Mercury 9.9 (0D281000 THRU 0G760299) Parts & Diagrams

🔎 Mercury 9.9 Reference Library — Exploded parts diagrams (24 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 9.9 is a 4-Stroke, Inline 2-Cylinder, EFI outboard motor. A popular choice for small fishing boats, inflatable RIBs, and sailboat auxiliaries.

Quick Reference Specifications

Specification	Value
Engine Type	4-Stroke, Inline 2-Cylinder, EFI
Horsepower	10 HP
Displacement	209 cc
Bore x Stroke	55 mm x 44 mm
Spark Plug (Type & Gap)	NGK DCPR6E
Engine Oil Capacity	0.8 L (27 fl oz)
Recommended Engine Oil	SAE 10W-30 Mercury 4-Stroke Outboard Oil
Gear Case Oil Capacity	320 mL (10.8 fl oz)
Idle Speed (in gear)	900 RPM
Full Throttle RPM Range	5000-6000
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 9.9:

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 9.9.

▶Accessories (1 parts)

Ref	OEM Part #	Part Name
0	12569A1	ATTACHING KIT, Cable And Pulley

▶Carb(15)(USA-S/N-0G112449/BEL-S/N-9831799 & Below) (40 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	1392-9726T19	CARBURETOR Comment: (WMC-39)
2	1395-823716	VALVE, Throttle
3	19267	SHAFT, Throttle (INCLS. SCREW & SPRING)
4	1395-9164	BOWL, Fuel
5	1395-91691	FLOAT
6	98551	VALVE, Inlet Needle
7	1399-4215	JET, Main Fuel (.066)
8	1395-9171	PLUG
9	813618	COVER
10	1395-9697	SCREW
11	15827A1	BODY
12	1395-9643	SCREW
13	1395-9699	PLATE
14	1395-9696	SCREW
15	1395-97611	GASKET/DIAPHRAGM KIT
16	1395-8237072	REPAIR KIT
17	1395-9637	COVER
18	1395-9762	PLUG
19	27-192061	GASKET, Carburetor
20	1395-9635	DIAPHRAGM/GASKET
21	128053	LEVER, Fast Idle
22	12803	BRACKET, Primer
23	11-821979	NUT
24	10-12110	SCREW, (#6-32 x .750)
25	24-11277	SPRING, Tension
26	10-400018	SCREW, (M5 x 12)
27	10-79965	SCREW, (#8-32 x .500) Stainless Steel
28	112731	LEVER, Primer
29	11280	CAM BLOCK
30	53-11278	CLIP, Retaining
31	12804A1	BEZEL ASSEMBLY, Choke
32	128022	PRIMER KNOB
33	10-40056110	SCREW, (M5 x 30)
34	11-400211	NUT, (M5) Stainless Steel
35	37-129701	DECAL (SLOW/FAST)
36	445541	IDLE WIRE
37	1395-823433	CHOKE, Electric
38	174421	COVER, Carburetor
39	19-47579	PLUG

▶Carb(6/8)(9.9 -USA-S/N-0G112449/BEL-S/N-9831799 & Below) (48 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	1392-8846A24	CARBURETOR Comment: (9.9) (WMC-23)
2	815133	VALVE, Throttle Comment: (WMC-23/41A)
3	813022	SHAFT, Throttle (INCL. SCREW/SPRING) Comment: (WMC-23/41A)
4	1395-9164	BOWL, Fuel
5	1395-91691	FLOAT
6	F10064	SHAFT
7	1395-5902	SCREW, (#6-32 x .187)
8	98551	VALVE, Inlet Needle
9	1395-6359	JET, (.052) Comment: (9.9)
10	1395-9171	PLUG
11	813618	COVER
12	1395-823648	COVER, Diaphragm Comment: (WMC-57)
13	1395-9697	SCREW
14	15827A1	BODY
15	1395-9643	SCREW
16	1395-9699	PLATE
17	27-44426	GASKET
18	1395-9696	SCREW
19	1395-96371	COVER, Fuel Pump Comment: (WMC-57)
20	1395-9637	COVER
21	1395-9762	PLUG
22	27-192061	GASKET, Carburetor (USE WHERE APPLICABLE)
23	1395-9635	DIAPHRAGM/GASKET
24	1395-97611	GASKET/DIAPHRAGM KIT
25	1395-96481	REPAIR KIT Comment: (WMC-20B)
26	1395-8237072	REPAIR KIT Comment: (WMC-23/41/57)
27	445541	IDLE WIRE
28	128053	LEVER, Fast Idle
29	12803	BRACKET, Primer
30	11-821979	NUT
31	10-12110	SCREW, (#6-32 x .750)
32	24-11277	SPRING, Tension
33	10-400018	SCREW, (M5 x 12)
34	10-79965	SCREW, (#8-32 x .500) Stainless Steel
35	112731	LEVER, Primer
36	11280	CAM BLOCK
37	53-11278	CLIP, Retaining
38	12804A1	BEZEL ASSEMBLY, Choke
39	128022	PRIMER KNOB
40	10-40056110	SCREW, (M5 x 30)
41	11-400211	NUT, (M5) Stainless Steel
42	37-129701	DECAL (SLOW/FAST)
43	1395-823433	CHOKE, Electric
44	174421	COVER, Carburetor
45	19-47579	PLUG
46	1395-9844A1	SERVICE KIT, Primer/Injector (See Illustration for Contents -Indicated by a Star)
47	12750A1	RESTRICTOR PLATE Comment: (RESTRICTED 6)

