🔎 Honda BF25 Reference Library — Exploded parts diagrams (33 diagrams), specifications, common issues, and maintenance checklist.
The Honda BF25 is a 4-Stroke SOHC 3-Cylinder, Water-Cooled outboard motor. Commonly used on jon boats, pontoons, and mid-size utility craft.
Quick Reference Specifications
| Specification |
Value |
| Engine Type |
4-Stroke SOHC 3-Cylinder, Water-Cooled |
| Horsepower |
25 HP |
| Displacement |
552 cc (33.7 cu in) |
| Bore x Stroke |
61 x 63 mm (2.40 x 2.48 in) |
| Spark Plug (Type & Gap) |
NGK DCPR6E |
| Engine Oil Capacity |
1.7 L (1.80 US qt) with filter |
| Recommended Engine Oil |
SAE 10W-30 4-Stroke Marine Oil (API SG or higher) |
| Gear Case Oil Capacity |
310 mL (10.5 fl oz) |
| Idle Speed (in gear) |
750 ± 50 RPM (in gear) |
| Full Throttle RPM Range |
5000-6000 RPM |
| Fuel |
Unleaded Gasoline, 86 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 Honda BF25:
-
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 Honda BF25.
▶CAMSHAFT (8 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
14481-ZV7-000 |
SPRING, ROCKER ARM A |
| 3 |
14482-ZV7-000 |
SPRING, ROCKER ARM B |
| 4 |
14621-ZV7-000 |
ARM, VALVE ROCKER |
| 5 |
14631-ZV7-000 |
SHAFT, IN. ROCKER ARM |
| 6 |
14636-ZV7-000 |
COLLAR, ROCKER |
| 7 |
14641-ZV7-000 |
SHAFT, EX. ROCKER ARM |
| 10 |
95801-06028-09 |
BOLT, FLANGE (6X28) |
| 11 |
96220-30168 |
ROLLER (3X16.8) |
▶CARBURETOR (40 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
16011-ZV4-005 |
VALVE SET, FLOAT |
| 5 |
16013-ZV4-005 |
FLOAT SET |
| 6 |
16016-ZV3-000 |
SCREW SET |
| 7 |
16023-ZV3-000 |
CHAMBER SET, FLOAT |
| 8 |
16024-ZY3-000 |
SCREW SET, DRAIN |
| 9 |
16028-ZV3-000 |
SCREW SET |
| 10 |
16029-ZV3-000 |
SCREW SET |
| 11 |
16052-KG4-003 |
SPRING, COMPRESSION COIL |
| 12 |
16071-ZV4-005 |
SCREW, PLUG |
| 13 |
16081-ZV4-650 |
SCREW-WASHER |
| 19 |
16150-ZV7-010 |
JET SET (#38) |
| 21 |
16211-ZW2-000 |
INSULATOR, CARBURETOR |
| 22 |
16221-ZW2-000 |
GASKET, CARBURETOR |
| 25 |
16574-ZV5-000 |
ARM A, CHOKE |
| 32 |
16881-ZV5-000 |
TUBE D, FUEL |
| 33 |
16960-ME9-000 |
PIPE, THREE WAY JOINT |
| 34 |
17100-ZV7-000ZA |
MANIFOLD ASSY., IN. *NH8* (DARK GRAY) |
| 35 |
17151-ZV7-000 |
GASKET, IN. MANIFOLD |
| 36 |
17202-ZV5-310 |
COLLAR, DISTANCE |
| 38 |
17384-ZV5-000 |
GASKET, MUFFLER PLATE |
| 39 |
17881-ZV5-010 |
PIPE, INSTALL |
| 40 |
17957-ZV4-000 |
BUSH, LINKAGE |
| 41 |
36135-ZV5-004 |
VALVE, DASHPOT CHECK |
| 42 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 43 |
90019-ZV1-010 |
BOLT, FLANGE (5X10) (CT200) |
| 44 |
90021-ZV5-000 |
BOLT, FLANGE (6X97) |
| 46 |
90511-ZV4-000 |
WASHER, PLAIN (6MM) |
| 47 |
90603-ZV4-000 |
CLIP, TUBE (B10) |
| 48 |
91503-ZV5-000 |
COLLAR, DISTANCE (6.5X10.5X16) |
| 50 |
93500-05010-0B |
SCREW, PAN (5X10) |
| 51 |
93500-06018-4J |
SCREW, PAN (6X18) |
| 52 |
95001-35003-60M |
BULK HOSE, FUEL (3.5X3000) (3.5X65) |
| 53 |
95001-35003-60M |
BULK HOSE, FUEL (3.5X3000) (3.5X65) |
| 54 |
95001-55003-60M |
BULK HOSE, FUEL (5.5X3000) (5.3X175) |
| 55 |
95001-55003-60M |
