🔎 Honda BF20 Resource Center — Browse exploded parts diagrams (33 diagrams), specifications, and maintenance tips below. Scroll down to shop replacement parts for your Honda BF20.
The Honda BF20 is a 20-horsepower, 3-cylinder, 4-stroke outboard engine that delivers impressive versatility in a compact, portable package. Produced by Honda Marine across several generations, the BF20 is a go-to choice for aluminum fishing boats, rigid inflatables, small pontoons, and sailboat auxiliaries where the owner needs more thrust than a kicker but still values a manageable weight. Its electronic fuel injection (on later models) and lean-burn technology provide outstanding fuel economy and clean-running performance.
Keeping the BF20 in top condition is straightforward with the right OEM replacement parts and service information. WoMarine.com stocks a full range of aftermarket marine parts for every generation of this engine, organized with exploded parts diagrams that make component identification quick and accurate. Whether you need an impeller kit for a seasonal water pump service or a complete gasket set for a more involved DIY boat engine repair, our catalog and competitive pricing help you maintain your Honda with confidence.
Quick Reference Specifications
| Engine Type |
4-Stroke SOHC, 3-Cylinder, Fuel Injected (EFI on later models) |
| Displacement |
552 cc (33.7 cu in) |
| Bore x Stroke |
61 mm x 63 mm |
| Spark Plug (Type & Gap) |
NGK DPR6EA-9 / Gap: 0.8–0.9 mm (Refer to Owner's Manual) |
| Engine Oil Capacity |
Approx. 1.1 L |
| Recommended Engine Oil |
SAE 10W-30 (API SG or higher) |
| Gear Case Oil Capacity |
Approx. 330 mL |
| Idle Speed |
Refer to Owner's Manual |
| Full Throttle RPM Range |
5,000–6,000 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
The BF20 is a dependable workhorse, but consistent exposure to the marine environment creates predictable wear patterns. Here are the issues owners encounter most often:
-
Overheating / Impeller Failure: The water pump impeller is a rubber wear item that deteriorates with every season. Replace it annually or every 200 hours to prevent overheating and potential cylinder-head damage.
-
Hard Starting & Stalling: On carbureted models, stale fuel deposits in the carburetor jets cause starting and idle problems. A carb rebuild kit or thorough cleaning, combined with a fresh spark plug and fuel filter, usually resolves the issue. EFI models benefit from injector cleaning and a new fuel filter.
-
Gear Case Oil Leaks: Prop shaft seals and drain plug gaskets wear over time. Replace the lower-unit seal kit at the first sign of milky or discolored gear oil to prevent bearing damage.
-
Fuel System Deterioration: Ethanol-blended fuel degrades rubber hoses, primer bulbs, and diaphragms. Inspect and replace these components annually.
-
Zinc Anode Wear: Sacrificial anodes on the lower unit and trim tab must be checked regularly and replaced when 50% consumed, especially in saltwater environments.
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 BF20.
▶CAMSHAFT/VALVE (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
12209-GB4-682 |
SEAL, VALVE STEM (ARAI) |
| 3 |
14431-ZW9-000 |
ARM, VALVE ROCKER |
| 4 |
14436-ZW9-003 |
ARM, FUEL PUMP ROCKER |
| 5 |
14461-ZW9-000 |
SHAFT, ROCKER ARM |
| 6 |
14481-ZW9-000 |
SPRING, ROCKER ARM |
| 7 |
14711-ZY1-000 |
VALVE, IN. |
| 8 |
14721-ZY1-000 |
VALVE, EX. |
| 9 |
14751-ZY1-000 |
SPRING, VALVE |
| 10 |