▶Carb(9.9/15)(USA-S/N-0G112450/BEL-S/N-9831800 & Up) (43 parts)

Ref	OEM Part #	Part Name
-	12750A1	RESTRICTOR PLATE
2	1395-823716	VALVE, Throttle Comment: (15) (WMC-49/49A)
3	19267	SHAFT, Throttle (INCL. SCREW/SPRING) Comment: (15) (WMC-49/49A)
4	1395-9164	BOWL, Fuel
5	1395-91691	FLOAT
6	F10064	SHAFT
7	1395-5902	SCREW, (#6-32 x .187)
8	98551	VALVE, Inlet Needle
9	1395-6207	JET, (.072) Comment: (15)
10	1395-9171	PLUG
11	1395-823648	COVER, Diaphragm
12	1395-9697	SCREW
13	15827A1	BODY
14	1395-9643	SCREW
15	1395-9699	PLATE
16	27-44426	GASKET
17	1395-9696	SCREW
18	1395-97611	GASKET/DIAPHRAGM KIT
19	1395-8237072	REPAIR KIT
20	1395-9637	COVER
21	1395-9762	PLUG
22	27-192061	GASKET, Carburetor (USE WHERE APPLICABLE)
23	1395-9635	DIAPHRAGM/GASKET
24	445541	IDLE WIRE
25	128053	LEVER, Fast Idle
26	12803	BRACKET, Primer
27	11-821979	NUT
28	10-12110	SCREW, (#6-32 x .750)
29	24-11277	SPRING, Tension
30	10-400018	SCREW, (M5 x 12)
31	10-79965	SCREW, (#8-32 x .500) Stainless Steel
32	112731	LEVER, Primer
33	11280	CAM BLOCK
34	53-11278	CLIP, Retaining
35	12804A1	BEZEL ASSEMBLY, Choke
36	128022	PRIMER KNOB
37	10-40056110	SCREW, (M5 x 30)
38	11-400211	NUT, (M5) Stainless Steel
39	37-129701	DECAL (SLOW/FAST)
40	1395-823433	CHOKE, Electric
41	174421	COVER, Carburetor
42	19-47579	PLUG
43	1395-9844A1	SERVICE KIT, Primer/Injector (See Illustration for Contents-Indicated by a Star)

▶Clamp Bracket (21 parts)

Ref	OEM Part #	Part Name
1	3404-8894A10	CLAMP BRACKET ASSEMBLY Comment: (Port-Tracker Graphite Gray) SN# 0G032156 & Up
1/2	3404-8894A12	CLAMP BRACKET ASSEMBLY Comment: (Port/Starboard-Black) SN# USA-0G032155/BEL-09806245 & Below
2	3403-8892A8	CLAMP BRACKET ASSEMBLY Comment: (Starboard-Graphite Gray) SN# 0G032156 & Up
3	10-92767A3	THUMB SCREW ASSEMBLY, (16 mm)
4	12-73719	WASHER
5	10-768042	SHOULDER SCREW, Hex
6	23-8M0084719	SPACER
7	10-4000333	SCREW, (M6 x 40)
8	37-12869	DECAL, Tilt Position
9	814427	SHUTTLE
10	8M0041936	TILT TUBE Comment: (ELECTRIC LONG W/REMOTE CONTROL)
11	54-8M0085928	CLIP
12	11-93164	NUT, (.875)
13	12-71421	WASHER, Nylon
14	42390A1	LEVER ASSEMBLY, Tilt Return
15	90901	STRAP, PORT SIDE
16	10-42498	SCREW, (M6 x 1.0)
17	13-31030	WAVE WASHER
18	10-43216	BOLT, (.250-20 x 3.50)
19	12-67983	WASHER
20	11-8267118	NUT, (.250-20)

