Mercury 40 (1 CYL.) (3306257 THRU 8026539) Parts & Diagrams

🔎 Mercury 40 (1 CYL.) Reference Library — Exploded parts diagrams (18 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 40 (1 CYL.) 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	40 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)	700 ± 50 RPM (in gear)
Full Throttle RPM Range	5500-6000
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 40 (1 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 40 (1 CYL.).

▶BOTTOM COWL ASSEMBLY (19 parts)

Ref	OEM Part #	Part Name
1	187-7711A4	BOTTOM COWL Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
2	36187A1	LEVER ASSEMBLY, CLAMPING - PORT
3	36188A1	LEVER ASSEMBLY, CLAMPING - STARBOARD
4	53-55891	FASTENER, CLAMPING LEVER
5	84-60871A7	GROUND STRAP ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
6	24-63399	SPRING, GROUND STRAP Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
7	23-26819	BUSHING, NYLON - CLAMPING LEVER
8	23-31293	BUSHING, RUBBER - CLAMPING LEVER
9	17-58997	PIN, ROLL - CLAMPING LEVER
10	10-79953Q04	SCREW, BOTTOM COWL FLUSHING HOLE
11	12-191833	WASHER, BOTTOM COWL FLUSHING HOLE SCREW
12	56712	NOZZLE, TELL TALE
13	10-35519	SCREW, TELL TALE NOZZLE TO BOTTOM COWL
14	32-8M0108355	TUBE, TELL TALE (7 1/4")
15	22-996642	ELBOW, TELL TALE - HOSE TO CYLINDER BLOCK
16	27-89937	GASKET, POWERHEAD TO BOTTOM COWL
17	27-55847	GASKET, EXHAUST RELEIF COVER TO BOTTOM COWL
18	55936	COVER, EXHAUST RELIEF
19	10-69079	SCREW, EXHAUST RELEIF COVER TO BOTTOM COWL (7/16")

▶CARBURETOR ASSEMBLY (23 parts)

Ref	OEM Part #	Part Name
--	1395-92621	REPAIR PARTS KIT
1	1341-8740A1	CARBURETOR ASSEMBLY, COMPLETE (KB-10A)
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
19	1395-6027	SCREW, THROTTLE STOP LEVER
20	8146791	LEVER, THROTTLE STOP
21	1399-1716	SHAFT, THROTTLE
25	1399-3739	SHUTTER, THROTTLE
28	10-28845	SCREW, PLUG - BODY CHANNEL
30	10-23178	SCREW, PLUG - MAIN NOZZLE
31	1399-3252	JET, MAIN FUEL (.032)
34	10-28405	SCREW, PLUG - MAIN FUEL JET CHANNEL
35	1399-3740	SCREW, IDLE ADJUSTMENT
37	27-63309	GASKET, CARBURETOR TO REED BLOCK
38	12-20583	WASHER, CARBURETOR MOUNTING STUD
39	11-24652	NUT, CARBURETOR MOUNTING STUD

▶CARBURETOR CHOKE LINKAGE (9 parts)

Ref	OEM Part #	Part Name
1	59000	THROTTLE LEVER ASSEMBLY
2	10-20597	SCREW, THROTTLE LEVER TO CARBURETOR (3/8")
3	79092	SHUTTER AND SCREEN, CHOKE - CARBURETOR
4	24-53193	SPRING, CHOKE SHUTTER TO LEVER
5	24-55299A1	SPRING ASSEMBLY, CARBURETOR
6	10-55298	SCREW, SPRING TO CARBURETOR
7	53187	LEVER, CHOKE
8	24-53190	SPRING, TENSION - CHOKE KNOB
9	53189	KNOB, CHOKE

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (SERIAL GROUP #1) (56 parts)

