Mercury 75 (3 CYL.) (9483121 THRU 9506480) Parts & Diagrams

🔎 Mercury 75 (3 CYL.) Reference Library — Exploded parts diagrams (26 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 75 (3 CYL.) is a 4-Stroke, Inline 4-Cylinder, EFI, SOHC outboard motor. Suited for bay boats, pontoons, and center-console fishing boats requiring reliable mid-range power.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 4-Cylinder, EFI, SOHC
Horsepower	75 HP
Displacement	2100 cc
Bore x Stroke	90 mm x 81 mm
Spark Plug (Type & Gap)	NGK IZFR6F-11
Engine Oil Capacity	5.2 L (5.5 quart)
Recommended Engine Oil	Mercury FourStroke Oil 10W-30
Gear Case Oil Capacity	710 mL (24 fl oz)
Idle Speed (in gear)	650 ± 50 RPM (in gear)
Full Throttle RPM Range	4500-5500
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 75 (3 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 75 (3 CYL.).

▶CARBURETOR (27 parts)

Ref	OEM Part #	Part Name
-	1395-8236354	REPAIR KIT
1	3301-9012A19	CARBURETOR ASSEMBLY Comment: (LOWER) 90 - WME-5
2	NSS	NOT SOLD SEPARATE, GASKET-FUEL BOWL
3	NSS	NOT SOLD SEPARATE, RETAINING RING
4	1395-811693	BOWL, Fuel Comment: (MIDDLE/LOWER)
5	1395-9591	SHAFT, Throttle (UPPER/LOWER)
6	19270	SHAFT, Throttle (MIDDLE)
7	1395-9609	VALVE, Throttle Comment: (WME-4/WME-5)
8	1395-9594	FLOAT
9	NSS	NOT SOLD SEPARATE, FLOAT SHAFT
10	1395-879194011	VALVE, Inlet Needle
11	1395-811694	PLUG, MAIN JET
12	NSS	NOT SOLD SEPARATE, GASKET-PLUG
13	NSS	NOT SOLD SEPARATE, GASKET-COVER PLATE
14	27-151724	GASKET, FLANGE
15	NSS	NOT SOLD SEPARATE, SCREW-THROTTLE VALVE
16	1395-9597	SCREW, COVER PLATE
17	1395-808612	SCREW, FUEL BOWL
18	1395-9598	COVER PLATE
19	1395-6207	JET, (.072), MAIN FUEL Comment: (70/90)
20	1395-8423	JET, (.094), VENT (.094)
21	NSS	NOT SOLD SEPARATE, GASKET-NOZZLE WELL
22	NSS	NOT SOLD SEPARATE, SPRING-IDLE NEEDLE
23	NSS	NOT SOLD SEPARATE, SPRING-THROTTLE RETURN
24	NSS	NOT SOLD SEPARATE, SPRING-IDLE AIR
25	NSS	NOT SOLD SEPARATE, IDLE NEEDLE
26	NSS	NOT SOLD SEPARATE, IDLE AIR NEEDLE

▶CARBURETOR AND ATTENUATOR PLATE (25 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	3301-9012A17	CARBURETOR ASSEMBLY Comment: (TOP - 90)
2	3301-9012A18	CARBURETOR ASSEMBLY Comment: (CENTER - 90)
3	3301-9012A19	CARBURETOR ASSEMBLY Comment: (BOTTOM - 90)
4/5	27-151724	GASKET, CARBURETOR
6	32-9912878	TUBING, CARBURETOR TO CARBURETOR
7	54-816311T	CLAMP
8	8M0084744	LINK ROD
9	11399A1	ARM ASSEMBLY
10	10-40057103	SCREW, (M5 x 6), ARM
11	12-8M0204666	WASHER, (.203 x .500 x .032), ARM SCREW
12	67748	ROLLER
13	98886T01	LINK, ADJUSTING
14	98887T	LINK, Throttle
15	10-48409	SCREW, (#10-16 x .625) Stainless Steel, LINK
16	42970A2	PLATE ASSEMBLY, SOUND ATTENUATOR
17	12-4002217	WASHER, CARBURETOR STUDS
18	11-401388	NUT, CARBURETOR STUDS
19	39519	CUP, RETAINER
20	98889	LATCH, CONTROL CABLE
21	10-42975	DRIVE SCREW, LATCH TO PLATE
22	27-430001	GASKET, ATTENUATOR COVER
23	42969A3	COVER, ATTENUATOR
24	10-48409	SCREW, (#10-16 x .625) Stainless Steel, ATTENUATOR COVER
25	12-8M0204666	WASHER, (.203 x .500 x .032), LINK SCREW

▶COWL MOUNTING BRACKETS (27 parts)

Ref	OEM Part #	Part Name
1	42965A2	BRACKET ASSEMBLY, COWL SEAL Comment: (MARINER)
2	183061	SEAL, BRACKET
3	42935	SEAL
4	42908	RESTRAINT
5	10-400015	SCREW, (M5 x 10), RESTRAINT
6	12-42118	WASHER, RESTRAINT SCREW
7	42907	CONNECTOR, TELL TALE
8	32-8M0108349	TUBING, TELL TALE
9	54-816311T	CLAMP
10	932642	HOUSING, HINGE
11	10-8M0103817	SCREW, HOUSING
12	12-814803	WASHER, HOUSING SCREW
13	12-8M0204690	WASHER, HOUSING SCREW
14	25-88033	GROMMET, HOUSING SCREW
15	23-14395	BUSHING, HOUSING SCREW
16	10-4000120	SCREW, (M5 x 25), HOUSING TO BRACKET
17	12-42118	WASHER, HOUSING SCREW
18	42952T6	BRACKET, SUPPORT (FRONT) Comment: (MARINER)
19	67260	SEAL, CONTROL CABLES
20	25-67272	GROMMET, BRACKET
21	99447	RETAINER, CONTROL CABLES Comment: (POWER TRIM)
22	10-40011109	SCREW, (M5 x 25), RETAINER
23	10-82127335	SCREW, (M8 x 1.25 x 35) , BRACKET
24	12-814803	WASHER, BRACKET SCREW
25	12-8M0204690	WASHER, BRACKET SCREW
26	25-88033	GROMMET, BRACKET
27	23-14395	BUSHING, BRACKET SCREW

