🔎 Honda BF100 Resource Center — Browse exploded parts diagrams (24 diagrams), specifications, and maintenance tips below. Scroll down to shop replacement parts for your Honda BF100.
The Honda BF100 is a 100-horsepower, 4-cylinder, 4-stroke outboard engine that has earned a solid reputation among boaters who demand reliable mid-range power. Produced by Honda Marine from the early 2000s onward, the BF100 is well suited to pontoon boats, center consoles, and mid-size fishing vessels. Its fuel-injected, SOHC 4-stroke design delivers smooth, fuel-efficient performance while meeting stringent emissions standards. Whether you are replacing worn components or performing scheduled maintenance, having access to the correct OEM replacement parts is critical to keeping this engine running at peak efficiency.
At WoMarine.com, we stock a comprehensive selection of aftermarket marine parts for the Honda BF100, organized with exploded parts diagrams so you can quickly identify exactly what you need. From water pump impellers and thermostat assemblies to spark plugs and fuel filters, every part is cross-referenced to Honda OEM part numbers for guaranteed compatibility. If you are tackling a DIY boat engine repair project, our catalog and technical resources are designed to help you get back on the water faster and at a fraction of dealership cost.
Quick Reference Specifications
| Engine Type |
4-Stroke SOHC, 4-Cylinder, Fuel Injected |
| Displacement |
1,496 cc (91.3 cu in) |
| Bore x Stroke |
75 mm x 84.6 mm |
| Spark Plug (Type & Gap) |
NGK IMR9C-9HES / Gap: 0.8–0.9 mm (Refer to Owner's Manual) |
| Engine Oil Capacity |
Approx. 4.5 L (with filter) |
| Recommended Engine Oil |
SAE 10W-30 (API SJ or higher, Honda Marine recommended) |
| Gear Case Oil Capacity |
Approx. 680 mL |
| Idle Speed |
Refer to Owner's Manual |
| Full Throttle RPM Range |
5,500–6,000 RPM |
| Fuel |
Unleaded Gasoline (87 Octane or higher) |
Always verify specifications against your owner's manual for your specific serial number range, as Honda may update specs across production years.
Common Issues & Recommended Parts
Even the most dependable outboards develop wear over time. Below are the most frequently reported issues on the Honda BF100 and the parts that address them:
-
Overheating / Water Pump Failure: The rubber impeller inside the water pump housing hardens and loses its blades over time. Replace the water pump impeller kit every 200–300 hours or at least every two seasons to prevent costly overheating damage.
-
Hard Starting or Rough Idle: Fouled or worn spark plugs and a clogged fuel filter are the most common culprits. Install fresh spark plugs and a new fuel filter element to restore reliable ignition and smooth running.
-
Gear Case Oil Leaks: The propeller shaft seals and lower-unit drain gaskets deteriorate with age, allowing water intrusion into the gear case. A lower-unit seal kit will include all the O-rings and seals you need.
-
Fuel System Deterioration: Ethanol-blended fuel accelerates degradation of fuel lines, diaphragms, and O-rings. Inspect and replace the fuel pump diaphragm and in-line fuel filter annually.
-
Corrosion / Anode Wear: Sacrificial zinc anodes protect the lower unit from galvanic corrosion, especially in saltwater. Replace anodes when they are 50% consumed or more.
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 BF100.
▶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 (7 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) |
| 31 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 32 |
90759-ZV1-000 |
PIN, SPLIT (2.0) |
| 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 (12 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
24123-921-300 |
SPRING, SHIFT |
| 6 |
41150-881-000 |
GEAR, RR. BEVEL |
| 7 |
41158-921-000 |
SHIM B, GEAR (0.15MM) |
| 8 |
41160-881-000 |
SHAFT, PROPELLER |
| 11 |
58130-881-840ZB |
PROPELLER, THREE-BLADE *NH283* (STIN GRAY) |
| 12 |
58131-881-000 |
PIN, SHEAR |
| 15 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 17 |
90757-921-000 |
PIN, SPLIT (3MM) |
| 18 |
91251-935-004 |
SEAL, WATER (17MM) (NOK) |
| 19 |
91351-881-000 |
O-RING (66MM) |
| 20 |
92101-06020-4J |
BOLT, HEX. (6X20) |
| 21 |
96100-60050-00 |
BEARING, RADIAL BALL (6005) |
▶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 single best way to extend the life of your Honda BF100 and avoid expensive repairs. The following checklist covers the essentials for every 100 hours of operation or once per season, whichever comes first. With basic hand tools and the right parts, most of these tasks are well within reach of the average boat owner.
- Change engine oil and replace the oil filter.
- Replace spark plugs and inspect ignition coil boots.
- Drain and refill gear case oil; inspect for water or metal shavings.
- Replace the water pump impeller and inspect the pump housing and plate.
- Replace the fuel filter element and inspect all fuel hoses for cracking.
- Inspect and replace sacrificial zinc anodes as needed.
- Check the thermostat operation and replace if sticking.
- Inspect the propeller for dings, bends, or fishing-line wrap on the shaft.
- Lubricate all grease points (steering pivot, tilt tube, prop shaft splines).
- Inspect the battery cables and connections; clean any corrosion.
Pro Tips:
- After every saltwater outing, flush the engine with fresh water for at least five minutes using the built-in flushing port. This simple step dramatically reduces internal corrosion and extends water passage life.
- Apply marine-grade anti-seize compound to spark plug threads and the propeller shaft splines during reassembly to prevent future seizure.