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Mercury 75 (9181726 THRU 9219255) Parts & Diagrams
🔎 Mercury 75 Reference Library — Exploded parts diagrams (18 diagrams), specifications, common issues, and maintenance checklist.
The Mercury 75 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:
- 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.
▶BOTTOM COWL AND STOP SWITCH ASSEMBLY (25 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 2159-6681A2 | COWL, BOTTOM |
| 2 | 79300 | MOLDING, BOTTOM COWL |
| 3 | 74360 | PLUG, BOTTOM COWL (MANUAL) |
| 4 | 39778 | GROMMET, CHOKE SHAFT - BOTTOM COWL |
| 5 | 66353 | COVER, ACCESS HOLE |
| 6 | 65479 | COVER, ACCESS HOLE |
| 7 | 39474 | ANCHOR, LATCH - BOTTOM COWL |
| 8 | 10-22483 | SCREW, LATCH ANCHOR TO BOTTOM COWL (1 1/8") |
| 9 | 13-26992 | LOCKWASHER, LATCH ANCHOR SCREW |
| 10 | 23-13127 | WASHER, NYLON - WATER OUTLET TUBE |
| 11 | 26-36556 | SEAL, RUBBER - WATER OUTLET TUBE |
| 12 | 10-38111 | SCREW, BOTTOM COWL TO DRIVE SHAFT HOUSING Comment: (3/4") |
| 13 | 13-26992 | LOCKWASHER, BOTTOM COWL SCREW |
| 14 | 27-89937 | GASKET, POWERHEAD TO ADAPTOR PLATE |
| 15 | 74354 | RETAINER, WIRING HARNESS (BOTTOM COWL) Comment: ELECTRIC |
| 16 | 10-48408 | SCREW, RETAINER TO BOTTOM COWL Comment: ELECTRIC |
| 17 | 24-78810 | SPRING, CABLE TO ARM LATCH |
| 18 | 78809 | LATCH, ARM - BOTTOM COWL |
| 19 | 29-714221 | PIN, ARM LOCATING |
| 20 | 78808 | LATCH, BODY - BOTTOM COWL |
| 21 | 10-32228 | SCREW, LATCH TO BOTTOM COWL |
| 22 | 27-39050 | GASKET, BOTTOM COWL TO DRIVE SHAFT HOUSING |
| 23 | 87-69508A31 | STOP SWITCH ASSEMBLY Comment: MANUAL |
| 24 | 13-69845 | LOCKWASHER, STOP SWITCH Comment: MANUAL |
| 25 | 11-69844 | NUT, STOP SWITCH Comment: MANUAL |
▶CARBURETOR AND CHOKE ASSEMBLY (21 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1364-8783A14 | CARBURETOR ASSEMBLY, COMPLETE |
| 2 | 32-8M0108355 | FUEL LINE, ADAPTOR TO CARBURETOR |
| 3 | 54-68424 | CLAMP, FUEL LINE ATTACHING |
| 4 | 22-98750 | FITTING, FUEL LINE TO ADAPTOR |
| 5 | 22833 | ADAPTOR, CHECK UNIT (FUEL LINE) |
| 6 | 23069 | STEM, CHECK UNIT ADAPTOR |
| 7 | 25-16524 | "O" RING, ADAPTOR STEM |
| 8 | 24-23067T | SPRING, ADAPTOR STEM |
| 9 | 30188 | CUP WASHER, ADAPTOR |
| 10 | 10-37923 | SCREW, ADAPTOR TO BOTTOM COWL (1 1/4") |
| 11 | 65552 | SCREEN, CARBURETOR |
| 12 | 10-69022 | SCREW, SCREEN TO CARBURETOR |
| 13 | 86381 | KNOB, CHOKE |
| 14 | 11-73710 | NUT, CHOKE CABLE TO BOTTOM COWL |
| 15 | 72465 | CABLE, CHOKE |
| 16 | 16-69036 | STUD, CHOKE CABLE TO CARBURETOR |
| 17 | 12-8M0204666 | WASHER, CHOKE CABLE STUD |
| 18 | 54-24836 | CLIP, TRIGGER LEADS |
| 19 | 8M0084613 | "D" WASHER, TRIGGER LEAD CLIP |
| 20 | 11-45076 | NUT, CHOKE CABLE STUD |
| 21 | 11-8M0207775 | NUT, CARBURETOR ATTACHING |
▶CARBURETOR ASSEMBLY, COMPLETE (22 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| -- | 1399-5137 | DIAPHRAGM AND GASKET KIT |
| 1 | 1364-8783A14 | CARBURETOR ASSEMBLY |
| 7 | 1395-9293 | FLOAT |
