Mercury 150 Pro XS (2.5L) (1B690542 & Up) Parts & Diagrams

🔎 Mercury 150 Pro XS (2.5L) Reference Library — Exploded parts diagrams (38 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 150 Pro XS (2.5L) is a 4-Stroke, Inline 4-Cylinder, SOHC, 8-valve outboard motor. Powers center-console boats, larger pontoons, and offshore-capable fishing craft.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 4-Cylinder, SOHC, 8-valve
Horsepower	150 HP
Displacement	3000 cc (3.0L / 183 CID)
Bore x Stroke	96 mm x 103 mm (3.78 in. x 4.06 in.)
Spark Plug (Type & Gap)	NGK ZFR5F
Engine Oil Capacity	5.5 L (5.8 qt)
Recommended Engine Oil	Mercury FourStroke Oil 10W-30
Gear Case Oil Capacity	980 mL (33.1 oz)
Idle Speed (in gear)	650 ± 50 RPM (in gear)
Full Throttle RPM Range	5000-6000
Fuel	Unleaded Gasoline, 87 Octane min. (90 RON, 10% Ethanol max)

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 150 Pro XS (2.5L):

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 150 Pro XS (2.5L).

▶Accessories (2 parts)

Ref	OEM Part #	Part Name
-	84-859314A1	HARNESS ASSEMBLY
0	84-8M0094239	ISOLATOR KIT, Battery

▶Air Compressor Components, SN 1B884880 and below (43 parts)

Ref	OEM Part #	Part Name
-	25-832804A03	O-RING KIT
1	8M0060053	COMPRESSOR KIT, Air Comment: Unpainted
2	NSS	NOT SOLD SEPARATE, Body
3	1100-8M0050792	END CAP ASSEMBLY
4	NSS	NOT SOLD SEPARATE, Retaining Ring
5	25-67206001	O-RING
6	25-67206001	O-RING
7	10-85593920	SCREW, (M6 x 20)
8	653-833146T06	CONNECTING ROD ASSEMBLY
9	NSS	NOT SOLD SEPARATE, Bearing
10	NSS	NOT SOLD SEPARATE, Bearing
11	NSS	NOT SOLD SEPARATE, Piston Assembly - With Rings and Pin
12	NSS	NOT SOLD SEPARATE, Oil Scraper Ring
13	NSS	NOT SOLD SEPARATE, Top Ring
14	NSS	NOT SOLD SEPARATE, Oil Ring
15	NSS	NOT SOLD SEPARATE, Wrist Pin
16	NSS	NOT SOLD SEPARATE, Piston with Wrist Pin
17	53-8348101	RING, Lock
18	835088A10	REED PLATE ASSEMBLY
19	25-67207	O-RING, (3.489 x .070)
20	25-832804	O-RING, (2.739 x .070)
21	26-828225	SEAL
22	835087A04	HEAD KIT, Compressor
23	22-8M0042974	FITTING, (1.87 Inches)
24	10-82127335	SCREW, (M8 x 35 MM)
25	13536A14	SENSOR ASSEMBLY, Temperature
26	137151	RETAINER
27	10-81893414	SCREW, (M8 x 14)
28	25-831985	O-RING, (.468 x .078)
29	22-151331	FITTING
30	21-428641	FITTING, Check Valve
31	22-856744	FITTING
32	22-14868	FITTING
33	NSS	NOT SOLD SEPARATE, Decal-Assy. Instructions
34	10-85593912	SCREW, (M6 x 12)
35	25-855349002	GROMMET
36	22-851975	FITTING, Elbow - 45 Degree - Brass (.125-27)
37	10-4010825	SCREW, (M10 x 25) Hex Flange - Stainless Steel
38	16-858762001	STUD, (.312-18/.312-24 x 4.190)
39	12-854640	WASHER, Special
40	11-46356	NUT, (.312-24)
41	8M0175171	PULLEY
42	54-8M0024533	CLAMP

▶Air Compressor Components, SN 1B884881 and up (43 parts)

Ref	OEM Part #	Part Name
-	25-832804A03	O-RING KIT
1	8M0060053	COMPRESSOR ASSEMBLY, Air Comment: Black
2	NSS	NOT SOLD SEPARATE, Body
3	1100-8M0060381	END CAP ASSEMBLY
4	10-8M0045380	SCREW, (M8 x 50)
5	25-67206001	O-RING
6	25-67206001	O-RING
7	10-85593920	SCREW, (M6 x 20)
8	653-833146T06	CONNECTING ROD ASSEMBLY
9	NSS	NOT SOLD SEPARATE, Bearing
10	NSS	NOT SOLD SEPARATE, Bearing
11	NSS	NOT SOLD SEPARATE, Piston Assembly - With Rings and Pin
12	NSS	NOT SOLD SEPARATE, Oil Scraper Ring
13	NSS	NOT SOLD SEPARATE, Top Ring
14	NSS	NOT SOLD SEPARATE, Oil Ring
15	NSS	NOT SOLD SEPARATE, Wrist Pin
16	NSS	NOT SOLD SEPARATE, Piston with Wrist Pin
17	53-8348101	RING, Lock
18	835088A10	REED PLATE ASSEMBLY
19	25-67207	O-RING, (3.489 x .070)
20	25-832804	O-RING, (2.739 x .070)
21	26-828225	SEAL
22	8M0073890	HEAD KIT, Compressor
23	22-8M0042974	FITTING, (1.87 Inches)
24	10-82127335	SCREW, (M8 x 35 MM)
25	13536A14	SENSOR ASSEMBLY, Temperature
26	137151	RETAINER
27	10-81893414	SCREW, (M8 x 14)
28	25-831985	O-RING, (.468 x .078)
29	22-151331	FITTING
30	21-428641	FITTING, Check Valve
31	22-856744	FITTING
32	22-14868	FITTING
33	NSS	NOT SOLD SEPARATE, Decal-Assy. Instructions
34	10-85593912	SCREW, (M6 x 12)
35	25-855349002	GROMMET
36	22-851975	FITTING, Elbow - 45 Degree - Brass (.125-27)
37	10-4010825	SCREW, (M10 x 25) Hex Flange - Stainless Steel
38	16-858762001	STUD, (.312-18/.312-24 x 4.190)
39	12-854640	WASHER, Special
40	11-46356	NUT, (.312-24)
41	8M0175171	PULLEY
42	54-8M0024533	CLAMP

▶Air Handler Components (23 parts)