BULK HOSE, FUEL (5.5X3000) (5.3X175) |
| 56 |
95001-55003-60M |
BULK HOSE, FUEL (5.5X3000) (5.3X175) |
| 57 |
95003-05008-60M |
BULK HOSE, VINYL (3.5X6.5X8000) (3.5X6.5X130) (3.5X6.5X8000) (9500(95003-05 |
| 58 |
95701-06028-02 |
BOLT, FLANGE (6X28) |
| 59 |
96220-60150 |
ROLLER (6X15) |
| 60 |
99101-ZV5-1000 |
JET, MAIN (#100) |
▶CHARGE RECEPTACLE KIT (1) (10 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
06310-ZV7-020 |
RECEPTACLE KIT, CHARGE (6A) |
| 2 |
30564-ZA5-000 |
GROMMET, WIRE |
| 7 |
31652-881-024 |
PLUG, RECEPTACLE |
| 9 |
38207-ZV4-000 |
FUSE, SPARE (15A) |
| 10 |
40107-ZV7-000 |
GROMMET, CASE (LOWER) (C) |
| 11 |
87512-ZV4-A21 |
MARK, RECEPTACLE (6A) |
| 12 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 13 |
90014-ZV1-010 |
BOLT, FLANGE (5X22) |
| 15 |
90672-SA0-003 |
STRAP, CABLE (118MM) (BLACK) |
| 16 |
95701-06020-02 |
BOLT, FLANGE (6X20) |
▶CHARGE RECEPTACLE KIT (2) (9 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
30564-ZA5-000 |
GROMMET, WIRE |
| 7 |
31652-881-024 |
PLUG, RECEPTACLE |
| 9 |
38207-ZV4-000 |
FUSE, SPARE (15A) |
| 10 |
40107-ZV7-000 |
GROMMET, CASE (LOWER) (C) |
| 11 |
87512-ZV4-831 |
MARK, RECEPTACLE (10A) |
| 12 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 13 |
90014-ZV1-010 |
BOLT, FLANGE (5X22) |
| 15 |
90672-SA0-003 |
STRAP, CABLE (118MM) (BLACK) |
| 16 |
95701-06020-02 |
BOLT, FLANGE (6X20) |
▶CRANKSHAFT (8 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
13010-ZV4-004 |
RING SET, PISTON (STD) |
| 5 |
13213-KV0-000 |
BOLT, CONNECTING ROD |
| 6 |
13215-KM3-000 |
NUT, CONNECTING ROD |
| 7 |
13219-333-003 |
BEARING E, CONNECTING ROD (RED) |
| 9 |
13318-MJ0-000 |
BEARING D, MAIN (17MM) (RED) |
| 10 |
13331-ZW2-F01 |
WASHER, THRUST |
| 13 |
90741-ZV4-000 |
KEY, SPECIAL (16X15) |
| 14 |
94601-14000 |
CLIP, PISTON PIN (14MM) |
▶CYLINDER BLOCK (19 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
11911-ZV7-020 |
HANGER, ENGINE |
| 5 |
15142-PE0-000 |
O-RING (4.8X1.9) |
| 6 |
15150-ZV5-000 |
ORIFICE ASSY., OIL PASSAGE |
| 8 |
19300-ZV5-043 |
THERMOSTAT ASSY. |
| 9 |
19315-ZV5-010 |
COVER, THERMOSTAT |
| 11 |
19361-ZV7-000ZA |
COVER, WATER JACKET *NH8* (DARK GRAY) |
| 12 |
19371-ZV7-000 |
GASKET, WATER JACKET COVER |
| 13 |
24626-ZV5-010 |
PLATE, SHIFT SHAFT |
| 14 |
37240-P13-013 |
SWITCH ASSY., OIL PRESSURE (DENSO) |
| 16 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 18 |
90018-PN3-000 |
HOLDER, OIL FILTER |
| 19 |
90020-ZV5-000 |
BOLT, FLANGE (6X22) |
| 21 |
91201-ZE3-004 |
OIL SEAL (35X52X8) |
| 22 |
91262-SL4-005 |
OIL SEAL (44.5X60.5X8) (NOK) |
| 23 |
93500-06018-4J |
SCREW, PAN (6X18) |
| 24 |
94301-10120 |
PIN, DOWEL (10X12) |
| 25 |
94303-06100 |
PIN, DOWEL (6X10) |
| 26 |
95701-06040-02 |
BOLT, FLANGE (6X40) |
| 27 |
95701-08018-02 |
BOLT, FLANGE (8X18) |
▶CYLINDER HEAD (20 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
12209-KL4-005 |
SEAL, VALVE STEM (NOK) |
| 5 |
12212-ZV7-000 |
PLATE, OIL CHAMBER |
| 6 |
12228-ZV7-000 |
BOLT, FLANGE (8X83) |
| 7 |
12251-ZV7-004 |
GASKET, CYLINDER HEAD |
| 9 |
12312-ZV7-010 |