▶Cowls (21 parts)

Ref	OEM Part #	Part Name
1	2191-8M0094069	TOP COWL ASSEMBLY Comment: (GRAPHITE GRAY)
2	444621	SEAL
3	13691A02	SOUND BLANKET KIT
4	817104A3	LATCH ASSEMBLY, Cowl
5	180402	LATCH HOOK
6	10-852530	SCREW, (.250-20 x 1.50)
7	12873T	SHIELD
8	10-400018	SCREW, (M5 x 12)
9	2192-9204A7	BOTTOM COWL Comment: (TRACKER GRAPHITE GRAY)
10	15061001	PLUG
11	87-11083A6	SWITCH ASSEMBLY, Stop
12	15920Q54	LANYARD ASSEMBLY
13	8M0032846	RETAINER, Brass
14	44461A1	LEVER, Cowl Latch
15	23-76470	BUSHING
16	13-69708	WAVE WASHER
17	11394	SPACER
18	121532	GROMMET, Bottom Cowl Comment: (REMOTE CONTROL)
19	25-12602002	GROMMET Comment: (TILLER) (OLD DESIGN)
20	25-8M0179867	GROMMET Comment: (REMOTE CONTROL)
21	37-855577A4	DECAL, EPA Label Information (INSIDE REAR TOP COWL) Comment: (9.9/15)(1998)

▶Crankshaft(15)(9.9-S/N-USA-0G112450/BEL-9831800 & Up) (26 parts)

Ref	OEM Part #	Part Name
-	19072T97	POWERHEAD ASSEMBLY Comment: (9.9) SN# USA-0G112450/BEL-9831800 & Up
1	11-818591	NUT, (M14)
2	260-859231T19	FLYWHEEL ASSEMBLY
3	43-99301	RING GEAR Comment: ELECTRIC
4	10-88190313	SCREW, (M5 x 13) Comment: ELECTRIC
5	400-8M0083309	CRANKSHAFT ASSEMBLY
6	818630A1	SLEEVE (INCLUDES O-RING)
7	30-41341	BEARING, Ball
8	12-824451	WASHER, (.610 Inside Diamter x .890 Outside Diameter x .062)
9	53-42132	RING, Retaining
10	12-13031	WASHER
11	26-125661	SEAL, Oil - Lower
12	28-20094	KEY, Woodruff
13	31-878158	BEARING, Roller
14	26-125671	SEAL, Oil - Upper, UPPER
15	637-8477A2	CONNECTING ROD ASSEMBLY
16	10-823460	SCREW, (M5 x 16)
17	31-42076A1	BEARING ASSEMBLY, Roller
18	29-42186	BEARING, Needle
19	12-8M0012297	BEARING, Thrust
20	784-9747A4	PISTON ASSEMBLY (.015 O.S.)
21	39-18212A1	RING SET, Piston (.015 O.S.)
22	40-422021	LOCK RING
23	17794A1	BEARING
24	26-818901	SEAL
25	31-42076A1	BEARING ASSEMBLY, Roller

▶Crankshaft(6/8)(9.9-USA-0G112449/BEL-9831799 & Below) (25 parts)

Ref	OEM Part #	Part Name
-	19072T97	POWERHEAD ASSEMBLY Comment: (9.9) SN# USA-0G112449/BEL-9831799 & Below
1	11-818591	NUT, (M14)
2	260-859231T19	FLYWHEEL ASSEMBLY
3	43-99301	RING GEAR Comment: ELECTRIC
4	10-88190313	SCREW, (M5 x 13) Comment: ELECTRIC
5	400-8M0083309	CRANKSHAFT ASSEMBLY
6	818630A1	SLEEVE (INCLUDES O-RING)
7	30-41341	BEARING, Ball
8	12-824451	WASHER, (.610 Inside Diamter x .890 Outside Diameter x .062)
9	53-42132	RING, Retaining
10	12-13031	WASHER
11	26-125661	SEAL, Oil - Lower
12	28-20094	KEY, Woodruff
13	31-878158	BEARING, Roller
14	26-125671	SEAL, Oil - Upper
15	637-8477A2	CONNECTING ROD ASSEMBLY
16	10-823460	SCREW, (M5 x 16)
17	31-42076A1	BEARING ASSEMBLY, Roller
18	29-42186	BEARING, Needle
19	12-8M0012297	BEARING, Thrust
20	773-9756T2	PISTON ASSEMBLY
21	39-18514A4	RING SET, Piston
22	40-422021	LOCK RING
23	41373A1	BEARING KIT, Center Main
24	26-818901	SEAL