Ref	OEM Part #	Part Name
-	8M0047660	AIR HANDLER ASSEMBLY
1	855420A1	ADAPTOR PLATE KIT
2	27-146973	GASKET
3	27-8500581	GASKET
4	8M0047661	REED BLOCK ASSEMBLY
5	10-55715	SCREW, (.250-20 x .880)
6	8M0185614	PUMP ASSEMBLY, Oil
7	23-855364	BUSHING
8	25-855362001	GROMMET
9	10-81893435	SCREW, (M8 x 35)
10	12-817274	WASHER, (.344 x 1.00 x .063) Stainless Steel
11	850248A2	PLENUM KIT, Air
12	10-81893430	SCREW, (M8 x 30)
13	8M0148668	SENSOR ASSEMBLY
14	25-896699	O-RING, (1.78 mm x .08 mm)
15	10-883942	SCREW, (M4 x 16)
16	855422A1	THROTTLE BODY KIT
17	25-855423	O-RING
18	10-82130040	SCREW, (M6 x 40)
19	10-1993716	SCREW, (M6 x 16)
20	854445	SENSOR, MAP
21	884522	BRACKET, MAP Sensor
22	892296	BRACKET

▶Air Handler/Flywheel Cover (14 parts)

Ref	OEM Part #	Part Name
1	827325A10	COVER ASSEMBLY
2	25-8M0153609	GROMMET
3	35-853333T	FILTER
4	853352	COVER
5	25-857101	GROMMET
6	19-89219001	PLUG
7	25-855613	GROMMET
8	858953	BRACKET
9	37-881865	DECAL, Caution-Start in Gear
10	8M0082988	SENSOR
11	10-40011107	SCREW, (M5 x 16) Stainless Steel
12	17-8M0042972	PIN, Special (1.75 Inches)
13	54-883080	J CLIP
14	10-817504	SCREW, (.250-20 x 1.500) Stainless Steel

▶Air Hoses (11 parts)

Ref	OEM Part #	Part Name
1	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
2	54-816311T	TIE STRAP, (8.00 Inches)
3	32-8M0108349	TUBING, (.312) (70.00 Inches Bulk), Cut to 6 Inches
4	54-8M0214964	CLAMP, Hose (15.3)
5	32-8502512	HOSE
6	23-85687631	SLEEVE, (16.00 Inches)
7	32-804823005	HOSE, Air Balance (15.00 Inches)
8	32-804824	HOSE/FITTING ASSEMBLY
9	804532	O-RING KIT
10	22-16604	FITTING, Straight (.125-27)
11	54-816311T	TIE STRAP, (8.00 Inches)

▶Bottom Cowl (34 parts)

Ref	OEM Part #	Part Name
1	100-8M0107321	BOTTOM COWL, Port
2	103-834815A1	BOTTOM COWL, Starboard
3	27-879147A11	GASKET SET, Bottom Cowl
4	875266A2	RIGGING KIT
5	859435T	INSERT, Bottom
6	859434T	INSERT, Top
7	859343	FOAM
8	10-92799	SCREW, (#10-16 x 1.12)
9	54-816311T	TIE STRAP, (8.00 Inches)
10	10-82130040	SCREW, (M6 x 40)
11	831209	RETAINER
12	19-821908	PLUG
13	12-821915	WASHER
14	8219631	CHECK VALVE
15	25-30641	O-RING, (.299 x .103)
16	22-821952	FITTING
17	54-816311T	TIE STRAP, (8.00 Inches)
18	32-8M0039077	HOSE
19	54-850896	CLAMP, (28.6)
20	22-8320763	FITTING
21	22-8M0077650	FITTING, Tell-Tale
22	889847	BOOT, Idle Exhaust
23	21-817519A1	CHECK VALVE ASSEMBLY, Drain
24	87-8M0235191	SWITCH, Trim
25	889740A02	HANDLE KIT
26	10-8M0103805	SCREW, (M6 x 16 MM) Stainless Steel
27	23-335891	BUSHING
28	25-48462	O-RING, (.614 x .070)
29	8219423	PAWL, Front Handle
30	12-69057	WASHER, (.281 x .734 x .063)
31	8M0111278	SEAL, Cowl (41.00 Inches)
32	10-8214281	SCREW, (#10-16 x .625)
33	54-822873	CLIP
34	NSS	NOT SOLD SEPARATE, Decal-Low Emission

▶Coil Plate Assembly (28 parts)

Ref	OEM Part #	Part Name
-	879346A51	HARNESS ASSEMBLY, 5 Pin
1	884271	PLATE, Coil Mounting
2	23-8502341	BUSHING
3	25-833155	GROMMET
4	10-82129110	SCREW, (M6 x 10)
5	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
6	54-899145	CLIP, Tie Strap
7	84-858414A1	CABLE ASSEMBLY, Braided
8	84-892910T03	HARNESS ASSEMBLY, Coil
9	54-816311T	TIE STRAP, (8.00 Inches)
10	54-883066	CLIP, (.865)
11	71-8M0157742	SENSOR
12	22-8M0207782	FITTING
13	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 4 Inches
14	22-875207	TEE, Fitting
15	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 5 Inches
16	881879T11	SENSOR, Pressure (0 - 100 PSI) Comment: SN# 1B934546 & Below
17	32-85944975	TUBING, (72.00 Inches Bulk), Cut to 14-1/2 Inches
18	22-8M0214971	COUPLER
19	32-85944975	TUBING, (72.00 Inches Bulk), Cut to 52 Inches
20	339-8M0077473	COIL ASSEMBLY, Ignition
21	10-82129125	SCREW, (M6 x 25 MM)
22	84-881908T	CABLE SET
23	32-828547353	CONDUIT, (.350 Inside Diameter x 3.00 Feet Bulk)
24	33-843220Q	SPARK PLUG, (NGK#IZFR6J-11)
25	10-60411	SCREW, (.312-18 x 1.250)
26	12-8M0042642	WASHER, (.323 x .563 x .063) Stainless Steel
27	12-49436	WASHER

▶Crankshaft, Pistons and Connecting Rods (19 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	455-850690T2	CRANKSHAFT ASSEMBLY
2	78662	WEAR SLEEVE
3	30-67923T	BEARING, Ball, Lower
4	53-67446	RING
5	54196A6	CARRIER ASSEMBLY
6	65800	PACKING
7	39-67377T	RING, Sealing
8	31-16756A6	BEARING KIT
9	NSS	NOT SOLD SEPARATE, Race
10	700-859562A5	PISTON ASSEMBLY Comment: Port - .015 Oversize
11	39-878106A12	RING SET, Piston Comment: .015 Oversize
12	NSS	NOT SOLD SEPARATE, Piston Ring-Lower
13	53-8320811	LOCK RING
14	600-877853A04	CONNECTING ROD ASSEMBLY
15	10-763491	SCREW, (.312-24 x .875)
16	12-8M0012299	THRUST WASHER
17	8M0234886	BEARING KIT
18	29-8M0204691	BEARING, Needle