14765-P08-000 |
RETAINER, VALVE SPRING |
| 11 |
14775-ZW9-000 |
SEAT, VALVE SPRING |
▶CARBURETOR (MANUAL) (22 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16010-ZW9-003 |
GASKET SET |
| 2 |
16011-ZV4-005 |
VALVE SET, FLOAT |
| 3 |
16013-ZW9-003 |
FLOAT SET |
| 4 |
16016-ZY1-711 |
SCREW SET |
| 5 |
16023-ZY1-003 |
CHAMBER SET, FLOAT (CARBURETOR NO.) |
| 6 |
16024-ZY3-000 |
SCREW SET, DRAIN |
| 7 |
16028-ZV4-650 |
SCREW SET |
| 8 |
16071-ZV4-005 |
SCREW, PLUG |
| 9 |
16081-ZV4-650 |
SCREW-WASHER |
| 10 |
16100-ZY1-714 |
CARBURETOR ASSY. (BJ08A B) |
| 11 |
16120-ZY1-003 |
VALVE SET, STARTER |
| 12 |
16121-ZW9-003 |
SCREW, PAN |
| 13 |
16150-ZY1-003 |
JET SET (#55) |
| 14 |
16166-ZY1-003 |
NOZZLE, MAIN |
| 15 |
16211-ZY1-000 |
INSULATOR, CARBURETOR |
| 16 |
16221-ZY1-000 |
GASKET, CARBURETOR |
| 17 |
17950-ZY1-003 |
CABLE, CHOKE |
| 18 |
95003-07008-60M |
BULK HOSE, VINYL (4X7X8000) (4X7X200) |
| 19 |
99101-ZV5-1280 |
JET, MAIN (#128) (CARBURETOR NO.) |
| 20 |
16119-ZW9-013 |
CAP |
| 21 |
16123-ZY1-013 |
PLUNGER SET, ACCELERATOR PUMP (CARBURETOR NO.) |
| 22 |
16163-GHB-600 |
CLIP, TUBE |
▶CRANKSHAFT/PISTON (8 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
13010-ZY1-003 |
RING SET, PISTON |
| 2 |
13101-ZY1-000 |
PISTON |
| 3 |
13111-ZW9-000 |
PIN, PISTON |
| 4 |
13210-ZY1-013 |
ROD, CONNECTING |
| 5 |
13311-ZY1-000 |
CRANKSHAFT |
| 6 |
90001-ZW9-000 |
BOLT, CONNECTING ROD (6X34) |
| 7 |
90741-ZW9-000 |
KEY, SPECIAL (16X13) |
| 8 |
94601-16000 |
CLIP, PISTON PIN (16MM) |
▶CYLINDER BLOCK (17 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11300-ZY1-405 |
COVER ASSY., CRANKCASE |
| 2 |
11340-ZY1-000 |
COVER, CRANKCASE SIDE |
| 3 |
11342-ZW9-000 |
GASKET, CRANKCASE SIDE COVER |
| 4 |
12000-ZY1-415ZA |
BLOCK ASSY., CYLINDER *NH8* (DARK GRAY) |
| 5 |
12166-ZW9-030 |
STOPPER, ENGINE SIDE |
| 6 |
15400-ZZ3-003 |
FILTER, OIL (DENSO) |
| 7 |
15655-ZW9-000 |
DIPSTICK, OIL |
| 9 |
35490-ZW9-003 |
SWITCH ASSY., OIL PRESSURE |
| 10 |
90004-ZW9-000 |
BOLT, FLANGE (6X28) |
| 11 |
90011-ZW9-000 |
BOLT, FLANGE (6X14) (CT200) |
| 12 |
90012-ZW9-030 |
BOLT, FLANGE (6X22) (CT200) |
| 13 |
90018-PN3-000 |
HOLDER, OIL FILTER |
| 14 |
90705-PG2-000 |
PIN, DOWEL (14X20) |
| 15 |
91203-ZY1-003 |
OIL SEAL (28X45X8) |
| 16 |
91213-PL2-003 |
OIL SEAL (35X50X8) (NOK) |
| 17 |
94301-10120 |
PIN, DOWEL (10X12) |
| 18 |
94302-08140 |
PIN B, DOWEL (8X14) |
▶CYLINDER HEAD (15 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
12166-ZW9-030 |
STOPPER, ENGINE SIDE |
| 2 |
12210-ZY1-405ZA |
CYLINDER HEAD *NH8* (DARK GRAY) |
| 3 |
12251-ZY1-003 |
GASKET, CYLINDER HEAD |
| 4 |
12310-ZW9-030 |
COVER, HEAD |
| 5 |
12312-ZW9-000 |
GASKET, HEAD COVER |
| 6 |
15611-921-000 |
CAP, OIL (YELLOW) |
| 8 |
35673-ZW5-003 |
SENSOR ASSY., WATER TEMPERATURE |
| 9 |
90003-ZY9-M01 |
BOLT, FLANGE (6X22) |
| 10 |
90007-ZW9-003 |
BOLT, FLANGE (8X83) |
| 11 |
90011-ZW9-000 |
BOLT, FLANGE (6X14) (CT200) |
| 12 |
90055-ZZ5-M01 |
BOLT, FLANGE (8X40) |
| 14 |
91301-805-000 |
O-RING (26X2.7) |
| 15 |
91307-PK2-005 |
O-RING (9.5X1.5) (HONDA KIKAKI) |
| 17 |
98059-55926 |
SPARK PLUG (U16FER9) |
| 18 |
90204-ZW9-310 |
NUT, INSERT |
▶ENGINE COVER (1) (11 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
63100-ZY1-010ZA |
COVER, ENGINE *NH282MU* (OYSTER SILVER METALLIC-U) |
| 2 |
63102-ZY1-300 |
SEAL, ENGINE COVER |
| 3 |
63232-ZW9-010 |
LEVER, FASTENER |
| 4 |
63236-ZW9-010 |
WIRE, FASTENER (3.2) |
| 7 |
63718-ZW9-000 |
RUBBER, CUSHION |
| 8 |