▶COWLS AND FRONT COVER (30 parts)

Ref	OEM Part #	Part Name
1	2188-9006A3	TOP COWL ASSEMBLY, PORT Comment: (MARINER)
2	429404	SEAL, UPPER COWL
3	12401	SEAL, COWL (REAR)
4	90274	SEAL
5	42958	SHIELD, AIR INLET
6	10-48409	SCREW, (#10-16 x .625) Stainless Steel, SHIELD
7	12-4002313	WASHER, SHIELD SCREW
8	435331	SOUND BLANKET
9	2187-9070A5	COWL ASSEMBLY, STARBOARD Comment: (MARINER)(HANDLE MODELS)
10	26-60297	SEAL
11	11315A1	OIL LEVEL GAUGE ASSEMBLY
12	42957	SHIELD, AIR INLET
13	10-48409	SCREW, (#10-16 x .625) Stainless Steel, SHIELD
14	12-4002313	WASHER, SHIELD SCREW
15	435342	SOUND BLANKET
16	87985	BRACKET (LOWER)
17	879871	BRACKET (UPPER)
18	10-40011149	SCREW, BRACKET
19	120811	LATCH, Cowl
20	10-48409	SCREW, (#10-16 x .625) Stainless Steel, LATCH
21	47341A11	ROPE AND HANDLE KIT, Manual/Emergency Start (MANUAL STARTING)
22	43138A3	COVER ASSEMBLY MARINER
23	12356	BUMPER
24	24-17288	SPRING, COVER
25	43137A1	BRACKET ASSEMBLY
26	11-434181	SPEED NUT
27	15432	RETAINER, BRACKET
28	17-43134	PIN, BRACKET
29	10-48409	SCREW, (#10-16 x .625) Stainless Steel
30	12-8M0204690	WASHER

▶CRANKSHAFT, PISTONS AND CONNECTING RODS(#638-8532--1) (21 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	472-9001T3	CRANKSHAFT ASSEMBLY
2	30-43011T	BEARING, Ball, CRANKSHAFT (LOWER)
3	53-93412	RING, Retaining, BALL BEARING
4	54196A6	CARRIER ASSEMBLY, SEAL
5	65800	PACKING, CARRIER
6	28-91800	KEY, Woodruff, DRIVE
7	43-43019A1	GEAR ASSEMBLY
8	39-42079A4	RING ASSEMBLY, SEALING
9	42943A1	BEARING ASSEMBLY, Roller
10	777-9009A7	PISTON ASSEMBLY Comment: (.030 O.S.)
11	53-857196	RING, Lock
12	39-96170A4	RING SET, Piston Comment: (.030 O.S.)
13	638-9002A6	CONNECTING ROD ASSEMBLY
14	12-8M0032839	WASHER
15	29-8M0204715	NEEDLE, Roller Bearing
16	10-94320	SCREW
17	31-844338A01	BEARING/CAGE KIT
18	31-43013T3	BEARING ASSEMBLY, Roller
19	26-8M0214932	SEAL, Oil
20	25-823683	O-RING

▶CRANKSHAFT, PISTONS AND CONNECTING RODS(#646-818846) (19 parts)

Ref	OEM Part #	Part Name
1	472-9001T3	CRANKSHAFT ASSEMBLY
2	30-43011T	BEARING, Ball (LOWER)
3	786611	WEAR SLEEVE
4	25-35126	O-RING, (.859 x .139)
5	39-818412A4	RING ASSEMBLY
6	28-91800	KEY, Woodruff
7	43-43019A1	GEAR ASSEMBLY
8	31-43013T3	BEARING ASSEMBLY, Roller (UPPER)
9	26-8M0214932	SEAL, Oil
10	25-823683	O-RING
11	42943A1	BEARING ASSEMBLY, Roller
12	777-815965A6	PISTON ASSEMBLY Comment: (.030 O.S.)
13	53-857196	RING, Lock
14	39-96170A4	RING SET, Piston Comment: (.030 O.S.)
15	646-818846T6	CONNECTING ROD ASSEMBLY
16	12-8M0012298	WASHER
17	29-8M0214954	BEARING, Needle
18	10-94320	SCREW, (.375-24 x 1.250)
19	31-844338A01	BEARING ASSEMBLY, Roller

▶CYLINDER BLOCK AND CRANKCASE (39 parts)