▶Cylinder Block and End Caps (41 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	884-858961A8	CYLINDER BLOCK ASSEMBLY
2	16-8M0034455	STUD, (1.750 Inches)
3	16-8M0034454	STUD, (.375-16/.375-24 x 6.870)
4	17-43044	PIN, Dowel - Without Hole (.375 x .625)
5	17-8M0036405	PIN, BEARING RACE
6	8M0111325	BRACKET
7	10-828213	SCREW, (.312-18 x 1.500) Hex Flange
8	76867	COVER, Bottom
9	10-828214	SCREW, (.312-18 x 2.00) Hex Flange
10	10-66717	SCREW, (.375-16 x 3.250)
11	10-74824	SCREW, (.312-18 x 1.250)
12	26852	CAP, Nylon
13	10-856832	SCREW, (.250-20 x 1.750)
14	11-64015	NUT, (.250-20)
15	1159-832760T1	END CAP ASSEMBLY
16	25-54029	O-RING, (2.800 x .103)
17	31-16756A4	BEARING KIT
18	NSS	NOT SOLD SEPARATE, Bearing Race
19	26-41953	SEAL
20	10-881190	SCREW, (.312-18 x 1.00)
21	1156-7809T1	END CAP ASSEMBLY
22	25-62700	O-RING, (3.237 x .103)
23	26-41953	SEAL
24	10-28636	SCREW, (.250-20 x .750)
25	13-26992	LOCKWASHER, (.250) Stainless Steel
26	8538821	BRACKET, Throttle Position Indicator Mount
27	8519371	LEVER, Throttle Position Indicator
28	10-82130025	SCREW, (M6 x 25), Bracket to Crankcase
29	23-856954	BUSHING
30	12-65567	WASHER, (.265 x .750 x .048) Stainless Steel
31	25-8M0190980	GROMMET
32	8M6005165	INDICATOR, Throttle Position, Inside
33	8582261	COVER, TPS
34	10-8508281	SCREW, (#10-32 x 2.00), TPS to Bracket
35	8M0084738	LINK ASSEMBLY
36	84-88439A46	CABLE ASSEMBLY, Battery - Positive
37	10-81893414	SCREW, (M8 x 14)
38	84-93388A1	CABLE ASSEMBLY, (6.00 Inches) Black
39	10-69035	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel
40	54-859172	CLAMP, Use where Applicable

▶Cylinder Head (12 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	878110T1	CYLINDER HEAD ASSEMBLY Comment: Starboard
2	10-8M0125882	SCREW, (.375-16 x 2.750)
3	17-63779	PIN, Dowel (.250 x .625)
4	27-8M0204714	GASKET
5	8M0039353	COVER
6	833072003	THERMOSTAT, 62Â°C (143Â°F)
7	10-82130025	SCREW, (M6 x 25)
8	8M0148668	SENSOR ASSEMBLY
9	25-896699	O-RING, (1.78 mm x .08 mm)
10	25-8M0149612	SEAL
11	8597721	SEAL

▶Deck Oil Fill Kit, 15969A3 or 15969A5 (9 parts)

Ref	OEM Part #	Part Name
1	15969A3	DECK FILL KIT, Oil, With Hose
2	15969A13	DECK FILL KIT, Oil, With Out Hose
3	15966	PLATE
4	15969A08	DECK PLATE ASSEMBLY
5	10-16324	SCREW, (#8 x .625)
6	54-815504228	CLAMP, Worm Gear
7	15967	ADAPTOR, Oil Filler
8	25-11332	O-RING, (2.225 x .210)
9	32-850719	HOSE, (100.00 Feet Bulk) , Oil Filler - Cut as Required

▶Driveshaft Housing and Exhaust Tube (37 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	3503-813563T1	HOUSING, Driveshaft - Black - X-Long
2	16-56295	STUD, (.437 x 2.69)
3	10-898831	SCREW, (.500-20 x 6.220)
4	88238A10	CABLE ASSEMBLY, Ground
5	77327	MOUNT, Lower
6	12-49339	WASHER, (.8125)
7	11-898832	NUT, (.500-20)
8	10-41508	SCREW, (.250-20 x .500) Stainless Steel
9	12-45176	WASHER, (.453 x .812 x .105) Stainless Steel
10	11-8M0204653	NUT, (.437-20) Stainless Steel
11	54-8M0036782	CLAMP
12	10-66727	SCREW, (.312-18 x 1.250)
13	100-8M4500752	COVER
14	10-88417	SCREW, (#12-24 x .620)
15	11-35521	NUT
16	12-48926	WASHER
17	11-8M0204653	NUT, (.437-20) Stainless Steel
18	12-20553	WASHER, (.406 x .734 x .063)
19	11-69254	NUT
20	8M0039081	BOOT, Idle Exhaust
21	19-64649	PLUG
22	27-991734	GASKET
23	66350001	SEAL, Lower
24	18276T	TUBE, Exhaust
25	8M0039076	SEAL, Upper
26	8M0047679	EXTENSION ASSEMBLY, Exhaust
27	10-8M0047146	SCREW, (0.25-20 x 1.50)
28	12-35044	WASHER, (.281 x .625 x .065) Stainless Steel
29	32-8M0042790	TUBE, Water Comment: X-Long
30	18233A20	PLATE ASSEMBLY, Driveshaft Housing
31	8M0043165	SEAL
32	68011	BRACKET
33	10-878608	SCREW, (#10-16 x .500)
34	17-43044	PIN, Dowel - Without Hole (.375 x .625)
35	26-38970	SEAL
36	27-183076	GASKET

▶Dual Engine Tie Bar Kit (21 parts)