GASKET, HEAD COVER |
| 10 |
12314-ZV5-300 |
COLLAR, HEAD COVER |
| 14 |
14771-ZV1-000 |
RETAINER, VALVE SPRING |
| 15 |
14775-028-010 |
SEAT, VALVE SPRING |
| 18 |
15611-ZV4-000 |
CAP, OIL |
| 19 |
16700-ZW1-004 |
PUMP ASSY., FUEL (MSDS) |
| 20 |
16716-ZV5-000 |
LIFTER, FUEL PUMP |
| 22 |
90006-ZV5-000 |
BOLT, STUD (6X28) |
| 25 |
91301-805-000 |
O-RING (26X2.7) |
| 27 |
91307-PH7-660 |
O-RING (13.5X1.4) |
| 28 |
90601-ZV3-030 |
CLAMP, TUBE (D17) |
| 29 |
94301-10120 |
PIN, DOWEL (10X12) |
| 30 |
95701-06012-00 |
BOLT, FLANGE (6X12) |
| 31 |
95701-06035-02 |
BOLT, FLANGE (6X35) |
| 32 |
95701-08040-02 |
BOLT, FLANGE (8X40) |
| 33 |
96001-06020-02 |
BOLT, FLANGE (6X20) |
▶CYLINDER HEAD ASSEMBLY (0 parts)
▶ENGINE COVER (23 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
19271-ZV5-000 |
JOINT, WATER HOSE |
| 5 |
37210-ZV4-003 |
LAMP ASSY., INDICATOR |
| 7 |
40106-ZV5-000 |
GROMMET, CASE (LOWER) (B) |
| 8 |
40107-ZV7-750 |
GROMMET, CASE (LOWER) (C) |
| 9 |
40109-ZV4-010 |
GROMMET, OIL CASE (E) |
| 11 |
40151-ZV7-000ZA |
CASE, SEPARATE *NH282MU* (OYSTER SILVER METALLIC-U) |
| 14 |
63102-ZV7-300 |
SEAL, ENGINE COVER |
| 16 |
63240-ZV5-000 |
LEVER, FASTENER |
| 17 |
82873-ZV5-000 |
GROMMET, WATER CHECK |
| 18 |
90010-ZV5-000 |
BOLT, HEX. (8X55) |
| 19 |
90010-ZV7-000 |
BOLT, HEX. (8X80) |
| 20 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 21 |
90015-ZV0-000 |
BOLT, FLANGE (6X28) (CT200) |
| 22 |
90121-ZV4-000 |
BOLT, HEX. (6X45) |
| 23 |
90301-473-003 |
NUT, U (6MM) (FUSE RASHI) |
| 24 |
90304-881-010 |
NUT (6MM) |
| 25 |
90506-ZV4-000 |
WASHER, PLAIN (6MM) |
| 26 |
90507-ZV4-000 |
WASHER, PLAIN (8MM) |
| 27 |
90512-921-010 |
WASHER (6MM) |
| 28 |
90602-921-000 |
CLIP, TUBE (B8) |
| 30 |
91221-ZV5-005 |
SEAL, WATER (17X26X7) |
| 31 |
91309-PJ7-010 |
O-RING (11.5X3.5) |
| 33 |
95701-08070-00 |
BOLT, FLANGE (8X70) |
▶EXTENSION CASE (31 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
06412-ZV5-000 |
TAB KIT, TRIM |
| 2 |
19280-ZV5-000 |
TUBE, WATER (LOWER) |
| 3 |
19286-ZV5-000 |
PLATE, RUBBER SETTING |
| 4 |
40201-ZV7-722ZA |
CASE, EXTENSION *NH282MU* (L) (OYSTER SILVER METALLIC-U) |
| 6 |
40209-ZV5-000 |
RUBBER, DRAIN PLUG |
| 8 |
40219-ZY3-023 |
WIRE, LEAD (1.5X116MM) |
| 10 |
41104-ZV5-000 |
SCREEN, R. WATER |
| 11 |
41105-ZV5-000 |
SCREEN, L. WATER |
| 12 |
41107-ZV5-000 |
TAB, TRIM |
| 13 |
41108-ZV4-000 |
SCREEN, WATER (LOWER) |
| 14 |
50111-ZV5-000ZA |
HOUSING, R. MOUNTING (LOWER) *NH282MU* (OYSTER SILVER METALLIC-U) |
| 15 |
50155-ZV5-000 |
RUBBER, MOUNT (LOWER) |
| 16 |
50161-ZV5-010ZA |
HOUSING, CENTER MOUNTING (LOWER) *NH282MU* (OYSTER SILVER METALLIC-U) |
| 17 |
90009-ZV5-000 |
BOLT, HEX. (8X35) |
| 18 |
90105-ZVA-000 |
BOLT, OIL CHECK |
| 19 |
90106-ZV4-010 |
BOLT, STUD (5X12) |
| 20 |
90115-ZV5-000 |
BOLT, HEX. (8X25) |
| 21 |
90118-ZV5-000 |
BOLT, HEX. (12X162) |
| 22 |
90119-ZV5-000 |
SCREW, PAN (6X8) |
| 23 |
90120-ZV5-003 |
BOLT, DRAIN PLUG (8MM) |
| 24 |
90123-ZV5-010 |
BOLT, HEX. (10X40) |
| 25 |
90126-ZV5-000 |
BOLT, HEX. (8X20) |
| 26 |