Ref	OEM Part #	Part Name
1	876-8947T51	CYLINDER BLOCK ASSEMBLY Comment: (90)
2	10-4009680	SCREW, (M10 x 80), CRANKCASE TO CYLINDER BLOCK
3	17-8M0036405	PIN (BEARING RACE)
4	17-43044	PIN, Dowel, LOCATING
5	428841	COVER, STARTER (TOP)
6	76867	COVER, STARTER (BOTTOM)
7	10-81742750	SCREW, STARTER COVER
8	65848	CARRIER, POPPET VALVE
9	25-64872	GROMMET, POPPET VALVE
10	21-42657A3	CHECK VALVE, CRANKCASE
11	10-814776	SCREW, ADUSTING
12	11-400212	NUT, JAM - ADJUSTING SCREW
13	42942	CAP, ADJUSTING SCREW
14	21-426233	CHECK VALVE (PRESS-IN)
15	32-892024122	TUBING, (20.00 Feet Bulk), BLEED
16	10-82127335	SCREW, (M8 x 1.25 x 35) , CRANKCASE TO CYLINDER BLOCK
17	99162001	BOOT, OIL TANK
18	1034-9003A2	COVER, CYLINDER BLOCK
19	27-430057	GASKET, CYLINDER BLOCK COVER
20	10-82127335	SCREW, (M8 x 1.25 x 35) , CYLINDER BLOCK COVER
21	54-47483	J CLIP, CYLINDER BLOCK COVER SCREW
22	78799	SENDER, Temperature (19.50 Inch)
23	44290T	RETAINER, TEMPERATURE SENDER
24	10-48409	SCREW, (#10-16 x .625) Stainless Steel, RETAINER
25	12-8M0204666	WASHER, (.203 x .500 x .032), RETAINER SCREW
26	86596	POPPET VALVE
27	648771	DIAPHRAGM
28	12-94182	WASHER
29	10-69570	SCREW, (#10-16 x .750)
30	24-42996	SPRING, (Stainless Steel), COMPRESSION - POPPET VALVE
31	75692	THERMOSTAT (143 DEG.)
32	27-8M0204714	GASKET, THERMOSTAT
33	27-430068	GASKET, THERMOSTAT COVER
34	8M0047619	COVER, THERMOSTAT
35	10-82127335	SCREW, (M8 x 1.25 x 35) , THERMOSTAT COVER
36	12621	COVER, OIL PAD NON OIL INJECTION
37	27-126201	GASKET, COVER NON OIL INJECTION
38	10-40007106	SCREW, (M5 x 13), COVER NON OIL INJECTION
39	12-4002314	WASHER, COVER SCREW NON OIL INJECTION

▶Co-Pilot (11 parts)

Ref	OEM Part #	Part Name
-	56-52148A7	CO-PILOT ASSEMBLY
1	52148	PILOT ROD
2	11-52155A1	NUT ASSEMBLY
3	10-36154	SCREW, (.250-28 x 1.380)
4	11-52152	WING NUT
5	873491	ROD
6	23-521512	BUSHING
7	12-20722	WASHER, (.328 x .625 x .060)
8	11-826709111	NUT, (.312-24)
9	12-20722	WASHER, (.328 x .625 x .060)
10	11-826709111	NUT, (.312-24)

▶DRIVESHAFT HOUSING (38 parts)

Ref	OEM Part #	Part Name
--	12092A4	SPACER KIT, DRIVE SHAFT HOUSING - X-LONG Comment: (MARINER)
1	1598-8974T23	HOUSING ASSEMBLY, Driveshaft Comment: (MARINER)
2	16-903502	STUD, (M10 x 227), DRIVE SHAFT HOUSING Comment: (X-LONG)
3	10-4000380	SCREW, (M10 x 45), GEAR HOUSING Comment: (LONG)
4	16-903503	STUD, (M10 x 190), GEAR HOUSING Comment: (X-LONG)
5	12-45176	WASHER, GEAR HOUSING STUD/SCREW
6	11-40140	NUT, (M10), GEAR HOUSING STUD Comment: (X-LONG - QUAN. OF 5)
7	429222	GUIDE, PUSH ROD (NON POWER TRIM)
7A	429221	PLUG (POWER TRIM)
8	22-85822A4	PICKUP ASSEMBLY, Speedometer
9	22-433351	CONNECTOR, 90 Degree (.125-27) Nylon
10	22-85822T	CONNECTOR, Straight
11	14664A2	HOOK ASSEMBLY, Reverse, NON POWER TRIM
12	16686	PUSH ROD, NON POWER TRIM
13	99606	SHAFT, REVERSE LOCK - NON POWER TRIM
14	18-45882	COTTER PIN, SHAFT - NON POWER TRIM
15	23-69132	BUSHING, REVERSE LOCK SHAFT - NON POWER TRIM
16	24-996261	SPRING, REVERSE LOCK - NON POWER TRIM
17	18-47959	COTTER PIN, SPRING - NON POWER TRIM
18	12-8M0042642	WASHER, (.323 x .563 x .063) Stainless Steel, PUSH ROD - NON POWER TRIM
19	24-44297	SPRING, PUSH ROD NUT - NON POWER TRIM
20	996361	YOKE, PUSH ROD - NON POWER TRIM
21	11-82670911	NUT, (.312-24) Stainless Steel, JAM - PUSH ROD - NON POWER TRIM
22	17-99663	PIN, Clevis, REVERSE LOCK - NON POWER TRIM
23	18-25191	COTTER PIN, CLEVIS PIN - NON POWER TRIM
24	44343T1	MOUNT, LOWER Comment: (X-LONG)
25	10-898835001	BOLT, (M12 x 154), LOWER MOUNT
26	12-28051	WASHER, LOWER MOUNT BOLT
27	12-28053	WASHER, LOWER MOUNT BOLT
28	12-30119	WASHER, (.875 Inch Outside Diameter), LOWER MOUNT BOLT
29	11-8M0204662	NUT, (M12), LOWER MOUNT BOLT
30	88238A10	CABLE ASSEMBLY, Ground
31	10-41508	SCREW, (.250-20 x .500) Stainless Steel, GROUND WIRE
32	8M0036730	CLAMP, LOWER MOUNT
33	11-35521	NUT, NYLON - COVER SCREW
34	10-40011149	SCREW, CLAMP
35	67077F1	COVER, LOWER MOUNT Comment: (MARINER)
36	10-88417	SCREW, (#12-24 x .620), COVER

▶ELECTRICAL COMPONENTS (38 parts)