Ref	OEM Part #	Part Name
-	92876A9	EXTENSION KIT, Dual Engine
1	71565A2	TUBE ASSEMBLY
2	25-48462	O-RING, (.614 x .070)
3	41055	MOUNT
4	14-42100	TAB WASHER
5	11-8M0041651	NUT, (.875-14)
6	88404	TAB WASHER
7	10-38601	SCREW, (.250-28 x 1.250)
8	17729A1	BRACKET
9	10-62055	SCREW, (.312-24 x 1.250)
10	17728	TAB WASHER
11	10-140001	SCREW, (.375-24 x 1.38)
12	11-8M0204726	NUT, (.375-24) Stainless Steel
13	8M0026167	STEERING EYE
14	23-23651	SLEEVE, (1.625)
15	97931	TUBING, (4.00 Inches)
16	8M0026098	COUPLER, 15 In.
17	11-42099	NUT, (.562-18)
18	22-821169	COUPLING
19	12-37828	WASHER, (.390 x .625 x .062) Stainless Steel
20	10-94319	SCREW, (.375-24 x 1.5)

▶Electrical Plate Assembly (29 parts)

Ref	OEM Part #	Part Name
-	879346A41	HARNESS ASSEMBLY, Throttle Position Sensor
1	899071T01	PLATE
2	54-899145	CLIP, Tie Strap
3	10-82129114	SCREW, (M6 x 14)
4	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
5	8M0207773	RELAY ASSEMBLY
6	828102	BRACKET
7	25-818967	GROMMET
8	23-8M0214955	BUSHING
9	10-82129125	SCREW, (M6 x 25 MM)
10	84-892926T03	HARNESS ASSEMBLY, Engine
11	85-875302A1	HOT STUD ASSEMBLY
12	11-400213	NUT, (M8) Stainless Steel
13	12-85172	WASHER
14	84-93388T21	CABLE ASSEMBLY, Black
15	84-8M0006811	CABLE ASSEMBLY, Starter
16	84-878231A03	HARNESS ASSEMBLY, Fuse - 100 Ampere
17	13-53166	LOCKWASHER, (.312)
18	11-400213	NUT, (M8) Stainless Steel
19	84-88439A46	CABLE ASSEMBLY, Battery - Positive
20	89-817109A2	SOLENOID ASSEMBLY, (#10-32 / .3125-18 Terminals)
21	25-822179	GROMMET
22	23-8M0214955	BUSHING
23	84-88807A16	CABLE ASSEMBLY, (4.00 Inches) Black
24	10-32,11-45076	NUT, Brass
25	10-32,11-813938	CAP NUT,
26	11-8M0204668	NUT, (.312-18)
27	84-819514T26	HARNESS ASSEMBLY, Trim
28	54-816311T	TIE STRAP, (8.00 Inches)

▶Exhaust Manifold and Exhaust Plate (38 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	27-190506	GASKET
2	828343A05	PLATE ASSEMBLY, Exhaust Divider
3	26-814754	SEAL, (12.50 Inches)
4	10-8263561	SCREW AND WASHER, (.312-18 x 1.500)
5	10-881190	SCREW, (.312-18 x 1.00)
6	8M0039767	COVER, Relief Valve
7	10-31984	SCREW, (.312-18 x 1.375)
8	10-69570	SCREW, (#10-16 x .750)
9	12-76451	WASHER
10	144791	DIAPHRAGM
11	16496	DEFLECTOR, Water
12	16497A1	PLATE
13	27-78690002	GASKET
14	24-42996	SPRING, (Stainless Steel)
15	14480	POPPET
16	25-64872	GROMMET
17	65848	CARRIER
18	27-991764	GASKET
19	850814T4	PLATE, Exhaust
20	17-43044	PIN, Dowel - Without Hole (.375 x .625)
21	8M0043164	SEAL
22	680101	BRACKET
23	10-878608	SCREW, (#10-16 x .500)
24	25-19565002	GROMMET
25	12-20553	WASHER, (.406 x .734 x .063)
26	11-69254	NUT
27	23-27132	BUSHING
28	10-66727	SCREW, (.312-18 x 1.250)
29	10-68783	SCREW, (.312-18 x 2.50)
30	10-898833	SCREW, (.375-16 x 3.500)
31	812905T	BRACKET, Front
32	10-8055571	SCREW, (.3125-18 x .50)
33	12-187031	WASHER
34	25-18778001	GROMMET
35	18578T09	BRACKET ASSEMBLY, Rear
36	25-12602002	GROMMET
37	19-8M0033787	PLUG Comment: Jet

▶Flywheel/Alternator (29 parts)

Ref	OEM Part #	Part Name
1	8M0064021	ALTERNATOR KIT
2	10-8M0012503	SCREW, (M10 x 100) Hex Flange - Stainless Steel
3	10-40108120	SCREW, (M10 x 120) Hex Flange - Stainless Steel
4	12-8M0042641	WASHER, (.390 x 1.00 x .06)
5	23-856975	MOUNT
6	858391T01	BRACKET
7	12-845998	WASHER, (.406 x 1.250 x .089)
8	858393T01	BRACKET
9	11-826292	NUT, (M10) Brass/Nickel Plated
10	10-82446155	SCREW, (M10 x 55)
11	84-856583T2	CABLE ASSEMBLY
12	17-8M0042972	PIN, Special (1.75 Inches)
13	857142T	BRACKET
14	10-812618	SCREW, (.312-18 x 1.00) Stainless Steel With Nylon Patch
15	24-855798001	SPRING
16	856815T2	ARM TENSIONER ASSEMBLY
17	16-8M0034457	STUD, (M10 x 85)
18	11-826292	NUT, (M10) Brass/Nickel Plated
19	23-8568941	BUSHING
20	12-4002320	WASHER
21	8M6005030	PULLEY ASSEMBLY
22	10-4010835	SCREW, (M10 x 35) Hex Flange - Stainless Steel
23	57-828507Q4	BELT
24	281-859734T1	FLYWHEEL
25	11-52901	NUT, (.625-18)
26	12-33001	WASHER, (.641 x 1.250 x .190)
27	19-45907	PLUG, Yellow
28	11-401386	NUT, (M6) Stainless Steel
29	12-4002319	WASHER

▶Fuel Hoses (14 parts)

Ref	OEM Part #	Part Name
1	54-816311T	TIE STRAP, (8.00 Inches)
2	54-8M0214964	CLAMP, Hose (15.3)
3	22-858955	CONNECTOR
4	32-8M0108355	HOSE, (57.00 Inches Bulk), Cut to 7-1/2 Inches
5	32-8M0064784	HOSE, To Fuel Pump
6	32-8M0062344	HOSE ASSEMBLY, (25.50 Inches)
7	32-804822	HOSE, Fuel Return
8	32-804821005	HOSE, Fuel Balance (16.00 Inches)
9	25-804840	O-RING KIT
10	32-8M0064634	HOSE
11	32-8M0064635	HOSE
12	23-85686953	SLEEVE, (27.00 Inches Bulk)
13	54-8M0214911	CLAMP, (15.7)
14	21-8557611	CHECK VALVE