90302-ZV4-000 |
NUT, SELF-LOCK (5MM) |
| 27 |
90308-ZV5-003 |
NUT, SELF-LOCK (12MM) |
| 28 |
90452-GK4-600 |
WASHER, PLAIN (5MM) |
| 30 |
90507-ZV4-000 |
WASHER, PLAIN (8MM) |
| 32 |
90552-ZV5-000 |
WASHER, PLAIN (12MM) |
| 33 |
90559-ZV5-000 |
WASHER, PLAIN (12MM) |
| 34 |
90563-ZV5-000 |
WASHER, PLAIN (10MM) |
| 36 |
90756-ZV5-000 |
PIN, DOWEL (6X10) |
| 37 |
93700-05028-4J |
SCREW, OVAL (5X28) |
▶FLYWHEEL (3 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
28451-ZV7-003 |
PULLEY, STARTER |
| 7 |
90016-920-000 |
BOLT, FLANGE (6X12) |
| 8 |
90121-ZV0-010 |
BOLT, FLANGE (6X25) |
▶FUEL TANK (16 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
04802-ZV5-A00 |
FUEL JOIN, SET |
| 2 |
16977-ZV5-A00 |
FITTING, QUICK DISCONNECT |
| 3 |
16979-ZV5-901 |
O-RING |
| 4 |
17500-ZZ5-711 |
TANK ASSY., FUEL |
| 5 |
17583-ZV5-901 |
FILTER, FUEL |
| 7 |
04104-ZW9-010 |
CONNECTOR ASSY., FUEL (A) |
| 8 |
17660-ZW9-003 |
CONNECTOR, FUEL |
| 9 |
17661-921-010 |
BULB, PRIMER |
| 10 |
17665-ZV5-000 |
VALVE, IN. |
| 11 |
17680-ZV4-000 |
VALVE, OUTLET |
| 12 |
04101-ZW9-010 |
TUBE ASSY., FUEL |
| 13 |
17701-ZV5-000 |
TUBE, FUEL LONG (7.3X2000) |
| 15 |
17703-921-010 |
BAND, TUBE CLIP (20MM) |
| 16 |
17704-ZV4-010 |
BAND, TUBE CLIP (12.5MM) |
| 18 |
17936-921-000 |
WASHER, PIVOT |
| 19 |
90013-ZV4-010 |
BOLT, FLANGE (6X20) (CT200) |
▶GASKET KIT (13 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11381-ZV7-020 |
GASKET, OIL PAN |
| 2 |
12251-ZV7-004 |
GASKET, CYLINDER HEAD |
| 3 |
12312-ZV7-010 |
GASKET, HEAD COVER |
| 4 |
15142-PE0-000 |
O-RING (4.8X1.9) |
| 5 |
16221-ZW2-000 |
GASKET, CARBURETOR |
| 6 |
17151-ZV7-000 |
GASKET, IN. MANIFOLD |
| 7 |
17384-ZV5-000 |
GASKET, MUFFLER PLATE |
| 8 |
17394-ZV5-000 |
GASKET, MUFFLER COVER |
| 9 |
18333-ZV7-000 |
GASKET, EX. PIPE |
| 11 |
19371-ZV7-000 |
GASKET, WATER JACKET COVER |
| 12 |
23162-ZV7-010 |
GASKET, ENGINE CASE (LOWER) |
| 14 |
91301-805-000 |
O-RING (26X2.7) |
| 15 |
91302-ZV7-000 |
O-RING, PUMP COVER |
▶GASKET KIT (SHORT BLOCK & HEAD ASSY.) (0 parts)
▶GEAR CASE (0 parts)
▶HANDLEBAR (33 parts)
| Ref |
OEM Part # |
Part Name |
| 7 |
24617-ZV3-010 |
PLATE, SHIFT LINK (A) |
| 9 |
24626-ZV5-010 |
PLATE, SHIFT SHAFT |
| 11 |
35180-ZV7-033 |
SWITCH ASSY., EMERGENCY STOP |
| 12 |
36182-ZV4-651 |
WIRE, EMERGENCY |
| 13 |
36187-ZV4-652 |
CLIP, EMERGENCY LOCK |
| 15 |
50281-ZV3-000ZA |
HANDLE, CARRYING *NH282MU* (OYSTER SILVER METALLIC-U) |
| 16 |
50285-ZV4-000 |
GROMMET, CARRYING HANDLE |
| 19 |
53104-ZV3-000 |
BOLT, FRICTION |
| 21 |
53109-ZV3-000 |
RUBBER, HANDLE MOUNTING |
| 22 |
53111-ZV3-010 |
PLATE, HANDLEBAR |
| 24 |
53148-ZV3-000 |
SPRING, GRIP PIPE |
| 25 |
53165-ZV4-000 |
RUBBER, GRIP |
| 26 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 27 |
90119-ZV5-000 |
SCREW, PAN (6X8) |
| 28 |
90123-ZV3-000 |
SCREW, PAN (5X12) |
| 29 |
90127-ZV4-000 |
BOLT, HEX. (6X16) |
| 30 |
90205-PP9-020 |
NUT, SELF-LOCK (6MM) |
| 31 |
90302-921-000 |
NUT, HEX. (16MM) |
| 32 |
90306-ZV5-003 |
NUT, SELF-LOCK (10MM) |
| 33 |
90452-GK4-600 |
WASHER, PLAIN (5MM) |