63719-ZW9-000 |
SEAL, COVER (LOWER) |
| 9 |
82873-ZV5-003 |
GROMMET, WATER CHECK |
| 10 |
90181-ZW9-010 |
BOLT-WASHER, SOCKET (5X10) |
| 11 |
90502-ZV4-000 |
WASHER, PLAIN (5MM) |
| 12 |
90754-ZW9-000 |
PIN (5X47) |
| 13 |
91452-ZW9-000 |
RING, STOPPER |
▶EXHAUST CHAMBER COVER (3 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
18231-ZY1-000 |
COVER, EX. CHAMBER |
| 2 |
18233-ZW9-003 |
GASKET, EX. CHAMBER |
| 3 |
90009-ZW9-000 |
BOLT, FLANGE (6X23) |
▶FLYWHEEL (7 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
28451-ZW9-003 |
PULLEY, STARTER |
| 2 |
30595-ZY1-003 |
COIL ASSY., POWER |
| 3 |
31110-ZY1-000ZA |
FLYWHEEL *TBLACK* (BLACK) |
| 5 |
31630-ZY1-901 |
COIL ASSY., CHARGE (6A) |
| 7 |
90006-ZW9-030 |
BOLT, FLANGE (6X52) (CT200) |
| 8 |
90202-ZY1-000 |
NUT, SPECIAL (16MM) |
| 9 |
95701-06010-08 |
BOLT, FLANGE (6X10) |
▶FUEL PUMP (1) (12 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16700-ZW9-003 |
PUMP ASSY., FUEL (MSDS) |
| 2 |
06167-ZY1-315 |
CHAMBER KIT, FUEL |
| 4 |
16793-ZY1-020 |
SUSPENSION, FUEL CHAMBER |
| 5 |
16861-ZY1-010 |
TUBE B, FUEL |
| 7 |
16915-ZV4-000 |
SUSPENSION, STRAINER |
| 8 |
17439-PY3-A01 |
CLAMP, TUBE (7.5-11.5) (BLACK) |
| 9 |
17701-ZY1-020 |
TUBE D, FUEL |
| 10 |
17702-ZY1-010 |
TUBE C, FUEL |
| 11 |
90003-ZY9-M01 |
BOLT, FLANGE (6X22) |
| 12 |
90603-ZV4-000 |
CLIP, TUBE (B10) |
| 13 |
90604-ZV0-000 |
CLIP, TUBE (B12) |
| 14 |
91303-ZW9-000 |
O-RING (31.2X2.4) |
▶FUEL PUMP (2) (13 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16700-ZW9-003 |
PUMP ASSY., FUEL (MSDS) |
| 2 |
06167-ZY1-315 |
CHAMBER KIT, FUEL |
| 3 |
16793-ZY1-020 |
SUSPENSION, FUEL CHAMBER |
| 4 |
16793-ZY1-020 |
SUSPENSION, FUEL CHAMBER |
| 5 |
16861-ZY1-010 |
TUBE B, FUEL |
| 7 |
16915-ZV4-000 |
SUSPENSION, STRAINER |
| 8 |
17439-PY3-A01 |
CLAMP, TUBE (7.5-11.5) (BLACK) |
| 9 |
17701-ZY1-020 |
TUBE D, FUEL |
| 11 |
90003-ZY9-M01 |
BOLT, FLANGE (6X22) |
| 13 |
90603-ZV4-000 |
CLIP, TUBE (B10) |
| 14 |
90604-ZV0-000 |
CLIP, TUBE (B12) |
| 15 |
90679-SG9-E01 |
BAND, SUCTION HOSE (BLACK) |
| 16 |
91303-ZW9-000 |
O-RING (31.2X2.4) |
▶FUEL TANK (15 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16900-ZV4-A22 |
JOINT ASSY., FUEL |
| 2 |
16977-ZV5-A00 |
FITTING, QUICK DISCONNECT |
| 3 |
16979-ZV5-901 |
O-RING |
| 4 |
17500-ZZ5-003 |
TANK ASSY., FUEL |
| 5 |
17583-ZV5-901 |
FILTER, FUEL |
| 8 |
17624-ZV5-902 |
GASKET, FUEL CAP |
| 9 |
17650-ZW9-023 |
CONNECTOR ASSY., FUEL (A) |
| 10 |
17660-ZW9-003 |
CONNECTOR, FUEL |
| 11 |
17661-921-010 |
BULB, PRIMER |
| 12 |
17665-ZV5-000 |
VALVE, IN. |
| 13 |
17680-ZV4-000 |
VALVE, OUTLET |
| 14 |
17700-ZW9-030 |
TUBE ASSY., FUEL |
| 15 |
17701-ZV5-000 |
TUBE, FUEL LONG (7.3X2000) |
| 17 |
17703-921-010 |
BAND, TUBE CLIP (20MM) |
| 18 |
17704-ZV4-010 |
BAND, TUBE CLIP (12.5MM) |
▶GEAR CASE ASSY (1 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
41005-ZY1-615ZA |
CASE ASSY., GEAR *NH282MU* (L) (OYSTER SILVER METALLIC-U) |
▶GEAR CASE/EXTENSION CASE (19 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
40201-ZW9-C10ZA |
CASE, EXTENSION *NH282MU* (L) (OYSTER SILVER METALLIC-U) |
| 5 |
41101-ZY1-C00ZA |
CASE, GEAR *NH282MU* (OYSTER SILVER METALLIC-U) |
| 6 |
41104-ZV5-000 |
SCREEN, R. WATER |
| 7 |
41105-ZV5-000 |
SCREEN, L. WATER |
| 8 |
41106-ZW9-000 |
METAL, ANODE |
| 9 |
50111-ZW9-000ZA |
HOUSING, MOUNTING (LOWER) *NH282MU* (OYSTER SILVER METALLIC-U) |
| 10 |
63702-ZW9-000 |
RUBBER, COVER (LOWER) |
| 11 |
90008-ZW9-000 |