| 9 | 1399-5127 | FUEL BOWL |
| 11 | 1399-5128 | SCREW, FUEL BOWL TO CARBURETOR |
| 13 | 1399-6141 | INLET NEEDLE AND SPRING |
| 15 | 1399-1765 | JET, MAIN FUEL (.045) |
| 19 | 1399-7274 | CHOKE SHUTTER |
| 20 | 10-23035 | SCREW, CHOKE SHUTTER TO CHOKE SHAFT |
| 21 | 69764 | VENTURI |
| 24 | 1399-5129 | BODY, FUEL PUMP |
| 27 | 1399-5131 | BODY, STRAINER |
| 28 | 1395-808612 | SCREW, STRAINER BODY TO CARBURETOR |
| 29 | 1399-5758 | SCREEN, STRAINER |
| 31 | 99941 | COVER ASSEMBLY, STRAINER (INLET) |
| 34 | 1399-5827 | CHOKE SHAFT |
| 36 | 1399-5133 | THROTTLE SHAFT |
| 37 | 63646 | LEVER, THROTTLE |
| 38 | 1395-6027 | SCREW, THROTTLE LEGER ATTACHING |
| 41 | 10-23178 | SCREW, PLUG - IDLE TUBE |
| 42 | 1399-5759 | THROTTLE SHUTTER |
| 44 | 27-63309 | GASKET, CARBURETOR FLANGE |
▶CLAMP BRACKET ASSEMBLY (19 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1468-5570A3 | CLAMP BRACKET ASSEMBLY (PORT) Comment: WASHER ATTACHED WITH A SCREW |
| 2 | 1467-5571A3 | CLAMP BRACKET ASSEMBLY (STARBOARD) Comment: WASHER ATTACHED WITH A SCREW |
| 3 | 10-77190A3 | THUMB SCREW ASSEMBLY Comment: WASHER ATTACHED WITH A SCREW |
| 4 | 10-768042 | SCREW, THUMB SCREW Comment: WASHER ATTACHED WITH A SCREW |
| 4A | 12-73719 | WASHER, THUMB SCREW Comment: WASHER ATTACHED WITH A SCREW |
| 5 | 12-71421 | WASHER, TILT TUBE - CLAMP TO SWIVEL BRACKET |
| 6 | 96962 | TILT TUBE, CLAMP TO SWIVEL BRACKET |
| 7 | 19-39333 | PLUG, TILT TUBE |
| 8 | 54-8M0085928 | CLIP, SAFETY CHAIN - TILT TUBE |
| 9 | 11-858869 | NUT, TILT TUBE FASTENING |
| 10 | 71420 | HANDLE, CARRYING |
| 11 | 16-71417 | STUD, CLAMP BRACKET |
| 12 | 13-26992 | LOCKWASHER, CLAMP BRACKET STUD |
| 13 | 11-29598 | NUT, CLAMP BRACKET STUD |
| 14 | 24-62143 | SPRING, TILT LOCK PIN |
| 15 | 17-71418A2 | TILT LOCK PIN ASSEMBLY |
| 16 | 10-67982 | BOLT, CLAMP BRACKET TO BOAT |
| 17 | 12-67983 | WASHER, CLAMP BRACKET SCREW |
| 18 | 11-8267098 | NUT, CLAMP BRACKET SCREW |
▶CRANKSHAFT AND MAIN BEARING ASSEMBLY (9 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 421-5275 | CRANKSHAFT |
| 3 | 26-72793 | SEAL, CRANKSHAFT |
| 4 | 550-8122A5 | MAIN BEARING ASSEMBLY (VALVE TYPE) |
| 5 | 17-65855 | PIN, DOWEL - REED LOCATING |
| 6 | 10-56781 | SCREW, MAIN BEARING CLAMPING |
| 7 | 17-20032 | PIN, DOWEL - MAIN BEARING TO BLOCK |
| 8 | 34-31942A1 | REED SET, MATCHED - MAIN BEARING |
| 9 | 34-20053 | REED STOP, MAIN BEARING REED VALVES |
| 10 | 10-27304 | SCREW, REED STOP MOUNTING |
▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (36 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 837-6542A5 | CYLINDER BLOCK AND CRANKCASE ASS'Y |
| 2 | 16-728091 | STUD, BLOCK AND CRANKCASE Comment: TO DRIVE SHAFT HOUSING |
| 3 | 10-657461 | STUD, CARBURETOR MOUNTING |
| 4 | 17-8M0084726 | PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK |
| 5 | 10-69560 | SCREW, ADJ. - THROTTLE CONTROL (1 1/4") |
| 6 | 11-68219 | NUT, THROTTLE CONTROL ADJUSTING SCREW |
| 7 | 22-56759 | FITTING, BLEED DRAIN - CYLINDER BLOCK (TOP) |