| 34 |
90506-ZV1-000 |
WASHER, WAVE (14MM) |
| 35 |
90515-ZV3-000 |
WASHER, HANDLEBAR (36MM) |
| 36 |
90543-ZV3-000 |
WASHER (10MM) |
| 37 |
90563-ZV5-000 |
WASHER, PLAIN (10MM) |
| 38 |
90759-ZV1-000 |
PIN, SPLIT (2.0) |
| 39 |
91451-ZV3-003 |
TUBE, SPIRAL |
| 40 |
91475-SB6-000 |
CLIP, WIRE HARNESS (6.3MM) |
| 41 |
91503-ZV5-000 |
COLLAR, DISTANCE (6.5X10.5X16) |
| 42 |
91559-ZV3-000 |
COLLAR, HANDLEBAR |
| 43 |
94002-06490-0S |
NUT, HEX. (6MM) |
| 44 |
94305-40203 |
PIN, SPRING (4X20) |
| 45 |
94305-40283 |
PIN, SPRING (4X28) |
| 46 |
95801-06028-02 |
BOLT, FLANGE (6X28) |
▶IGNITION COIL (1) (16 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
30500-ZW2-F01 |
COIL ASSY., IGNITION |
| 3 |
30511-ZV7-003 |
COIL, IGNITION (1) |
| 4 |
30512-ZV7-003 |
COIL, IGNITION (2) |
| 5 |
30513-ZW2-F01 |
COIL, IGNITION (3) |
| 6 |
30516-ZV5-003 |
SUSPENSION, IGNITION COIL |
| 9 |
30588-ZV5-013 |
COVER, IGNITION CONTROL MODULE (CDI) |
| 10 |
30598-ZV5-000 |
GROMMET, MODULE IGNITION CONTROL CASE (CDI)(B) |
| 12 |
32106-ZV5-010 |
BRACKET, CONNECTOR (A) |
| 15 |
32805-413-000 |
CLIP, TURN SIGNAL WIRE |
| 16 |
37204-ZV7-010 |
WIRE, SWITCH (385MM) |
| 17 |
40102-ZV5-000 |
GROMMET, CASE (LOWER) |
| 18 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 19 |
90121-ZV0-010 |
BOLT, FLANGE (6X25) |
| 20 |
91553-ZV5-010 |
COLLAR, MODULE IGNITION CONTROL CASE (CDI) |
| 21 |
94103-06200 |
WASHER, PLAIN (6MM) |
| 22 |
95701-06020-02 |
BOLT, FLANGE (6X20) |
▶MARKS (8 parts)
| Ref |
OEM Part # |
Part Name |
| 5 |
87131-ZV7-010 |
MARK, SIDE |
| 6 |
87132-ZV4-A02 |
MARK, SIDE STRIPE (HONDA) |
| 7 |
87152-ZV7-000 |
LABEL, SPECIFICATION |
| 8 |
87227-ZV7-000 |
MARK, OIL PRESSURE |
| 9 |
87511-ZV5-620 |
MARK, CHANGE (ENGLISH) |
| 11 |
87531-ZV7-000 |
LABEL, OIL CAUTION (ENGLISH) |
| 13 |
87535-ZV5-620 |
LABEL, STORING CAUTION (ENGLISH) |
| 14 |
87538-ZW1-740 |
LABEL, WARNING OPERATOR (ENGLISH) |
▶MUFFLER COVER (5 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
17394-ZV5-000 |
GASKET, MUFFLER COVER |
| 12 |
90545-323-700 |
WASHER (6.5X18) |
| 14 |
90601-ZV3-030 |
CLAMP, TUBE (D17) |
| 15 |
95701-06025-02 |
BOLT, FLANGE (6X25) |
| 16 |
95701-06040-02 |
BOLT, FLANGE (6X40) |
▶OIL PAN (8 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
11311-ZV7-030ZA |
PAN, OIL *TGRAY* (GRAY) |
| 2 |
11381-ZV7-020 |
GASKET, OIL PAN |
| 3 |
15650-ZV7-000 |
DIPSTICK, OIL |
| 4 |
23162-ZV7-010 |
GASKET, ENGINE CASE (LOWER) |
| 5 |
90113-ZV5-000 |
BOLT, HEX. (6X25) |
| 6 |
90131-ZV5-000 |
BOLT, DRAIN PLUG |
| 7 |
90506-ZV4-000 |
WASHER, PLAIN (6MM) |
| 8 |
90601-ZE2-000 |
WASHER, DRAIN PLUG (12MM) |
▶OIL PUMP (21 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
15111-ZV7-000 |
BODY, OIL PUMP |
| 3 |
15121-ZV7-000 |
COVER, OIL PUMP |
| 4 |
15136-ZV7-000 |
SHAFT, OIL PUMP |
| 5 |
15220-ZV7-000 |
STRAINER, OIL |
| 6 |
15231-413-020 |
VALVE, RELIEF |
| 7 |
15232-KT8-000 |
SPRING, RELIEF VALVE |
| 8 |
15236-ZV5-010 |
BOLT, SEALING (14MM) |
| 9 |
15302-PE0-300 |
WASHER, SEALING (14MM) |
| 12 |
18330-ZV7-010 |
PIPE, EX. |
