHER, IGNITION COIL SCREW

▶TOP COWL ASSEMBLY (63 parts)

Ref	OEM Part #	Part Name
1	2117-4068A1	TOP COWL
2	37690	SHIELD, REAR - TOP COWL
3	10-37370	SCREW, REAR SHIELD TO TOP COWL
4	13-37371	LOCKWASHER, REAR SHIELD SCREW
5	25-20116	GROMMET, CHOKE KNOB
6	46142A1	RETAINER ASSEMBLY, TOP COWL
7	37-61018A1	EMBLEM, TOP COWL RETAINER
8	35496	PAD, BUMPER - TOP COWL RETAINER
9	10-35386	SCREW, RETAINER TO TOP COWL (1")
10	13-39107	LOCKWASHER, RETAINER TO TOP COWL SCREW
11	46144	BRACKET, TOP COWL LATCH
12	10-21091	SCREW, LATCH BRACKET TO TOP COWL (1 1/8")
13	12-8M0204649	WASHER, LATCH BRACKET SCREW (1/16" THICK)
14	12-37998	WASHER, LATCH BRACKET SCREW (1/32" THICK)
15	52899	BRACKET, REAR COWL SUPPORT
16	25-52723	GROMMET, LIMIT STOP - REAR COWL SUPPORT BRACKET
17	37640	MOUNT, RUBBER - REAR SUPPORT BRACKET
18	13-8M0204647	LOCKWASHER, REAR SUPPORT BRACKET RUBBER MOUNT
19	12-26825	WASHER, REAR SUPPORT BRACKET RUBBER MOUNT
20	11-22053	NUT, REAR SUPPORT BRACKET RUBBER MOUNT
21	37412	LEVER, CLAMPING - TOP COWL
22	23-26819	BUSHING, TOP COWL CLAMPING LEVER (NYLON)
23	23-31293	BUSHING, TOP COWL CLAMPING LEVER (RUBBER)
24	11-30428	FASTENER, TOP COWL CLAMPING LEVER
25	17-29077	PIN, ROLL - TOP COWL CLAMPING LEVER
26	11-20166	NUT, SHEAVE SHAFT (LEFT HAND THREAD)
27	14-20165	TAB WASHER, SHEAVE SHAFT NUT
28	37685	HOUSING, STARTER
29	10-90073	SCREW, STARTER HOUSING TO CRANKCASE AND CYLINDER BLOCK (1")
30	13-20202	LOCKWASHER, STARTER HOUSING SCREW
31	37691	PLATE, CABLE GUIDE
32	10-358811	SCREW, DRIVE - CABLE GUIDE PLATE TO STARTER HOUSING
33	39835	RETAINER, STARTER SPRING
34	24-39502T02	SPRING, STARTER REWIND
35	23-28912	BUSHING, SPRING GUIDE
36	76053A1	SHEAVE ASSEMBLY
37	30596	PAWL, STARTER
38	13-36206	WASHER, WAVE - STARTER PAWL
39	23-28919	BUSHING, NYLON - SHEAVE SHAFT SPACER
40	23-61005	SPACER, SHEAVE SHAFT
41	39840	RETAINER, WAVE WASHER
42	12-35559	WASHER, WAVE WASHER RETAINER
43	13-20160	WASHER, WAVE - RETAINER TENSION
44	24-26068	SPRING, RETAINER PLATE TO STARTER SHEAVE
45	66845	PLATE, RETAINER - STARTER PAWL
46	45477A1	SHAFT, SHEAVE
47	47341A11	STARTER CABLE (FORM MANUAL STARTING ONLY)
48	28747	HANDLE, STARTER CABLE
49	79470A1	RETAINER, STARTER CABLE AND HANDLE
50	47904A2	BRACKET ASSEMBLY, FRONT SUPPORT
51	37-46397	DECAL, TIMING - FRONT SUPPORT BRACKET
52	37921	FLANGE, RUBBER - FRONT SUPPORT BRACKET
53	32-8M0108355	TUBE, DRAIN - FRONT SUPPORT BRACKET TO BOTTOM COWL
54	10-35386	SCREW, FRONT SUPPORT BRACKET TO BOTTOM COWL (1")
55	54-24836	CLIP, SOLENOID LEAD AND HARNESS TO FRONT SUPPORT BRACKET
56	10-69079	SCREW, CHOKE SOLENOID CLIP ATTACHING (7/16")
57	8M0084613	"D" WASHER, CHOKE SOLENOID CLIP SCREW
58	31014	MOUNT, RUBBER - FRONT SUPPORT BRACKET
59	13-26992	LOCKWASHER, FRONT SUPPORT BRACKET RUBBER MOUNT
60	12-69057	WASHER, FRONT SUPPORT BRACKET RUBBER MOUNT
61	11-20088	NUT, FRONT SUPPORT BRACKET RUBBER MOUNT
62	58124A8	SWITCH ASSEMBLY, MERCURY LATER MODELS
63	10-48409	SCREW, MERCURY SWITCH TO EXHAUST MANIFOLD COVER

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 500 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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