Ref	OEM Part #	Part Name
1	42968A23	PLATE, IGNITION
2	332-7778A12	SWITCHBOX ASSEMBLY
3	10-69079	SCREW, (#10-16 x .440), SWITCH BOX
4	10-40007110	SCREW, (M5 x 30), SWITCH BOX
5	23-94304	SPACER, SWITCH BOX SCREW
6	10-32,11-45076	NUT, Brass, SWITCH BOX TERMINAL
7	84-41592A4	HARNESS ASSEMBLY, PRIMARY
8	84-813715A1	LEAD ASSEMBLY, HIGH TENSION
9	85-63709A1	BOOT/TERMINAL KIT, SPARK PLUG
10	33-896329833	SPARK PLUG
11	10-82155025	SCREW, IGNITION PLATE
12	339-832757A4	COIL ASSEMBLY, Ignition
13	10-32,11-45076	NUT, Brass, IGNITION COIL TERMINAL
14	43542	COVER, IGNITION COIL
15	10-40007114	SCREW, (M5 x 50), IGNITION COIL COVER
16	12-89302	WASHER, (.203 x .406 x .040), COIL COVER SCREW
17	8M0058226	RECTIFIER
18	10-40056107	SCREW, (M5 x 16), RECTIFIER
19	10-32,11-45076	NUT, Brass, RECTIFIER TERMINAL
20	16731T01	MERCURY SWITCH ASSEMBLY
21	10-40056107	SCREW, (M5 x 16), MERCURY SWITCH
22	86-45915	TERMINAL BLOCK
23	10-48408	SCREW, (#10-16 x .500), TERMINAL BLOCK
24	84-41591A3	HARNESS ASSEMBLY, ENGINE
25	88-8M0207796	FUSE, 20 Ampere
26	84-88439A4	CABLE ASSEMBLY, Battery - Negative
27	8M0185622	SOLENOID, Starter
28	10-40007106	SCREW, (M5 x 13), STARTER SOLENOID
29	12-4002314	WASHER, STARTER SOLENOID SCREW
30	84-88807A6	CABLE ASSEMBLY, (3.50 Inches) Black, SOLENOID SCREW
31	13-26992	LOCKWASHER, (.250) Stainless Steel Comment: STARTER SOLENOID TERMINAL (1/4")
32	11-64015	NUT, (.250-20), STARTER SOLENOID TERMINAL
33	8-32,11-26419	NUT, Brass, STARTER SOLENOID TERMINAL
34	84-88808A18	WIRE ASSEMBLY, (3.00 Inches), RECTIFIER TO SOLENOID (RED)
35	124174	COVER, IGNITION
36	10-40007114	SCREW, (M5 x 50), IGNITION COVER
37	12-89302	WASHER, (.203 x .406 x .040), IGNITION COVER SCREW
38	134731	HOLDER, Fuse

▶EXHAUST PLATE (34 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	42954A1	PLATE ASSEMBLY, EXHAUST
2	17-23784	PIN, Dowel
3	42939	SEAL, LOWER COWL
4	443441	MOUNT, (3.25 Inch), UPPER Comment: (X-LONG)
5	10-82155050	SCREW, UPPER MOUNT TO EXHAUST PLATE
6	10-12515	SCREW, (M12 x 160), UPPER MOUNT Comment: (HANDLE MODELS)
7	12-32834	WASHER, UPPER MOUNT SCREW
8	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel, UPPER MOUNT SCREW
9	11-896963	NUT, (M12), UPPER MOUNT SCREW
10	22-996642	ELBOW, EXHAUSE PLATE
11	10-4010770	SCREW, (M8 x 70), EXHAUSE PLATE
12	27-430086	GASKET, EXHAUST PLATE
13	42966T	TUBE, Exhaust
14	10-4010735	SCREW, (M8 x 35), EXHAUST TUBE TO PLATE
15	8M0039075	SEAL, EXHAUST TUBE
16	32-430142	TUBE, Water Comment: (X-LONG)
17	99019	CLAMP, WATER TUBE SEAL
18	42941001	SEAL, Water Tube (UPPER)
19	10-4010750	SCREW, (M8 x 50), CLAMP
20	25-93221002	GROMMET, WATER TUBE
21	42953A2	BRACKET ASSEMBLY, COWL (LOWER)
22	43405	SEAL, LOWER COWL BRACKET
23	10-81742755	SCREW, LOWER COWL BRACKET
24	23-48237	BUSHING, SHIFT SHAFT
25	79932A9	SHIFT SHAFT ASSEMBLY (UPPER)
26	23-42994	BUSHING, SHIFT SHAFT
27	42912A1	SHIFT LINK
28	13-29720	WAVE WASHER, SHIFT SHAFT
29	12-24664	WASHER, (M4 x 20), SHIFT SHAFT
30	11-401386	NUT, (M6), SHIFT SHAFT
31	23-11289	SPACER, SHIFT SHAFT Comment: (X-LONG)
32	43053	COUPLING, SHIFT SHAFT ) Comment: (NON POWER TRIM
33	43585	COUPLING, SHIFT SHAFT Comment: (POWER TRIM)

▶FLYWHEEL AND STARTER MOTOR (19 parts)

Ref	OEM Part #	Part Name
1	19-45907	PLUG, Yellow, FLYWHEEL
2	42956A1	COVER ASSEMBLY, FLYWHEEL
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	11-42979	NUT, (M16), FLYWHEEL
7	12-33001	WASHER, (.641 x 1.250 x .190), FLYWHEEL
8	261-859234T30	FLYWHEEL ASSEMBLY
9	398-8778A10	STATOR ASSEMBLY
10	10-4007325	SCREW, (M5 x 25), STATOR
11	99021A3	TRIGGER ASSEMBLY
12	50-893891T	STARTER MOTOR ASSEMBLY
13	23-8M0034918	COLLAR, STARTER MOTOR
14	8M0043376	STOP, RUBBER-STARTER MOTOR
15	84-93388A1	CABLE ASSEMBLY, (6.00 Inches) Black, STARTER MOTOR TO PLATE
16	10-69035	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel, WIRE TO STARTER MOTOR
17	84-88439A20	WIRE, STARTER MOTOR (BLACK)
18	13-26992	LOCKWASHER, (.250) Stainless Steel, STARTER MOTOR TERMINAL
19	11-64015	NUT, (.250-20), STARTER MOTOR TERMINAL