| 14 |
19252-ZV5-000 |
GROMMET, WATER TUBE |
| 15 |
90017-ZV0-000 |
BOLT, FLANGE (6X18) |
| 16 |
90101-ZV1-000 |
BOLT, HEX. (6X18) |
| 17 |
90105-881-000 |
BOLT, HEX. (6X12) |
| 18 |
90115-ZV5-000 |
BOLT, HEX. (8X25) |
| 19 |
90456-333-000 |
WASHER, THRUST (11MM) |
| 20 |
90506-ZV4-000 |
WASHER, PLAIN (6MM) |
| 21 |
90507-ZV4-000 |
WASHER, PLAIN (8MM) |
| 23 |
91302-ZV7-000 |
O-RING, PUMP COVER |
| 24 |
95701-06016-00 |
BOLT, FLANGE (6X16) |
| 25 |
95701-06045-02 |
BOLT, FLANGE (6X45) |
| 26 |
96220-40158 |
ROLLER (4X15.8) |
▶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 (22 parts)
| Ref |
OEM Part # |
Part Name |
| 2 |
24102-ZV7-000 |
PIN, SHIFTER |
| 3 |
24103-ZV7-000 |
RING, CROSS PIN |
| 4 |
24106-ZV5-000 |
HOLDER, SHIFTER PIN |
| 5 |
24122-ZV7-000 |
SLIDER, SHIFT |
| 6 |
24123-ZV5-003 |
SPRING, SHIFT |
| 7 |
41145-ZV7-010 |
GEAR, FR. BEVEL |
| 9 |
41160-ZV7-000 |
SHAFT ASSY., PROPELLER (NOT AVAILABLE) |
| 11 |
58130-ZV7-850ZA |
PROPELLER, THREE-BLADE (9-3/4X9-7/8) *NH283* (STIN GRAY) |
| 12 |
90124-ZV4-000 |
BOLT, HEX. (6X20) |
| 13 |
90301-ZV7-000 |
NUT, CASTLE |
| 14 |
90503-ZV5-000 |
WASHER (22MM) |
| 15 |
90506-ZV4-000 |
WASHER, PLAIN (6MM) |
| 16 |
90506-ZV7-020 |
WASHER, PROPELLER THRUST |
| 17 |
90508-ZV7-000 |
WASHER |
| 18 |
90531-ZV5-000 |
SHIM, FR. BEVEL (51X57X0.50) (D) |
| 19 |
90758-ZV1-000 |
PIN, SPLIT |
| 20 |
91051-ZV5-003 |
BEARING (32X58X17) |
| 21 |
91053-ZV5-003 |
BEARING, NEEDLE (22X28X20) |
| 22 |
91062-HA7-672 |
BEARING, RADIAL BALL (32X58X13) (KOYO) |
| 23 |
91252-ZV5-003 |
SEAL, WATER (22X35X7) |
| 24 |
91351-ZV7-003 |
O-RING (64X3) |
| 25 |
96211-11000 |
BALL, STEEL (#11) (11/32) |
▶RECOIL STARTER (19 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
28418-ZV7-003 |
GUIDE, RECOIL STARTER |
| 6 |
28424-ZV7-003 |
PLATE |
| 7 |
28427-ZV7-003 |
BUSH |
| 8 |
28428-ZV7-003 |
E-RING |
| 10 |
28432-ZV4-003 |
WASHER |
| 11 |
28433-ZV7-003 |
WASHER, THRUST |
| 12 |
28435-ZV4-003 |
STOPPER, REEL |
| 13 |
28436-ZV4-003 |
ARM, STOPPER |
| 14 |
28437-ZV4-003 |
SPRING, STOPPER |
| 15 |
28438-ZV4-003 |
PIN, SPLIT |
| 16 |
28439-ZV7-003 |
SPACER |
| 17 |
28441-ZV7-003 |
SPRING, FRICTION |
| 18 |
28442-ZV7-003 |
SPRING, RECOIL STARTER |
| 21 |
28461-ZV4-013 |
GRIP, STARTER |
| 23 |
28471-ZV7-003 |
ROLLER, STARTER |
| 24 |
28476-ZV7-003 |
GUIDE, ROLLER |
| 25 |
90021-ZV7-003 |
BOLT (6X20) |
| 26 |
90022-ZV4-003 |
BOLT, HEX. (6X14) |
| 27 |
95701-06022-02 |
BOLT, FLANGE (6X22) |
▶SHIFT SHAFT (14 parts)
| Ref |
OEM Part # |
Part Name |
| 4 |
16915-ZV4-000 |
SUSPENSION, STRAINER |
| 6 |
17940-ZV7-000 |
CABLE, NEUTRAL STARTING |
| 8 |
24210-ZV1-010 |
SPRING, CLICK |
| 9 |
24221-ZV4-010 |
SPRING, CLICK ASSIST |
| 10 |
24610-ZV7-010 |
SHAFT, SHIFT |
| 11 |
24611-ZV7-300 |
SHAFT, SHIFT |
| 12 |
24621-ZV4-010 |
BUSH, SHAFT |
| 13 |
24625-ZV5-010 |
PLATE, SHIFT |
| 14 |
24626-ZV5-010 |
PLATE, SHIFT SHAFT |
| 18 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 19 |
90019-ZV1-010 |
BOLT, FLANGE (5X10) (CT200) |
| 22 |
90603-ZV4-000 |
CLIP, TUBE (B10) |
| 23 |