| 8 | 32-9938779 | HOSE, BLEED DRAIN (10 1/2") |
| 10 | 21-42863 | CHECK VALVE, BLLED - CRANKCASE (BOTTOM) |
| 11 | 22-996642 | ELBOW, TEEL TALE - CYLINDER BLOCK |
| 12 | 10-76621 | SCREW, CRANKCASE TO CYLINDER BLOCK |
| 13 | 10-73280 | SCREW, CRANKCASE TO CYLINDER BLOCK (1 1/2") |
| 15 | 10-98260 | SCREW, MAIN BEARING LOCKING (5/8") |
| 16 | 14-20091 | TAB WASHER, MAIN BEARING LOCKING SCREW |
| 17 | 15-31412A1 | SHIM, UPPER HOUSING TO CYLINDER BLOCK Comment: (.002-3-5-10) |
| 18 | 1164-6413A1 | BEARING HOUSING ASSEMBLY, UPPER |
| 19 | 30-72961 | BEARING, BALL - UPPER BEARING HOUSING |
| 20 | 31-31410 | BEARING, ROLLER - UPPER BEARING HOUSING |
| 21 | 26-66301 | OIL SEAL, UPPER BEARING HOUSING |
| 22 | 25-20863 | "O" RING, UPPER BEARING HOUSING |
| 23 | 10-76611 | SCREW, UPPER BEARING HOUSING (1/2") |
| 23A | 14-78102 | TAB WASHER, UPPER BEARING HOUSING SCREW |
| 24 | 27-780321 | GASKET, INTAKE COVER |
| 25 | 78033 | COVER, INTAKE |
| 26 | 10-26537 | SCREW, INTAKE COVER TO CYLINDER BLOCK |
| 27 | 1019-7465A1 | COVER ASSEMBLY, CYLINDER BLOCK |
| 28 | 22-390721 | PLUG, CYLINDER BLOCK COVER |
| 29 | 27-41382 | GASKET, CYLINDER BLOCK COVER |
| 30 | 10-8M0214943 | SCREW, CYL. BLOCK COVER TO CYLINDER BLOCK Comment: (1") |
| 32 | 27-78035 | GASKET, CYLINDER BLOCK TO BAFFLE PLATE |
| 33 | 78034 | PLATE, BAFFLE - EXHAUST MANIFOLD |
| 34 | 27-78035 | GASKET, BAFFLE PLATE |
| 35 | 74919T | COVER, EXHAUST MANIFOLD |
| 36 | 10-28668 | SCREW Comment: BAFFLE PLATE AND MANIFOLD COVER MOUNTING (3/4") |
| 37 | 30-72961 | BEARING, BALL - CRANKCASE (LOWER) |
| 38 | 26-66301 | OIL SEAL, CRANKCASE (LOWER) |
▶DRIVE SHAFT HOUSING ASSEMBLY (23 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1558-8453A1 | DRIVE SHAFT HOUSING ASSEMBLY (LONG SHAFT) |
| 2 | 16-66373 | STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING Comment: (2 5/16") |
| 3 | 11-8M0204726 | NUT, DRIVE SHAFT HOUSING STUD Comment: (3/8 - 24) |
| 4 | 11-82670911 | NUT, GEAR HOUSING TO DRIVE SHAFT HOUSING STUD ( Comment: (5/16 - 24) |
| 5 | 72471 | COVER, TRIM - DRIVE SHAFT HOUSING |
| 6 | 10-64652 | SCREW, TRIM COVER TO BOTTOM COWL (1/2") |
| 7 | 32-8M0108355 | HOSE, TELL TALE (9 1/2") |
| 8 | 32-39062 | TUBE, WATER OUTLET Comment: LONG SHAFT |
| 9 | 10-79953Q04 | SCREW, FLUSH - DDRIVE SHAFT HOUSING |
| 10 | 12-191833 | WASHER, SEALING - FLUSH SCREW |
| 11 | 27-39050 | GASKET Comment: ADAPTOR PLATE TO DRIVE SHAFT HOUSING |
| 12 | 11-24652 | NUT Comment: DRIVE SHAFT HOUSING TO POWERHEAD STUDS |
| 13 | 55435 | BLOCK, DRIVE SHAFT Comment: LONG SHAFT |
| 15 | 1559-8448A2 | SADDLE ASSEMBLY |
| 16 | 64076 | BUMPER, THRUST - SADDLE |
| 17 | 79896A1 | MOUNT, LOWER AND UPPER Comment: . |
| 18 | 53-26406 | RING, RETAINING - UPPER AND LOWER MOUNT |
| 19 | 71490 | COVER, LOWER MOUNT |
| 20 | 10-72169 | SCREW, LOWER MOUNT COVER TO MOUNT (7/16") |
| 21 | 71057 | LINK ROD, REVERSE LOCK |
| 22 | 10-65414 | SCREW, CAM RETAINER TO DRIVE SHAFT HOUSING Comment: (3/4") |