Ref	OEM Part #	Part Name
1	1468-5570A3	CLAMP BRACKET ASSEMBLY (PORT)
2	1467-5571A3	CLAMP BRACKET ASSEMBLY (STARBOARD)
3	59170A3	THUMB SCREW ASSEMBLY
4	12-26227	WASHER, THUMB SCREW
5	12-52864	WASHER, TILT TUBE - CLAMP TO SWIVEL BRACKET
6	45757	TITL TUBE, CLAMP TO SWIVEL BRACKET
7	54-8M0085928	CLIP, SAFETY CHAIN - TITE TUBE
8	11-858869	NUT, TILT TUBE FASTENING
9	16-59622	STUD, CLAMP BRACKET
10	13-26992	LOCKWASHER, CLAMP BRACKET STUD
11	11-29598	NUT, CLAMP BRACKET STUD
12	24-62143	SPRING, TILT LOCK PIN
13	17-55952A1	TILT LOCK PIN ASSEMBLY
14	10-67982	BOLT, CLAMP BRACKET TO BOAT
15	12-67983	WASHER, CLAMP BRACKET SCREW
16	11-8267098	NUT, CLAMP BRACKET SCREW
17	1451-4675	SWIVEL BRACKET
18	25-25439	"O" RING, SWIVEL BRACKET
19	38-31042	SERIAL PLATE
20	10-28642	SCREW, DRIVE - SERIAL PLATE TO SWIVEL BRACKET
21	19-77633Q	LUBRICAP, GREASE FITTING - SWIVEL BRACKET
22	22-8M0169589	FITTING, GREASE - SWIVEL BRACKET
23	23-30813	SPACER, TUBE - REVERSE LOCK ROD
24	23-26856	BUSHING, NYLON - REVERSE LOCK LEVER ROD
25	56663	ROD, REVERSE LOCK TO SWIVEL BRACKET
26	18-56206	COTTER PIN, RECERSE LOCK LEVER TO ROD
27	30815	LINK, REVERSE LOCK LEVER
28	53267A1	REVERSE LOCK LEVER ASSEMBLY
29	53435	BRACKET, STOP
30	24-53456	SPRING, EXTENSION - STOP BRACKET
31	24-30886	SPRING, TENSION - REVERSE LOCK LEVER
32	62257A2	LINK ASSEMBLY, REVERSE LEVER
33	62256	ROD, LINK - REVERSE LOCK LEVER
34	10-60355	SCREW, LINK TO SWIVEL BRACKET
35	13-34632	WASHER, WAVE - LINK SCREW
36	17-25905	ROLL PIN, RELEASE LINK
37	17-30688	SWIVEL PIN, SWIVEL BRACKET TO SADDLE
38	77334	CO-PILOT DISC
39	10-30679	SCREW, CO-PILOT DISC TO SADDLE
40	11-8M0207775	NUT, CO-PILOT DISC FASTENING SCREW
41	62342	DISC, FRICTION - CLAMP PLATE AND SWIVEL BRACKET (THIN)
42	20203	DISC, FRICTION - CLAMP PLATE AND SWIVEL BRACKET (THICK)
43	61296	PLATE, CLAMP - CO-PILOT
44	10-62506	SCREW, CLAMP PLATE ADJUSTING Comment: . FOR REPLACEMENT OF SCREW AND COTTER PIN USED ON EARLY MODELS IN THIS APPLICATION, ORDER C-10-62506 SCREW AND C-11-62505 NUT.
45	11-62505	NUT, CAMPL PLATE ADJUSTING SCREW Comment: . FOR REPLACEMENT OF SCREW AND COTTER PIN USED ON EARLY MODELS IN THIS APPLICATION, ORDER C-10-62506 SCREW AND C-11-62505 NUT.
47	12-35462	WSHER, CLAMP PLATE ADJJUSTING SCREW
48	13-48239	WASHER, WAVE - CLAMP PLATE ADJUSTING SCREW
49	62024T	LEVER, CONTROL - REVERSE LOCK
50	23-59573	SPACER, CLAMP PLATE ADJUSTING SCREW
51	61602	PLATE, LOCKING - CLAMP PLATE ADJUSTING SCREW
52	63310A1	LEVER, TITLE STOP
53	10-29237	SCREW, RETAINING - TILT STOP LEVER
54	11-8M0207775	NUT, TILT STOP LEVER RETAINING SCREW
55	10-27791	SCREW, ANCHOR - TILT STOP LEVER
56	13-20846	WASHER, WAVE - LEVER ANCHOR SCREW
57	11-8M0207775	NUT, TILT STOP LEVER ANCHOR SCREW

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (SERIAL GROUP #2) (44 parts)