▶Cylinder Block and Covers (47 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	881-9727T12	CYLINDER BLOCK Comment: (9.9)
2	17-85171	PIN, Dowel
3	16-424632	STUD, (M8 x 37.1)
4	21-426982	CHECK VALVE
5	32-892024122	TUBING, (20.00 Feet Bulk) (2-1/2 IN.)
6	16-8161949	STUD
7	10-421251	SCREW, (M8 x 55)
8	17-17866	PIN, Groove Comment: (15)
9	11-401386	NUT, (M6)
10	27-191861	GASKET, Powerhead
11	828435A3	REED BLOCK Comment: SN# USA-0G438000/BEL-9927000 & Up
12	828435A3	REED BLOCK ASSEMBLY Comment: (Replaced by One Piece Design Reed Block)
13	21-42657A3	CHECK VALVE Comment: (Replaced by One Piece Design Reed Block)
14	26-42137	SEAL Comment: (Replaced by One Piece Design Reed Block)
15	27-195982	GASKET Comment: (Replaced by One Piece Design Reed Block)
16	10-4005764	SCREW, (M3.5 x 8) Comment: (Replaced by One Piece Design Reed Block)
17	34-825141	REED Comment: (Replaced by One Piece Design Reed Block)
18	179031	STOP, Reed Comment: (Replaced by One Piece Design Reed Block)
19	10-4000171	SCREW, (M6 x 16) Comment: (Included with Powerhead on S/N-USA-0G438000-BEL-9927000 & Up)
20	11-400213	NUT, (M8) Stainless Steel
21	8M0048005	COVER
22	10-40062129	SCREW, (M6 x 25)
23	27-19185	GASKET
24	42365	PLATE, Baffle
25	27-19184	GASKET
26	10-40062129	SCREW, (M6 x 25)
27	22-56759	FITTING, Barbed
28	32-892024122	TUBING, (20.00 Feet Bulk) (5-1/4 IN.)(7 IN.)
29	22-59169003	FITTING
30	54-816311T	TIE STRAP, (8.00 Inches)
31	27-192031	GASKET Comment: (9.9/15) SN# USA-0G112449/BEL-9831799 & Below
32	19107F1	COVER, Intake Comment: SN# USA-0G112449/BEL-9831799 & Below
33	25-36324	O-RING, (1.549 x .103) Comment: (9.9/15) SN# USA-0G112450/BEL-9831800 & Up
34	826383F1	COVER, Intake Comment: (9.9/15) SN# USA-0G112450/BEL-9831800 & Up
35	32-8M0108355	HOSE, (57.00 Inches Bulk)
36	22-94848	FITTING, BOTTOM COWL
37	1033-8906A02	COVER ASSEMBLY
38	27-19207002	GASKET
39	8M0039352	COVER
40	27-19205002	GASKET
41	10-40062129	SCREW, (M6 x 25)
42	14586	THERMOSTAT (120 DEGREES)
43	27-8M0204714	GASKET
44	22-291112	CONNECTOR
45	10-40062129	SCREW, (M6 x 25)
46	16-429173	STUD Comment: (RESTRICTED/NORWAY MODELS)

▶Driveshaft Housing (19 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	1597-822155A3	HOUSING ASSEMBLY Comment: (TRACKER GRAPHITE GRAY)
2	27-195992	GASKET, Driveshaft Housing
3	8M0039074	MOUNT
4	42374F7	COVER, Mount Comment: (TRACKER GRAPHITE GRAY)
5	10-4009238	SCREW, (M6 x 80)
6	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
7	11-400212	NUT, (M6) Stainless Steel
8	10-40011131	SCREW, (M6 x 35) Stainless Steel
9	26-11287001	SEAL, Adapter Plate
10	41344A3	ADAPTOR PLATE ASSEMBLY Comment: (1-1/8 IN. I.D. TUBE) (15) USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
11	32-881203A2	TUBE ASSEMBLY, Water Comment: (LONG) USE WITH DESIGN II WATER TUBE
12	32-42122	TUBE, Water Comment: (LONG) USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
13	42371	HOLDER Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
14	27-192012	GASKET Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
15	10-40011107	SCREW, (M5 x 16) Stainless Steel Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
16	23-42465	SPACER Comment: USE WITH DESIGN I WATER TUBE SEE PARTS BULLETIN #94-3
17	26-42380001	SEAL
18	445551	BLOCK, Bearing Comment: (LONG)

