Mercury V-225 (5628028 AND UP) Parts & Diagrams

🔎 Mercury V-225 Reference Library — Exploded parts diagrams (22 diagrams), specifications, common issues, and maintenance checklist.

The Mercury V-225 is a 2-Stroke EFI, V6 60-degree outboard motor. Designed for large center-consoles, offshore sport-fishing boats, and multi-engine configurations.

Quick Reference Specifications

Specification	Value
Engine Type	2-Stroke EFI, V6 60-degree
Horsepower	225 HP
Displacement	3032 cc (3.0L / 185 CID)
Bore x Stroke	89 mm x 81.5 mm (3.501 in. x 3.208 in.)
Spark Plug (Type & Gap)	NGK BPZ8HS-10
Engine Oil Capacity	—
Recommended Engine Oil	Mercury 2-Stroke Outboard Oil (TCW-3)
Gear Case Oil Capacity	1,150 mL (38.9 oz)
Idle Speed (in gear)	650–700 RPM (in gear)
Full Throttle RPM Range	5000-5800
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 V-225:

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 V-225.

▶CARBURETOR ASSEMBLY (15 parts)

Ref	OEM Part #	Part Name
-	1395-7826	REPAIR PARTS KIT
1	1386-7599A13	CARBURETOR (BOTTOM) WH-20
4	1395-6032	PLATE, COVER
6	1395-7822	FUEL BOWL (CENTER/BOTTOM)
8	1395-6025	PLUG, MAIN JET
10	1395-6207	JET, MAIN FUEL (.072)
13	1395-7824	INLET NEEDLE AND SEAT ASSEMBLY
16	1395-9267	FLOAT
19	1399-5317	JET, IDLE AIR (.046 - WH-20
21	1399-5315	JET, IDLE AIR (.042) - WH-15
22	1395-6027	SCREW, THROTTLE LEVER
23	87607	LEVER, THROTTLE
25	1395-6031	SPACER, THROTTLE LEVER
26	1395-6022	SHAFT, THROTTLE
28	1395-6023	VALVE, THROTTLE

▶COWL MOUNTING BRACKET (28 parts)

Ref	OEM Part #	Part Name
1	76258A2	BRACKET, REAR COWL
2	22-76256	NOZZLE, TELL TALE
4	67984	SEAL, REAR COWL BRACKET TO COWL
5	67228	SEAL, REAR COWL BRACKET TO COWL
6	67999	SEAL, REAR COWL BRACKET TO COWL
7	32-8M0108355	HOSE, TELL TALE (9") - USE WITHOUT REF. #7B TEE
7A	32-8M0108355	HOSE, TELL TALE (4") - USE WITH REF. #7B TEE
7B	22-90824001	TEE, TELL TALE HOSE - USE WITH REF. #7B TEE
8	61990	STA-STRAP, TELL TALE HOSE
9	86386A1	BRACKET ASSEMBLY, COWL SUPPORT
10	10-66687	SCREW, REAR COWL BRACKET (1-1/2")
11	85650	HOUSING, COWL HINGE - STARBOARD
12	10-64278	SCREW, COWL HINGE HOUSING (1")
13	12-20583	WASHER, COWL HINGE HOUSING SCREW
14	11-8267089	NUT, COWL HINGE HOUSING SCREW
15	87587	BRACKET, COWL MOUNTING - LOWER
16	88804	RETAINER, WIRING HARNESS
17	10-88865	SCREW, RETAINER TO BRACKET (1-3/4")
18	88508	SEAL, CONTROL CABLES
19	67241	HOUSING, COWL LATCH
20	10-57807	SCREW, COWL LATCH HOUSING (3/4")
21	87608	COWL LATCH
22	24-60295	SPRING, COWL LATCH
23	10-69093	SCREW, GROMMET AND LOWER BRACKET
24	12-35280	WASHER, LOWER BRACKET SCREW (LARGE)
25	12-69057	WASHER, LOWER BRACKET SCREW (SMALL)
26	25-88033	GROMMET, LOWER BRACKET
27	23-88180	BUSHING, LOWER BRACKET GROMMET

▶COWLS AND FRONT COVER (21 parts)

Ref	OEM Part #	Part Name
1	2151-7523A2	COWL ASSEMBLY, PORT (WITHOUT DECALS)
2	67260	SEAL, CONTROL CABLE
3	67258	PAD, COWL ASSEMBLY TO FRONT COVER
4	88227	BLANKET, SOUND-COWL (PORT)
5	879871	BRACKET, COWL ATTACHING - UPPER
6	87985	BRACKET, COWL ATTACHING - LOWER
7	10-35386	SCREW, UPPER AND LOWER BRACKETS
8	68048	SHIELD, INLET - COWL (PORT)
9	10-57807	SCREW, SHIELD TO COWL
10	2150-7524A1	COWL ASSEMBLY, STARBOARD (WITHOUT DECALS)
11	88227	BLANKET, SOUND - COWL (STARBOARD)
12	90274	SEAL, HARNESS
13	97461A2	LATCH, COWL - PORT
14	87899	LATCH, COWL - STARBOARD
15	10-95700	SCREW, COWL LATCH
16	12-22887	WASHER, COWL LATCH SCREW
17	2149-7532A2	COWL FRONT COVER ASSEMBLY (WITHOUT DECALS)
18	90984	BLANKET, SOUND - COWL FRONT COVER
19	87907	HOOK, COWL FRONT COVER ATTACHING
20	10-95700	SCREW, HOOK TO COWL FRONT COVER
21	47341A11	STARTER ROPE ASSEMBLY Comment: (FOR MANUAL STARTING)