▶FUEL PUMP (32 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	14360A78	PUMP ASSEMBLY, Fuel
2	42909A4	DIAPHRAGM KIT
3	NSS	NOT SOLD SEPARATE, CHECK VALVE-RUBBER
4	NSS	NOT SOLD SEPARATE, GASKET-BOOST
5	NSS	NOT SOLD SEPARATE, DIAPHRAGM
6	NSS	NOT SOLD SEPARATE, GASKET-PULSE
7	NSS	NOT SOLD SEPARATE, SPRING
8	NSS	NOT SOLD SEPARATE, CAP
9	NSS	NOT SOLD SEPARATE, CHECK VALVE
10	NSS	NOT SOLD SEPARATE, RETAINER
11	NSS	NOT SOLD SEPARATE, SPRING
12	NSS	NOT SOLD SEPARATE, CAP
13	27-8M0204705	GASKET, BASE
14	98768	BASE, FUEL PUMP
15	98775A1	PLATE, FUEL PUMP
16	21-424811	CHECK VALVE
17	22-19688	FITTING
18	10-82104540	SCREW, FUEL PUMP
19	10-40057134	SCREW, (M6 x 50), FUEL PUMP TO CRANKCASE
20	32-8M0108349	TUBING
21	35-816296Q2	FILTER, Fuel
22	54-816311T	CLAMP, FUEL TUBING
23	22-15781A10	CONNECTOR, Fuel
24	25-145092	GROMMET, FUEL CONNECTOR
25	10-4000183	SCREW, (M6 x 35), FUEL CONNECTOR
26	89-819503A2	VALVE, Enrichner
27	32-1430165	TUBING, (38.00 Inches Bulk), ENRICHNER VALVE
28	54-15279	CLAMP, ENRICHNER VALVE
29	10-4000171	SCREW, (M6 x 16), CLAMP
30	22-64705	FITTING, FUEL LINE
31	32-8M0108355	LINE, (57.00 Inches Bulk)

▶GEAR HOUSING(DRIVESHAFT) (41 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	1667-9011T74	GEAR HOUSING ASSEMBLY, Basic Comment: MARINER
2	17-8M0084244	PIN, Dowel - With Hole (.375 x .625) (FRONT)
3	10-28653	SCREW, (#10-32 x 0.25), VENT
4	19643	WASHER, VENT SCREW
5	10-79953Q04	SCREW, (.375-16 x .250), GREASE FILLER
6	12-191833	WASHER, DRAIN/FILLER SCREW
7	22-8M0058389	SCREW, Magnetic, DRAIN
8	17-43044	PIN, Dowel - Without Hole (.375 x .625) (REAR) (QTY. OF 2 ON X-LONG)
9	97-31640Q4	TRIM TAB ASSEMBLY
10	10-825427	SCREW, (.437-14 x 1.250), TRIM TAB
11	12-45176	WASHER, (.453 x .812 x .105) Stainless Steel, TRIM TAB SCREW
12	43040T1	CARRIER ASSEMBLY, ROLLER BEARING
13	43-44484T	GEAR, Pinion (13 Teeth)
14	11-35921	NUT, (.625-18), PINION GEAR TO DRIVE SHAFT
15	760394	CAM, Shift Control
16	31-42677A1	BEARING ASSEMBLY, Tapered Roller
17	15-44492A1	SHIM SET
18	45-43032A4	DRIVESHAFT ASSEMBLY Comment: (X-LONG)
19	42461A1	SLEEVE/RING KIT
20	43055A4	COVER ASSEMBLY
21	27-8M0214931	GASKET, COVER TO GEAR HOUSING
22	26-43036	SEAL, Oil (LOWER)
23	26-43035	SEAL, Oil (UPPER)
24	27-430331	GASKET, COVER TO FACE PLATE
25	27-430341	GASKET, WATER PUMP TO FACE PLATE
26	43050	FACE PLATE
27	28-8M0204723	KEY, IMPELLER DRIVE
28	47-43026T2	IMPELLER
29	817275A2	PUMP ASSEMBLY, Water
30	8M0204658	SEAL, WATER TUBE
31	10-8M0204707	SCREW, (M6 x 25), COVER
32	10-4000332	SCREW, (M6 x 35), WATER PUMP
33	12-4002315	WASHER, (6.60 X 12.5 X 1.5 mm -SS)
34	23-8M0204659	INSULATOR, WATER PUMP SCREW
35	43049A1	SHIFT SHAFT ASSEMBLY Comment: (X-LONG)
36	53-29641	E RING, SHIFT SHAFT
37	23-43052A4	BUSHING ASSEMBLY, SHIFT SHAFT
38	25-8M0204681	O-RING, (1.424 x .103), BUSHING
39	26-8M0204708	SEAL, Oil, BUSHING
40	10-8M0204741	SCREW, (M6 x 20) Stainless Steel, BUSHING