▶Electrical Components (38 parts)

Ref	OEM Part #	Part Name
1	86-638131	TERMINAL BLOCK
2	10-48409	SCREW, (#10-16 x .625) Stainless Steel
3	10-62568	SCREW, (#10-16 x .375)
4	71663	PLUG
5	87-813960A4	SWITCH ASSEMBLY
6	84-79139A20	CABLE ASSEMBLY (RED)
7	84-12334A2	HARNESS ASSEMBLY, Engine Wiring Comment: (REMOTE CONTROL MODELS)
8	88-8M0207796	FUSE, 20 Ampere
9	12152	RETAINER
10	84-74725A2	HARNESS ASSEMBLY (20 IN. - BLACK/RED)
11	84-65017A10	HARNESS ASSEMBLY, Battery End (62 IN. - BLACK/RED)
12	10-4001167	SCREW, (M3.5 x 16) Stainless Steel Comment: (SIDE SHIFT)
13	10-88075020	SCREW, (M3.5 x 20) Stainless Steel Comment: (TILLER HANDLE SHIFT)
14	10-62568	SCREW, (#10-16 x .375)
15	54-8M0024808	J CLIP
16	8M0058226	RECTIFIER
17	10-48409	SCREW, (#10-16 x .625) Stainless Steel
18	10-32,11-45076	NUT, Brass
19	89-8M0185143	SOLENOID, Starter
20	10-4000327	SCREW, (M6 x 14)
21	10-32,11-45076	NUT, Brass
22	11-64015	NUT, (.250-20)
23	84-88809A5	WIRE ASSEMBLY (YELLOW)
24	84-88439A28	CABLE ASSEMBLY, Battery - Black
25	86704A10	STATOR ASSEMBLY
26	10-4000123	SCREW, (M5 x 30)
27	50-8M0033984	STARTER MOTOR ASSEMBLY
28	96561	DRIVE KIT
29	96562	DRIVE
30	96563T	END CAP
31	96565	ARMATURE
32	96564T	END CAP
33	10-96566	THRU BOLT
34	10-421251	SCREW, (M8 x 55)
35	87-823609A6	SWITCH ASSEMBLY, Start/Stop
36	889734	HOUSING, Switch
37	824918	CLIP
38	824923	PLATE

▶Fuel Filter Assembly (10 parts)

Ref	OEM Part #	Part Name
1	35-889527A07	FILTER ASSEMBLY, Fuel
2	35-87946Q04	FILTER ASSEMBLY
3	25-897536	SEAL
4	858731	BALL
5	32-8M0108355	HOSE, (57.00 Inches Bulk)
6	32-8M0108355	HOSE, (57.00 Inches Bulk)
7	54-816311T	TIE STRAP, (8.00 Inches)
8	22-15781A9	CONNECTOR KIT, Fuel
9	10-8M0204707	SCREW, (M6 x 25)
10	25-18202	GROMMET

