🔎 Honda BF75 Resource Center — Browse exploded parts diagrams (24 diagrams), specifications, and maintenance tips below. Scroll down to shop replacement parts for your Honda BF75.
The Honda BF75 is a reliable 75-horsepower four-stroke outboard engine that has earned a strong reputation among boating enthusiasts for its smooth performance and exceptional fuel efficiency. Designed for mid-size fishing boats, pontoons, and center consoles in the 17- to 21-foot range, the BF75 features Honda's advanced BLAST (Boosted Low Speed Torque) system and programmed fuel injection for quick acceleration and dependable power delivery. Whether you are heading offshore for a weekend fishing trip or cruising coastal waterways, this engine delivers consistent torque across the RPM range. Finding the right OEM replacement parts for your Honda BF75 is essential to keeping it running at peak performance. At womarine.com, we carry a comprehensive selection of aftermarket marine parts, complete with exploded parts diagrams that make identifying the exact component you need simple and fast. Whether you are tackling a DIY boat engine repair or performing routine seasonal maintenance, our catalog is organized to help you locate genuine and compatible parts by model and serial number with confidence.
Quick Reference Specifications
| Specification |
Value |
| Engine Type |
4-Stroke SOHC, 4-Cylinder |
| Displacement |
1496 cc (91.3 cu in) |
| Bore x Stroke |
73 mm x 89.4 mm |
| Spark Plug (Type & Gap) |
NGK IMR9C-9HES / Gap: 0.8-0.9 mm |
| Engine Oil Capacity |
4.5 L (4.8 US qt) |
| Recommended Engine Oil |
SAE 10W-30 (API SJ or higher) |
| Gear Case Oil Capacity |
680 mL (23.0 US fl oz) |
| Idle Speed (in gear) |
750 ± 50 RPM |
| Full Throttle RPM Range |
5000-6000 RPM |
| Fuel |
Unleaded Gasoline (87 Octane or higher) |
Always verify specifications against your owner's manual for your specific serial number range.
Common Issues & Recommended Parts
Even the most dependable outboards require attention over time. Below are the most frequently reported issues on the Honda BF75 and the parts that will help you resolve them quickly.
-
Hard Starting or Rough Idle: Fouled or worn spark plugs are a common culprit, especially after extended idle time or infrequent use. → Recommended: Spark Plug Set (NGK IMR9C-9HES)
-
Overheating Warning: A failing thermostat or clogged water passages can trigger the overheat alarm. Inspect the water pump impeller and thermostat regularly. → Recommended: Water Pump Impeller Kit & Thermostat
-
Fuel System Hesitation: Degraded fuel lines, a clogged fuel filter, or dirty injectors can cause sputtering under load. → Recommended: Fuel Filter Element & Fuel Line Assembly
-
Gear Oil Leaks: Worn lower unit seals allow water intrusion into the gear case, leading to corrosion and gear damage if left unchecked. → Recommended: Lower Unit Seal Kit
-
Trim & Tilt Malfunction: Slow or unresponsive trim operation often points to low hydraulic fluid or a worn trim motor. → Recommended: Trim Motor Assembly & Hydraulic Fluid
Parts Diagrams & OEM Part Numbers
Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Honda BF75.