Ref	OEM Part #	Part Name
1	1468-5570A3	CLAMP BRACKET ASSEMBLY (PORT)
2	1467-5571A3	CLAMP BRACKET ASSEMBLY (STARBOARD)
3	59170A3	THUMB SCREW ASSEMBLY
4	12-26227	WASHER, THUMB SCREW
5	12-52864	WASHER, TILT TUBE - CLAMP TO SWIVEL BRACKET
6	45757	TILT TUBE, CLAMP TO SWIVEL BRACKET
7	54-8M0085928	CLIP, SAFETY CHAIN - TILT TUBE
8	11-858869	NUT, TILT TUBE FASTENING
9	16-59622	STUD, CLAMP BRACKET
10	13-26992	LOCKWASHER, CLAMP BRACKET STUD
11	11-29598	NUT, CLAMP BRACKET STUD
12	24-62143	SPRING, TILT LOCK PIN
13	17-55952A1	TILT LOCK PIN ASSEMBLY
14	10-67982	BOLT, CLAMP BRACKET TO BOAT
15	12-67983	WASHER, CLAMP BRACKET SCREW
16	11-8267098	NUT, CLAMP BRACKET SCREW
17	1471-5822A1	SWIVEL BRACKET ASSEMBLY Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
18	19-77633Q	LUBRICAP, GREASE FITTING - SWIVEL BRACKET Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
19	22-8M0169589	FITTING, GREASE - SWIVEL BRACKET Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
20	23-64028	BUSHING, SWIVEL BRACKET
21	23-26841	BUSHING, NYLON - REVERSE LOCK LEVER ROD
22	63551	ROD, REVERSE LOCK TO SWIVEL BRACKET
23	18-45882	COTTER PIN, RECERSE LOCK LEVER TO ROD
24	63628T	LEVER, REVERSE LOCK
25	61007	RETAINER, ROD - REVERSE LOCK
26	63559T	BRACKET, TROLL
27	24-63630	SPRING, EXTENSION - TROLL BRACKET
28	63554	GUIDE, SPRING
29	17-25319	ROLL PIN, SPRING GUIDE
30	79744	LEVER, CONTROL - TROLL BRACKET
31	13-63631	WASHER, WAVE - TROLL BRACKET LEVER
32	66559	SWIVEL PIN, SWIVEL BRACKET TO SADDLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
33	77334	CO-PILOT DISC
34	10-30679	SCREW, CO-PILOT DISC TO SADDLE (2 1/4")
35	11-8M0207775	NUT, CO-PILOT DISC FASTENING SCREW
36	20203	DISC, FRICTION - CLAMP PLATE AND SWIVEL BRACKET
37	63647	PLATE, CLAMP - CO-PILOT
38	10-62506	SCREW, CLAMP PLATE ADJUSTING (1 5/8")
39	12-35462	WASHER, CLAMP PLATE ADKJUSTING SCREW
40	63310A1	LEVER ASSEMBLY, TILT STOP
41	10-41433	SCREW, TILT STOP LEVER
42	13-31030	WASHER, WAVE - LEVER ANCHOR SCREW
43	11-826709109	NUT, TILT STOP LEVER SCREW
44	10-36398	SCREW, SWIVEL BRACKET (1/4")

▶CRANKSHAFT, PISTON AND CONNECTING ROD ASSEMBLY (12 parts)

Ref	OEM Part #	Part Name
1	427-3513	CRANKSHAFT
2	26-72793	CARRIER ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
3	26-72793	SEAL, CARRIER ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
4	608-7395A2	CONNECTING ROD ASSEMBLY
5	10-87374	SCREW, CONNECTINT ROD
6	29-26815	BEARING, NEEDLE - CRANKPIN
7	11-20061	NUT, CONNECTING ROD SCREW
8	12-65967	WASHER, NEEDLE BEARING RETAINING
9	29-31505	BEARING, NEEDLE - PISTON PIN
10	719-7391T3	PISTON AND PISTON PIN ASSEMBLY
11	40-21666	LOCK RING, PISTON PIN
12	39-21665A12	RING, PISTON

▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (45 parts)