▶Gear Housing(Driveshaft)(2.00:1 Gear Ratio) (43 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	1666-8833A20	GEAR HOUSING ASSEMBLY Comment: (TRACKER GRAPHITE GRAY)
2	23-12009	BUSHING, (.31 x .45 x .50)
3	22-8M0058389	FITTING KIT, Magnetic, Plug Fill/Drain
4	12-191833	WASHER, Fiber
5	822244A1	SLEEVE ASSEMBLY
6	23-823944	SLEEVE
7	23-823943	BUSHING
8	10-79953Q04	SCREW, (.375-16 x .250)
9	12-191833	WASHER, Fiber
10	35-421991	SCREEN
11	10-13954	SCREW, (.250-14 x .88)
12	97-42121Q02	ANODE ASSEMBLY
13	10-13954	SCREW, (.250-14 x .88)
14	26-42133	SEAL
15	43-8219251	GEAR, Pinion - 13-26 (13 TEETH)
16	12-41369	WASHER
17	31-22756	BEARING, Roller
18	46-42040T5	BASE ASSEMBLY, Water Pump
19	27-192043	GASKET
20	26-33613	SEAL
21	42375	RETAINER
22	10-48408	SCREW, (#10-16 x .500)
23	25-822236	QUAD RING
24	26-413651	SEAL, Oil
25	27-19202001	GASKET, Water Pump Plate
26	32-42185A1	TUBE ASSEMBLY, Water
27	42200	FACE PLATE
28	46-42089A2	COVER ASSEMBLY
29	26-421021	SEAL
30	47-42038Q02	IMPELLER
31	28-8M0173458	KEY ASSEMBLY
32	444671	GUIDE
33	10-8M0214957	SCREW, (M6 x 30)
34	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
35	42039	CAM
36	8M0026065	SHIFT SHAFT Comment: (LONG)
37	53-42389	E RING
38	8M0036770	GUIDE
39	10-40011109	SCREW, (M5 x 25) Stainless Steel
40	11-401385	NUT, (M5)
41	45-823390	DRIVESHAFT Comment: (LONG)
42	12-822248	THRUST WASHER

▶Gear Housing, Propeller Shaft - 2.00:1 Gear Ratio (23 parts)

Ref	OEM Part #	Part Name
-	27-42364A92	GASKET SET, Engine
1	1666-8833A20	GEAR HOUSING ASSEMBLY Comment: (TRACKER GRAPHITE GRAY)
43	31-821321A1	BEARING ASSEMBLY, Roller
44	43-821924A1	GEAR ASSEMBLY, Forward (26 TEETH)
45	23-41367	BUSHING
46	813139	FOLLOWER, Cam
47	52-821930A1	CLUTCH ASSEMBLY
48	17-823951	PIN, Cross
49	24-42204	SPRING
50	44-821929	PROPELLER SHAFT
51	43-821926T1	GEAR, Reverse - 13/26 (26 TEETH)
52	42144T3	CARRIER ASSEMBLY, Bearing
53	25-8M0214923	O-RING, (1.984 x .139)
54	23-821927	BUSHING
55	26-99325	SEAL
56	26-821928	SEAL, Oil
57	10-82407110	SCREW, (M8 x 50)
58	10-8240717	SCREW, (M8 x 30)
59	48-828150A12	PROPELLER, (9.25 x 6.50)
60	23-420911	SPACER
61	11-40140	NUT, (M10)
62	8219321	THRUST HUB (1.510 DIA.)
63	822559Q01	CUP ASSEMBLY, Reverse Exhaust Block

▶Ignition Components (18 parts)

Ref	OEM Part #	Part Name
1	86617A20	STATOR ASSEMBLY
2	10-4000120	SCREW, (M5 x 25)
3	10-400018	SCREW, (M5 x 12) (MANUAL)
4	98450A10	TRIGGER ASSEMBLY
5	11100	CLIP
6	339-7452A19	SWITCHBOX ASSEMBLY
7	10-40019108	SCREW, (M5 x 20)
8	10-48408	SCREW, (#10-16 x .500)
9	339-832757A4	COIL KIT
10	10-40112	SCREW, (M6 x 45)
11	88173	TAB WASHER
12	23-88171	BUSHING
13	10-32,11-45076	NUT, Brass
14	84-813715A2	CABLE SET, High Tension (5 and 8.25 Inch)
15	85-63709A1	BOOT/TERMINAL KIT
16	33-14814568	SPARK PLUG (NGK#BPZ8HS-15) Comment: (15)
17	54-816311T	TIE STRAP, (8.00 Inches)
18	84-88807A16	CABLE ASSEMBLY, (4.00 Inches) Black

▶Link Rod and Components (15 parts)

Ref	OEM Part #	Part Name
1	8M0041936	TILT TUBE
2	11-93164	NUT, (.875)
3	23-113841	SPACER
4	11607	BRACKET
5	10-4000354	SCREW, (M8 x 30)
6	12-56720	WASHER, (.330 x .750 x .060) Stainless Steel
7	11-401388	NUT, (M8)
8	11606A2	TIE ROD (PORT)
9	29698	BALL JOINT
10	12-8M0109680	WASHER, (.390 x .546 x .12)
11	12-30521	WASHER, (.97 x .56 x .19)
12	12-37828	WASHER, (.390 x .625 x .062) Stainless Steel
13	11-8M0204726	NUT, (.375-24)
14	23-66751	SPACER, (.250 x .390 x .630) Stainless Steel
15	19624A1	SEAL KIT