▶C.D.I. IGNITION COIL /FLYWHEEL (14 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
30500-ZV8-G01 |
COIL ASSY., C.D.I. IGNITION |
| 3 |
30540-881-732 |
COIL ASSY., EXCITER |
| 4 |
30700-881-010 |
CAP ASSY., NOISE SUPPRESSOR |
| 5 |
31100-881-000B |
FLYWHEEL *NH1* (BLACK) |
| 8 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 10 |
90124-881-000 |
BOLT, FLANGE (6X35) |
| 11 |
90201-881-000 |
NUT, SPECIAL (14MM) |
| 13 |
91404-881-000 |
CLIP, WIRE |
| 14 |
92101-06012-0A |
BOLT, HEX. (6X12) |
| 15 |
93500-06025-0A |
SCREW, PAN (6X25) |
| 16 |
93500-06050-0B |
SCREW, PAN (6X50) |
| 17 |
94001-05330-0S |
NUT, HEX. (5MM) |
| 18 |
94001-06020-0S |
NUT, HEX. (6MM) |
| 19 |
94111-05800 |
WASHER, SPRING (5MM) |
▶CAMSHAFT/VALVE (13 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
12023-921-000 |
GUIDE, VALVE |
| 4 |
14431-881-000 |
ARM, VALVE ROCKER (NOT AVAILABLE) |
| 5 |
14451-881-000 |
SHAFT, VALVE ROCKER ARM |
| 6 |
14481-881-000 |
SPRING, VALVE ROCKER ARM |
| 7 |
14482-881-000 |
COLLAR A, VALVE ROCKER ARM |
| 8 |
14483-881-000 |
COLLAR B, VALVE ROCKER ARM |
| 10 |
14721-881-000 |
VALVE, EX. |
| 11 |
14753-921-010 |
SPRING, VALVE |
| 13 |
14771-935-810 |
RETAINER, VALVE SPRING |
| 14 |
14772-881-000 |
ROTATOR, VALVE |
| 15 |
14775-921-000 |
SEAT, VALVE SPRING |
| 16 |
14781-235-000 |
COTTER, VALVE (NOT AVAILABLE) |
| 19 |
90453-235-000 |
WASHER, THRUST (16MM) |
▶CARBURETOR/AIR GUIDE (8 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16010-881-003 |
GASKET SET |
| 2 |
16011-881-741 |
VALVE SET, FLOAT |
| 4 |
16016-881-003 |
SCREW SET A |
| 5 |
16024-881-003 |
SCREW SET, DRAIN |
| 10 |
16201-881-850 |
GASKET, CARBURETOR |
| 18 |
93892-04012-08 |
SCREW-WASHER (4X12) |
| 19 |
95001-35003-60M |
BULK HOSE, FUEL (3.5X3000) (3.5X140) |
| 20 |
99101-124-0880 |
JET, MAIN (#88) |
▶CYLINDER/CYLINDER HEAD (16 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
11210-881-850 |
GASKET, OIL PAN |
| 6 |
12391-881-000 |
GASKET, HEAD COVER |
| 8 |
37200-935-004 |
SWITCH, OIL PRESSURE |
| 9 |
37201-881-000 |
WIRE, OIL PRESSURE SWITCH |
| 10 |
37202-935-004 |
WASHER (4MM) |
| 11 |
90017-935-000 |
BOLT, HEAD (8X70) |
| 12 |
90018-935-000 |
BOLT, HEAD (8X94) |
| 13 |
90019-881-000 |
BOLT, HEX. (8X55) |
| 16 |
90124-881-000 |
BOLT, FLANGE (6X35) |
| 17 |
90126-881-000 |
BOLT, FLANGE (8X45) |
| 18 |
90402-822-000 |
WASHER, HEAD (8MM) |
| 20 |
91206-921-000 |
OIL SEAL (16X28X6) |
| 21 |
15142-PH3-003 |
O-RING (10.8X2.4) (ARAI) |
| 24 |
93500-04006-3J |
SCREW, PAN (4X6) |
| 25 |
94301-10160 |
PIN, DOWEL (10X16) |
| 26 |
98066-55716 |
SPARK PLUG (DR-5HS) (NGK) |
▶EXTENSION CASE/GEAR CASE /SHIFT ROD (16 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
24312-881-000 |
JOINT, GEARSHIFT ROD |
| 5 |
24341-ZV4-300 |
ROD, PUSH |
| 9 |
41103-935-003 |
BEARING, NEEDLE (15X21X16) |
| 12 |
41106-935-812 |