| 23 | 65216 | CAM, REVERSE LOCK |
| 24 | 72007 | RETAINER, REVERSE LOCK CAM |
▶ELECTRIC COMPONENTS (27 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 50-78011 | STARTER MOTOR |
| 2 | 10-55511 | SCREW, STARTER MOTOR TO CYLINDER BLOCK Comment: (1 1/4") |
| 3 | 13-8M0204647 | LOCKWASHER, STARTER MOTOR SCREW |
| 6 | 84-76741A1 | WIRE ASSEMBLY, STARTING SWITCH (YELLOW) |
| 7 | 87-73883 | SWITCH, STARTING |
| 8 | 12-30516 | WASHER, STARTING SWITCH |
| 9 | 11-74394 | NUT, STARTING SWITCH |
| 10 | 74515 | PROTECTOR, STARTING SWITCH |
| 11 | 84-72535A4 | CABLE, BATTERY |
| 12 | 25-74444 | GROMMET, BATTERY CABLE |
| 13 | 10-45742 | SCREW, BATTERY CABLE ATTACHING (5/16") |
| 14 | 10-98253 | SCREW, BATTERY CABLE ATTACHING (7/8") |
| 15 | 74367A15 | LIGHTING STATOR ASSEMBLY -BELGIUM |
| 16 | 10-73696 | SCREW, LIGHTING STATOR ATTACHING (1 5/8") |
| 17 | 8M0058226 | RECTIFIER ASSEMBLY |
| 18 | 10-48408 | SCREW, RECTIFIER TO MANIFOLD COVER (1/2") |
| 19 | 23-62769 | SPACER, RECTIFIER SCREW |
| 20 | 11-45076 | NUT, RECTIFIER TERMINAL |
| 21 | 84-61393A6 | WIRE ASSEMBLY, RECTIFIER TO STARTING SWITCH Comment: (RED) |
| 22 | 95845T | VOLTAGE REGUALTOR Comment: BELGIUM |
| 23 | 10-74841 | SCREW, VOLTAGE REGULATOR TO MANIFOLD COVER Comment: BELGIUM: (1") |
| 24 | 23-62769 | SPACER, VOLTAGE REFULATOR SCREW Comment: BELGIUM |
| 25 | 11-45076 | NUT, VOLTAGE REFULATOR TERMINAL Comment: BELGIUM |
| 26 | 84-74725A1 | HARNESS ASSEMBLY, VOLTAGE REGULATOR Comment: BELGIUM: (BLACK/RED) |
| 27 | 71663 | PLUG, HARNESS -BELGIUM |
| 28 | 74361 | PLUG, HARNESS TO BOTTOM COWL -BELGIUM |
| 29 | 84-65017A4 | HARNESS ASSEMBLY, LIGHTING (EXTERNAL) -BELGIUM |
▶FLYWHEEL AND IGNITION COIL (14 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 251-6105A1 | FLYWHEEL ASSEMBLY (BELGIUM) |
| 2 | 28-50094 | KEY, FLYWHEEL DRIVE |
| 3 | 12-36245 | WASHER, FLYWHEEL NUT |
| 4 | 11-20696 | NUT, FLYWHEEL |
| 5 | 339-5748A | COIL ASSEMBLY, IGNITION |
| 6 | 13-26996 | LOCKWASHER, IGNITION COIL TERMINAL |
| 7 | 11-4506 | NUT, IGNITION COIL TERMINAL |
| 8 | 66355 | COVER, IGNITION COIL |
| 9 | 10-72074 | SCREW, COIL COVER TO REAR SUPPORT BRACKET Comment: (4 5/8") |
| 10 | 11-20110 | NUT, COIL COVER SCREW |
| 11 | 84-813715A1 | LEAD ASSEMBLY, HIGH TENSION |
| 12 | 332-2854T01 | NIPPLE, IGNITION COIL |
| 13 | 85-63709A1 | PROTECTOR ASSEMBLY, SPARK PLUG Comment: . |
| 14 | 33-896329833 | SPARK PLUG (AC#V40FFK) |
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (45 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 1630-7360A13 | GEAR HOUSING ASS'Y, COMP.(LONG SHAFT) Comment: MACHINED FOR ANODE KIT |
| 1 | 1630-7360A11 | GEAR HOUSING ASS'Y Comment: MACHINED FOR ANODE KIT |
| 2 | 16-58138 | STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING Comment: (3 7/16") |
| 3 | 16-58136 | STUD, WATER PUMP HOUSING TO GEAR HOUSING Comment: (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 | 23-86215 | WASHER, NYLON - INTAKE TUBE SEAL |