▶CRANKSHAFT, PISTONS AND CONNECTING RODS (17 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	455-8745T5	CRANKSHAFT ASSEMBLY
2	30-67923T	BALL BEARING, CRANKSHAFT (LOWER)
3	53-67446	RETAINING RING, BALL BEARING
4	54196A6	CARRIER ASSEMBLY, SEAL
5	65800	SEAL, CARRIER
6	39-67377T	RING, SEALING - CRANKSHAFT (.124 THICK)
7	31-93495T	ROLLER BEARING, CRANKSHAFT
8	53-67444	RETAINING RING, ROLLER BEARING
10	766-8667T41	PISTON ASSEMBLY (PORT)
11	39-813011A12	PISTON RING ASSEMBLY
12	53-857196	LOCK RING, PISTON
13	636-8119A6	CONNECTING ROD ASSEMBLY
14	10-76349	SCREW, CONNECTING ROD
15	12-8M0032839	WASHER, NEEDLE LOCATING
16	8M0234886	ROLLER BEARING ASSEMBLY, CRANKSHAFT END
17	29-67483	NEEDLE BEARING, PISTON END

▶CYLINDER BLOCK AND END CAPS (36 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	858-7801A3	CYLINDER BLOCK AND CRANKCASE ASS'Y
2	16-76175	STUD, POWERHEAD (1-7/8")
3	16-8M0034454	STUD, POWERHEAD (6-15/16")
4	17-43044	DOWELL PIN, LOCATING
5	17-8M0036405	DOWEL PIN, CYLINDER BLOCK
6	27-11338	GASELETT, SEALING
7	8M0088723	COVER, STARTER MOTOR (UPPER)
8	10-73657	SCREW, COVER TO CRANKCASE (1-1/2")
9	13-8M0204647	LOCKWASHER, STARTER MOTOR COVER SCREW
10	76867	COVER, STARTER MOTOR (LOWER)
11	10-815549	SCREW, COVER TO CRANKCASE (2")
12	10-74824	SCREW, CRANKCASE TO CYLINDER BLOCK (1-1/4")
13	1159-8454T2	END CAP ASSEMBLY, UPPER
14	25-54029	"O" RING END CAP (2-7/8" I.D.)
15	31-93496T	ROLLER BEARING, END CAP
16	26-41953	OIL SEAL, END CAP
17	10-30225	SCREW, UPPER END CAP TO CYLINDER BLOCK (1")
19	10-24220	SCREW, SET - CYLINDER BLOCK (3/16")
20	22-38407	PLUG, CYLINDER BLOCK (WATER JACKET)
21	16-15094	STUD Comment: FLYWHEEL COVER TO CYLINDER BLOCK (1-7/8")
23	23-67269	SPACER, FLYWHEEL COVER STUD
24	12-8M0204663	WASHER, FLYWHEEL COVER STUD
25	12-22887	WASHER, FLYWHEEL COVER STUD
26	11-816874	NUT, FLYWHEEL COVER STUD
27	87691	BRACKET, FLYWHEEL COVER
28	10-8M0214943	SCREW, BRACKET TO CRANKCASE (1")
29	16-8M0034435	STUD, FLYWHEEL COVER TO BRACKET (1")
30	1156-7809T1	END CAP ASSEMBLY, LOWER
31	25-62700	"O" RING, END CAP
32	26-41953	OIL SEAL, END CAP
33	10-28636	SCREW Comment: LOWER END CAP TO CYLINDER BLOCK (3/4")
34	13-26992	LOCKWASHER, LOWER END CAP SCREW
35	10-64022	SCREW, ADJUSTING - CYLINDER BLOCK
36	11-64015	NUT, JAM - ADJUSTING SCREW
37	52023	CAP, NYLON - ADJUSTING SCREW

▶DRIVE SHAFT HOUSING AND EXHAUST TUBE (35 parts)

Ref	OEM Part #	Part Name
--	27-89221A80	GASKET SET
1	1590-8343A7	DRIVE SHAFT HOUSING ASSEMBLY
2	16-74732	STUD, DRIVE SHAFT HOUSING (EXTRA LONG SHAFT)
3	54-8M0036782	CLAMP, LOWER MOUNT
4	10-66727	SCREW, LOWER MOUNT CLAMP (1-1/4")
5	100-8M4500752	COVER, LOWER MOUNT CLAMP
6	10-88417	SCREW, COVER ATTACHING (5/8")
7	11-35521	NUT, NYLON - COVER TO CLAMP SCREW
8	67703	STRAP, SWIVEL BRACKET RETAINING
9	10-67769	SCREW, STRAP TO DRIVE SHAFT HOUSING
10	11-25269	NUT, STRAP TO DRIVE SHAFT HOUSING SCREW
11	12-73862	WASHER, GEAR HOUSING STUD
12	11-29489	NUT, GEAR HOUSING STUD (CAP)
13	12-45176	WASHER, GEAR HOUSING STUD
14	11-8M0204653	NUT, GEAR HOUSING STUD
15	19-64649	PLUG, DRIVE SHAFT HOUSING
16	89743	TUBE, EXHAUST
17	66350001	SEAL, EXHAUST TUBE-LOWER
18	86027	SEAL, EXHAUST TUBE - UPPER
19	32-8M0042790	TUBE, WATER (EXTRA LONG SHAFT)
20	27-991734	GASKET, DRIVE SHAFT HOUSING TO PLATE
21	41945A6	PLATE ASSEMBLY, DRIVE SHAFT HOUSING
22	707482	SEAL, BRACKET
23	68011	BRACKET, SEAL RETAINING
24	10-48408	SCREW, BRACKET TO PLATE (1/2")
25	17-43044	DOWEL PIN, LOCATING
26	26-38970	SEAL, WATER TUBE
27	27-991772	GASKET, DRIVE SHAFT HOUSING PLATE
28	12-20553	WASHER, POWERHEAD STUD
29	11-69254	NUT, POWERHEAD STUD
30	41941T	DIFFUSER, EXHAUST
31	27-782461	GASKET, EXHAUST DIFFUSER
32	16-66021	STUD, DIFFUSER TO PLATE
33	12-20533	WASHER, DIFFUSER STUD
34	11-30506	NUT, DIFFUSER STUD