METAL, ANODE |
| 19 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 21 |
90518-921-000 |
WASHER, PLAIN (8MM) |
| 23 |
90855-921-300 |
PLUG, SEALING (10MM) |
| 24 |
91253-921-003 |
SEAL, WATER (6MM) |
| 25 |
91303-377-000 |
O-RING (13.8X2.5) |
| 26 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 27 |
92101-06016-0B |
BOLT, HEX. (6X16) |
| 30 |
92101-08050-4J |
BOLT, HEX. (8X50) |
| 31 |
94101-06200 |
WASHER, PLAIN (6MM) |
| 32 |
94301-10140 |
PIN A, DOWEL (10X14) |
| 33 |
94305-25122 |
PIN, SPRING (2.5X12) |
| 34 |
96220-25118 |
ROLLER (2.5X11.8) |
▶FUEL PUMP (10 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
16016-935-004 |
BOLT SET, HOLDING |
| 5 |
16182-935-014 |
ROD, PUSH |
| 6 |
16194-935-004 |
SCREEN, FUEL STRAINER |
| 8 |
16700-935-024 |
PUMP ASSY., FUEL (MSDS) |
| 11 |
90602-921-000 |
CLIP, TUBE (B8) |
| 13 |
91403-881-000 |
CLIP B, CORD |
| 14 |
93500-06020-0H |
SCREW, PAN (6X20) |
| 15 |
93892-04016-08 |
SCREW-WASHER (4X16) |
| 16 |
95001-45003-60M |
BULK HOSE, FUEL (4.5X3000) (4.5X400) |
| 17 |
95001-45003-60M |
BULK HOSE, FUEL (4.5X3000) (4.5X400) |
▶FUEL TANK/SUB TANK (11 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
061C7-881-711H |
TANK KIT, FUEL *R8* (BRIGHT RED) |
| 4 |
16900-881-000 |
JOINT A, FUEL |
| 18 |
17650-921-003ZB |
CONNECTOR, FUEL *NH1* (BLACK) |
| 19 |
17661-921-010 |
BULB, PRIMER |
| 21 |
17680-921-000 |
VALVE, OUTLET |
| 29 |
17703-921-010 |
BAND, TUBE CLIP (20MM) |
| 33 |
87571-881-671 |
MARK, TANK CAUTION (ENGLISH/FRENCH) |
| 35 |
87574-881-670 |
MARK, TANK (FRENCH) |
| 37 |
91353-921-310 |
O-RING (5.5MM) |
| 38 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 39 |
92101-06016-0B |
BOLT, HEX. (6X16) |
▶HANDLEBAR/THROTTLE CABLE (5 parts)
| Ref |
OEM Part # |
Part Name |
| 6 |
17936-921-000 |
WASHER, PIVOT |
| 8 |
24621-921-010 |
BUSH, SHAFT |
| 30 |
90107-881-000 |
BOLT, SLOTTED (4X6) |
| 34 |
92101-06012-0B |
BOLT, HEX. (6X12) |
| 35 |
92101-06012-4J |
BOLT, HEX. (6X12) |
▶INLET MANIFOLD/C.D.I. UNIT (9 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
12516-881-003 |
GASKET, EX. CHAMBER |
| 3 |
12517-881-003 |
GASKET, EX. CHAMBER |
| 5 |
17100-881-740ZA |
MANIFOLD, IN. *NH8* (DARK GRAY) |
| 7 |
19300-881-741 |
THERMOSTAT ASSY. |
| 8 |
19302-921-003 |
RUBBER, THERMOSTAT |
| 12 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 15 |
90602-921-000 |
CLIP, TUBE (B8) |
| 16 |
90604-ZV0-000 |
CLIP, TUBE (B12) |
| 19 |
94001-06020-0S |
NUT, HEX. (6MM) |
▶MOUNT FRAME/UPPER MOUNT RUBBER (8 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
50112-921-300 |
SPRING, HANDLE |
| 4 |
50130-881-000 |
RUBBER, MOUNTING (UPPER) |
| 8 |
90513-921-000 |
WASHER (10MM) |
| 9 |
90514-921-000 |
WASHER (8MM) |
| 10 |
90518-921-000 |
WASHER, PLAIN (8MM) |
| 11 |
92101-06014-4J |
BOLT, HEX. (6X14) |
| 13 |
94002-08490-0S |
NUT, HEX. (8MM) |
| 14 |
94305-60503 |