BOLT, FLANGE (8X35) |
| 12 |
90009-ZW9-000 |
BOLT, FLANGE (6X23) |
| 13 |
90101-ZW9-003 |
BOLT, OIL CHECK |
| 14 |
90105-ZW9-000 |
BOLT, FLANGE (6X20) |
| 15 |
90107-ZW9-000 |
BOLT, FLANGE (6X75) |
| 16 |
90113-ZV5-000 |
BOLT, HEX. (6X25) |
| 19 |
90205-PP9-020 |
NUT, SELF-LOCK (6MM) |
| 20 |
90302-ZV4-000 |
NUT, SELF-LOCK (5MM) |
| 23 |
90756-ZV5-000 |
PIN, DOWEL (6X10) |
| 24 |
91052-ZY1-003 |
BEARING, NEEDLE (15X22X20) |
| 25 |
91301-216-000 |
O-RING (5.5X1.5) |
| 26 |
93700-05028-4J |
SCREW, OVAL (5X28) |
▶HANDLEBAR (24 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
17838-ZW9-000 |
LINKAGE, PIVOT |
| 2 |
17910-ZY1-013 |
CABLE, THROTTLE |
| 3 |
17917-ZW9-000 |
PIVOT, THROTTLE CABLE |
| 4 |
24625-ZV5-010 |
PLATE, SHIFT |
| 8 |
35180-ZY1-023 |
SWITCH ASSY., EMERGENCY STOP |
| 11 |
36105-ZW9-003 |
TUBE, SPIRAL B |
| 12 |
36182-ZV4-651 |
WIRE, EMERGENCY |
| 13 |
40105-ZV4-000 |
GROMMET, OIL CASE (A) |
| 14 |
53103-ZW9-000 |
PIN, THROTTLE CABLE |
| 15 |
53110-ZW9-010ZA |
HANDLEBAR *NH246* (LOOSY GRAY) |
| 16 |
53131-ZW9-C00ZA |
BRACKET, HANDLEBAR *NH246* (LOOSY GRAY) |
| 17 |
53130-ZW9-000 |
GRIP ASSY., THROTTLE FRICTION |
| 18 |
53133-ZW9-000 |
PAD, THROTTLE FRICTION |
| 19 |
53130-ZW9-000 |
GRIP ASSY., THROTTLE FRICTION |
| 20 |
53141-ZW9-000 |
PIPE, GRIP |
| 21 |
53165-ZW9-000 |
RUBBER, GRIP |
| 22 |
53171-ZW9-000 |
SCREW, HANDLE PIVOT |
| 24 |
90102-ZW9-000 |
BOLT, FLANGE (6X12) |
| 25 |
90165-ZW9-000 |
BOLT-WASHER (10X55) |
| 26 |
90302-921-000 |
NUT, HEX. (16MM) |
| 27 |
90305-ZV4-000 |
NUT, SELF-LOCK (8MM) |
| 28 |
90514-921-000 |
WASHER (8MM) |
| 30 |
93903-243J0 |
SCREW, TAPPING (4X12) |
| 32 |
53130-ZW9-000 |
GRIP ASSY., THROTTLE FRICTION |
▶IGNITION COIL/C.D.I. UNIT (12 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
30310-ZY1-003 |
COIL ASSY., PULSER |
| 2 |
30400-ZY1-003 |
MODULE, IGNITION CONTROL (CDI) |
| 3 |
30418-ZY1-010 |
PLATE, C.D.I. |
| 5 |
30506-ML4-003 |
SUSPENSION, IGNITION COIL |
| 7 |
32108-ZY1-010 |
BRACKET, C.D.I. |
| 8 |
32109-ZY1-000 |
BRACKET, CONNECTOR |
| 9 |
90011-ZW9-000 |
BOLT, FLANGE (6X14) (CT200) |
| 10 |
90016-ZW9-000 |
BOLT, FLANGE (6X25) |
| 11 |
90018-ZW9-000 |
SCREW-WASHER (5X16) |
| 12 |
90684-SB3-003 |
CLIP, FUEL TUBE |
| 13 |
91501-SM4-003 |
CLIP, ANCHOR |
| 14 |
91540-S30-003 |
CLIP, HARNESS BAND (151.5MM) (NATURAL) |
▶LABELS (13 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
87121-ZV9-800 |
MARK, RR. (20) |
| 4 |
87125-ZV4-A20 |
MARK, SPARE CLIP (ENGLISH) |
| 6 |
87131-ZW9-S00 |
MARK, SIDE |
| 7 |
87132-ZV4-G00 |
MARK, SIDE STRIPE (HONDA) |
| 8 |
87133-ZW9-S00 |
MARK, POWER THRUST |
| 13 |
87227-ZV7-000 |
MARK, OIL PRESSURE |
| 14 |
87511-ZW9-000 |
MARK, CHANGE |
| 15 |
87531-ZW9-640 |
LABEL, OIL CAUTION (ENGLISH) |
| 16 |
87532-ZW9-640 |
MARK, THROTTLE (ENGLISH) |
| 17 |
87535-ZV5-620 |
LABEL, STORING CAUTION (ENGLISH) |
| 18 |
87538-ZW1-740 |
LABEL, WARNING OPERATOR (ENGLISH) |
| 19 |
87541-ZV5-621 |
LABEL, ASSIST TILT CAUTION (ENGLISH) |
| 20 |
87546-ZW9-640 |
MARK, EMERGENCY STARTER (ENGLISH) |
▶MUFFLER COVER (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
17203-ZY1-000 |
TRAP, FLAME |
| 2 |
17380-ZY1-010 |
PLATE, MUFFLER |
| 3 |
17384-ZY1-000 |
GASKET, MUFFLER PLATE |
| 4 |
17390-ZY1-000 |
COVER, MUFFLER |
| 5 |
17394-ZY1-000 |
GASKET, MUFFLER COVER |
| 6 |
17532-ZM3-010 |
RUBBER A, TANK MOUNTING |
| 7 |
90003-ZY9-M01 |
BOLT, FLANGE (6X22) |
| 8 |
90010-ZY1-030 |
BOLT, FLANGE (6X106) |
| 9 |
91401-ZW9-000 |
TUBE, BREATHER |