▶ENRICHER VALVE AND SOUND ATTENUATOR (29 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	67245T	BRACKET, COWL MOUNTING - UPPER
2	25-67272	GROMMET, COWL MOUNTING BRACKET
3	90435	MOUNT, COWL MOUNTING BRACKET
4	12-21249	WASHER, MOUNT ATTACHING
5	11-8267089	NUT, MOUNT ATTACHING
6	90552A2	HIGH SPEED CONTROL ASSEMBLY
7	27-89221	GASKET, SOUND ATTENUATOR TO CARBURETOR
8	88509	PLATE, SOUND ATTENUATOR
9	43440T	INLET, SOUND ATTENUATOR
10	10-48408	SCREW, INLET TO SOUND ATTENUATOR
11	27-877361	GASKET, COVER
12	93518A1	COVER, SOUND ATTENUATOR
13	10-48408	SCREW, COVER TO SOUND ATTENUATOR
14	10-88488	SCREW, SOUND ATTENUATOR (3-1/4")
15	10-884891	SCREW, SOUND ATTENUATOR (2-1/2")
16	12-35462	WASHER, SOUND ATTENUATOR SCREW Comment: USED ON EARLY STYLE ENGINES
17	25-89079	GROMMET, SOUND ATTENUATOR SCREW Comment: USED ON EARLY STYLE ENGINES
18	42859A2	VALVE, ENRICHER
19	22-90275	CONNECTOR, ENRICHER VALVE (BOTTOM)
20	22-67902	CONNECTOR, ENRICHER VALVE (SIDE)
21	90345	BRACKET, ENRICHER VALVE
22	10-89075	SCREW, VALVE TO BRACKET
23	23-28688	SCREW, BRACKET TO REED BLOCK HOUSING (7/8")
24	86-45915	TERMINAL BLOCK, REED BLOCK HOUSING
25	10-69079	SCREW, TERMINAL BLOCK ATTACHING
26	10-69079	SCREW, WIRE TO TERMINAL BLOCK
27	32-9938779	FUEL LINE, MIDDLE CARBURETOR TO VALVE
28	32-9912688	FUEL LINE Comment: VALVE TO CARBURETOR TO CARBURETOR

▶EXHAUST MANIFOLD AND EXHAUST PLATE (33 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	858-7801A3	CYLINDER BLOCK AND CRANKCASE ASS'Y
2	27-904841	GASKET, DIVIDER PLATE
3	99169A1	PLATE, DIVIDER
4	26-814754	SEAL, DIVIDER PLATE
5	95067	COVER, EXHAUST MANIFOLD
6	10-74824	SCREW, COVER AND PLATE TO CYLINDER BLOCK (1-1/4")
7	54-47483	"J" CLIP, COVER AND PLATE SCREW
8	90435	MOUNT, RUBBER - EXHAUST MANIFOLD COVER
9	12-21249	WASHER, RUBBER MOUNT
10	11-8267089	NUT, RUBBER MOUNT
11	8M0039767	COVER, RELIEF VALVE
12	10-38837	SCREW, COVER TO CYLINDER BLOCK (1-1/8")
13	27-78690002	GASKETT, RELIEF VALVE PLATE
14	65664	PLATE, RELIEF VALVE
15	648771	DIAPHRAM
16	12-76451	WASHER, DIAPHRAGM SCREW
17	10-69570	SCREW, DIAPHRAGM TO PLATE (3/4")
18	24-64878	SPRING, COMPRESSION - POPPET VALVE
19	86596	POPPET, VALVE
20	65848	CARRIER, POPPET RELIEF
21	25-64872	GROMMET, POPPET RELIEF
22	27-8231422	GASKET, EXHAUST PLATE
23	41944A5	PLATE ASSEMBLY, EXHAUST
24	22-996642	ELBOW, EXHAUST PLATE
25	707482	SEAL, EXHAUST PLATE
26	680101	BRACKET, SEAL REATAINING
27	10-48408	SCREW, BRACKET TO EXHAUST PLATE (1/2")
28	17-43044	DOWEL PIN, LOCATING - EXHAUST PLATE
31	23-27132	BUSHING, EXHAUST PLATE
32	10-66727	SCREW, EXHAUST PLATE (1-1/4")
33	10-68783	SCREW, EXHAUST PLATE (2-1/2")
34	10-898833	SCREW, EXHAUST PLATE (3-1/2")

▶FLYWHEEL, STARTER MOTOR AND IGNITION COILS (42 parts)

Ref	OEM Part #	Part Name
1	79918A1	COVER ASSEMBLY, FLYWHEEL
2	79022	MARKER, TIMING
3	10-37572	SCREW, TIMING MARKER
4	12-72761	WASHER, TIMING MARKER SCREW
5	19-45907	PLUG, FLYWHEEL
5A	19-89219001	PLUG, FLYWHEEL COVER
6	11-52901	NUT, FLYWHEEL
7	12-33001	WASHER, FLYWHEEL
8	257-7555A3	FLYWHEEL ASSEMBLY, COMPLETE
9	10-32417	SCREW, FLYWHEEL PLATE
10	10-68997	SCREW, FLYWHEEL HUB
11	398-5454A7	STATOR ASSEMBLY
12	10-75840	SCREW, STATOR (7/8")
13	13-26996	LOCKWASHER, STATOR SCREW
14	54-22875	CLIP, STATOR HARNESS
15	10-69079	SCREW, CLIP TO CYLINDER BLOCK
16	8M0084613	"C" WASHER, HARNESS CLIP
17	96455A9	TRIGGER PLATE ASSEMBLY
18	54-8M0024808	CLAMP Comment: TRIGGER HARNESS AND STATOR HARNESS
19	74897T	PIVOT, TRIGGER PLATE
20	76035	LINK ROD, TRIGGER PLATE
21	11-45076	NUT, LINK ROD
22	62459T	BALL JOINT, TRIGGER PLATE
23	11-46438	NUT, BALL JOINT
24	50-86976	STARTER MOTOR (BOSCH)
25	23-8M0034918	COLLAR, STARTER MOTOR
27	8M0043376	STOP, RUBBER - STARTER MOTOR
28	13-26992	LOCKWASHER, STARTER MOTOR TERMINAL
29	11-20890	NUT, STARTER MOTOR TERMINAL
30	84-93389A5	WIRE, SOLENOID TO STARTER MOTOR (YELLOW)
31	10-69035	SCREW, CABLE TO STARTER MOTOR
32	84-93388A1	WIRE, PLATE TO STARTER MOTOR (BLACK)
33	67614	COVER, IGNITION COIL
34	10-88447	SCREW, IGNITION COIL COVER (1-5/8")
35	339-832757A4	COIL ASSEMBLY, IGNITION
36	11-45076	NUT, IGNITION COIL TERMINAL
37	84-88807A6	GROUND STRAP, IGNITION COIL (BLACK)
38	84-813715A1	CABLE, HIGH TENSION
39	332-2854T01	BOOT, HIGH TENSION CABLE
40	85-63709A1	PROTECTOR, HIGH TENSION CABLE
41	33-896329827	SPARK PLUG (AC#V40FFM)
42	84-69739A2	HARNESS ASSEMBLY Comment: COIL TO SWITCH BOX (#1, 3 AND 5)