PIN, SPRING (6X50) |
▶OIL CASE/ENGINE COVER (11 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
17918-881-000 |
GROMMET C, OIL CASE |
| 4 |
18222-881-000 |
BAND, EX. SEAL |
| 25 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 28 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 30 |
90512-921-010 |
WASHER (6MM) |
| 33 |
91305-PE2-003 |
O-RING (9.8X1.9) |
| 34 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 35 |
92101-06016-4J |
BOLT, HEX. (6X16) |
| 38 |
93500-04010-0G |
SCREW, PAN (4X10) |
| 39 |
94001-04390-0S |
NUT, HEX. (4MM) (NOT AVAILABLE) |
| 40 |
94301-08140 |
PIN, DOWEL (8X14) |
▶OIL PUMP/OIL FILTER /EXHAUST PIPE (12 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
15410-881-000 |
FLANGE, OIL FILTER |
| 9 |
15473-881-000 |
VALVE, CHECK |
| 10 |
15474-881-000 |
SPRING, CHECK VALVE |
| 11 |
15611-921-000 |
CAP, OIL (YELLOW) |
| 18 |
90120-881-000 |
BOLT, FLANGE (6X16) |
| 20 |
90478-700-000 |
WASHER A (6MM) |
| 21 |
91306-PJ4-000 |
O-RING (6.8X1.9) |
| 22 |
91301-805-000 |
O-RING (26X2.7) |
| 24 |
92201-06028-0B |
BOLT, HEX. (6X28) |
| 25 |
93500-05010-0A |
SCREW, PAN (5X10) |
| 26 |
94101-05000 |
WASHER, PLAIN (5MM) |
| 27 |
95002-01120 |
CLIP, TUBE (A12) |
▶PISTON/CRANKSHAFT (7 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
13111-881-000 |
PIN, PISTON |
| 7 |
90011-881-000 |
BOLT, CONNECTING ROD |
| 8 |
90402-921-000 |
WASHER (6MM) |
| 10 |
91201-881-003 |
OIL SEAL A (30X42X7) |
| 11 |
91202-881-003 |
OIL SEAL B (30X42X7) |
| 12 |
94401-16150 |
KEY, WOODRUFF (16X15) |
| 13 |
94601-14000 |
CLIP, PISTON PIN (14MM) |
▶PROPELLER SHAFT/PROPELLER (0 parts)
▶RECOIL STARTER (8 parts)
| Ref |
OEM Part # |
Part Name |
| 5 |
28443-935-000 |
PLATE, FRICTION |
| 7 |
28445-935-000 |
WASHER |
| 9 |
28451-921-000 |
SPRING, RECOIL STARTER |
| 11 |
28454-921-000 |
GUIDE, ROPE |
| 12 |
28455-881-006 |
PLATE, SEAL |
| 19 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 20 |
92101-06025-0B |
BOLT, HEX. (6X25) |
| 21 |
94111-06000 |
WASHER, SPRING (6MM) |
▶REMOTE CONTROL BRACKET (6 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
17941-881-811 |
STOPPER, THROTTLE ARM |
| 4 |
24701-881-812 |
LEVER, GEARSHIFT |
| 5 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 6 |
92101-05010-4J |
BOLT, HEX. (5X10) |
| 7 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 8 |
94251-06000 |
PIN, LOCK (6MM) |
▶SAFETY SWITCH/VERTICAL STARTER (10 parts)
| Ref |
OEM Part # |
Part Name |
| 6 |
28481-881-810 |
IDLER, VERTICAL STARTER |
| 7 |
28482-881-810 |
GUIDE, ROPE |
| 8 |
28483-881-810 |
BRACKET, VERTICAL STARTER |
| 15 |
90407-920-000 |
WASHER, SPRING (6MM) |
| 16 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 17 |
90513-921-000 |
WASHER (10MM) |
| 18 |
91402-881-000 |
PIN, LOCK (10MM) |
| 19 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 20 |
93500-06012-4J |