| 10 |
95003-07008-60M |
BULK HOSE, VINYL (4X7X8000) (4X7X120) |
▶OIL CASE/OIL PAN GASKET (4 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11381-ZW9-003 |
GASKET, OIL PAN |
| 2 |
19252-ZW9-000 |
GROMMET, WATER TUBE |
| 3 |
90008-ZW9-000 |
BOLT, FLANGE (8X35) |
| 4 |
94301-06100 |
PIN, DOWEL (6X10) |
▶OIL CASE/SHIFT SHAFT (HANDLE SPECIFICATION) (26 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11321-ZY1-425ZA |
CASE, OIL *NH282MU* (OYSTER SILVER METALLIC-U) |
| 3 |
17710-ZW9-033 |
CONNECTOR ASSY., FUEL (B) |
| 4 |
17936-921-000 |
WASHER, PIVOT |
| 5 |
24218-ZW9-000 |
SPRING, CLICK |
| 6 |
24221-ZW9-010 |
SPRING, CLICK ASSIST |
| 7 |
24611-ZW9-010 |
SHAFT, SHIFT |
| 8 |
24613-ZW9-000 |
ROD, LINK |
| 9 |
24614-ZW9-020 |
LEVER, SHIFT |
| 10 |
24626-ZW9-010 |
PLATE, SHIFT SHAFT |
| 14 |
37210-ZY1-003 |
LAMP ASSY., INDICATOR |
| 15 |
40105-ZW9-020 |
GROMMET A, OIL CASE |
| 16 |
40106-ZW9-630 |
GROMMET B, OIL CASE |
| 19 |
40108-ZW9-000 |
GROMMET D, OIL CASE |
| 20 |
40109-ZW9-000 |
GROMMET E, OIL CASE |
| 22 |
90101-ZW9-003 |
BOLT, OIL CHECK |
| 23 |
90105-ZV1-000 |
BOLT, REVERSE LOCK |
| 24 |
90112-ZY1-000 |
BOLT, SPECIAL (6X22) (CT200) |
| 27 |
90452-GK4-600 |
WASHER, PLAIN (5MM) |
| 28 |
90506-ZW9-000 |
WASHER, WAVE (10MM) |
| 29 |
90511-ZW9-000 |
WASHER, PLAIN (9MM) |
| 30 |
90603-ZV4-000 |
CLIP, TUBE (B10) |
| 31 |
90604-ZV0-000 |
CLIP, TUBE (B12) |
| 32 |
90759-ZV1-000 |
PIN, SPLIT (2.0) |
| 33 |
91202-ZY1-013 |
SEAL, WATER (15X28X6) |
| 34 |
91301-216-000 |
O-RING (5.5X1.5) |
| 35 |
91402-ZW9-010 |
TUBE, WATER CHECK |
▶OIL PUMP (18 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
15100-ZW9-030 |
PUMP ASSY., OIL |
| 2 |
15121-ZW9-000 |
COVER, OIL PUMP |
| 3 |
15131-414-000 |
ROTOR (INNER) |
| 4 |
15133-414-000 |
ROTOR (OUTER) |
| 5 |
15136-ZW9-000 |
SHAFT, OIL PUMP |
| 6 |
15211-ZW9-010 |
FLANGE, OIL STRAINER |
| 7 |
15212-ZW9-000 |
O-RING, OIL STRAINER FLANGE |
| 8 |
15220-ZW9-003 |
STRAINER, OIL |
| 9 |
15422-ZW9-000 |
TUBE, OIL |
| 10 |
15473-881-000 |
VALVE, CHECK |
| 11 |
15474-ZW9-000 |
SPRING, CHECK VALVE |
| 12 |
90019-ZZ5-M01 |
BOLT, FLANGE (6X35) |
| 14 |
90456-333-000 |
WASHER, THRUST (11MM) |
| 15 |
91301-ZW9-000 |
O-RING, OIL PUMP |
| 16 |
91302-ZW9-000 |
O-RING, PUMP COVER |
| 17 |
91406-ZW9-003 |
CLAMP, TUBE (D17) |
| 18 |
96220-40158 |
ROLLER (4X15.8) |
| 19 |
96300-06022-09 |
BOLT, FLANGE (6X22) |
▶OUTBOARD INSTALLATION KIT (5 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
06413-ZV7-000 |
INSTALLATION KIT, OUTBOARD |
| 2 |
90129-ZV7-000 |
BOLT, HEX. (10X100) |
| 3 |
90306-ZV5-003 |
NUT, SELF-LOCK (10MM) |
| 4 |
90552-ZV7-000 |
WASHER, PLAIN (10MM) |
| 5 |
90563-ZV5-000 |
WASHER, PLAIN (10MM) |
▶PROPELLER SHAFT/PROPELLER (23 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
24101-ZW9-000 |
SHIFTER, CLUTCH |
| 2 |
24102-ZW9-000 |
PIN, SHIFTER (4X30) |
| 3 |
24103-ZV7-000 |
RING, CROSS PIN |
| 4 |
24122-ZW9-000 |
SLIDER, SHIFT |
| 5 |
24123-ZV1-300 |
SPRING, SHIFT |
| 6 |
41140-ZY1-000 |
GEAR, FR. BEVEL |
| 7 |
41149-ZW9-000 |
SHIM D (40MM) |
| 8 |
41151-ZY1-000 |
GEAR, RR. BEVEL |
| 9 |
04201-ZW9-000 |
SHAFT KIT, PROPELLER (INCLUDES PROPELLER THRUST WASHER) |
| 10 |
41200-ZW9-020ZA |
HOLDER ASSY., PROPELLER SHAFT *NH282MU* (OYSTER SILVER METALLIC-U) |
| 11 |
58130-ZY0-B92ZA |
PROPELLER, FOUR BLADES (10X7-5/8) *NH283* (STIN GRAY) |
| 12 |
90105-ZW9-000 |
BOLT, FLANGE (6X20) |
| 13 |
90301-ZV4-000 |
NUT, CASTLE (10MM) |
| 14 |
90501-ZW9-000 |