▶Manual Starter (25 parts)

Ref	OEM Part #	Part Name
-	42207A7	STARTER ASSEMBLY, Recoil
1	42207T02	HOUSING, Starter
2	8M0183792	BUSHING
3	53-818853	RING, Retaining
4	24-86857T01	SPRING
5	42034T04	PULLEY, Starter
6	50-12066Q10	ROPE
7	24-86851T02	SPRING
8	868501	CAM
9	53-86849T01	RING, Retaining
10	24-868523	SPRING
11	86853T01	CAM
12	10-826253	SCREW
13	833161T	PAD
14	19018T	REST
15	12674	SUPPORT
16	10-40019111	SCREW, (M5 x 35)
17	23-309772	SPACER
18	11-401385	NUT, (M5)
19	42171T	LEVER (UPPER)
20	12-8M0204666	WASHER, (.203 x .500 x .032)
21	42173T	LEVER (LOWER)
22	10-48408	SCREW, (#10-16 x .500)
23	10-8M0204741	SCREW, (M6 x 20) Stainless Steel
24	85174A1	HANDLE ASSEMBLY

▶Remote Control Attaching Components (26 parts)

Ref	OEM Part #	Part Name
1	10-4000332	SCREW, (M6 x 35)
2	42809	BRACKET, Control Arm
3	12-12132	WASHER, (.520 x 1.500 x .06)
4	23-823807	BUSHING
5	42810A8	ARM ASSEMBLY, Control
6	23-889731	BUSHING
7	878169	SHIFT LINK
8	18-210711	COTTER PIN
9	12-8M0204666	WASHER, (.203 x .500 x .032)
10	428071	ARM, Throttle Control
11	13-12134	WASHER, Wave
12	12-65567	WASHER, (.265 x .750 x .048) Stainless Steel
13	11-401386	NUT, (M6)
14	424291	RETAINER
15	8M0084741	LINK ASSEMBLY, Throttle
16	8M0084742	SOCKET
17	42805A3	BRACKET ASSEMBLY
18	11373	PIN, Latch
19	17-239281	PIN
20	10-42975	DRIVE SCREW
21	10-4000171	SCREW, (M6 x 16)
22	12-8M0204649	WASHER, (.281 x .500 x .060) Stainless Steel
23	428021	RETAINER
24	54-11372	CLIP
25	15822001	PLUG
26	54-816311T	TIE STRAP, (8.00 Inches)

▶Service/Support Material (1 parts)

Ref	OEM Part #	Part Name
0	37-855577A4	DECAL, EPA Label Information (INSIDE REAR TOP COWL) Comment: (9.9/15) (1998)

▶Swivel Bracket (30 parts)

Ref	OEM Part #	Part Name
-	37-8237011	DECAL, Co-Pilot
1	3402-8831A10	SWIVEL BRACKET ASSEMBLY Comment: (Tracker Graphite Gray) SN# USA-0G032156/BEL-9806246 & Up
2	22-8M0169589	FITTING, Grease
3	42124A2	PLATE ASSEMBLY, Co-Pilot
4	23-421402	BEARING
5	23-42080T01	BEARING, Thrust - Upper
6	23-42139	BUSHING
7	26-42077	SEAL
8	12-42373	THRUST WASHER
9	24-421301	SPRING
10	42082T04	BRACKET
11	17-420811	PIN
12	8M0075731	HOOK, Reverse Lock
13	17-830741A1	PIN, Pivot Comment: DESIGN I
14	91963	WASHER, (.390 x .600 x .032) Comment: DESIGN I
15	17-830741A1	PIN ASSEMBLY, Pivot Comment: DESIGN II
16	NSS	NOT SOLD SEPARATE Comment: DESIGN II
17	91963	WASHER, (.390 x .600 x .032) Comment: DESIGN II
18	24-42128	SPRING
19	42085F5	CARRYING HANDLE Comment: (GRAY)
20	24-42127	SPRING
21	53-13194	RING, Retaining
22	821961	ROD
23	8165621	DISC
24	821958A1	PLATE KIT
25	10-82130014	SCREW, (M6 x 14)
26	821957	BRAKE PLATE
27	12-29330	WASHER
28	821959	HANDLE
29	11-8M0204726	NUT, (.375-24)