SCREW, PAN (6X12) |
| 21 |
94001-06490-0S |
NUT, HEX. (6MM) |
▶SHIFT SHAFT/CARRYING HANDLE/COVER LOCK LEVER (23 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
17951-921-030 |
KNOB, CHOKE |
| 6 |
24610-881-010 |
SHAFT, SHIFT |
| 8 |
24621-921-010 |
BUSH, SHAFT |
| 19 |
37210-ZV4-003 |
LAMP ASSY., INDICATOR |
| 21 |
63201-935-000ZB |
LEVER, COVER LOCK *B9* (ATLANTIS BLUE) (NOT AVAILABLE) |
| 24 |
63205-920-000 |
BUSH, COVER LOCK |
| 26 |
90124-881-000 |
BOLT, FLANGE (6X35) |
| 27 |
90302-921-000 |
NUT, HEX. (16MM) |
| 28 |
90455-881-000 |
SPRING, LEVER |
| 29 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 30 |
90511-921-000 |
WASHER, PLAIN (10MM) |
| 31 |
90512-921-010 |
WASHER (6MM) |
| 32 |
90518-921-000 |
WASHER, PLAIN (8MM) |
| 33 |
90754-921-010 |
PIN (5X17) |
| 34 |
90756-921-000 |
PIN, SPLIT (1.6MM) |
| 35 |
91403-881-000 |
CLIP B, CORD |
| 37 |
92101-06012-0B |
BOLT, HEX. (6X12) |
| 38 |
92101-06016-0B |
BOLT, HEX. (6X16) |
| 39 |
92101-06020-4J |
BOLT, HEX. (6X20) |
| 40 |
92101-06025-4J |
BOLT, HEX. (6X25) |
| 45 |
93500-05022-0B |
SCREW, PAN (5X22) |
| 47 |
94101-05200 |
WASHER, PLAIN (5MM) |
| 49 |
98200-10500 |
FUSE A (5A) |
▶STARTER CASE/CAM PULLEY /PULSER COIL (13 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11301-881-020ZA |
CASE, STARTER *NH8* (DARK GRAY) |
| 5 |
14312-881-000 |
FLANGE, TIMING PULLEY |
| 7 |
14400-921-024 |
BELT, TIMING |
| 13 |
87581-921-600 |
MARK, POINT |
| 14 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 17 |
90202-881-000 |
NUT, LOCK (24MM) |
| 20 |
90604-ZV0-000 |
CLIP, TUBE (B12) |
| 23 |
90705-882-600 |
PIN, DOWEL (7X4.5) |
| 27 |
91311-881-003 |
O-RING (62X2.5) |
| 28 |
92101-06022-0B |
BOLT, HEX. (6X22) |
| 29 |
93500-05014-0B |
SCREW, PAN (5X14) |
| 30 |
94101-05200 |
WASHER, PLAIN (5MM) |
| 31 |
94111-05800 |
WASHER, SPRING (5MM) |
▶STERN BRACKET/ADJUST ROD (14 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
50122-935-010 |
PLATE, PUSH |
| 9 |
50341-921-300 |
ROD, ADJUSTING (NOT AVAILABLE) |
| 11 |
50343-921-300 |
SPRING, ADJUSTING ROD |
| 12 |
58131-881-000 |
PIN, SHEAR |
| 14 |
90106-921-010 |
BOLT, TILTING |
| 16 |
90407-920-000 |
WASHER, SPRING (6MM) |
| 17 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 18 |
90511-921-000 |
WASHER, PLAIN (10MM) |
| 19 |
90513-921-000 |
WASHER (10MM) |
| 20 |
90514-921-000 |
WASHER (8MM) |
| 21 |
90757-921-000 |
PIN, SPLIT (3MM) |
| 23 |
94001-06490-0S |
NUT, HEX. (6MM) |
| 24 |
94305-20083 |
PIN, SPRING (2X8) |
| 25 |
94305-40143 |
PIN, SPRING (4X14) |
▶SWIVEL CASE/SWIVEL SHAFT /TILT LEVER (10 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
50212-881-000 |
BLOCK, FRICTION |
| 5 |
50233-881-000 |
SPRING, FRICTION ADJUSTING |
| 12 |
50514-881-310 |
SPRING, REVERSE LOCK |
| 19 |
51427-230-300 |
WASHER (6X11) |
| 22 |
90454-881-000 |
WASHER, THRUST |