▶FUEL PUMP AND CARBURETOR (45 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	1386-7599A11	CARBURETOR (TOP) WH-20
1A	1386-7599A2	CARBURETOR (CENTER)WH-15
1B	1386-7599A3	CARBURETOR (BOTTOM) WH-15
2	1395-7900	TEE, FUEL INLET (UPPER AND MIDDLE)
3	1395-7901	FITTING, FUEL INLET (LOWER)
4	27-67751	GASKET, CARBURETOR
5	11-8M0207775	NUT, CARBURETOR MOUNTING
6	32-8M0108355	HOSE, CARBURETOR FUEL PUMP (17"-4")
7	54-68424	CLAMP, FUEL HOSE TO CARBURETOR
8	88853A1	FUEL PUMP ASSEMBLY
9	21-30430A11	CHECK VALVE ASSEMBLY
10	90363A1	DIAPHRAM ASSEMBLY
15	35-59072	SCREEN, FUEL INLET
18	17-26618	DOWEL PIN, FUEL PUMP LOCATING
19	21-42657A3	CHECK VALVE ASSEMBLY, FUEL PUMP
20	23004	RETAINER, CHECK VALVE
21	10-43723	SCREW, RETAINER ATTACHING
22	90728	BASE, FUEL PUMP
23	88848	CHAMBER, PULSE - FUEL PUMP
24	35-91078A1	COVER, FUEL FILTER
25	10-89766	SCREW, FUEL FILTER COVER (5/8")
26	10-88447	SCREW, FUEL PUMP (1-1/2")
27	13-26996	LOCKWASHER, FUEL PUMP SCREW
28	22-54090	FITTING, FUEL OUTLET
29	24-86207	SPRING, COMPRESSION
30	86026	RETAINER, SPRING
31	86252	CAP, SPRING END
32	32-89020	FUEL LINE, INLET (6-3/4")
33	22-63981	FITTING, INLET FUEL LINE (90 DEG.)
34	22833	ADAPTOR, CHECK UNIT
35	23069	STEM, CHECK UNIT ADAPTOR
36	25-16524	"O" RING, ADAPTOR STEM
37	24-23067T	SPRING, ADAPTOR STEM
38	30188	CUP WASHER, ADAPTOR
39	10-76596	SCREW, ADAPTOR TO LOWER BRACKET
40	87604	THROTTLE LINK
41	828277A1	THROTTLE LEVER ASSEMBLY
43	17-67297	CLEVIS PIN Comment: THROTTLE LEVERS TO THROTTLE LINK
44	12-89302	WASHER, CLEVIS PIN
45	18-26953	COTTER PIN, CLEVIS PIN ATTACHING
46	10-15124	SCREW Comment: THROTTLE LEVERS TO THROTTLE STOP (3/4")
47	13-26996	LOCKWASHER, THROTTLE LEVERS SCREW
48	12-24676	WASHER, THROTTLE LEVERS SCREW
49	67748	ROLLER, LOWER THROTTLE LEVER

▶GEAR HOUSING (DRIVE SHAFT) (51 parts)