▶GEAR HOUSING(PROPELLER SHAFT) (26 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	1667-9011T74	GEAR HOUSING ASSEMBLY, Basic Comment: MARINER
41	15-44491A1	SHIM SET
42	31-30894A1	BEARING SET, Cup And Cone
43	43-12634T02	GEAR ASSEMBLY, Forward
44	31-30895T	BEARING, Needle
45	850315A1	FOLLOWER KIT, Cam
46	24-30622	SPRING
47	52-822539T	RATCHET
48	17-8M0100263	PIN, Cross, CLUTCH
49	24-30893	SPRING, CROSS PIN RETAINER
50	44-12238T	PROPELLER SHAFT
51	43-12635T	GEAR, Reverse
52	8M0168901	CARRIER ASSEMBLY, Bearing
53	25-8M0214974	O-RING, (3.609 x .139)
54	31-30956T	BEARING, Needle
55	26-8M0204670	SEAL (INNER)
56	26-8M0205729	SEAL, Oil (OUTER)
57	31-12578T	BEARING, Needle
58	12-12577	THRUST WASHER
59	31-12576	BEARING, Thrust
60	10-4000354	SCREW, (M8 x 30), BEARING CARRIER
61	12-4002317	WASHER, BEARING CARRIER SCREW
62	13191Q01	THRUST WASHER
63	14-816629Q	TAB WASHER, PROPELLER
64	11-52707Q1	PROP NUT KIT, (.750-16)

▶INDUCTION MANIFOLD AND REED BLOCK (39 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	27-43004009	GASKET
2	428791	PLATE, Baffle
3	42878A2	COVER
4	10-82127335	SCREW, (M8 x 1.25 x 35)
5	42881A1	SHIFT RAIL ASSEMBLY
6	14-42981	TAB WASHER
7	10-40001134	SCREW, (M8 x 25)
8	988851	SLIDE
9	23-42994	BUSHING
10	13-29720	WAVE WASHER
11	12-24664	WASHER, (M4 x 20)
12	11-401386	NUT, (M6)
13	12-35459	WASHER
14	11-401386	NUT, (M6)
15	1169-858552T2	END CAP ASSEMBLY
16	21-426585	CHECK VALVE
17	26-41953	SEAL
18	25-89224	O-RING
19	10-40011149	SCREW
20	27-430075	GASKET
21	10-809060A1	SCREW, POWERHEAD
22	884296T	MANIFOLD, Induction
23	42923	BRACKET, FLYWHEEL COVER
24	10-82127335	SCREW, (M8 x 1.25 x 35) , MANIFOLD
25	10-81742740	SCREW, BRACKET AND MANIFOLD
26	16-8M0045410	STUD, FLYWHEEL COVER
27	12-8M0204663	WASHER, COVER STUD
28	12-22887	WASHER, COVER STUD
29	11-816874	WING NUT, COVER STUD
30	16-824470	STUD, CARBURETOR
31	22-996642	ELBOW
32	32-8M0108349	TUBING
33	22-432881	TEE
34	8M0219198	REED BLOCK ASSEMBLY Comment: (75/80/90)
35	27-139376	GASKET, REED BLOCK
36	34-43018A1	REED SET Comment: (75/80/90)
37	42924	RETAINER, REED
39	10-4000171	SCREW, (M6 x 16), REED TO REED BLOCK

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
-	90-14699871	OWNERS GUIDE (MARINER)

▶OIL INJECTION COMPONENTS (30 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	1255-8627A7	TANK ASSEMBLY, Oil
2	99160001	BOOT, OIL TANK (UPPER)
3	87-44452A1	TEST SWITCH ASSEMBLY
4	44437	COVER, TEST SWITCH
5	988952	BRACKET, OIL TANK (UPPER)
6	10-4010630	SCREW, OIL TANK BRACKET
7	36-42653A3	CAP ASSEMBLY, OIL TANK
8	27-42999T	GASKET, CAP
9	93254	SWIVEL BASE
10	93421	SWIVEL BALL
11	43359	ROD, Cowl
12	54-43406	CAMP, COWL ROD
13	10-62568	SCREW, (#10 x 0.375), CLAMP
14	12-22887	WASHER, CLAMP SCREW
15	10-12896	SCREW, (#8-18 x .310), SWITCH
16	87-12886A6	SWITCH ASSEMBLY, OIL TANK
17	99161	BOOT, OIL TANK BASE
18	42888	BRACKET, Oil Tank Base
19	25-56291	GROMMET
20	10-82155050	SCREW, BASE
21	32-82381455	TUBING
22	22-73318	TEE, Plastic
23	54-816311T	CLAMP
24	42959A2	PUMP, Oil
25	25-8M0204667	O-RING, OIL PUMP
26	17335A4	ADAPTOR ASSEMBLY, OIL PUMP
27	43-430201	GEAR, Driven
28	10-82104540	SCREW, OIL PUMP
29	32-82381335	TUBING, OIL PUMP TO FUEL PUMP

▶POWER TRIM COMPONENTS (43 parts)

Ref	OEM Part #	Part Name
1	99659A22	MANIFOLD ASSEMBLY Comment: (MARINER)
2	22-56800	PIPE PLUG, MANIFOLD
3	41493A7	TRIM CYLINDER ASSEMBLY Comment: (MARINER)
4	41492A1	GUIDE ASSEMBLY
5	25-41478A1	REPAIR KIT
6	41482A2	CHECK VALVE KIT
7	1100-8M0021648	GUIDE ASSEMBLY, TRIM ROD
8	878413A1	PISTON/ROD ASSEMBLY, Power Trim, PORT
9	35-12184A1	TRIM FILTER ASSEMBLY
10	878414T01	PISTON/ROD ASSEMBLY, Power Trim, STARBOARD
11	17-821539	PIN, Groove, TRIM CYLINDER (UPPER)
12	99660A1	VALVE ASSEMBLY
13	10-4000327	SCREW, (M6 x 14), COVER
14	12-4002315	WASHER, COVER SCREW
15	99642	COVER, MANIFOLD
16	25-48462A4	O-RING KIT
17	19-99609A1	PLUG ASSEMBLY
18	99641A1	SHAFT ASSEMBLY
19	22-56800	PIPE PLUG, SHAFT
20	10-4008820	SCREW, (M6 x 20), PUMP AND MOTOR
21	13-400256	LOCKWASHER, (M6)
22	826729A10	PUMP AND MOTOR
23	99625002	SHAFT, UPPER
24	97-818298Q1	ANODE ASSEMBLY
25	10-4000332	SCREW, (M6 x 35), ANODE
26	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel, ANODE SCREW
27	8M0045383	STRIKER PLATE, TRIM SHAFT
28	13-58643	LOCKWASHER, (.375)
29	11-46335	NUT, (.375-24)
30	84-99695A1	HARNESS ASSEMBLY, Control, POWER TRIM
31	84-88807A13	CABLE ASSEMBLY (3-1/2" - BLACK)
32	8M0185622	SOLENOID, Starter
33	10-40007106	SCREW, (M5 x 13), STARTER SOLENOID
34	8-32,11-26419	NUT, Brass, SOLENOID TERMINAL
35	13-26992	LOCKWASHER, (.250) Stainless Steel, SOLENOID TERMINAL
36	11-64015	NUT, (.250-20), SOLENOID TERMINAL
37	12-4002314	WASHER, STARTER SOLENOID SCREW
38	54-22875	CLIP, PUMP WIRE
39	8M0084613	C WASHER, CLIP SCREW
40	10-69079	SCREW, (#10-16 x .440), CLIP TO TRANSOM BRACKET
41	17-878267	PIN, Groove, TRIM CYLINDER (LOWER)
42	10-4000377	SCREW, (M10 x 30), MANIFOLD
43	13-400258	LOCKWASHER, (M10) Stainless Steel, MANIFOLD SCREW