| 23 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 24 |
90511-921-000 |
WASHER, PLAIN (10MM) |
| 28 |
91402-881-000 |
PIN, LOCK (10MM) |
| 29 |
92101-06016-4J |
BOLT, HEX. (6X16) |
| 31 |
94305-40253 |
PIN, SPRING (4X25) |
▶TOOLS/STARTER ROPE (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
28470-816-000 |
ROPE, STARTER |
| 4 |
89301-921-010 |
SCREWDRIVER, CHECK BOLT |
| 5 |
98066-55716 |
SPARK PLUG (DR-5HS) (NGK) |
| 6 |
99001-09120 |
SPANNER (9X12) |
| 7 |
99001-10120 |
SPANNER (10X12) |
| 8 |
89210-GBJ-J10 |
PLIERS (135) (KOWA) |
| 9 |
99003-10000 |
DRIVER 1, PLUS SCREW (NO.2) |
| 10 |
99003-30000 |
DRIVER 3, MINUS SCREW (NO.2) |
| 11 |
99003-40000 |
LEVER |
| 12 |
99004-18190 |
WRENCH, BOX (P18X19) |
▶WATER MOUTH/BODY COVER /GEAR OIL (3 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
19262-921-810 |
MOUTH, WATER |
| 7 |
41106-935-812 |
METAL, ANODE |
| 9 |
92101-06016-0B |
BOLT, HEX. (6X16) |
▶WATER PUMP/VERTICAL SHAFT (11 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
19220-881-305 |
HOUSING, IMPELLER |
| 3 |
19231-881-840 |
COVER, IMPELLER |
| 4 |
19232-881-306 |
GASKET, IMPELLER |
| 7 |
19252-921-020 |
RING, SEAL |
| 12 |
41136-935-003 |
WASHER B, THRUST BEARING (2.05MM) |
| 13 |
90108-881-000 |
BOLT, HEX. (6X28) |
| 15 |
90112-881-000 |
COLLAR B, DISTANCE |
| 16 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 17 |
91252-935-004 |
SEAL, WATER (15MM) (NOK) |
| 18 |
92101-06012-4J |
BOLT, HEX. (6X12) |
| 19 |
96100-63020-00 |
BEARING, RADIAL BALL (6302) |
100-Hour / Annual Service Checklist
Regular maintenance is the best way to protect your investment and ensure season after season of reliable performance. Many of these tasks can be completed at home with basic tools, saving you time and money compared to dealership service visits.
- Change engine oil and replace the oil filter.
- Replace spark plugs and inspect ignition coils.
- Inspect and replace the water pump impeller.
- Drain and refill lower unit gear oil; check for water contamination.
- Replace the fuel filter element and inspect fuel lines for cracks.
- Inspect the anode (zinc) and replace if more than 50% eroded.
- Check the condition of the propeller for dings, bends, and fishing line wrap.
- Lubricate all grease points including the swivel tube, tilt tube, and shift linkage.
- Inspect the battery terminals and connections for corrosion; clean and apply dielectric grease.
- Test the emergency stop switch (lanyard) for proper function.
Pro Tips:
- When draining gear oil, catch it in a clear container. Milky or gray oil indicates water intrusion through a failed seal and should be addressed immediately before your next outing.
- Always run the engine with fresh water through the cooling system after saltwater use to flush salt deposits from internal passages and extend the life of your water pump and thermostat.