▶Fuel Pump (23 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	NSS	NOT SOLD SEPARATE, Body-Fuel Pump
2	21-857005A1	DIAPHRAGM KIT
3	NSS	NOT SOLD SEPARATE, Diaphragm
4	NSS	NOT SOLD SEPARATE, Retainer
5	NSS	NOT SOLD SEPARATE, Spring
6	NSS	NOT SOLD SEPARATE, Cap
7	NSS	NOT SOLD SEPARATE, Spring
8	NSS	NOT SOLD SEPARATE, Cap
9	NSS	NOT SOLD SEPARATE, Diaphragm
10	NSS	NOT SOLD SEPARATE, Gasket-Boost
11	NSS	NOT SOLD SEPARATE, Gasket-Pulse
12	27-8M0204705	GASKET
13	987752	PLATE
14	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
15	10-82104540	SCREW, (M5 x 40)
16	10-82130050	SCREW, (M6 x 50), Pump to Crankcase
17	144303	BASE
18	22-291112	FITTING
19	22-782792	FITTING, Elbow 45 Degree (1.25)
20	54-816311T	TIE STRAP, (8.00 Inches)
21	32-8M0043979	HOSE AND SLEEVE ASSEMBLY, (18.00 Inches)
22	22-822769	CONNECTOR

▶Fuel Rails (33 parts)

Ref	OEM Part #	Part Name
-	8M0185153	FUEL RAIL ASSEMBLY, Complete
1	NSS	NOT SOLD SEPARATE, Fuel Rail (Port)
2	NSS	NOT SOLD SEPARATE, Fuel Rail (Starboard)
3	54-804830	CLAMP
4	10-804525001	SCREW PACKAGE, (2 Per)(M5 x 10)
5	8M0047053	VALVE ASSEMBLY, (.375 Inch Diameter)
6	25-804840	O-RING KIT
7	22-805515	CAP, Shrader Valve - Brass
8	19-804835	PLUG (Port)
9	8M0041097	CLAMP
10	54-8048311	CLAMP
11	8M0222157	INJECTOR
12	25-804530	O-RING KIT
13	25-804529	O-RING KIT
14	804522	CLAMP
15	54-880808	CLAMP
16	880807T04	REGULATOR, Air
17	25-880809	O-RING KIT
18	54-804832	CLAMP
19	804526	SCREW PACKAGE, (M5 x 16) (2 Per)
20	804535001	COVER
21	24-804534	SPRING
22	804533	DIAPHRAGM ASSEMBLY
23	25-804536	O-RING
24	19-804834	PLUG (Starboard)
25	22-804836	FITTING
26	804532	O-RING KIT
27	8M6001744	INJECTOR ASSEMBLY, Air
28	26-804875	SEAL KIT, Direct Injector
29	16-8M0063255	STUD, (M10 x 91)
30	11-826292	NUT, (M10) Brass/Nickel Plated
31	12-859404002	WASHER, Injection
32	54-899145	CLIP, Tie Strap

▶Gasket Set Components-Complete-Powerhead and Lower Unit (1 parts)

Ref	OEM Part #	Part Name
-	27-782461	GASKET, Exhaust Diffuser Comment: Not used for this application

▶Gear Housing, Driveshaft (49 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
0	1647-9148T85	GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: Standard - X-Long - 1.87:1
1	1647-9148T93	GEAR HOUSING ASSEMBLY, Basic
2	17-43044	PIN, Dowel - Without Hole (.375 x .625)
3	16-8M0034464	STUD, (.438 x 3.82 Inches) Comment: X-Long
4	16-8M0133358	STUD, (.437-14/.437-20 x 2.060)
5	16-8M0034463	STUD, (.312-18/.324-24 x 3.380)
6	16-306671	STUD, (.250-20/.250-28 x 3.125)
7	8M0039169	FILLER BLOCK
8	31-42647A1	BEARING ASSEMBLY, Roller
9	97-826134Q	ANODE
10	10-4000333	SCREW, (M6 x 40)
11	11-401386	NUT, (M6) Stainless Steel
12	22-881866	FITTING
13	23-29804T	SLEEVE
14	NSS	NOT SOLD SEPARATE, Pinion Gear Comment: 1.87:1- 15 Teeth
15	12-92721	WASHER
16	11-35921	NUT, (.625-18)
17	15-42637A1	SHIM SET
18	10-79953Q04	SCREW KIT, Drain
19	26-8M0204693	SEAL
20	789022	SHIFT SHAFT
21	25-25439	O-RING, (.862 x .103)
22	23-77631A2	BUSHING ASSEMBLY
23	26-8M0204708	SEAL, Oil
24	12-77674	WASHER
25	45-897625T	DRIVESHAFT, X-Long
26	31-8M0146566	BEARING ASSEMBLY, Roller/Cup
27	NSS	NOT SOLD SEPARATE, Cup
28	8245191	RETAINER
29	46-8M0077147	BASE ASSEMBLY, Water Pump
30	NSS	NOT SOLD SEPARATE, Retainer
31	27-8M0204678	GASKET
32	25-8M0142854	O-RING, (2.175 x .175)
33	26-89238	SEAL, Oil
34	26-16977	SEAL, Oil
35	27-8M0090319	GASKET, Lower
36	27-858524	GASKET
37	8M0204677	FACE PLATE
38	46-96148T1	BODY ASSEMBLY, Water Pump
39	48752T	INSERT
40	26-38970	SEAL
41	47-89984T3	IMPELLER
42	28-8M0214992	KEY
43	10-8M0215009	SCREW, (#14-8 x 2.25)
44	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
45	11-8267119	NUT, (.250-28)
46	12-36001	WASHER
47	11-13436	NUT

▶Gear Housing, Propeller Shaft (33 parts)