Ref	OEM Part #	Part Name
-	26-55682A1	SEAL REPAIR KIT
1	1647-8688T9	GEAR HOUSING ASSEMBLY
1A	22-85822A10	CONNECTOR ASSEMBLY, SPEEDOMETER
2	66884	INSERT, WATER-PORT
3	10-76156	SCREW, INSERT TO GEAR HOUSING
4	11-859124	NUT, INSERT TO GEAR HOUSING SCREW
5	17-43044	DOWEL PINE, GEAR HOUSING LOCATING
6	16-78639	STUD, GEAR HOUSING (9")(EXTRA LONG SHAFT)
7	16-74730	STUD, GEAR HOUSING (7-1/16")(EXTRA LONG SHAFT)
8	16-8M0034463	STUD, WATER PUMP (3-3/8")
9	16-69501	STUD,WATER PUMP(3-1/8")
10	31-35934A1	BEARING,ROLLER-DRIVE SHAFT
11	23-98621	SLEEVE, LUBRICATION
12	45-41509A2	DRIVE SHAFT ASSEMBLY (EXTRA LONG SHAFT)
13	24-34576	SPRING, DRIVE SHAFT PIN
14	17-30545	PIN, DRIVE SHAFT
15	43-98647	GEAR, PINION
16	11-35921	NUT,PINION GEAR TO DRIVE SHAFT
17	15-57007A1	SHIM ASSEMBLY, ROLLER BEARING
18	31-53079A1	ROLLER BEARING, DRIVE SHAFT
19	27-8M0214962	GASKET,WATER PUMP
20	25-8M0214923	"O"RING,WATER PUMP BASE
21	46-96146A6	WATER PUMP BASE ASSEMBLY
22	26-89238	OIL SEAL, WATER PUMP BASE
23	26-16977	OIL SEAL, WATER PUMP BASE
24	17-35973	DOWEL PIN, WATER PUMP
25	27-8M0090319	GASKET, LOWER-WATER PUMP
26	8M0204677	PLATE, FACE
27	27-858524	GASKET,UPPER-WATER PUMP
28	46-96148T1	WATER PUMP BODY ASSEMBLY
29	48752T	INSERT, WATER PUMP BODY
30	26-38970	SEAL, RUBBER-WATER INLET TUBE
31	47-89984T4	IMPELLER, WATER PUMP
32	28-8M0214992	KEY,IMPELLER DRIVE
33	10-8M0215009	SCREW,WATER PUMP (2-1/4"-HEX WASHER HEAD)
34	12-8M0204649	WASHER, WATER PUMP SCREW AND STUD
35	11-35888	NUT, WATER PUMP STUD
36	12-36001	WASHER, WATER PUMP BODY STUD
37	11-826709111	NUT, WATER PUMP BODY STUD
38	25-8M0214918	RING Comment: RUBBER-CENTRIFUGAL SLINGER (DRIVE SHAFT)
39	23-29804T	SLEEVE, GUIDE-WATER INLET TUBE
40	789022	SHAFT, SHIFT-LOWER
41	53-29641	"E"RING,RETAINING-SHIFT SHAFT
42	53-78907	RETAINING RING
43	25-25439	"O"RING,SHIFT SHAFT BUSHING
44	23-77631A2	BUSHING ASSEMBLY,SHIFT SHAFT
45	26-892361	OIL SEAL, SHIFT SHAFT BUSHING
46	12-77674	WASHER,RUBBER-SHIFT SHAFT BUSHING
47	10-79953Q04	SCREW, GREASE FILLER
47A	22-8M0058389	SCREW,DRAIN (MAGNETIC)
48	12-191833	WASHER, GREASE FILLER AND DRAIN SCREW

▶GEAR HOUSING (PROPELLER SHAFT) (36 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	1647-8688T9	GEAR HOUSING ASS'Y Comment: SEE "TRANSOM BRACKETS" FOR BREAKDOWN
49/50	89594A1	CAM FOLLOWER
51	79911A1	ROD,CLUTCH ACTUATOR
52	24-79910	SPRING, COMPRESSION
53	12-78910	WASHER,COMPRESSION SPRING
54	17-8M0084245	PIN, SPRING LOCATOR
55	15-47397A1	SHIM, BEARING OUTER RACE(.002-3-5-10)
56	31-78172A1	TAPERED ROLLER BEARING ASSEMBLY
57	31-73363T	ROLLER BEARING, FORWARD GEAR
58	43-43491T1	FORWARD GEAR
59	52-823174T	RATCHET, SLIDING CLUTCH
60	17-8M0084243	CROSS PIN,RATCHET TO PROPELLER SHAFT
61	17-78909	DETENT PIN, RATCHET
62	24-78962	SPRING, RETAINING-CROSS PIN
63	44-94148	PROPELLER SHAFT
64	43-78908	REVERSE GEAR
65	681001	THRUST RING Comment: BEARING CARRIER TO GEAR HOUSING
66	30-88957T	BALL BEARING, REVERSE GEAR
67	25-8M0214920	"O"RING, BEARING CARRIER
68	43567T1	BEARING CARRIER ASSEMBLY
69	31-30956T	ROLLER BEARING, BEARING CARRIER
70	26-8M0204670	OIL SEAL, BEARING CARRIER (INNER)
70A	26-8M0205729	OIL SEAL, BEARING CARRIER (OUTER)-CUTTER
71	28-30281	KEY,LOCATING-BEARING CARRIER
72	14-79447	TAB WASHER, GEAR HOUSING COVER
73	8M2011027	COVER, GEAR HOUSING
74	97-31640Q4	TRIM TAB, GEAR HOUSING
75	10-66024	SCREW,TRIM TAB TO GEAR HOUSING (1-3/4")
76	12-45176	WASHER, DRIVE SHAFT HOUSING STUDS
77	11-8M0204653	NUT,DRIVE SHAFT HOUSING STUDS
78	10-74727	SCREW, GEAR HOUSING (EXTRA LONG SHAFT)
79	12-835467Q01	THRUST HUB
80	12-31211Q03	WASHER,SPLINED-PROPELLER NUT
81	14-816629Q	TAB WASHER, PROPELLER NUT
82	11-52707Q1	PROPELLER NUT

▶HYDRAULIC PUMP AND MOUNTING BRACKETS (27 parts)

Ref	OEM Part #	Part Name
1	823653A9	HYDRAULIC PUMP ASSEMBLY
4	84-61600A9	WIRE,SOLENOID TO SOLENOID (BLACK)
5	84-79138A4	BATTERY CABLE, BALCK (NEGATIVE)
6	87760T	PLATE, MOUNTING
7	10-39349	SCREW,MOUNTING PLATE TO BRACKET (3/4")
8	13-8M0204647	LOCKWASHER,MOUNTING PLATE SCREW
9	10-90271	SCREW,HYDRAULIC PUMP (5/8")
10	13-58643	LOCKWASHER,HYDRAULIC PUMP SCREW
11	87762	BRACKET, HYDRAULIC PUMP
12	10-69698	BOLT,BRACKET TO TRANSOM (3-1/2")
13	13-58643	LOCKWASHER, BRACKET SCREW
14	11-46335	NUT, BRACKET SCREW
15	90318	BRACKET, MOUNTING-STARTER SOLENOID
16	10-90285	SCREW, MOUNTING BRACKET (5/8")
17	12-56720	WASHER, MOUNTING BRACKET SCREW
18	11-8M0204718	NUT, MOUNTING BRACKET TO HYDRAULIC PUMP
19	86-45915	TERMINAL BLOCK
21	10-62568	SCREW,WIRE TO TERMINAL BLOCK (3/8")
22	84-74023A1	HARNESS ASSEMBLY, HYDRAULIC PUMP
23	88075	RETAINER, HARNESS TO MOUNTING BRACKET
26	89-853654A1	STARTER SOLENOID
27	10-41508	SCREW, STARTER SOLENOID TO BRACKET (3/8")
28	13-8M0204647	LOCKWASHER Comment: STARTER SOLENOID TERMINAL (5/16")
29	11-8M0204668	NUT, STARTER SOLENOID TERMINAL (5/16-18)
30	46265	BOOT, RUBBER-STARTER SOLENOID TERMINAL
31	10,13-26996	LOCKWASHER,STARTER SOLENOID TERMINAL
32	11-68219	NUT, STARTER SOLENOID TERMINAL (10-32)