WASHER, PROPELLER THRUST |
| 15 |
90503-ZW9-000 |
WASHER (18MM) |
| 16 |
90513-921-000 |
WASHER (10MM) |
| 17 |
90758-ZV4-000 |
PIN, SPLIT (3MM) |
| 18 |
91054-ZV5-003 |
BEARING (25X47X15) |
| 19 |
91072-KT7-003 |
BEARING, NEEDLE (17X24X20) (NTN) |
| 20 |
91251-935-004 |
SEAL, WATER (17MM) (NOK) |
| 21 |
91352-ZW9-003 |
O-RING (59.4X3.1) |
| 22 |
96100-60050-00 |
BEARING, RADIAL BALL (6005) |
| 23 |
04201-ZW9-000 |
SHAFT KIT, PROPELLER (INCLUDES PROPELLER THRUST WASHER) |
▶RECOIL STARTER (28 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
28400-ZY1-033 |
STARTER ASSY., RECOIL |
| 3 |
28414-ZY1-000 |
CASE B, STARTER |
| 4 |
28418-ZW9-003 |
GUIDE, RECOIL STARTER |
| 5 |
28421-ZW9-003 |
REEL, RECOIL STARTER |
| 6 |
04284-ZY1-000 |
RATCHET SET, STARTER |
| 7 |
04284-ZY1-000 |
RATCHET SET, STARTER |
| 8 |
28431-ZW9-003 |
PLATE, FRICTION |
| 9 |
28432-ZV4-003 |
WASHER |
| 10 |
28433-ZV7-003 |
WASHER, THRUST |
| 11 |
28435-ZV4-003 |
STOPPER, REEL |
| 12 |
28436-ZV4-003 |
ARM, STOPPER |
| 13 |
28437-ZV4-003 |
SPRING, STOPPER |
| 14 |
28438-ZV4-003 |
PIN, SPLIT |
| 15 |
28441-ZW9-003 |
SPRING, FRICTION |
| 16 |
28442-ZW9-003 |
SPRING, RECOIL STARTER |
| 17 |
28443-ZW9-003 |
SPRING, RETURN |
| 18 |
28455-ZY1-000 |
SEAL, RECOIL |
| 19 |
28461-ZV4-013 |
GRIP, STARTER |
| 21 |
28466-ZW9-003 |
CAP, STARTER KNOB |
| 22 |
28471-ZV7-003 |
ROLLER, STARTER |
| 23 |
28476-ZV7-003 |
GUIDE, ROLLER |
| 24 |
80103-GJ5-000 |
GROMMET, ENGINE COVER |
| 25 |
90003-ZY9-M01 |
BOLT, FLANGE (6X22) |
| 26 |
90021-ZV4-003 |
BOLT, HEX. (6X25) |
| 27 |
90022-ZV4-003 |
BOLT, HEX. (6X14) |
| 28 |
91403-ZW9-000 |
TUBE, WATER DRAIN |
| 29 |
95005-80001-30M |
BULK HOSE, VACUUM (8X1000) (8X240) |
| 30 |
04284-ZY1-000 |
RATCHET SET, STARTER |
▶SHOCK ABSORBER (1 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
90205-PP9-020 |
NUT, SELF-LOCK (6MM) |
▶STERN BRACKET (2) (23 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
50122-935-010 |
PLATE, PUSH |
| 3 |
50300-ZY1-872ZA |
BRACKET, R. STERN *NH282MU* (OYSTER SILVER METALLIC-U) |
| 4 |
50310-ZY1-873ZA |
BRACKET, L. STERN *NH282MU* (OYSTER SILVER METALLIC-U) |
| 5 |
50323-ZW9-300 |
GRIP, CLAMP |
| 6 |
50325-ZW9-830 |
SCREW, CLAMP |
| 7 |
50331-ZV5-000 |
CAP, TILTING BOLT |
| 9 |
50340-ZY1-871 |
ROD, ADJUSTING |
| 10 |
50342-ZV5-300 |
STOPPER, ROD |
| 11 |
50343-921-300 |
SPRING, ADJUSTING ROD |
| 12 |
50381-ZZ5-000 |
SHAFT, TILTING |
| 14 |
56513-ZV5-000 |
BUSH, CYLINDER (LOWER) |
| 15 |
56539-ZY1-870 |
COLLAR, CYLINDER (LOWER) |
| 16 |
68111-ZW9-831 |
HANDLE, CARRYING REMOTE |
| 17 |
90108-ZY1-870 |
BOLT, HEX. (8X203) |
| 18 |
90119-ZV5-000 |
SCREW, PAN (6X8) |
| 19 |
90304-ZV5-013 |
NUT, SELF-LOCK (7/8-14UNF) |
| 20 |
90305-ZV4-000 |
NUT, SELF-LOCK (8MM) |
| 21 |
90507-ZV4-000 |
WASHER, PLAIN (8MM) |
| 22 |
90517-ZV5-000 |
WASHER, WAVE (22MM) |
| 23 |
90855-ZW9-300 |
RIVET (4X22.6) |
| 26 |
94305-25083 |
PIN, SPRING (2.5X8) |
| 27 |
41106-ZW9-000 |
METAL, ANODE |
| 28 |
90102-ZW9-000 |
BOLT, FLANGE (6X12) |
▶SWIVEL CASE (2) (30 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
24210-ZV1-010 |
SPRING, CLICK |
| 3 |
50100-ZW9-631 |
FRAME, MOUNTING (L) |
| 4 |
50150-ZY1-000 |
RUBBER, MOUNTING (UPPER) |
| 5 |
50152-ZW9-000 |
RUBBER, MOUNTING (LOWER) |
| 6 |
50153-ZW9-000 |
COVER, MOUNTING RUBBER (UPPER) |
| 8 |
50201-ZY1-870ZA |
CASE, SWIVEL *NH282MU* (L)(PT) (OYSTER SILVER METALLIC-U) |
| 9 |
50211-ZW9-000 |
LINER, SWIVEL CASE |
| 10 |
50212-ZW9-003 |
BLOCK, FRICTION |