▶POWER TRIM PUMP (9 parts)

Ref	OEM Part #	Part Name
-	826729A10	PUMP AND MOTOR
1	12659	FRAME AND FIELD KIT
2	12665	SPRING KIT, Brush
3	13506	BRUSH CARD KIT
4	12662	PUMP AND END FRAME KIT
5	126631	SEAL KIT, Pump
6	12660	END FRAME KIT
7	12661	ARMATURE KIT
8	12664	THRU BOLT KIT

▶STARTER MOTOR(BOSCH) (14 parts)

Ref	OEM Part #	Part Name
-	50-893891T	STARTER MOTOR ASSEMBLY
1	90643	DRIVE KIT
2	685753	DRIVE ASSEMBLY
3	75660	PLATE, DRIVE END
4	10-75385	BOLT, THRU
6	75386	ARMATURE
7	898265016	BRUSH/SPRING KIT
8	23-57387	BUSHING, INSULATING
9	12-38013	WASHER, INPUT STUD
10	13-26992	LOCKWASHER, (.250) Stainless Steel, INPUT STUD
11	11-20890	NUT, (.250-20), INPUT STUD
12	898265014	HOLDER, BRUSH
13	10-68586	SCREW, BRUSH AND HOLDER
14	75383	END CAP, COMMUTATOR

▶STEERING HANDLE COMPONENTS (38 parts)

Ref	OEM Part #	Part Name
-	8949112	KEY, Ignition (2F)
1	12022A14	BRACKET ASSEMBLY Comment: (MARINER)
2	79-12012A1	TACHOMETER ASSEMBLY
3	11-65110	NUT
4	16-12782	STUD, BRACKET
5	15126	SPACER
6	14-12080	TAB WASHER
7	11-4002016	NUT
8	121051	GROMMET
9	84-12649A2	HARNESS ASSEMBLY
10	87-88107A5	KEY SWITCH (SEE BELOW FOR KEY LISTING)
11	11-879755	NUT, Special - Chrome Brass, KEY SWITCH
12	12015A1	COVER, BRACKET
13	10-72169	SCREW, (#10-24 x .500), BRACKET COVER
14	19-889730	PLUG
15	87-11083A4	SWITCH ASSEMBLY, Stop
16	15920Q54	LANYARD ASSEMBLY
17	8M0032846	RETANER, STOP SWITCH
18	10-4000358	SCREW, (M8 x 50), SHIFT LEVER
19	14-42981	TAB WASHER
20	23-889732	BUSHING
21	12021A1	LEVER, Shift
22	12016A2	DETENT ASSEMBLY
23	16-8M0034452	STUD, (.375-24 x 1.125), SHIFT LEVER
24	98530	KNOB, SHIFT LEVER
25	495636	SHIFT ROD
26	48419T	ROD END
27	23-26856	BUSHING
28	12-35950	WASHER, (.273 x .437 x .031) Stainless Steel, SHIFT ROD
29	18-25191	COTTER PIN, SHIFT ROD
30	87-93479A7	SWITCH ASSEMBLY, Neutral Start
31	12609	BRACKET, PRIMARY
32	126101	BRACKET, SWITCH
33	10-90342	SCREW, (#4-40 x .630), SWITCH TO BRACKET
34	4-40,11-24832	NUT, , SWITCH SCREW
35	10-57583T	SCREW, (#8-32 x .375), BRACKET TO BRACKET
36	12-20878	WASHER, BRACKET SCREW
37	8-32,11-26419	NUT, Brass, BRACKET SCREW

▶SWIVEL BRACKET AND STEERING ARM (28 parts)