▶HYDRAULIC PUMP ASSEMBLY (21 parts)

Ref	OEM Part #	Part Name
-	823653A9	HYDRAULIC PUMP ASSEMBLY
--	17649A02	MOTOR, HYDRAULIC PUMP
1	89492T	ADAPTOR
2	803852	COUPLING
3	96598A1	MANUAL RELEASE (INCLUDES 3 "O" RINGS)
4	89495	PUMP (INCLUDES SCREWS)
5	35-89496	FILTER
6	25-89498	"O"RING, MOTOR END
7	25-89497	"O"RING, RESERVOIR END
8	89499	DIPSTICK
9	90587T	RESERVOIR
10	10-90588	SCREW, RESERVOIR (INCLUDES "O" RING)
11	16-90590	THRU STUD (LONG)
12	89484	END FRAME, DRIVE END
13	89485	ARMATURE
14	12-89482	WASHER,THRUST - ARMATURE
15	89486	FIELD AND FRAME
16	89487	BRUSH CARD
17	89488	END FRAME, COMMUTATOR END
18	10-89489	THRU BOLT, MOTOR (4-9/16")
19	11-89481	NUT,THRU BOLT AND STUD

▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET

▶PROPELLERS RIGHT HAND ROTATION (1 parts)

Ref	OEM Part #	Part Name
-	48-78112A45	PROPELLER ASSEMBLY (ALUMINUM)(PITCH 11") Comment: 3 BLADES

▶REED BLOCK AND CYLINDER HEAD (42 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	95095	CYLINDER HEAD
2	27-41244T02	GASKET, CYLINDER HEAD
3	10-668631	SCREW, CYLINDER HEAD (2-1/2")
4	1026-7270A1	COVER ASSEMBLY, CYLINDER
5	27-65788	GASKET, CYLINDER COVER
6	10-74824	SCREW, CYLINDER COVER (1-1/4")
7	54-47483	"J" CLIP, CYLINDER COVER SCREW
8	75692	THERMOSTAT
9	27-8M0204714	GASKET, THERMOSTAT
10	90390A1	COVER, THERMOSTAT
11	10-35386	SCREW, THERMOSTAT COVER (1")
12	22-68728	FITTING, THERMOSTAT COVER TO WATER HOSES
13	32-77653101	HOSE, WATER DISTRIBUTION (10" AND 14")
14	22-687271	FITTING, ELBOW - WATER HOSES
15	61990	STA-STRAP, WATER HOSES
16	78799	TEMPERATURE SENDER
18	78286	COVER, TEMPERATURE SENDER
19	86-45915	TERMINAL BLOCK
20	10-69079	SCREW Comment: TERMINAL BLOCK TO CYLINDER BLOCK (3/8")
21	10-69079	SCREW, LEADS TO TERMINAL BLOCK (3/8")
22	87628F2	HOUSING, REED BLOCK (7/8")
24	27-127754	GASKET, REED BLOCK HOUSING
25	87692	REED BLOCK
26	34-19719A1	REED ASSEMBLY
27	903911	REED STOP
28	10-57583T	SCREW Comment: REED AND REED STOPS TO REED BLOCK (3/8")
29	16-270372	STUD, CARBURETOR MOUNTING
30	21-426585	CHECK VALVE, BLEED HOSE (STRAIGHT)
31	22-15133	ELBOW, BLEED H OSE (PRESS IN)
32	22-59169003	TEE, BLEED HOSE
33	22-56759	FITTING, BLEED HOSE (PRESS IN)
34	32-9938779	HOSE, BLEED
35	22-782792	ELBOW, REED BLOCK (45 DEG.)
36	22-996642	ELBOW, REED BLOCK (90 DEG.)
37	22-8585531	TEE, REED BLOCK
38	32-7889214	HOSE, REED BLOCK (2-3/4"-4")
39	22-54090	FITTING, PULSE HOSE
40	32-9072925	HOSE, PULSE (6-3/4")
41	21-426233	CHECK VALVE, BLEED HOSE (PRESS-IN)
42	22-93890	ELBOW, REED BLOCK (WITH 1/16" BARB) - 90 DEG.
43	22-93891	TEE, REED BLOCK (WITH 1/16" BARB)

▶SWIVEL BRACKET AND STEERING ARM (52 parts)