Ref	OEM Part #	Part Name
1	843-8694A3	CYLINDER BLOCK AND CRANKCASE ASSEMBLY
2	16-66021	STUD, SYLINDER BLOCK AND CRANKCASE TO DRIVE SHAFT HOUSING
3	16-66020	STUD, CARBURETOR MOUNTING
4	17-8M0084726	PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK
5	21-64871A2	FITTING ASSEMBLY, BLEED DRAIN Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
6	21-42657A3	CHECK VALVE ASSEMBLY Comment: UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
7	32-9938779	HOSE, BLEED DRAIN (7 1/2")
8	54-56223	CLAMP, BLEED HOSE ATTACHING
9	22-78916	ELBOW, BLEED DRAIN
10	22-996642	ELBOW, 90 - 1/8' MALE (TELL TALE)
11	10-24624	SCREW, CRANKCASE TO CYLINDER BLOCK (1 3/4")
12	10-64278	SCREW, CRANKCASE TO CYLINDER BLOCK (1")
13	11-8M0207775	NUT, CRANKCASE FASTENING SCREW
14	70726	REED BLOCK
15	34-35836	REED, INLET VALVE
16	34-22215	RETAINER, REED
17	10-28430	SCREW, REED AND RETAINER TO BLOCK (1/4")
18	27-357391	GASKET, REED BLOCK TO CRANKCASE
19	30-72961	BEARING, BALL - CRANKCASE (LOWER)
20	26-56397	OIL SEAL, CRANKCASE (LOWER)
21	15-31412A1	SHIM ASSEMBLY, UPPER HOUSING TO BLOCK (.002-3-5-10)
22	1132-6352A1	BEARING HOUSING ASSEMBLY, UPPER
23	30-72961	BEARING, BALL - UPPER BEARING HOUSING
24	31-31410	BEARING, ROLLER - UPPER BEARING HOUSING
25	26-31411	OIL SEAL, UPPER BEARING HOUSING
26	25-20863	"O" RING, UPPER BEARING HOUSING
27	54-34598	CLAMP, HOLD DOWN RING
28	10-36205	SCREW, HOLD DOWN RING CLAMP TO BEARING HOUSING (9/16")
29	24-34731	SPRING, HOLD DOWN RING CLAMP
30	10-39002	SCREW, UPPER BEARING HOUSING (#12-24 X 1/2)
31	35658	COVER, TRANSFER PORT
32	27-35657	GASKET, TRANSFER PORT COVER
33	10-20720	SCREW, TRANSFER PORT COVER TO CYLINDER BLOCK (5/8")
34	1016-7070A1	COVER ASSEMBLY, CYLINDER BLOCK Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
35	66019	MOUNT, RUBBER - COVER TO TOP COWL Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
36	13-20202	LOCKWASHER, RUBBER MOUNT Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
37	11-22053	NUT, RUBBER MOUNT TO COVER Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
38	27-416151	GASKET, COVER TO CYLINDER BLOCK
39	10-21091	SCREW, SYLINDER BLOCK COVER TO CYLINDER BLOCK (1 1/4")
40	11-8M0207775	NUT, CYLINDER BLOCK COVER MOUNTING SCREW
41	27-416141	GASKET, SYLINDER BLOCK TO BAFFLE PLATE
42	46234	PLATE, BAFFLET - EXHAUST MANIFOLD
43	27-416141	GASKET, BUFFLE PLATE TO EXHAUST MANIFOLD COVER
44	46171	COVER, EXHAUST MANIFOLD
45	10-49668	SCREW, PLATE/MANIFOLD COVER TO BLOCK (3/4") Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW

▶DRIVE SHAFT HOUSING ASSEMBLY (22 parts)

Ref	OEM Part #	Part Name
1	1542-8452A1	DRIVE SHAFT HOUSING ASSEMBLY(LONG SHAFT) Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
2	16-66373	STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING
3	11-82670911	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING STUD
4	11-8M0204726	NUT, GEAR HOUSING TO DRIVE SHAFT HOUSING STUD
5	1539-8450A1	SADDLE Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
6	64076	BUMPER, THRUST - SADDLE Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
7	79896A1	MOUNT ASSEMBLY, LOWER
8	79985A1	MOUNT ASSEMBLY, UPPER(SEE NOTE BELOW)
9	53-26406	RING, RETAINING - UPPER AND LOWER MOUNT
10	71490	COVER, UPPER AND LOWER MOUNT
11	10-45817	SCREW, UPPER AND LOWER MOUNT COVER RETAINING (7/16")
12	55435	BLOCK, BEARING - DRIVE SHAFT
13	27-59079	GASKET, BOTTOM COWL TO DRIVE SHAFT HOUSING
14	11-24652	NUT, DRIVE SHAFT HOUSING TO POWERHEAD STUDS
15	32-32077	TUBE, WATER OUTLET(LONG SHAFT)
16	26-36556	SEAL, RUBBER - WATER OUTLET TUBE
17	23-13127	WASHER, NYLON - OUTLET TUBE SEAL
18	71057	LINK ROD, REVERSE LOCK Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
19	10-65414	SCREW, CAM RETAINER TO DRIVE SHAFT HOUSING (3/4") Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
20	13-26992	LOCKWASHER, CAM RETAINER SCREW Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
21	65216	CAM, REVERSE LOCK Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
22	72007	RETAINER, REVERSE LOCK CAM Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW

▶FLYWHEEL AND IGNITION COIL (17 parts)