Ref	OEM Part #	Part Name
-	27-43004A99	GASKET SET
1	1499-8710T21	SWIVEL BRACKET ASSEMBLY Comment: (MARINER)
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
7	23-821207	BUSHING, SWIVEL BRACKET
8	12079A9	SWIVEL PIN ASSEMBLY Comment: (MARINER)(HANDLE MODELS)
9	92876A12	LINK ASSEMBLY, Steering
10	10-849838	SCREW, (.375-24 x 1.25), STEERING LINK TO STEERING ARM
11	11-8M0204726	NUT, (.375-24), STEERING LINK SCREW
12	12-34931	WASHER, (.406 x .734 x .063) Stainless Steel, STEERING LINK TO STEERING ARM
13	13-78854	WAVE WASHER, BOTTOM YOKE
14	42961T2	YOKE ASSEMBLY, Bottom Comment: (MARINER)
15	53-67684	RING, Retaining, BOTTOM YOKE
16	12-67670	WASHER, THRUST - SWIVEL BRACKET
17	99653	BRACKET, SHOCK ABSORBER Comment: NOT USED WITH POWER TRIM
18	99619	SHAFT, SHOCK ABSORBER (LOWER) Comment: NOT USED WITH POWER TRIM
19	17-821539	PIN, Groove, SHOCK ABSORBER Comment: NOT USED WITH POWER TRIM
20	10-4000377	SCREW, (M10 x 30), BRACKET Comment: NOT USED WITH POWER TRIM
21	13-400258	LOCKWASHER, (M10) Stainless Steel, BRACKET SCREW Comment: NOT USED WITH POWER TRIM
22	97-818298Q1	ANODE ASSEMBLY Comment: NOT USED WITH POWER TRIM
23	10-4000332	SCREW, (M6 x 35), ANODE Comment: NOT USED WITH POWER TRIM
24	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel, ANODE SCREW Comment: NOT USED WITH POWER TRIM
25	55-99724T15	SHOCK ABSORBER Comment: (MARINER) NOT USED WITH POWER TRIM MARINER
26	23-821207	BUSHING, SHOCK ABSORBER Comment: NOT USED WITH POWER TRIM
27	99625002	SHAFT, SHOCK ABSORBER (UPPER) Comment: NOT USED WITH POWER TRIM

▶THROTTLE LEVER AND LINKAGE (26 parts)

Ref	OEM Part #	Part Name
1	42946T1	LEVER, THROTTLE
2	10-817582	SCREW, ADJUSTING
3	11-400211	NUT, (M5), JAM-ADJUSTING SCREW
4	429471	LEVER, SPARK ADVANCE
5	10-814776	SCREW, ADJUSTING
6	11-400212	NUT, JAM-ADJUSTING SCREW
7	42942	CAP, NYLON-ADJUSTING
8	16-42986	STUD, LEVERS
9	24-55162	SPRING, THROTTLE/SPARK ADVANCE LEVER
10	23-812930A1	BUSHING, LEVER STUD
11	12-42980	WASHER, LEVER STUD
12	11-90517	NUT, (M10), LEVER STUD
13	42927	INSERT, THROTTLE LEVER
14	12-35459	WASHER, THROTTLE LEVER PIN
15	11-401386	NUT, (M6), THROTTLE LEVER PIN
16	878172	ROD, SPARK ADVANCE
17	93421	SWIVEL BALL
18	93254	SWIVEL BASE
19	878420T	ROD, THROTTLE
20	13-25806	WAVE WASHER, SWIVEL BUSHING
21	23-8M0215006	BUSHING, SWIVEL
22	42948A7	CAM, THROTTLE
23	16-8161949	STUD, THROTTLE CAM
24	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel, THROTTLE CAM STUD
25	11-401386	NUT, (M6), THROTTLE CAM STUD
26	24-14159	SPRING, CAM RETURN

▶TRANSOM BRACKET (21 parts)

Ref	OEM Part #	Part Name
1	3401-8718F8	BRACKET ASSEMBLY, Transom (STARBOARD) Comment: MARINER
2	3400-8716A9	BRACKET ASSEMBLY, Transom (PORT) Comment: MARINER
3	22-8M0169588	FITTING, Grease, PORT TRANSOM BRACKET
4	17-8M0026068	PIN ASSEMBLY, Tilt Lock (NON-POWER TRIM)
5	99170A2	TILT TUBE
6	11-859133	NUT, (1.00-14), TILT TUBE
7	25-45711	O-RING, (.612 x .103), TILT TUBE
8	13-88750	WASHER, TILT TUBE
9	11-858869	NUT, (.875-14), TILT TUBE
10	10-8M0149747	SCREW, (.500-20 x 4.500), TRANSOM BRACKET TO TRANSOM
11	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel, TRANSOM BRACKET BOLT
12	11-91962	NUT, (.500-20), TRANSOM BRACKET BOLT
13	8M0115104	LEVER ASSEMBLY, TILT LOCK
14	13-99611	WAVE WASHER, TILT LEVER
15	23-65830	NYLINER, TILT LEVER
16	99633	KNOB, TILT LOCK LEVER Comment: (MARINER)
17	17-99615	PIN, Groove
18	24-99622	SPRING
19	17-99604	PIN, Groove
20	10-96930A1	BOLT ASSEMBLY, TILT LOCK
21	11-23161	NUT, (.375-24)

▶Tachometer (6 parts)

Ref	OEM Part #	Part Name
1	79-895283Q43	TACHOMETER, 6K
2	79101T	BRACKET, Mounting
3	88-72729	LIGHT BULB, Wedge Base (14V - .19W)
4	88-79888	SOCKET, Light Bulb
5	8-32,11-26419	NUT, Brass
6	84-86396A8	HARNESS ASSEMBLY, Tachometer (5.00 Feet)

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 75 (3 CYL.) running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.

Replace water pump impeller and inspect wear plate
Change engine oil and oil filter (check drain plug washer)
Replace spark plugs and check ignition timing
Drain and refill lower unit gear oil; inspect for water contamination
Inspect fuel lines, primer bulb, and fuel filter for deterioration
Check and replace sacrificial anodes (zinc or aluminum)
Inspect propeller for damage; check shaft seal and cotter pin
Check valve clearance (refer to service manual for specifications)
Lubricate all grease points (steering, tilt tube, shift linkage)
Inspect control cables and throttle/shift linkage for smooth operation

Pro Tip: Always flush the engine with fresh water after saltwater use — even a quick 10-minute flush significantly extends component life.
Pro Tip: Use fuel stabilizer in the tank before winter storage, and fog the cylinders to prevent internal corrosion during extended periods of non-use.

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