90628-750-000 |
CLIP (14MM) |
| 25 |
94305-30203 |
PIN, SPRING (3X20) |
▶SHORT BLOCK (0 parts)
▶STERN BRACKET (18 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
50122-935-010 |
PLATE, PUSH |
| 2 |
50300-ZW9-832ZA |
BRACKET, R. STERN *NH282MU* (OYSTER SILVER METALLIC-U) |
| 3 |
50310-ZW9-833ZA |
BRACKET, L. STERN *NH282MU* (OYSTER SILVER METALLIC-U) |
| 4 |
50323-ZV4-310ZB |
GRIP, CLAMP *NH282MU* (OYSTER SILVER METALLIC-U) |
| 6 |
50331-ZV5-000 |
CAP, TILTING BOLT |
| 8 |
50340-ZV7-010 |
ROD, ADJUSTING |
| 9 |
50341-ZV7-310 |
ROD, ADJUSTING |
| 10 |
50342-ZV5-300 |
STOPPER, ROD |
| 11 |
50343-ZV7-300 |
SPRING, ADJUSTING ROD |
| 12 |
50381-ZZ5-000 |
SHAFT, TILTING |
| 13 |
90108-ZV7-000 |
BOLT, HEX. (8X163) |
| 14 |
90304-ZV5-013 |
NUT, SELF-LOCK (7/8-14UNF) |
| 15 |
90305-ZV4-000 |
NUT, SELF-LOCK (8MM) |
| 16 |
90507-ZV4-000 |
WASHER, PLAIN (8MM) |
| 17 |
90517-ZV5-000 |
WASHER, WAVE (22MM) |
| 19 |
91501-ZV7-000 |
COLLAR, DISTANCE (8MM) |
| 20 |
94305-25083 |
PIN, SPRING (2.5X8) |
| 21 |
94305-40143 |
PIN, SPRING (4X14) |
▶SWIVEL CASE (32 parts)
| Ref |
OEM Part # |
Part Name |
| 3 |
50151-ZV5-000 |
RUBBER, MOUNTING (UPPER) |
| 4 |
50153-ZV5-000 |
RUBBER, MOUNTING (UPPER) (B) |
| 5 |
50167-ZV7-000ZA |
HOLDER, MOUNTING (UPPER) *NH282MU* (OYSTER SILVER METALLIC-U) |
| 6 |
50201-ZW2-F30ZA |
CASE, SWIVEL *NH282MU* (OYSTER SILVER METALLIC-U) |
| 7 |
50211-ZV5-003 |
LINER, SWIVEL CASE |
| 9 |
50214-ZV5-003 |
BUSH, SWIVEL CASE |
| 10 |
50233-881-000 |
SPRING, FRICTION ADJUSTING |
| 14 |
50516-ZV4-300 |
SPRING, TILT LINK |
| 16 |
50518-ZV7-000 |
ARM, REVERSE LOCK |
| 19 |
50521-ZV1-000 |
BUSH, TILT LEVER |
| 20 |
50522-ZV4-000 |
BUSH, TILT LEVER |
| 22 |
50526-ZV4-000 |
BRACKET, TILT SHAFT |
| 25 |
50531-ZV7-000 |
SHAFT, REVERSE LOCK (A) |
| 26 |
50532-ZV4-000 |
SHAFT, REVERSE LOCK (B) |
| 29 |
90101-ZV1-000 |
BOLT, HEX. (6X18) |
| 30 |
90101-ZV5-003 |
BOLT, SPECIAL (10X130) |
| 32 |
90109-ZV4-000 |
BOLT, SPECIAL (8X20) |
| 33 |
90109-ZV5-000 |
BOLT, STUD (10X28) |
| 35 |
90306-ZW4-003 |
NUT, FLANGE (10MM) |
| 38 |
90501-ZV5-000 |
WASHER, WAVE (40MM) |
| 39 |
90504-ZV5-000 |
WASHER, THRUST (34MM) |
| 40 |
90504-921-010 |
WASHER, PLAIN (6MM) |
| 41 |
90505-ZV4-000 |
WASHER, LOCK |
| 42 |
90506-ZV4-000 |
WASHER, PLAIN (6MM) |
| 45 |
90651-ZV5-000 |
CIRCLIP (OUTER) (39MM) |
| 46 |
90759-ZV1-000 |
PIN, SPLIT (2.0) |
| 47 |
90951-ZV7-010 |
NIPPLE, GREASE |
| 48 |
91256-ZV5-003 |
OIL SEAL (39.5X52X6) (ARAI) |
| 50 |
94002-06490-0S |
NUT, HEX. (6MM) |
| 51 |
94305-25223 |
PIN, SPRING (2.5X22) |
| 52 |
94305-25253 |
PIN, SPRING (2.5X25) |
| 53 |
94305-30253 |
PIN, SPRING (3X25) |
▶THROTTLE ROD (15 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
16400-ZV5-015 |
DIAPHRAGM ASSY. |
| 2 |
17838-ZV5-000 |
LINKAGE, PIVOT |
| 3 |
17840-ZV7-000 |
ROD, THROTTLE |
| 4 |
17927-ZV5-000 |
PLATE, ASSIST |
| 5 |
17928-ZV5-000 |
SPRING, ASSIST |
| 6 |
17937-ZV5-010 |
CAM, THROTTLE OPENER |
| 7 |
17938-ZV5-000 |
SPRING, OPENER CAM RETURN |
| 8 |
17946-ZV5-000 |
CAM, THROTTLE |
| 9 |
90011-ZV5-003 |