Ref	OEM Part #	Part Name
-	27-8M0046714	GASKET SET, Engine
1	1647-9148T93	GEAR HOUSING ASSEMBLY, Basic
2	89594A1	FOLLOWER ASSEMBLY
3	789562	SHIFT CAM
4	828287	ROD
5	43-803615T2	GEAR ASSEMBLY, Pinion/Forward Comment: 1.87:1 Gear Ratio
6	15-44491A1	SHIM SET
7	31-30894A1	BEARING SET, Cup And Cone
8	NSS	NOT SOLD SEPARATE, Cup
9	31-30895T	BEARING, Needle
10	53-856823	RING, Retaining
11	52-859340T	CLUTCH
12	17-8M0100263	PIN, Cross
13	17-828356	PIN, Detent
14	24-30893	SPRING
15	44-94148	PROPELLER SHAFT
16	43-828175A1	GEAR ASSEMBLY, Reverse - 15/28 Comment: 1.87:1 Gear Ratio
17	23-824108	SPACER
18	681001	RING, Thrust
19	30-88957T	BEARING, Ball
20	25-8M0214920	O-RING
21	43567T1	CARRIER ASSEMBLY, Bearing
22	31-30956T	BEARING, Needle
23	26-14077	SEAL, Oil, Inside
24	26-8M0204670	SEAL, Outside
25	28-30281	KEY
26	14-79447	TAB WASHER
27	8M2011027	RETAINER
28	97-76214A6	ANODE KIT Comment: Magneseum
29	10-8M0204686	SCREW, (.437-14 x 1.750)
30	10-65210	SCREW, (.375-16 x 1.00)
31	12-45176	WASHER, (.453 x .812 x .105) Stainless Steel
32	11-8M0204653	NUT, (.437-20) Stainless Steel

▶Mercathode Kit (15 parts)

Ref	OEM Part #	Part Name
1	88334A2	MERCATHODE KIT
2	88334A4	MERCATHODE ASSEMBLY
3	10-22793	SCREW, (#9-14 x .875)
4	12-30164	WASHER, (.192 x .375 x .0312) Stainless Steel
5	10-32,11-45076	NUT, Brass
6	72958A5	ELECTRODE ASSEMBLY
7	25-8M0204645	O-RING, (.796 x .139)
8	10-87698	SCREW, (#10-16 x 1.250) Stainless Steel
9	97-72957A5	ANODE ASSEMBLY
10	25-8M0204645	O-RING, (.796 x .139)
11	10-87698	SCREW, (#10-16 x 1.250) Stainless Steel
12	88-8M0207796	FUSE, 20 Ampere
13	84-95084A10	CABLE ASSEMBLY, (5.00 Inches) Red
14	84-95084A13	CABLE ASSEMBLY, (64.00 Inches)
15	84-79138A8	CABLE ASSEMBLY, (72.00 Inches) Black

▶Oil Injection Components (30 parts)

Ref	OEM Part #	Part Name
1	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 24 Inches
2	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 18-1/2 Inches
3	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 16-1/2 Inches
4	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 24-1/2 Inches
5	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 27 Inches
6	21-858805	CHECK VALVE
7	8M0214940	TIE STRAP, (5.50 Inches)
8	56762	TIE STRAP, (4.00 Inches)
9	32-892830053	HOSE, (24.00 Inches Braided)
10	32-8M0054213	HOSE, (40.00 Inches Bulk), Cut to 32 Inches
11	21-8781051	CHECK VALVE, To Block
12	22-8M0207780	FITTING
13	32-8M0108355	HOSE, (57.00 Inches Bulk), Cut to 6 Inches
14	NSS	NOT SOLD SEPARATE, Cap
15	32-875289	HOSE
16	22-858955	CONNECTOR
17	35-875284T01	FILTER, Oil - In Line
18	32-875283	HOSE, (2.00 Inches)
19	1200-8M0063190	RESERVOIR ASSEMBLY
20	NSS	NOT SOLD SEPARATE, Decal-Reservoir
21	25-855362001	GROMMET
22	12-49436	WASHER
23	10-60411	SCREW, (.312-18 x 1.250)
24	23-855364	BUSHING
25	87-856156T02	SWITCH ASSEMBLY
26	10-58376	SCREW, (.164-18 x .375)
27	12-72761	WASHER, (.203 x .562 x .060) Stainless Steel
28	54-814634	CLAMP
29	32-8M0108355	HOSE, (57.00 Inches Bulk), Cut to 4-3/4 Inches
30	22-858955	CONNECTOR

▶Oil Lines (14 parts)

Ref	OEM Part #	Part Name
1	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 30 Inches
2	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 25 Inches
3	22-887801	FITTING, Elbow 90 Degree (.0625-27)
4	21-8592352	CHECK VALVE, 90 Degree (.0625-27)
5	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 16-1/2 Inches
6	22-151333	FITTING
7	8M0214940	TIE STRAP, (5.50 Inches)
8	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 22 Inches
9	22-59169003	FITTING, Tee
10	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 1-1/2 Inches
11	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 4 -3/4 Inches
12	32-8M0054152	TUBING, (38.00 Inches Bulk), Cut to 3-1/2 Inches
13	21-426233	CHECK VALVE
14	21-426982	CHECK VALVE

▶PCM Mounting (11 parts)

Ref	OEM Part #	Part Name
1	8M0073375	PCM, Propulsion Control Module (150 ProXS) Comment: SN# 1B934546 & Up
2	10-82130025	SCREW, (M6 x 25)
3	12-65567	WASHER, (.265 x .750 x .048) Stainless Steel
4	25-8M0190980	GROMMET
5	23-856954	BUSHING
6	54-891520001	CLIP
7	10-82129114	SCREW, (M6 x 14)
8	10-82130012	SCREW, (M6 x 12)
9	830796A04	CONNECTOR ASSEMBLY, Weather Cap - Male
10	877613A02	CONNECTOR ASSEMBLY, Weather Cap 6 Pin
11	830796A03	CONNECTOR ASSEMBLY, Weather Cap - 2 Pin Male Comment: Jet

▶Power Trim Components (38 parts)