| 8 | 35-33425 | SCREEN, WATER INTAKE |
| 9 | 10-28642 | SCREW, WATER INTAKE SCREEN TO GEAR HOUSING |
| 10 | 10-79953Q04 | SCREW, GREASE FILLER HOLE |
| 11 | 12-191833 | WASHER, GREASE FILLER HOLE SCREW |
| 12 | 19643 | WASHER, GREASE VENT HOLE SCREW |
| 13 | 10-28653 | SCREW, GREASE VENT HOLE |
| 14 | 71658A1 | SHAFT ASSEMBLY, SHIFT (LONG SHAFT) |
| 15 | 53-22899 | RING, RETAINING - SHIFT SHAFT |
| 16 | 23-30676A1 | BUSHING ASSEMBLY, SHIFT SHAFT |
| 17 | 25-26802 | "O" RING, SHIFT SHAFT BUSHING |
| 18 | 26-30696 | OIL SEAL, SHIFT SHAFT BUSHING |
| 19 | 10-39149 | SCREW, SHIFT SHAFT BUSHING |
| 20 | 43-98696 | GEAR, PINION |
| 21 | 14-30377 | TAB WASHER, PINION GEAR TO DRIVE SHAFT SCREW |
| 22 | 10-30376 | SCREW, PINION GEAR TO DRIVE SHAFT |
| 23 | 45-75033 | DRIVE SHAFT (LONG SHAFT) |
| 24 | 15-30527A1 | SHIM ASSEMBLY, BALL BEARING TO GEAR HOUSING Comment: (.002-3-5-10) |
| 25 | 30-70944 | BEARING, BALL - DRIVE SHAFT |
| 26 | 53-30523 | RING, RETAINING - BALL BEARING TO DRIVE SHAFT |
| 27 | 15-30527A1 | SHIM ASSEMBLY, BALL BEARING TO GEAR HOUSING Comment: (.002-3-5-10) |
| 28 | 46-70941T01 | WATER PUMP HOUSING ASSEMBLY |
| 29 | 25-29439 | "O" RING, WATER PUMP HOUSING |
| 30 | 26-30900T | OIL SEAL, WATER PUMP HOUSING |
| 31 | 26-33613 | SEAL, WATER INTAKE TUBE |
| 32 | 32-34293 | TUBE, WATER INTAKE |
| 33 | 70977T | INSERT, WATER PUMP HOUSING |
| 34 | 28-8M0032835 | KEY, IMPELLER DRIVE |
| 35 | 47-89981 | IMPELLER, WATER PUMP |
| 36 | 46895 | PLATE, FACE - WATER PUMP HOUSING TO Comment: WATER PUMP COVER |
| 37 | 93224A1 | WATER PUMP COVER ASSEMBLY |
| 38 | 26-36558 | SEAL, WATER PUMP COVER |
| 39 | 23-13127 | WASHER, NYLON - WATER PUMP COVER |
| 40 | 26-30913 | OIL SEAL, WATER PUMP COVER |
| 41 | 12-20533 | WASHER, WATER PUMP HOUSING AND COVER STUDS |
| 42 | 11-35888 | NUT, WATER PUMP HOUSING AND COVER STUDS |
| 43 | 25-30526 | RING, RUBBER - CENTRIFUGAL SLINGER Comment: (DRIVE SHAFT) |
| 44 | 23-31792T | SLEEVE, GUIDE - WATER INLET TUBE |
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (27 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 1630-7360A13 | GEAR HOUSING ASS'Y- COMP.(LONG SHAFT) Comment: MACHINED FOR ANODE KIT |
| -- | 12-79553 | WASHER, PROPELLER SHAFT |
| 1 | 1630-7360A11 | GEAR HOUSING ASS'Y - MACHINED FOR ANODE KIT |
| 46 | 44434 | CAM, SHIFT |
| 47 | 31334 | FOLLOWER, SHIFT CAM |
| 48 | 24-76298 | SPRING, COMPRESSION - CAM FOLLOWER |
| 49 | 15-30522A1 | SHIM ASSEMBLY, BALL BEARING TO HOUSING Comment: (.002-3-5-10) |
| 50 | 30-21889 | BEARING, BALL - FORWARD GEAR |
| 51 | 43-48577A3 | FORWARD GEAR |
| 52 | 31-22458 | BEARING, ROLLER - FORWARD GEAR |
| 53 | 52-63314 | RATCHET, SLIDING CLUTCH |
| 54 | 53-32449 | RING, RETAINING - CROSS PIN |
| 55 | 17-30535 | PIN, CROSS - RATCHET TO PROPELLER SHAFT |
| 56 | 44-75667A2 | SHAFT ASSEMBLY, PROPELLER |
| 57 | 43-63316 | REVERSE GEAR |
| 58 | 71479 | SLEEVE, THRUST - REVERSE GEAR |
| 59 | 30-21889 | BEARING, BALL - REVERSE GEAR |