| 11 |
50214-ZV5-003 |
BUSH, SWIVEL CASE |
| 12 |
50215-ZW9-000 |
COLLAR, SWIVEL CASE |
| 13 |
50218-ZW9-010 |
PLATE, FRICTION |
| 14 |
50219-ZW9-010 |
LEVER, FRICTION |
| 15 |
50522-ZV5-000 |
BUSH, TILT ARM |
| 16 |
50527-ZY1-870 |
BRACKET, TILTING |
| 17 |
50529-ZY1-870 |
STOPPER, TILT |
| 19 |
56513-ZV5-000 |
BUSH, CYLINDER (LOWER) |
| 20 |
56532-ZY1-870 |
PIN, CYLINDER (UPPER) |
| 21 |
90102-ZW9-000 |
BOLT, FLANGE (6X12) |
| 23 |
90154-ZW9-000 |
BOLT, FLANGE (10X25) |
| 24 |
90159-ZW9-000 |
BOLT, FLANGE (8X45) |
| 26 |
90162-ZW9-000 |
BOLT, STUD (8X26) |
| 28 |
90305-ZW9-000 |
NUT, SELF-LOCK (8MM) |
| 30 |
90454-881-000 |
WASHER, THRUST |
| 32 |
90514-921-000 |
WASHER (8MM) |
| 33 |
90517-ZW9-000 |
WASHER, NYLON (8MM) |
| 34 |
90951-ZV7-010 |
NIPPLE, GREASE |
| 35 |
91361-VD6-003 |
O-RING (34X2.4) |
| 37 |
94305-25203 |
PIN, SPRING (2.5X20) |
| 38 |
94540-15029 |
E-RING (15MM) |
| 39 |
90103-ZW9-010 |
BOLT, FLANGE (6X12) |
▶THERMOSTAT (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
12155-ZV4-A01 |
METAL, ANODE |
| 2 |
19279-ZW9-010 |
SPRING, FLUSH VALVE |
| 3 |
19291-ZW9-000 |
VALVE, FLASH |
| 4 |
19297-ZW9-010 |
GASKET, FLASH VALVE |
| 6 |
19315-ZW9-000 |
COVER, THERMOSTAT |
| 8 |
19361-ZW9-405 |
COVER, WATER JACKET |
| 9 |
19371-ZW9-000 |
GASKET, EX. WATER JACKET COVER |
| 10 |
90002-ZW9-030 |
BOLT, FLANGE (6X36) (CT200) |
| 11 |
90012-ZW9-030 |
BOLT, FLANGE (6X22) (CT200) |
| 13 |
19303-ZW9-003 |
RUBBER, RING |
▶TIMING BELT (5 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
14315-ZY1-000 |
PULLEY, TIMING |
| 2 |
14316-ZY1-000 |
FLANGE, TIMING PULLEY |
| 3 |
14321-ZW9-003 |
PULLEY, CAMSHAFT |
| 4 |
14400-ZY1-013 |
BELT, TIMING (71RU13 B-333) |
| 5 |
90201-ZY1-000 |
NUT, LOCK (30MM) |
▶TOOLS (11 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
28462-ZW9-003 |
ROPE, RECOIL STARTER (1300MM) |
| 3 |
36187-ZV4-652 |
CLIP, EMERGENCY LOCK |
| 5 |
89216-130-690 |
WRENCH, SPARK PLUG |
| 6 |
89217-355-000 |
WRENCH, BOX (10MM) |
| 7 |
89301-921-010 |
SCREWDRIVER, CHECK BOLT |
| 8 |
99001-10120 |
SPANNER (10X12) |
| 9 |
89210-GBJ-J10 |
PLIERS (135) (KOWA) |
| 10 |
99003-10000 |
DRIVER 1, PLUS SCREW (NO.2) |
| 11 |
99003-30000 |
DRIVER 3, MINUS SCREW (NO.2) |
| 12 |
99003-50000 |
GRIP, SCREW DRIVER |
| 13 |
99008-01600 |
BAG, TOOL (160MM) |
▶WATER HOSE JOINT KIT (5 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
06190-ZV1-860 |
JOINT KIT, WATER HOSE |
| 2 |
19270-881-812 |
NUT, WATER MOUTH |
| 3 |
19271-ZV1-810 |
JOINT, WATER HOSE |
| 4 |
19271-ZV1-810 |
JOINT, WATER HOSE |
| 5 |
19272-881-810 |
SEAT, WATER MOUTH |
▶WATER PUMP IMPELLER KIT (9 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
06192-ZW9-A30 |
PUMP KIT, IMPELLER |
| 3 |
19210-ZW9-A32 |
IMPELLER, PUMP (UL) |
| 4 |
19215-ZW9-020 |
HOUSING ASSY., IMPELLER |
| 5 |
19231-ZW9-000 |
COVER, IMPELLER |
| 6 |
19232-ZW9-000 |
GASKET, IMPELLER |
| 7 |
19253-ZW9-000 |
RING, WATER TUBE SEAL |
| 8 |
90121-ZW9-000 |
BOLT-WASHER (6X50) |
| 9 |
90752-ZW9-A30 |
KEY, WOODRUFF |
| 10 |
91301-ZG3-000 |
O-RING (42.2X2.4) |
▶WATER PUMP/VERTICAL SHAFT (1) (32 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
12216-ZE2-300 |
CLIP, VALVE GUIDE |
| 2 |
15332-ZY1-000 |
GUIDE, OIL (S,L) |
| 3 |
19210-ZW9-A32 |
IMPELLER, PUMP (UL) |
| 4 |
19215-ZW9-020 |
HOUSING ASSY., IMPELLER |
| 5 |
19231-ZW9-000 |
COVER, IMPELLER |
| 6 |
19232-ZW9-000 |
GASKET, IMPELLER |
| 7 |
19240-ZY1-C00 |
HOUSING, WATER PUMP (S,L) |
| 8 |
19243-ZW9-000 |