Ref	OEM Part #	Part Name
-	855998A11	POWER TRIM ASSEMBLY, Complete
1	878265A4	TRIM MOTOR
2	NSS	NOT SOLD SEPARATE, Armature
3	NSS	NOT SOLD SEPARATE, End Frame
4	10-82494830	SCREW, (M6 x 30)
5	13-400256	LOCKWASHER, (M6)
6	8782451	DRIVESHAFT
7	878410A1	PO CHECK KIT
8	893929A01	MANUAL RELEASE ASSEMBLY, Includes Reference #26
9	8M0142997	SHAFT KIT
10	17-878267	PIN
11	878235A03	TILT CYLINDER ASSEMBLY
12	878239A02	GUIDE KIT, Includes Reference #26
13	8M0142999	O-RING KIT, Includes Reference #26
14	8M0168219	SHOCK ROD KIT, Includes Reference #26
15	8M0143000	PISTON ASSEMBLY, Memory
16	878406A02	REPAIR KIT, Check Valve, Includes Reference #26
17	878414T01	PISTON ASSEMBLY
18	878413A1	PISTON ASSEMBLY
19	1100-8M0021648	GUIDE ASSEMBLY
20	878264A1	RESERVOIR KIT
21	19-811613	PLUG ASSEMBLY
22	10-4000327	SCREW, (M6 x 14)
23	12-4002315	WASHER
24	892251A01	PUMP KIT
25	878408A1	REPAIR KIT, Power Trim
26	17-821539	PIN, Trilobe
27	10-858771	SCREW, (M10 x 30)
28	12-4002319	WASHER
29	97-818298Q1	ANODE KIT
30	10-8M0204707	SCREW, (M6 x 25)
31	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
32	99625002	SHAFT
33	8M0084613	C WASHER
34	54-26550	CLAMP
35	10-878609	SCREW, (#10-16 x .600)
36	32-828547353	CONDUIT, (.350 Inside Diameter x 3.00 Feet Bulk), Cut to 12 Inches
37	54-816311T	TIE STRAP, (8.00 Inches)

▶Service/Support Material (1 parts)

Ref	OEM Part #	Part Name
-	61-8M0060220	POWERHEAD ASSEMBLY Comment: 150 Pro XS

▶Starter Motor (14 parts)

Ref	OEM Part #	Part Name
1	50-892339T01	STARTER MOTOR ASSEMBLY
2	NSS	NOT SOLD SEPARATE, Thru Bolt
3	43-880805A1	GEAR KIT
4	809463A1	SOLENOID KIT
5	8M0065258	BRUSH SET
6	10-69035	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel
7	84-93388A1	CABLE ASSEMBLY, (6.00 Inches) Black
8	37-8272822	DECAL, Warning
9	13-400255	LOCKWASHER, (M5)
10	11-400211	NUT, (M5) Stainless Steel
11	13-8M0204647	LOCKWASHER, (.312)
12	11-400213	NUT, (M8) Stainless Steel
13	23-8M0034918	COLLAR
14	8M0043276	STOP

▶Swivel Bracket and Steering Arm (31 parts)

Ref	OEM Part #	Part Name
1	1499-8M0102865	SWIVEL BRACKET ASSEMBLY, Black
2	25-8M0214926	O-RING
3	23-818764	BUSHING
4	23-816039	SPACER
5	26-87735	SEAL, Oil, Lower
6	22-8M0169589	FITTING, Grease
7	23-821207	BUSHING
8	12-816432	THRUST WASHER
9	878182T01	YOKE, Bottom
10	53-67684	RING, Retaining
11	8M0045383	STRIKER PLATE
12	13-58643	LOCKWASHER, (.375)
13	11-46335	NUT, (.375-24)
14	10-64014	SCREW, (.250-28 x .500)
15	NSS	NOT SOLD SEPARATE, Decal-Serial Overlaminate
16	8M0074846	SENDER ASSEMBLY, Trim, Analog
17	10-852368	SCREW, (#10-24 x .750)
18	10,13-26996	LOCKWASHER, Stainless Steel
19	12-89302	WASHER, (.203 x .406 x .040)
20	17-8M0132731	SWIVEL PIN ASSEMBLY, Steering Arm - Stainless Steel
21	10-8M0176309	SCREW, (.437-20 x 7.500)
22	8M0000516	BUMPER, Top Yoke
23	77326	MOUNT
24	12-66921	WASHER
25	12-78688	WASHER
26	11-8M0204653	NUT, (.437-20) Stainless Steel
27	92876A12	LINK ROD ASSEMBLY
28	10-849838	SCREW, (.375-24 x 1.250)
29	11-8M0204726	NUT, (.375-24) Brass
30	12-37828	WASHER, (.390 x .625 x .062) Stainless Steel
31	54-816311T	TIE STRAP, (8.00 Inches)

▶Throttle Lever and Shift Shaft (46 parts)

Ref	OEM Part #	Part Name
1	8M0040990	LEVER, Throttle Control
2	10-818165	SCREW, (.375-16 x 1.75)
3	23-55164	BUSHING
4	23-858959	SPACER
5	10-64022	SCREW, (.250-20 x 2.125)
6	11-64015	NUT, (.250-20)
7	26852	CAP, Nylon
8	42927	INSERT
9	12-35459	WASHER
10	11-401386	NUT, (M6) Stainless Steel
11	814283T6	BRACKET ASSEMBLY, Anchor
12	98889	LATCH
13	10-42975	DRIVE SCREW
14	39519	CUP
15	52100	WEAR PLATE
16	8M0036768	LATCH
17	12-35462	WASHER, (.2656 x .625 x .0625) Stainless Steel
18	11-826709109	NUT, (.250-28) Stainless Steel
19	10-28782	SCREW, (.312-18 x .880) Stainless Steel
20	814284	GUIDE BLOCK
21	24-20099	SPRING
22	67073A1	LINK ROD ASSEMBLY
23	79932A17	SHIFT SHAFT ASSEMBLY Comment: X-LONG
24	NSS	NOT SOLD SEPARATE, Roll Pin
25	NSS	NOT SOLD SEPARATE, Shift Shaft Lever-Upper
26	23-26856	BUSHING
27	13-29720	WAVE WASHER
28	12-35462	WASHER, (.2656 x .625 x .0625) Stainless Steel
29	11-826709109	NUT, (.250-28) Stainless Steel
30	87-8M0207794	SWITCH
31	10-77478	SCREW, (#6-32 x .875)
32	12-27882	WASHER
33	23-8M0215006	BUSHING
34	8508152	ROD
35	8562211	CAM
36	23-856895	BUSHING
37	30-856896	BEARING
38	10-81893440	SCREW, (M8 x 40)
39	850286A03	LEVER/ROLLER KIT, Throttle
40	8M0072162	ROLLER
41	12-8M0204666	WASHER, (.203 x .500 x .032)
42	8-32,11-826709104	NUT, Stainless Steel
43	10-889354	SCREW, Special
44	12-881992	WASHER, Spool
45	10,13-69432	LOCKWASHER, External
46	12-881991	WASHER, Cupped

▶Tools (1 parts)

Ref	OEM Part #	Part Name
-	90-8M0047641	PARTS MANUAL, 150 Pro XS (2.5L)

▶Top Cowl (25 parts)