| 60 | 15-30532A1 | SHIM ASSEMBLY, THRUST WASHER TO HOUSING Comment: (.002-3-5-10) |
| 61 | 25-30529 | "O" RING, BEARING CARRIER |
| 62 | 72673T1 | BEARING CARRIER ASSEMBLY |
| 63 | 31-22458 | BEARING, ROLLER - BEARING CARRIER |
| 64 | 26-66022 | OIL SEAL, BEARING CARRIER |
| 66 | 86236 | COVER, GEAR HOUSING |
| 67 | 86665A1 | COLLAR, PROPELLER GUIDE |
| 68 | 48-65012A1 | PROPELLER ASS'Y, 8 3/4" DIA., 7" PITCH, 3 BLADES Comment: (NYLON) |
| 69 | 11-64075A1 | SPACER, PROPELLER SHAFT Comment: (PART OF PROPELLER SHAFT ASSEMBLY) |
| 70 | 11-64075A1 | NUT, PROPELLER |
▶IGNITION COMPONENTS (17 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 339-5209A9 | STATOR ASSEMBLY |
| 2 | 10-66707 | SCREW, STATOR TO END CAP (7/8") |
| 3 | 10-35400 | SCREW, STATOR TO END CAP (3/8") |
| 4 | 339-6120A1 | COIL ASSEMBLY (1 3/4" AND 3 1/2" LEADS) |
| 5 | 54-59538 | CLIP, COIL RETAINING |
| 6 | 54-65927 | CLIP, COIL RETAINING |
| 7 | 86-85365 | TERMINAL BLOCK, STATOR |
| 8 | 10-38055 | SCREW, TERMINAL BLOCK TO STATOR (5/8") |
| 9 | 11-46438 | NUT, TERMINAL BLOCK SCREW |
| 11 | 338-7283A3 | TRIGGER HOUSING ASSEMBLY |
| 14 | 42501 | LINK, TRIGGER HOUSING TO THROTTLE LEVER |
| 15 | 11-65110 | NUT, PUSH - LINK TO TRIGGER HOUSING |
| 16 | 339-6222A10 | SWITCH BOX |
| 17 | 10-69022 | SCREW, SWITCH ATTACHING (1/2") |
| 18 | 12-8M0204666 | WASHER, SWITCH BOX ATTACHING SCREW |
| 19 | 61990 | STA-STRAP |
| 20 | 10-45218 | SCREW, GROUND LEAD TO CYLINDER BLOCK |
▶PISTON AND CONNECTING ROD ASSEMBLY (9 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 608-7395A2 | CONNECTING ROD ASSEMBLY |
| 2 | 10-87374 | SCREW, CONNECTING ROD |
| 3 | 29-26815 | BEARING, NEEDLE - CRANKPIN |
| 4 | 11-20061 | NUT, CONNECTING ROD SCREW |
| 5 | 12-65967 | WASHER, NEEDLE BEARING RETAINING |
| 6 | 29-31505 | BEARING, NEEDLE - PISTON PIN |
| 7 | 719-7391T3 | PISTON AND PISTON PIN ASSEMBLY |
| 8 | 40-21666 | LOCK RING, PISTON PIN |
| 9 | 39-21665A12 | RING, PISTON |
▶SHIFT CONTROL LINKAGE (16 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 93730T | HANDLE, SHIFT CONTROL (ELECTRIC) |
| 2 | 12-8M0204649 | WASHER, SHIFT CONTROL SHAFT |
| 3 | 11-826709109 | NUT, SHIFT HANDLE TO SHIFT CONTROL SHAFT |
| 4 | 23-66375 | BUSHING, NYLON - SHIFT CONTROL SHAFT |
| 5 | 74350 | LEVER, SHIFT CONTROL (REMOTE) |
| 6 | 17-25905 | PIN, SHIFT LEVER TO SHIFT CONTROL SHAFT |
| 7 | 66379 | SHAFT, SHIFT CONTROL |
| 8 | 43-66377 | GEAR, SECTOR - SHIFT CONTROL SHAFT (HORIZONTAL) |
| 9 | 12-8M0204649 | WASHER, SHIFT CONTROL SHAFT |
| 10 | 11-8267089 | NUT, SECTOR GEAR TO SHIFT CONTROL SHAFT |
| 11 | 24-39627 | SPRING, DETENT - SHIFT CONTROL LEVER |
| 12 | 39601 | PLATE, DETENT SPRING |
| 13 | 10-25764 | SCREW, PLATE AND SPRING TO ADAPTOR PLATE Comment: (1/2") |
| 14 | 23-27132 | BUSHING, NYLON - UPPER SHIFT SHAFT |
| 15 | 43-86686A1 | GEAR, SECTOR - SHIFT SHAFT |
| 16 | 71660 | SHIFT SHAFT |
▶STEERING HANDLE ASSEMBLY (20 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 60850A6 | STEERING HANDLE ASSEMBLY, COMPLETE |