BOLT, TORX (6X14) |
| 10 |
90202-ZV0-000 |
NUT, CAP (6MM) |
| 11 |
90511-ZV4-000 |
WASHER, PLAIN (6MM) |
| 12 |
91504-ZV5-000 |
COLLAR (6.7X12.5X24) |
| 13 |
94001-05490-0S |
NUT, HEX. (5MM) |
| 14 |
95701-06032-02 |
BOLT, FLANGE (6X32) |
| 15 |
95701-06040-02 |
BOLT, FLANGE (6X40) |
▶TIMING BELT (12 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
14315-ZV7-000 |
PULLEY, TIMING |
| 3 |
14323-ZV7-000 |
PLATE, TIMING BELT GUIDE |
| 4 |
14400-ZV7-014 |
BELT, TIMING |
| 6 |
14515-ZV5-000 |
CAP, TIMING BELT TENSIONER |
| 7 |
14520-ZV7-010 |
SPRING, TIMING BELT ADJUSTING |
| 8 |
14522-ZV5-000 |
BOOT, SPRING |
| 13 |
90013-ZV0-010 |
BOLT, FLANGE (6X12) (CT200) |
| 15 |
90202-ZV7-000 |
NUT, LOCK (34MM) |
| 18 |
94301-10160 |
PIN, DOWEL (10X16) |
| 19 |
95701-06022-02 |
BOLT, FLANGE (6X22) |
| 20 |
95701-08025-02 |
BOLT, FLANGE (8X25) |
| 21 |
95701-10038-08 |
BOLT, FLANGE (10X38) |
▶TOOLS (7 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
28470-816-000 |
ROPE, STARTER |
| 5 |
89301-921-010 |
SCREWDRIVER, CHECK BOLT |
| 6 |
99001-10120 |
SPANNER (10X12) |
| 7 |
89210-GBJ-J10 |
PLIERS (135) (KOWA) |
| 8 |
99003-10000 |
DRIVER 1, PLUS SCREW (NO.2) |
| 9 |
99003-30000 |
DRIVER 3, MINUS SCREW (NO.2) |
| 10 |
99003-40000 |
LEVER |
▶WATER HOSE JOINT (4 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 |
19272-881-810 |
SEAT, WATER MOUTH |
▶WATER PUMP (35 parts)
| Ref |
OEM Part # |
Part Name |
| 1 |
19210-ZV7-003 |
IMPELLER, PUMP |
| 2 |
19221-ZV5-000 |
HOUSING, IMPELLER |
| 3 |
19223-ZV5-000 |
LINER, PUMP |
| 4 |
19231-ZV7-000 |
COVER, IMPELLER |
| 5 |
19233-ZV5-000 |
GASKET B, IMPELLER |
| 6 |
19241-ZV5-000 |
HOUSING, WATER PUMP |
| 7 |
19242-ZV5-000 |
GASKET, WATER PUMP |
| 8 |
19251-ZV7-721 |
TUBE, WATER (L) |
| 9 |
19253-ZV5-000 |
RING, WATER TUBE SEAL |
| 10 |
24310-ZV7-723 |
ROD, SHIFT (L) |
| 12 |
24312-ZV7-000 |
JOINT, SHIFT ROD |
| 13 |
24320-ZV7-000 |
ROD A, SHIFT |
| 16 |
40204-ZV5-000 |
GROMMET, EXTENSION CASE |
| 17 |
41112-ZV7-720 |
SHAFT, VERTICAL (L) |
| 18 |
41116-ZV5-000 |
SLINGER, OIL |
| 19 |
41131-ZV7-000 |
PINION |
| 20 |
90105-881-000 |
BOLT, HEX. (6X12) |
| 21 |
90114-881-000 |
BOLT, HEX. (6X40) |
| 22 |
90303-ZV7-000 |
NUT, SPECIAL (10MM) |
| 23 |
90452-GK4-600 |
WASHER, PLAIN (5MM) |
| 24 |
90512-ZV4-000 |
WASHER, PLAIN (6MM) |
| 25 |
90512-921-010 |
WASHER (6MM) |
| 26 |
90521-ZV5-000 |
SHIM, GEAR (40X46X0.50) (D) |
| 27 |
90752-ZV7-000 |
KEY, WOODRUFF (5MM) |
| 28 |
90754-921-010 |
PIN (5X17) |
| 29 |
90756-921-000 |
PIN, SPLIT (1.6MM) |
| 30 |
91052-ZV5-003 |
BEARING, NEEDLE (7/8X11/8X1) |
| 31 |
91054-ZV5-003 |
BEARING (25X47X15) |
| 32 |
91251-ZV5-003 |
SEAL, WATER (17X30X7) |
| 33 |
91253-921-003 |
SEAL, WATER (6MM) |
| 36 |
91356-ZV5-000 |
O-RING, WATER PUMP |
| 37 |
91555-ZV5-000 |
COLLAR, IMPELLER HOUSING |
| 38 |
94001-06490-0S |
NUT, HEX. (6MM) |
| 39 |
94305-20122 |
PIN, SPRING (2X12) |
| 40 |
96220-25138 |
ROLLER (2.5X13.8) |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Honda BF25 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.