Ref	OEM Part #	Part Name
1	236-4475A1	FLYWHEEL ASSEMBLY
2	28-20094	KEY, FLYWHEEL DRIVE
3	25-62701	"O" RING, FLYWHEEL NUT
4	12-36245	WASHER, FLYWHEEL NUT
5	11-20696	NUT, FLYWHEEL
6	13-35629	WASHER, WAVE - CAM TENSION
7	336-4465	CAM, BREAKER
8	336-4528T2	COIL ASSEMBLY, IGNITION
9	13-26996	LOCKWASER, IGNITION COIL TERMINAL
10	11-45076	NUT, IGNITION COIL TERMINAL
11	66355	COVER, IGNITION COIL
12	10-61530	SCREW, COIL COVER TO REAR SUPPORT GRACKET (3 3/4")
13	11-27164	NUT, COIL COVER SCREW
14	84-813715A1	LEAD ASSEMBLY, HIGH TENSION
15	332-2854T01	NIPPLE, IGNITION COIL
16	85-63709A1	PROTECTOR ASSEMBLY, SPAR PLUG
17	33-896329833	SPARK PLUG (AC #40FFK)

▶FUEL PUMP AND FUEL LINE ASSEMBLY (19 parts)

Ref	OEM Part #	Part Name
1	89977A1	FUEL PUMP ASSEMBLY
2	21-30430A2	CHECK VALVE ASSEMBLY
3	53245A1	DIAPHRAGM KIT, FUEL PUMP
6	53241	BASE, FUEL PUMP
7	61541	COVER, FUEL PUMP
8	10-32627	SCREW, FUEL PUMP TO BASE (1 1/2")
9	12-847883	WASHER, FUEL PUMP SCREWS
10	22-61544	ELBOW, HOSE TO FUEL PUMP (45) Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
11	22-39079	ELBOW, FUEL PUMP TO CARBURETOR
12	32-9912688	HOSE ASSEMBLY, FUEL PUMP TO CYLINDER BLOCK (4 1/2")
13	22-33373001	ELBOW, HOSE TO CYLINDER BLOCK (90)
14	54-20387	CLAMP, FUEL PUMP HOSE TO ELBOWS
15	32-61642	FUEL LINE, INLET - ADAPTOR TO FUEL PUMP
16	30188	CUP WASHER, ADAPTOR
17	24-23067T	SPRING, ADAPTOR STEM
18	25-16524	"O" RING, ADAPTOR STEM
19	23069	STEM, CHECK UNIT ADAPTOR
20	22833	ADAPTOR, CHECK UNIT
21	10-37923	SCREW, CHECK UNIT ADAPTOR TO BOTTOM COWL (1 1/4")

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (45 parts)

Ref	OEM Part #	Part Name
-	23-86215	WASHER, NYLON - INTAKE TUBE SEAL
--	23-13127	WASHER, NYLON - WATER PUMP COVER
1	1630-4921A1	GEAR HOUSING ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
2	16-58138	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (3 1/2")
3	16-58136	STUD, WATER PUMP HOUSING TO GEAR HOUSING (2 3/4")
4	31-22756	BEARING, ROLLER - DRIVE SHAFT
5	17-20032	PIN, DOWEL - LOCATING
6	26-33613	SEAL, RUBBER - WATER INTAKE TUBE
7	35-33425	SCREEN WATER INTAKE
8	10-28642	SCREW, WATER INTAKE SCREEN TO GEAR HOUSING
9	12-191833	WASHER, GREASE FILLER HOLE SCREW
10	10-79953Q04	SCREW, GREASE FILLER HOLE
11	19643	WASHER, GREASE VENT HOLE SCREW
12	10-28653	SCREW, GREASE VENT HOLE
13	71658A1	SHAFT ASSEMBLY, SHIFT(LONG SHAFT) Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
14	53-22899	RING, RETAINING - SHIFT SHAFT
15	23-30676A1	BUSHING ASSEMBLY, SHIFT SHAFT
16	25-26802	"O" RING, SHIFT SHAFT BUSING
17	26-30696	OIL SEAL, SHIFT SHAFT BUSHING
18	10-39149	SCREW, SHIFT SHAFT BUSING RETAINER (1/2")
19	43-98696	GEAR, PINION
20	14-30377	TAB WASHER, PINION GEAR SCREW
21	10-30376	SCREW, PINION GEAR TO DRIVE SHAFT (3?4")
22	45-75033A1	DRIVE SHAFT(LONG SHAFT) Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
23	15-30527A1	SHIM ASSEMBLY, BALL BEARING TO GEAR HOUSING (.002-3-5-10)
24	30-33076	BEARING, BALL - DRIVE SHAFT
25	53-30523	RING, RETAINING - BALL BEARING
26	15-30527A1	SHIM ASSEMBLY, BALL BEARING TO PUMP HOUSING (.002-3-5-10)
27	46-46893A3	WATER PUMP HOUSING ASSEMBLY
28	25-29439	"O" RING, WATER PUMP HOUSING
29	26-30900T	OIL SEAL, WATER PUMP HOUSING
30	26-33613	SEAL, WATER INTAKE TUBE
31	32-34293	TUBE, WATER INTAKE
32	70977T	INSERT, WATER PUMP HOUSING
33	28-8M0032835	KEY, IMPELLER DRIVE
34	47-89981	IMPELLER, WATER PUMP
35	46895	PLATE, FACE - WATER PUMP HOUSING TO COVER
36	93224A1	WATER PUMP COVER ASSEMBLY
37	26-36558	SEAL, WATER PUMP COVER
38	26-30913	OIL SEAL, WATER PUMP COVER
39	12-20533	WASHER, WATER PUMP HOUSING AND COVER STUD
40	11-826709109	NUT, WATER PUMP HOUSING STUD
41	25-30526	RING, RUBBER - CENTRIFUGAL SLINGER
42	25-48171	"O" RING, UPPER - DRIVE SHAFT Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
43	23-31792T	SLEEVE, GUIDE - INLET TUBE

▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (28 parts)

Ref	OEM Part #	Part Name
-	1630-7360A13	GEAR HOUSING ASSEMBLY, COMPLETE(LONG SHAFT) Comment: SEE NOTE BELOW UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
1	1630-4921A1	GEAR HOUSING ASSEMBLY Comment: SEE PAGE 26 FOR PARTS BREAKSOWN UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
44	44434	CAM, SHIFT
45	31334	FOLLOWER, CAM
46	24-31333	SPRING, COMPRESSION - CAM FOLLOWER
47	15-30522A1	SHIM ASSEMBLY, BEARING TO GEAR HOUSING (.002-3-5-10)
48	30-21889	BEARING, BALL - FORWARD GEAR
49	43-48577A3	FORWARD GEAR ASSEMBLY
50	31-22458	BEARING, ROLLER - FORWARD GEAR
51	52-63314	RATCHET, SLIDING CLUTCH Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
52	53-32449	RING, RETAINING - CROSS PIN
53	17-30535	PIN, CROSS - RATCHET TO PROPELLER SHAFT
54	44-75667A2	SHAFT ASSEMBLY, PROPELLER Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
55	43-63316	REVERSE GEAR ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
56	12-30531	WASHER, THRUST - REVERSE GEAR
57	30-21889	BEARING, BALL - REVERSE GEAR
58	15-30532A1	SHIM ASSEMBLY, THRUST WASHER TO HOUSING (.002-3-5-10)
59	25-30529	"O" RING, BEARING CARRIER
60	63317T3	BEARING CARRIER ASSEMBLY Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
61	31-22458	BEARING, ROLLER - BEARING CARRIER
62	26-30530	OIL SEAL, BEARING CARRIER
63	12-30528	WASHER, GEAR HOUSING COVER
64	30537	COVER, GEAR HOUSING
65	86665A1	THRUST HUB ASSEMBLY, PROPELLER SHAFT Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
66	86665A1	GUIDE COLLAR, PROPLELLER Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
67	48-63494A10	PROPELLER ASSEMBLY (2 BLADE - ALUMINUM - 6" PITCH)-SERIAL GR
68	11-64075A1	SPACER, SPLINDER - PROPELLER NUT Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
69	11-64075A1	NUT, PROPELLER

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
-	1260-859061A1	FUEL TANK ASSEMBLY

▶SHIFT CONTROL LINKAGE (18 parts)

Ref	OEM Part #	Part Name
1	93730T	HANDLE, SHIFT CONTROL Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
2	66378	SHIFT, SHIFT - CONTROL HANDLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
3	23-66375	BUSHING, NYLON - SHIFT CONTROL HANDLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
4	66414	CAM, DETENT - SHIFT SHAFT Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
5	43-66377	GEAR, HORIZONTAL - SHIFT CONTROL HANDLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
6	12-8M0204649	WASHER, SHIFT CONTROL HANDLE TO SHAFT
7	11-826709109	NUT, SHIFT CONTROL HANDLE TO SHAFT
8	24-30817	SPRING, TENSION - SHIFT CONTROL HANDLE Comment: UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
9	17-31224	PIN, DOWEL - TENSION SPRING TO HANDLE Comment: UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
10	17-25905	PIN, DETENT CAM TO SHIFT SHAFT
11	12-8M0204649	WASHER, SHIFT CONTROL HANDLE
12	11-8267089	NUT, HORIZONTAL GEAR TO SHIFT CONTROL HANDLE
13	24-39627	SPRING, DETENT - CRANKCASE
14	39601	PLATE, DETENT SPRING
15	10-25764	SCREW, PLATE AND SPRING TO CRANKCASE (1/2")
16	71660	SHIFT SHAFT, UPPER Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
17	23-30677	BUSHING, NYLON - SHIFT CONTROL SHAFT
18	43-86686A1	GEAR, SECTOR - SHIFT SHAFT