| 1 | 60854 | GRIP, HANDLE |
| 2 | 62251 | CAP, HANDLE |
| 3 | 66393 | SHAFT, THROTTLE |
| 4 | 66394A1 | HANDLE, THROTTLE SHAFT |
| 5 | 17-46152 | PIN, STEERING HANDLE |
| 6 | 12-62252 | WASHER, THROTTLE HANDLE TO STEERING ARM |
| 7 | 60850 | ARM, STEERING HANDLE |
| 8 | 43-60852 | GEAR, BALL - THROTTLE SHAFT |
| 9 | 17-27088 | PIN, BALL GEAR GO THROTTLE SHAFT |
| 10 | 48003 | PIVOT, STEERING HANDLE TO BRACKET |
| 11 | 15-48002015 | SHIM, STEERING HANDLE PIVOT TO BRACKET (.015) |
| 12 | 10-64074 | SCREW, STEERING HANDLE TO ARM BRACKET (5/8") |
| 13 | 60857A2 | UNIVERSAL JOINT ASSEMBLY |
| 14 | 43-60852 | GEAR, BALL - UNIVERSAL JOINT |
| 15 | 17-77564 | PIN, BALL GEAR TO UNIVERSAL JOINT |
| 16 | 96130A1 | BRACKET ASSEMBLY, STEERING ARM |
| 17 | 10-62233 | SCREW Comment: DETENT SPRING TO STEERING ARM BRACKET (5/8") |
| 18 | 24-72847 | SPRING, DETENT - STEERING HANDLE |
| 19 | 10-78038 | SCREW, STEERING ARM BRACKET TO SADDLE |
▶SWIVEL BRACKET ASSEMBLY (29 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1471-7324A1 | SWIVEL BRACKET ASSEMBLY |
| 2 | 22-8M0169589 | FITTING, GREASE - SWIVEL BRACKET |
| 4 | 23-64028 | BUSHING, SWIVEL BRACKET |
| 5 | 23-26841 | BUSHING, NYLON - REVERSE LOCK LEVER ROD |
| 6 | 71419 | ROD, REVERSE LOCK TO SWIVEL BRACKET |
| 7 | 18-45882 | COTTER PIN, REVERSE LOCK LEVER TO ROD |
| 8 | 63628T | LEVER, REVERSE LOCK |
| 9 | 61007 | RETAINER, ROD - REVERSE LOCK |
| 10 | 63559T | BRACKET, TROLL |
| 11 | 24-63630 | SPRING, EXTENSION - TROLL BRACKET |
| 12 | 63551 | GUIDE, SPRING |
| 13 | 17-25319 | ROLL PIN, SPRING GUIDE |
| 14 | 79744 | LEVER, CONTROL - TROLL BRACKET |
| 15 | 13-63631 | WASHER, WAVE - TROLL BRACKET LEVER |
| 16 | 66559 | TUBE, SWIVEL BRACKET TO SADDLE |
| 17 | 77334 | CO-PILOT DISC |
| 18 | 10-78038 | SCREW, CO-PILOT DISC TO SADDLE |
| 20 | 20203 | DISC, FRICTION Comment: CLAMP PLATE AND SWIVEL BRACKET |
| 21 | 72845A1 | PLATE ASSEMBLY, CLAMP - CO-PILOT |
| 22 | 10-36154 | SCREW, CLAMP PLATE ADJUSTING |
| 23 | 12-35462 | WASHER, CLAMP PLATE ADJUSTING SCREW |
| 24 | 63310A1 | LEVER ASSEMBLY, TILT STOP |
| 25 | 10-41433 | SCREW, TILT STOP LEVER |
| 26 | 13-31030 | WASHER, WAVE - LEVER ANCHOR SCREW |
| 27 | 11-35888 | NUT, TILT STOP LEVER SCREW |
| 29 | 72794 | STOP, REVERSE LOCK |
| 30 | 10-71056 | SCREW, REVERSE STOP TO SWIVEL BRACKET |
| 31 | 13-26992 | LOCKWASHER, REVERSE STOP SCREW |
| 32 | 12-71055 | WASHER, REVERSE STOP SCREW |
▶THROTTLE CONTROL LINKAGE (15 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 43-60856 | GEAR, HORIZONTAL - THROTTLE CONTROL SOCKET |
| 2 | 60885T | HOUSING, THROTTLE CONTROL |
| 3 | 10-69069 | SCREW Comment: THROTTLE CONTROL HOUSING TO BOTTOM COWL (3/4") |
| 4 | 63308A1 | FOLLOWER ASSEMBLY, NEUTRAL SPEED LIMITER |
| 5 | 10-20653 | SCREW, LIMITER FOLLOWER TO BOTTOM COWL Comment: (1 1/8") |
| 6 | 12-8M0204649 | WASHER, SPEED LIMITER FOLLOWER SCREW |
| 6A | 24-39042 | SPRING, NEUTRAL SPEED LIMITER FOLLOWER |