Ref	OEM Part #	Part Name
-	27-89221A80	GASKET SET
1	1491-9225A3	SWIVEL BRACKET ASSEMBLY
2	26-87735	OIL SEAL, SWIVEL BRAKET (LOWER)
3	23-818764	BUSHING, SWIVEL BRACKET - LOWER AND UPPER
4	25-33466	"O" RING, SWIVEL BRACKET - UPPER
5	23-67668	SPACER, SWIVEL BRACKET - UPPER
6	22-8M0169589	FITTING, GREASE
7	99170A2	TILT TUBE
8	13-88750	WAVE WASHER, TILT TUBE
9	25-48462	"O" RING, TILT TUBE
10	11-859133	NUT, TILT TUBE (1"-14)
11	25-88341	GROMMET, SWIVEL BRACKET
12	26-85023	OIL SEAL, SWIVEL BRACKET
13	12-87161	WASHER, TILT LOCK LEVER
14	25-48171	"O" RING, TILT LOCK LEVER
15	85028A2	LEVER ASSEMBLY, TILT LOCK (STARBOARD)
16	23-86600	BUSHING, TILT LEVER RELEASE
17	24-85367	SPRING, TILT LEVER RELEASE
18	41052	PLUNGER, TILT LEVER RELEASE
19	16-88876	STUD, PLUNGER
20	86603	KNOB, PLUNGER
21	864751	COUPLING, TILT LOCK LEVER
22	18-87200	COTTER PIN, LEVER TO COUPLING
23	24-88049	SPRING, TENSION - COUPLING
24	18-93861	COTTER PIN, COUPLING SPRING
25	13-78854	WAVE WASHER, BOTTOM YOKE
26	86580A1	YOKE, BOTTOM
27	53-67684	RETAINING RING, BOTTOM YOLK
28	25067	BUMPER, BOTTOM YOKE SCREW
29	10-898831	SCREW, BOTTOM YOKE ATTACHING (5-7/8")
30	78249	MOUNT, BOTTOM YOKE
31	12-49339	WASHER, BOTTOM YOKE SCREW
32	11-25096	NUT, BOTTOM YOKE SCREW
33	12-67670	WASHER, THRUST - SWIVEL BRACKET
34	17-840792A1	SWIVEL PIN AND STEERING ARM ASSEMBLY
35	10-8M0176309	SCREW, STEERING ARM TO UPPER MOUNT
36	78687T	MOUNT, RUBBER - UPPER
37	12-66921	WASHER, UPPER MOUNT BOLT
38	12-78688	WASHER, UPPER MOUNT BOLT
39	11-8M0204653	NUT, UPPER MOUNT BOLT
40	67754	BUMPER, STEERING ARM
41	92876A12	STEERING LINK ASSEMBLY
42	10-849838	SCREW Comment: STEERING LINK TO STEERING ARM (1-1/4")
43	11-8M0204726	NUT, STEERING LINK SCREW
44	12-34931	WASHER, STEERING LINK SCREW
45	88238A10	GROUND WIRE ASSEMBLY
46	86485A6	TILT SWITCH ASSEMBLY
47	88342	STRAP, SWITCH AND SENDER
48	10-87926	SCREW, STRAP TO SWIVEL BRACKET
49	54-54457	CLAMP, SWITCH AND SENDER LEADS
50	10-98256	SCREW, CLAMP TO SWIVEL BRACKET
51	12-8M0204649	WASHER, CLAMP SCREW

▶TACHOMETER, TRIM GAUGE AND ALARM HORN (17 parts)

Ref	OEM Part #	Part Name
1	79-895283Q43	TACHOMETER
2	79101T	BRACKET, MOUNTING-TACHOMETER
3	10-32,11-45076	NUT, TACHOMETER TERMINAL
4	84-86323A5	WIRE, TRIM GAUGE (PURPLE-1-1/2")
5	79-895292Q41	TRIM GAUGE
6	79480	BRACKET, MOUNTING-TRIM GAUGE
7	88-72729	LIGHT BULB, TRIM GAUGE AND TACHOMETER
8	88-79888	SOCKET, TRIM GAUGE AND TACHOMETER
9	11-26419	NUT, TRIM GAUGE TERMINAL (8-32)
10	8,13-26995	LOCKWASHER, TRIM GAUGE TERMINAL
11	84-86396A8	HARNESS
12	68878A6	ALARM HORN AND WIRE ASSEMBLY
13	68878A6	HORN, ALARM
14	68879	COVER, ALARM HORN
15	23-8M0084588	SPACER, ALARM HORN
16	12-24676	WASHER, ALARM HORN
17	10-35401	SCREW, ALARM HORN

▶THROTTLE LEVER AND SHIFT SHAFT (46 parts)

Ref	OEM Part #	Part Name
1	814283A2	BRACKET, ANCHOR - CONTROL CABLES
2	10-53167T	SCREW, ANCHOR BRACKET
3	67073A1	LINK ROD ASSEMBLY
4	24-20099	SPRING, LINK ROD TO GUIDE BLOCK
5	37896	GUIDE BLOCK, LINK ROD
6	52100	WEAR PLATE, LINK ROD
7	8M0036768	LATCH, CONTROL CABLE FASTENING
8	12-69056	WASHER, LATCH
9	11-826709109	NUT, LINK ROD
10	79932A17	SHIFT SHAFT ASSEMBLY (EXTRA LONG SHAFT)
12	13-29720	WAVE WASHER, LINK ROD
13	23-26600	BUSHING, NYLON - LINK ROD
14	12-24664	WASHER, LINK ROD
15	11-826709109	NUT, LINK ROD TO SHIFT SHAFT
16	39519	CAP, BARREL RETAINER - ANCHOR BAR
17	87609	LEVER, NYLON - SHIFT CABLE LOCKING
18	17-47175	PIN, LOCATING LEVER AND COVER
19	87609A1	LINK, LOCKING LEVER TO COVER
20	90211	COVER, NYLON - SHIFT CABLE
21	95791	THROTTLE CAM (CASTING #95790)
21A	24-91821	SPRING, THROTTLE RETURN
22	23-26600	BUSHING, THROTTLE CAM
23	16-20353	STUD, THROTTLE CAM
24	11-36069	NUT, THROTTLE CAM STUD
25	8M0221994	BARREL, THROTTLE CONTROL ROD
26	95829	ROD, THROTTLE CONTROL
27	410952	LEVER, THROTTLE CONTROL
28	10-818165	SCREW, THROTTLE AND SPARK LEVER (1-3/4")
29	23-55164	BUSHING, THROTTLE LEVER
30	23-55171	BUSHING, SPARK ADVANCE LEVER
31	24-68784	SPRING, THROTTLE AND SPARK ADVANCE LEVER
32	12-68410	WASHER, SPARK ADVANCE LEVER
33	41094A3	LEVER, SPARK ADVANCE
34	10-75168	SCREW, SPARK LEVER - STOP (2-3/4")
35	11-29598	NUT, SPARK ADVANCE LEVER STOP SCREW
36	10-69560	SCREW, SPARK ADVANCE LEVER - STOP (1-1/4")
37	11-68219	NUT, SPARK ADVANCE LEVER STOP SCREW
38	48039	CAP, SPARK ADVANCE LEVER STOP SCREW
39	52023	CAP, SPARK ADVANCE LEVER STOP SCREW
40	10-69026	SCREW, CABLE LATCH TO THROTTLE LEVER
41	39483	LATCH, CABLE
42	24-20099	SPRING, CABLE LATCH TO THROTTLE LEVER
43	11-826709109	NUT, CABLE LATCH SCREW
44	10-64022	SCREW, THROTTLE LEVER _ STOP (2-1/8")
45	11-64015	NUT, THROTTLE LEVER STOP SCREW
46	52023	CAP, THROTTLE LEVER STOP SCREW