▶STATOR AND IGNITION COMPONENTS (29 parts)

Ref	OEM Part #	Part Name
1	336-4524A1	COVER ASSEMBLY
2	10-60491	SCREW, COVER TO MODULE (5/8")
3	336-4516A2	IGNITION MODULE ASSEMBLY
4	10-59800	SCREW, MODULE TO STATOR (9/16")
5	10-36046	SCREW, MODULE - COIL LEADS (1/4")
6	13-26996	LOCKWASHER, MODULE - IGNITION COIL LEAD TERMINALS
7	11-45076	NUT, MODULE - IGNITION COIL LEAD TERMINALS
8	336-4469A1	COIL, LOW SPEED
9	54-59538	CLIP, COIL RETAINING
10	54-59539	CLIP, COIL RETAINING
11	336-4463	CONDENSER ASSEMBLY
12	10-62269	SCREW, CONDENSER ATTACHING (7/16")
13	336-4476A6	STATOR ASSEMBLY
14	336-4458	PLATE, STATOR HOLD DOWN
15	10-35400	SCREW, HOLD DOWN PLATE TO STATOR (7/16")
16	15-33910015	SHIM, STATOR PLATE TO UPPER END CAP
17	336-3989	WICH, CAM WIPER - STATOR ASSEMBLY
18	336-4318A2	MAKER ASSEMBLY, STATOR HOUSING
19	10-56266	SCREW, MAKER TO STATOR HOUSING (3/8")
20	56520	CAM, THROTTLE
21	10-69054	SCREW, THROTTLE CAM TO CONTRACT HOUSING
22	12-37998	WASHER, THROTTLE CAM ATTACHING SCREW
23	56757A5	JUMPER WIRE ASS'Y, CONDENSER TO COVER (BLACK - 4 1/4")
24	56318A11	LEAD ASSEMBLY, MODULE TO IDNITION COIL (GREEN - 12 1/4")
25	38938	BOOT, LEAD ASSEMBLY
26	56316A4	CABLE ASSEMBLY, STATOR HOUSING (WHITE - 10 3/4")
27	38938	BOOT, CABLE
28	336-4460	INSULATOR, CABLE TO CONTRACT HOUSING
29	11-56325	NUT, CABLE INSULATOR

▶STEERING HANDLE ASSEMBLY (21 parts)

Ref	OEM Part #	Part Name
-	60850A6	STEERING HANDLE ASSEMBLY, COMP. Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
1	60854	GRIP, HANDLE - THROTTLE
2	62251	CAP, HANDLE THROTTLE
3	66393	SHAFT, THROTTLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
4	66394A1	HANDLE ASSEMBLY, THROTTLE SHAFT Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
4A	17-46152	PIN, THROTTLE HANDLE Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
5	12-62252	WASHER, THROTTLE HANDLE TO STEERING ARM
6	60850	ARM, STEERING HANDLE
7	43-60852	GEAR, BALL THROTTLE SHAFT
8	17-27088	PIN, BALL GEAR TO THROTTLE SHAFT
9	48003	PIVOT, STEEREING HANDLE TO BRACKET
10	15-48002015	SHIM, HANDLE PIVOT TO BRK. (.015)
11	10-64074	SCREW, HANDLE TO ARM BRK. (5/8") Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
12	60857A2	UNIVERSAL JOINT ASSEMBLY
13	43-60852	GEAR, BALL - UNIVERSAL JOINT
14	17-68436	PIN, BALL GEAR TO UNIVERSAL JOINT
15	96130A1	BRACKET, STEERING ARM
16	10-62233	SCREW, DETENT SPRING TO STEERING ARM BRACKET (5/8")
17	24-72847	SPRING, DETENT - STEERING HANDLE
18	10-30679	SCREW, STEERING ARM BRACKET TO SADDLE (2 1/2")
19	11-8M0207775	NUT, STEERING ARM BRACKET FASTENING SCREW

▶THROTTLE CONTROL LINKAGE (17 parts)