| 7 | 23-63320 | BUSHING, SPEED LIMITER FOLLOWER SCREW |
| 8 | 36017 | STOP, NEUTRAL SPEED LIMITER |
| 9 | 10-28710 | SCREW Comment: NEUTRAL SPEED LIMITER SOTP TO FOLLOWER (5/8") |
| 10 | 12-24676 | WASHER, NEUTRAL SPEED LIMITER STOP SCREW |
| 11 | 43-60858 | GEAR, THROTTLE CONTROL |
| 12 | 15-64653A1 | SHIM ASSEMBLY, GEAR AND SHAFT (LOWER) |
| 13 | 66374A2 | LEVER ASSEMBLY, THROTTLE CONTROL |
| 14 | 17-76207 | PIN, ROLL Comment: THROTTLE CONTROL LEVER TO CONTROL SHAFT |
▶TOP COWL AND STARTER ASSEMBLY (48 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 2160-7264A10 | TOP COWL ASSEMBLY |
| 2 | 654893 | SEAL, TOP COWL (16 1/2") |
| 3 | 66942 | BLANKET, TOP COWL - TOP |
| 4 | 85544 | BLANKET, TOP COWL - SIDE |
| 5 | 69522 | BLANKET, TOP COWL - FRONT |
| 6 | 25-39086 | GROMMET, COWL LATCH - TOP COWL |
| 7 | 71502 | COVER, FRONT |
| 8 | 11-65517 | NUT, SPEED - FRONT COVER TO COWL |
| 9 | 69346 | BUMPER, COWL - REAR |
| 10 | 17-72856 | PIN, TOP COWL CATCH |
| 11 | 12-65567 | WASHER, TOP COWL CATCH (LOWER) |
| 11A | 12-35280 | WASHER, TOP COWL CATCH (UPPER) |
| 12 | 24-79351 | SPRING, COMPRESSION - COWL CATCH |
| 13 | 11-8M0207775 | NUT, COWL CATCH TO TOP COWL |
| 14 | 91871A1 | STARTER HOUSING ASSEMBLY |
| 15 | 77859 | INSERT, ROPE GUIDE - STARTER HOUSING |
| 15A | 77860 | RING, RETAINING - ROPE GUIDE INSERT |
| 16 | 654991 | SEAL, STARTER HOUSING TO TOP COWL |
| 17 | 1395-7262 | SCREW, STARTER HOUSING TO CRANKCASE (1") |
| 18 | 55860 | PULLEY, STARTER CABLE |
| 19 | 10-28789 | SCREW, CABLE PULLEY TO STARTER HOUSING Comment: (3/4") |
| 20 | 12-22887 | WASHER, CABLE PULLEY SCREW |
| 21 | 23-309772 | SPACER, CABLE PULLEY |
| 22 | 14-20165 | TAB WASHER, SHEAVE SHAFF NUT |
| 23 | 11-20166 | NUT, SHEAVE SHAFT (LEFT HAND THREAD) |
| 24 | 20155 | RETAINER, STARTER SPRING |
| 25 | 24-29340T02 | SPRING, STARTER REWIND |
| 26 | 23-28912 | BUSHING, STARTER SPRING GUIDE |
| 27 | 50-93696A2 | STARTER SHEAVE ASSEMBLY |
| 28 | 17-22896 | PIN, RETAINER - STARTER CABLE |
| 29 | 74359 | SHAFT, INTERLOCK |
| 30 | 74353 | LEVER, LOCK |
| 31 | 74351 | LEVER, FOLLOWER |
| 32 | 17-38489 | ROLL PIN, INTERLOCK SHAFT |
| 33 | 23-26856 | BUSHING, NYLON - INTERLOCK SHAFT |
| 34 | 24-74347 | SPRING, TORSION - INTERLOCK SHAFT |
| 35 | 13-36206 | WASHER, WAVE - STARTER PAWL |
| 36 | 30596 | PAWL, STARTER |
| 37 | 23-28919 | BUSHING, NYLON - SHEAVE SHAFT SPACER |
| 38 | 23-61005 | SPACER, SHEAVE SHAFT |
| 39 | 26179 | RETAINER, SHEAVE SHAFT TO STARTER SHEAVE |
| 40 | 12-35559 | WASHER, SHEAVE SHAFT RETAINER |
| 41 | 13-20160 | WASHER, WAVE - RETAINER TENSION |
| 42 | 30595 | PLATE, RETAINER - STARTER PAWL |
| 43 | 35558 | SHAFT, SHEAVE |
| 44 | 50-12066Q10 | STARTER CABLE ASSEMBLY |
| 45 | 77998 | HANDLE, STARTER CABLE |
| 46 | 79470A1 | RETAINER ASSEMBLY Comment: STARTER CABLE AND HANDLE |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Mercury 75 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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