▶Swivel Head and Steering Handle (25 parts)

Ref	OEM Part #	Part Name
1	42213A26	SWIVEL HEAD Comment: (TRACKER GRAPHITE GRAY)
2	23-823939	BUSHING
3	8221471	PLATE Comment: (USE WITH 5MM SCREWS REF #4)
4	10-4006731	SCREW, (M6 x 16)
5	12-822145	WASHER
6	13-826792	WAVE WASHER
7	12-822146	WASHER
8	821468T9	ARM ASSEMBLY, Steering Handle Comment: (GRAY)
9	822441	RETAINER
10	10-40011107	SCREW, (M5 x 16) Stainless Steel
11	822148A2	COVER KIT Comment: (SIDE SHIFT)
12	822150	PULLEY
13	NSS	NOT SOLD SEPARATE, Pulley Case (PART OF REF. #11)
14	10-878608	SCREW, (#10-16 x .500)
15	432426	CABLE, Throttle Comment: (SIDE SHIFT)
16	85-960099	SLEEVE, (12.00 Inches) Comment: (SIDE SHIFT)
17	37-8242004	DECAL Comment: (SIDE SHIFT)
18	8M0221732	GRIP
19	87-8M0104615	SWITCH ASSEMBLY, Stop
20	821972T	KNOB, Throttle
21	892995	LOCK, Throttle
22	10-8M0204707	SCREW, (M6 x 25)
23	821465	HANDLE, Throttle Comment: (SIDE SHIFT)
24	821463T01	TILLER TUBE
25	24-96203	SPRING

▶Throttle and Shift Linkage(Side Shift) (27 parts)

Ref	OEM Part #	Part Name
1	421811	BRACKET, Cable
2	10-4000171	SCREW, (M6 x 16)
3	10-40056107	SCREW, (M5 x 16)
4	12-4002314	WASHER
5	421571	SHIFT HANDLE
6	44459001	GROMMET
7	8155501	SHIFT SHAFT
8	42156	LEVER
9	42153	LEVER
10	24-39627	SPRING
11	10-400011	SCREW, (M5 x 8)
12	421671	TIMING LINK
13	421631	LEVER, Control
14	10-40019111	SCREW, (M5 x 35)
15	13-69708	WAVE WASHER
16	24-42164	SPRING
17	24-13676	SPRING
18	421662	ACTUATOR
19	23-421621	BUSHING
20	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel
21	10-4000333	SCREW, (M6 x 40)
22	42161	LINK INTERLOCK
23	421592	LEVER
24	24-42160	SPRING
25	10-4000331	SCREW, (M6 x 30)
26	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel
27	23-421581	BUSHING

▶Throttle and Shift Linkage(Tiller Handle Shift) (34 parts)

Ref	OEM Part #	Part Name
1	8M0047593	CONTROL PLATFORM
2	94085A1	GEAR
3	10-826650	SCREW, (M6 x 30)
4	12-8M0214930	WASHER
5	23-856737	SPACER (SHORT)
6	11-400212	NUT, (M6) Stainless Steel
7	42151	LEVER, Primary
8	10-4000333	SCREW, (M6 x 40)
9	23-856738	SPACER (LONG)
10	10-4000171	SCREW, (M6 x 16)
11	421671	TIMING LINK
12	421631	LEVER, Control
13	10-40019111	SCREW, (M5 x 35)
14	421662	ACTUATOR
15	42161	LINK INTERLOCK
16	10-4000333	SCREW, (M6 x 40)
17	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel
18	23-421621	BUSHING
19	24-42164	SPRING
20	13-69708	WAVE WASHER
21	24-13676	SPRING
22	8M0084745	LINK ASSEMBLY, Throttle
23	8M0084742	SOCKET
24	421592	LEVER
25	23-421581	BUSHING
26	24-42160	SPRING
27	10-4000331	SCREW, (M6 x 30)
28	12-69056	WASHER, (.255 x .620 x .030) Stainless Steel
29	42156	LEVER
30	42153	LEVER
31	8155501	SHIFT SHAFT
32	815567T02	SHIFT LINK
33	10-400011	SCREW, (M5 x 8)
34	24-39627	SPRING

▶Tools (1 parts)

Ref	OEM Part #	Part Name
-	NSS	NOT SOLD SEPARATE, Expanding Rod (Snap-On #CG40A6)

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 9.9 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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