Ref	OEM Part #	Part Name
1	43-60856	GEAR, HORIZONTAL - THROTTLE CONTROL
2	60885T	HOUSING, HORIZONTAL GEAR
3	10-96138	SCREW, THROTTLE CONTROL HOUSING TO BOTTOM COWL (5/8")
4	15-64653A1	SHIM, PINION GEAR TO BOTTOM COWL
5	42666A3	GEAR AND SHAFT ASS'Y, THROTTLE CONTROL Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
5&9	42666A3	GEAR AND SHAFT ASS'Y, THROTTLE CONTROL Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
6	62099T	BRACKET, THROTTLE CONTROL LEVER
7	10-23015	SCREW, ADJUSTING - THROTTLE (1")
8	11-68219	NUT, LOCK - THROTTLE ADJUSTING SCREWS
9	42666A3	LEVER, THROTTLE CONTROL Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
10	17-27088	PIN, ROLL - LEVER TO VERTICAL SHAFT
11	60920	LINK, THROTTLE LEVER TO STATOR PLATE
12	10-34696	SCREW, THROTTLE LINK TO TTHROTTLE LEVER (3/4")
13	12-34392	WASHER, THROTTLE LINK CREW
14	13-29720	WASHER, WAVE - THROTTLE LINK SCREW
15	11-28656	NUT, THROTTLE LINK SCREW
16	10-56027	SCREW, THROTTLE LINK TO STATOR PLATE (7/8")

▶TOP COWL AND STARTER ASSEMBLY (37 parts)

Ref	OEM Part #	Part Name
1	191-7668A2	TOP COWL ASSEMBLY Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
2	39538	STRIP, SOUND SEAL - REAR
3	39537	STRIP, SOUND SEAL - FORWARD
4	46231	BLANKET, SOUND ABSORBING - STARBOARD Comment: UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
5	35846	BLANKET, SOUND ABSORBING - PORT Comment: UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
6	35848	BLANKET, SOUND ABSORBING - REAR Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
7	66018	MOUNT, RUBBER - TOP COWL Comment: UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
8	89096	COVER, TRIM - TOP COWL Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
9	10-64652	SCREW, TRIM COVER TO TOP COWL Comment: UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
10	14-20165	TAB WASHER, CHEAVE SHAFT NUT
11	11-20166	NUT, SHEAVE SHAFT (LEFT HAND THREAD)
12	64601	COVER, VENT - TO COWL Comment: PART OF A-191-5032A4 TOP COWL ASSEMBLY UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
13	10-35519	SCREW, VENT SCREEN TO TOP COWL (3/8") Comment: PART OF A-191-5032A4 TOP COWL ASSEMBLY
14	39258	BRACKET, STARBOARD - TOP COWL FASTENING
15	10-39514	SCREW, BRACKET TO TOP COWL (1 1/8")
16	12-8M0204649	WASHER, BRACKET SCREW (1/16")
17	20155	RETAINER, STARTER SPRING
18	24-29340T02	SPRING ASSEMBLY, STARTER REWIND
19	23-28912	BUSHING, SPRING GUIDE
20	50-93696A2	STARTER SHEAVE ASSEMBLY
21	17-22896	PIN, RETAINER - STARTER CABLE
22	30596	PAWL, STARTER
23	13-36206	WASHER, WAVE - STARTER PAWL
24	23-28919	BUSHING, NYLON - SHEAVE SHAFT SPACER
25	23-61005	SPACER, SHEAVE SHAFT
26	26179	RETAINER, SHEAVE SHAFT TO STARTER CHEAVE
27	12-35559	WASHER, SHEAVE SHAFT RETAINER
28	13-20160	WASHER, WAVE - RETAINER TENSION
29	30595	PLATE, RETAINER - STARTER PAWL
30	35558	SHAFT, SHEAVE
31	55860	PULLEY, STARTER CABLE
32	23-309772	SPACER, CABLE PULLEY
33	12-22887	WASHER, PULLEY FASTENING SCREW
34	10-28789	SCREW, PULLEY TO TOP COWL (3/4")
35	50-12066Q10	STARTER CABLE ASSEMBLY
36	30782	HANDLE, STARTER CABLE
37	79470A1	RETAINER, STARTER CABLE AND HANDLE

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 40 (1 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.

Popular Products

Popular Products

Popular Products

Mercury 40 (1 CYL.) (3306257 THRU 8026539) Parts & Diagrams

Categories

Refined By Clear all

Brand

Horsepower

Engine

Availability

Price

Need Help?

Images

Product

Price

Qty

Options