Ref	OEM Part #	Part Name
-	37-8M0065744	DECAL, Horsepower (150) Comment: SN# 1B934546 & Up
1	100-8M0075375	TOP COWL ASSEMBLY, Mariner, Without decals
2	10-82130020	SCREW, (M6 x 20)
3	883019A02	SOUND BLANKET KIT
4	NSS	NOT SOLD SEPARATE, Sound Blanket-Port
5	NSS	NOT SOLD SEPARATE, Sound Blanket-Starboard
6	NSS	NOT SOLD SEPARATE, Sound Blanket-Rear
7	831207A16	HANDLE KIT, Cowl Latch
8	23-812707	BUSHING
9	23-8312141	SPACER
10	12-8M0042643	WASHER, (.520 x .850 x .060) Nylon - Black
11	13-12134	WASHER, Wave
12	8M0001081	CAM
13	12-8M0214930	WASHER
14	10-8M0174577	SCREW, (M6 x 16), Included with Handle Kit
15	8M0036792	BRACKET, Front
16	815477	BUMPER, Latch
17	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
18	11-401366	NUT, (M6) Stainless Steel
19	53-8237951	RING, Retaining
20	8M0207770	ROLLER
21	8155381	PIN, Roll
22	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
23	NSS	NOT SOLD SEPARATE, Decal-Counter Rotation
24	NSS	NOT SOLD SEPARATE, Decal-Break-In

▶Transom Brackets (21 parts)

Ref	OEM Part #	Part Name
-	3425-828333A09	TRANSOM BRACKET KIT
1	NSS	NOT SOLD SEPARATE, Transom Bracket-Starboard
2	NSS	NOT SOLD SEPARATE, Transom Bracket-Port
3	22-8M0169588	FITTING, Grease, Port
4	826125A1	TILT TUBE
5	11-826135	NUT, (1.00-14) Nylon Insert
6	25-45711	O-RING, (.612 x .103)
7	13-88750	WASHER
8	11-826164	NUT, (.875-14)
9	10-8M0204730	SCREW, (.500-20 x 5 Inches)
10	12-8M0204665	WASHER, (.530 x .870 x .105) Stainless Steel
11	12-8M0204648	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel
12	11-82671117	NUT, (.500-20)
13	8M0115104	LEVER ASSEMBLY, Tilt Lock
14	24-830899	SPRING, Tension
15	23-65830	NYLINER
16	24-830900	SPRING, Compression
17	99633	KNOB
18	17-99615	PIN, Groove
19	17-893709	PIN
20	37-8M0043059	DECAL, Warning

▶Vapor Separator Components (40 parts)

Ref	OEM Part #	Part Name
-	859174T06	VAPOR SEPARATOR ASSEMBLY, Complete
1	8M6004919	COVER KIT
2	22-8554246	FITTING
3	22-881740	FITTING, Straight
4	19-883208	PLUG
5	27-883252	GASKET
6	26-803878	SEAL, Pump
7	1395-808612	SCREW AND WASHER, (#8-32 x .750)
8	22-885186A1	FITTING KIT
9	25-831985	O-RING, (.468 x .078)
10	84-881831	WIRE ASSEMBLY
11	855427A1	PUMP KIT
12	8M6000589	SLEEVE
13	8M6004920	FLOAT KIT
14	F10064	SHAFT
15	8M6004917	VALVE, Needle
16	10-883223	SCREW, (M6 x 16)
17	8M6004918	SEAT/VALVE
18	889318002	BAFFLE, Fuel
19	10-883223	SCREW, (M6 x 16)
20	35-18458T4	FILTER KIT
21	8M0204710	PROBE
22	855434T04	BOWL KIT
23	22-880862A1	FITTING KIT
24	25-880863	O-RING
25	19-855435A1	PLUG KIT
26	25-8M0062785	O-RING
27	26-8554331	SEAL, Pump
28	22-8554245	ELBOW
29	8M0047624	PUMP ASSEMBLY
30	22-855802A1	ELBOW
31	25-883551	O-RING
32	855756A1	BRACKET KIT
33	10-1993716	SCREW, (M6 x 16)
34	54-850181	TIE STRAP, (11.750 Inches)
35	54-816311T	TIE STRAP, (8.00 Inches)
36	25-856928	GROMMET
37	22-880862A1	FITTING KIT
38	25-880863	O-RING
39	10-82130010	SCREW, (M6 x 10)

▶Visual Warning Kit, 17334A2 (7 parts)

Ref	OEM Part #	Part Name
NS	10-32,11-27164	NUT AND LOCKWASHER,
1	17334A2	VISUAL WARNING SYSTEM
2	88-17429	LAMP
3	76424	BRACKET, Switch Mounting
4	16-55422	STUD, (#10-32 x 2.00)
5	12-24676	WASHER, (.200 x .440 x .032)
6	10-32,11-68219	NUT, Stainless Steel

▶Water Hoses (29 parts)

Ref	OEM Part #	Part Name
1	22-8603001	FITTING
2	54-816311T	TIE STRAP, (8.00 Inches)
3	32-77653101	HOSE, (48.00 Inches Bulk), Cut to 20 Inches
4	22-687271	FITTING, (.250-18) 90 Degree - Brass
5	22-996642	FITTING, Elbow 90 Degree (.125-27 x .250) Nylon
6	54-816311T	TIE STRAP, (8.00 Inches)
7	32-85833939	HOSE, (17.00 Inches Bulk), Cut to 7 Inches
8	35-8348084	STRAINER
9	54-816311T	TIE STRAP, (8.00 Inches)
10	32-85833939	HOSE, (17.00 Inches Bulk), Cut to 4-1/2 Inches
11	22-291112	FITTING
12	54-816311T	TIE STRAP, (8.00 Inches)
13	32-83476463	TUBING, (32.00 Inches Bulk), Cut to 18-1/2 Inches
14	22-881866	FITTING
15	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 15 Inches
16	22-8M0207782	FITTING
17	71-8M0157742	SENSOR KIT, (0-50 PSI), TAN
18	54-883066	CLIP, (.865)
19	22-875207	TEE, Fitting
20	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 44 Inches
21	22-8M0214971	COUPLER
22	22-859732	PLUG
23	22-8M0214970	FITTING, Adapter
24	32-85978571	TUBING, (52.00 Inches Bulk), Cut to 5 Inches
25	32-8M0022492	HOSE, Water - Molded - Starboard
26	32-8M0022447	HOSE, Water - Molded - Port
27	54-816311T	TIE STRAP, (8.00 Inches)
28	22-687271	FITTING, (.250-18) 90 Degree - Brass
29	22-883089	FITTING

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 150 Pro XS (2.5L) 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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