▶TRANSOM BRACKETS (35 parts)

Ref	OEM Part #	Part Name
1	1494-7476T1	BRACKET, TRANSOM (PORT)
2	10-67757	SCREW, BRACKET TO TRANSOM (4")
3	12-8M0204648	WASHER, BRACKET SCREW
4	11-35000	NUT, BRACKET SCREW
5	1495-7478T1	BRACKET, TRANSOM (STARBOARD)
6	10-87180	BOLT, TILT
7	11-82671317	NUT, TILT BOLT
8	79610A6	TRIM CYLINDER ASSEMBLY
9	23-86489	BUSHING, TRIM CYLINDER
10	12-85022	WASHER, TRANSOM BRACKET
11	24-30316	SPRING, TRIM CYLINDER
12	17-85020T	PIVOT PIN, TRIM CYLINDER
13	85024	SHAFT, TRIM CYLINDER
14	23-86637	BEARING, TRIM SHAFT
15	17-91862	PIN, TRIM CYLINDER
16	85026T	PLATE, PIVOT PIN
17	10-28636	SCREW, PLATE TO TRANSOM BRACKET
18	12-8M0204649	WASHER, PLATE SCREW
19	85035T	SPACER, TRANSOM BRACKET
20	10-70732	SCREW, SPACER TO TRANSOM BRACKET
21	12-8M0204649	WASHER, SPACER SCREW
22	89949A1	PLATE ASSEMBLY, TRANSOM BRACKET
23	10-90192	SCREW, PLATE TO TRANSOM BRACKET
24	32-89024A1	HOSE, HYDRAULIC - PORT
25	32-89023A2	HOSE, HYDRAULIC - STARBOARD
26	54-88512	CLAMP, HYDRAULIC HOSE
27	10-88829	SCREW, CLAMP TO TRANSOM BRACKET
28	13-26996	LOCKWASHER, CLAMP SCREW
29	87871T	COVER, INLET-HYDRAULIC HOSE
30	27-87775	GASKET, INLET COVER
31	10-32866	SCREW, INLET COVER
32	12-20878	WASHER, INLET COVER SCREW
33	11-8M0204718	NUT, INLET COVER SCREW
34	25-45507	GROMMET, INLET COVER
35	22-87207	CONNECTOR, HYDRAULIC HOSE

▶WIRING HARNESS, STARTER SOLENOID AND RECTIFIER (34 parts)

Ref	OEM Part #	Part Name
1	434292	PLATE, IGNITION
2	332-7778A12	SWITCH BOX
3	10-90815	SCREW, SWITCH BOX (2-1/4")
4	23-94304	SPACER, SWITCH BOX SCREW
5	23-94453	BUSHING, SWITCH BOX SCREW
6	11-45076	NUT, SWITCH BOX TERMINAL
7	84-60871A10	WIRE ASSEMBLY, GROUND
8	10-62568	NUT, SWITCH BOX TERMINAL
9	84-62310A2	CABLE Comment: SWITCH BOX TO SWITCH BOX (WHITE/BLACK)
10	10-60411	SCREW, IGNITION PLATE (1-1/4")
11	13-8M0204647	LOCKWASHER, IGNITION PLATE SCREW
12	12-36042	WASHER, IGNITION PLATE SCREW
13	12-67264	WASHER, IGNITION PLATE SCREW (RUBBER)
14	23-67268	BUSHING, IGNITION PLATE SCREW
15	84-65999A3	CABLE ASSEMBLY, BLACK
16	10-38055	SCREW, CABLE TO IGNITION PLATE (5/8")
17	8M0058226	RECTIFIER
18	10-38055	SCREW, RECTIFIER TO IGNITION PLATE (5/8")
20	11-45076	NUT, RECTIFIER TERMINALS
21	87-33386A3	MERCURY SWITCH
22	10-38055	SCREW, MERCURY SWITCH (5/8")
23	11-45076	NUT, MERCURY SWITCH TERMINAL
25	10-22028	SCREW, LEAD ATTACHING (1/2")
26	84-88439A2	BATTERY CABLE (NEGATIVE)
27	84-96220A4	HARNESS, ENGINE
28	61990	STA-STRAP, HARNESS AND CABLES
29	89-853654A1	SOLENOID, STARTER
30	10-20540	SCREW, SOLENOID TO IGNITION PLATE (5/8")
31	13-26992	LOCKWASHER, SOLENOID SCREW
32	84-65999A2	CABLE ASSEMBLY, UPPER MOUNT (BLACK)
33	10,13-26996	LOCKWASHER, SOLENOID TERMINALS
34	11-68219	NUT, SOLENOID TERMINALS (5/16")
36	13-8M0204647	LOCKWASHER, SOLENOID TERMINALS (5/16")
37	11-8M0204668	NUT, SOLENOID TERMINALS (5/16 - 18)

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury V-225 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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