GROMMET, WATER PUMP HOUSING |
| 9 |
19251-ZW9-630 |
TUBE, WATER (L) |
| 10 |
19253-ZW9-000 |
RING, WATER TUBE SEAL |
| 11 |
24311-ZY1-C10 |
ROD B, SHIFT (L) |
| 12 |
24312-ZV7-000 |
JOINT, SHIFT ROD |
| 13 |
24320-ZW9-630 |
ROD A, SHIFT (L) |
| 14 |
24341-ZY1-C00 |
ROD, PUSH |
| 15 |
41112-ZY1-C10 |
SHAFT, VERTICAL (L) |
| 16 |
41116-ZW9-A30 |
SLINGER, OIL (UL) |
| 17 |
41131-ZY1-000 |
GEAR, PINION |
| 18 |
41135-ZY1-000 |
WASHER A, THRUST BEARING |
| 19 |
41137-ZY1-010 |
WASHER C, THRUST BEARING |
| 20 |
90102-ZW9-000 |
BOLT, FLANGE (6X12) |
| 21 |
90105-ZW9-000 |
BOLT, FLANGE (6X20) |
| 22 |
90121-ZW9-000 |
BOLT-WASHER (6X50) |
| 23 |
90515-ZW9-000 |
PLATE, WATER TUBE SETTING |
| 24 |
90752-ZW9-A30 |
KEY, WOODRUFF |
| 25 |
91052-ZV4-003 |
BEARING, NEEDLE (15X21X12) |
| 26 |
91251-ZW9-003 |
SEAL, WATER (15X24X5) |
| 27 |
91253-ZW9-003 |
SEAL, WATER (6MM) |
| 28 |
91301-ZG3-000 |
O-RING (42.2X2.4) |
| 29 |
91351-ZW9-000 |
O-RING, WATER PUMP HOUSING |
| 30 |
94001-06490-0S |
NUT, HEX. (6MM) |
| 31 |
94540-08018 |
E-RING (8MM) |
| 32 |
96220-25118 |
ROLLER (2.5X11.8) |
▶WIRE HARNESS/REGULATOR /STARTER CABLE (1) (19 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
17940-ZW9-010 |
CABLE, NEUTRAL STARTING |
| 2 |
31575-ZW9-000 |
WIRE ASSY., BATTERY CHARGE |
| 3 |
31650-ZY1-000 |
RECEPTACLE ASSY., CHARGE |
| 5 |
32100-ZY1-000 |
WIRE HARNESS ASSY. |
| 6 |
32103-ZW9-020 |
BRACKET, CLIP F |
| 7 |
32112-ZW9-010 |
BRACKET, STARTER CABLE |
| 9 |
32115-ZW9-010 |
BRACKET, FUSE CASE |
| 11 |
32118-ZW9-731 |
BRACKET, E-CLIP |
| 15 |
32901-952-770 |
TIE, CABLE (2.4X92) (NATURAL) |
| 16 |
36104-ZW9-003 |
TUBE, SPIRAL A |
| 24 |
90011-ZW9-000 |
BOLT, FLANGE (6X14) (CT200) |
| 25 |
90013-ZW9-000 |
BOLT, FLANGE (6X12) |
| 26 |
90114-ZW9-030 |
BOLT, FLANGE (6X26) (CT200) |
| 28 |
90650-ZY1-003 |
TIE, CABLE |
| 29 |
91540-S30-003 |
CLIP, HARNESS BAND (151.5MM) (NATURAL) |
| 31 |
91567-SE0-003 |
BAND, WIRE HARNESS (93.5MM) (WHITE) |
| 32 |
98200-32000 |
FUSE, BLADE (20A) |
| 35 |
32521-ZW9-000 |
CONNECTOR, DUMMY |
| 36 |
38218-ZW9-003 |
COVER ASSY., FUSE (20A) |
100-Hour / Annual Service Checklist
A well-maintained BF20 will provide years of reliable service. This checklist follows Honda's recommended 100-hour / annual maintenance schedule and covers everything you need to keep this engine running at its best.
- Change engine oil and replace the oil filter (if equipped).
- Replace all three spark plugs and verify the gap setting.
- Drain and refill lower-unit gear case oil; inspect for water or metal particles.
- Replace the water pump impeller; inspect the housing and wear plate.
- Clean or replace the fuel filter; inspect fuel lines, connectors, and the primer bulb.
- Clean the carburetor bowl and jets (carbureted models) or inspect injector screens (EFI models).
- Inspect and replace sacrificial anodes as needed.
- Check the propeller for nicks, bends, and fishing-line wrap on the shaft.
- Lubricate throttle and shift cables, prop shaft splines, and all grease fittings.
Pro Tips:
- After each saltwater outing, flush the cooling system with fresh water using flush muffs or a flush bucket for at least five minutes. Salt residue is the primary cause of premature water passage blockage in small outboards.
- Add fuel stabilizer to the tank and run the engine for several minutes before any storage period longer than 30 days. This circulates treated fuel through the carburetor or injectors and prevents varnish buildup.