Mercury 110 (2798057 THRU 3263262) Parts & Diagrams

OEM and aftermarket replacement parts for Mercury 110. Scroll down for exploded parts diagrams (17), specifications, and maintenance reference.

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Water Pump Impeller – Fits Mercury 3.9 - 9.8 HP Outboards (Replaces 47 - 89981) - JLM Marine Boat Parts Limited
Impulsor de bomba de agua para Mercury 3.9-9.8 HP 47-89981
$15.95
$15.95
files/Water_Pump_Impeller_for_Mercury_39-98_HP_47-89981_-_JLM_MARINE-8289780.jpgDefault Title
$15.95
photo of red spark plug wire jlm marine 18-8819; right-angled black boot on one end, conical black boot with visible metallic terminal on other end
Cable de bujía de 7 pulgadas compatible con motores fueraborda Mercury Marine de 150, 175 y 200 HP 18-8819
$21.10
$21.10
files/7_inches_Spark_Plug_Wire_fits_Mercury_Marine_150_175_200_HP_Outboard_Motors______18-8819_-_JLM_MARINE-8286634.jpgDefault Title
$21.10
Water Pump Impeller – Fits Mercury 4, 4.5, 6, 7.5, 9.8 HP (Replaces 47 - 89981, 47 - 65957) - JLM Marine Boat Parts Limited
Impulsor de bomba de agua para Mercury 4 4,5 6 7,5 9,8 HP 47-89981 47-65957
$15.95
$15.95
files/Water_Pump_Impeller_for_Mercury_4_45_6_75_98_HP_47-89981_47-65957_-_JLM_MARINE-8288499.jpgDefault Title
$15.95
Gearcase Drain Plug – Fits Mercury/MerCruiser Marine Engines (Replaces 10 - 79953Q04, 79953Q04) - JLM Marine Boat Parts Limited
Tapón de aceite no magnético de unidad inferior para motores fueraborda Mercury Mariner y MerCruiser Sterndrive 79953Q04
$21.50
$21.50
files/Lower_Unit_Non-Magnetic_Oil_Plug_for_Mercury_Mariner_Outboard_and_MerCruiser_Sterndrive_______79953Q04_-_JLM_MARINE-8287053.jpgDefault Title
$21.50
9 - inch Spark Plug Wire – Fits Mercury Marine 150 - 175 - 200HP Outboards - JLM Marine Boat Parts Limited
Cable de bujía de 9 pulgadas compatible con motores fueraborda Mercury Marine de 150, 175 y 200 HP 18-5228
$20.19
$20.19
files/9_inches_Spark_Plug_Wire_fits_Mercury_Marine_150_175_200_HP_Outboard_Motors___18-5228_-_JLM_MARINE-8286628.jpgDefault Title
$20.19

Mercury 110 (2798057 THRU 3263262) Parts & Diagrams

🔎 Mercury 110 Reference Library — Exploded parts diagrams (17 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 110 is a 2-Stroke, Inline 4-Cylinder outboard motor. A popular choice for small fishing boats, inflatable RIBs, and sailboat auxiliaries.

Quick Reference Specifications

Specification Value
Engine Type 2-Stroke, Inline 4-Cylinder
Horsepower 10 HP
Displacement —
Bore x Stroke —
Spark Plug (Type & Gap) —
Engine Oil Capacity —
Recommended Engine Oil SAE 10W-30 4-Stroke Marine Oil
Gear Case Oil Capacity —
Idle Speed (in gear) —
Full Throttle RPM Range —
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 110:

  • 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 110.

▶BOTTOM COWL AND ADAPTOR PLATE (52 parts) BOTTOM COWL AND ADAPTOR PLATE
Ref OEM Part # Part Name
1 56711A2 ADAPTOR PLATE ASSEMBLY
2 23-13127 WASHER, NYLON - WATER OUTLET TUBE (ADAPTOR PLATE)
3 26-36556 SEAL, RUBBER - WATER OUTLET TUBE (ADAPTOR PLATE) 4
4 39044 SEAL, RUBBER - ADAPTOR PLATE
5 27-89937 GASKET, POWERHEAD TO PLATE 4
6 10-69026 SCREW, ADAPTOR PLATE TO DRIVER SHAFT HOUSING (7/8")
7 13-26992 LOCKWASHER, ADAPTOR PLATE SCREW
8 27-39050 GASKET, ADAPTOR PLATE TO DRIVE SHAFT HOUSING 4
9 2124-4416A2 COWL ASSEMBLY, BOTTOM Comment: SERIAL #3002814-09999999
10 56069 ANCHOR, LATCH - BOTTOM COWL
11 10-22483 SCREW, LATCH ANCHOR TO BOTTOM COWL (1 1/8")
12 13-26992 LOCKWASHER, LATCH ANCHOR SCREW
13 25-39054 GROMMET, CHOKE SHAFT - BOTTOM COWL
14 59100 COVER, AIR INTAKE - BOTTOM COWL Comment: SERIAL #3002714-09999999
15 39068 PAD, SOUND - COVER PLATE Comment: SERIAL #2798057-02038830
16 10-8M0113176 SCREW, AIR INTAKE COVER TO BOTTOM COW (3/8")
17 39058 SEAL, SHIFT HANDLE - BOTTOM COWL
18 39145 MOUNT RUBBER - RUBBER - BOTTOM COWL TO ADAPTOR PLATE (STARBO
19 39144 MOUNT, RUBBER - BOTTOM COWL TO ADAPTOR PLATE (PORT)
20 10-96138 SCREW, RUBBER MOUNT TO BOTTOM COWL (1/2") Comment: SERIAL #3002814-09999999
21 11-8M0207775 NUT, ADAPTOR PLATE TO RUBBER MOUNT
22 39565 SPOOL, NYLONG - TOP COWL ALTCHING (BOTTOM COWL)
23 10-32228 SCREW, NYLON SPOOL TO BOTTOM COWL (5/8")
24 13-26996 LOCKWASHER, NYLON SPOOL SCREW
25 39147 ADAPTOR, REAR MOUNT TO BOTTOM COWL
26 10-69026 SCREW, REAR MOUNT ADAPTOR TO BOTTOM COWL (7/8")
27 13-26992 LOCKWASHER, REAR MOUNT ADAPTOR SCREW
28 39146 MOUNT, RUBBER - BOTTOM COWL TO ADAPTOR PLATE (REAR)
29 13-26992 LOCKWASHER, REAR MOUNT
30 11-8M0207775 NUT, ADAPTOR PLATE TO REAR RUBBER MOUNT
31 63648 ROD, COWL LATCH - BOTTOM COWL
32 39099 BRACKET, COWL LATCH ROD
33 10-69026 SCREW, COWL LATCH BRACKET TO BOTTOM COWL (7/8")
34 13-26992 LOCKWASHER, COWL LATCH BRACKET SCREW
35 39083 HANDLE, COWL LATCH ROD (PORT)
36 39098 HANDLE, COWL LATCH ROD (STARBOARD)
37 23-22981 BUSHING, NYLONG- COWL LATCH ROD TO BOTTOM COWL 2
38 17-25319 PIN, ROLL - HANDLE TO COWL LATCH ROD
39 32-8M0108355 TUBE, TELL TALE (11")
40 56712 NOZZLE, TELL TALE
41 10-41228 SCREW, TELL TALE NOZZLE TO BOTTOM COWL
42 59065A1 STOP SWITCH ASSEMBLY (NOT AS SHOWN) Comment: SERIAL #3002814-09999999
43 38950A1 COVER ASSEMBLY, STOP SWITCH Comment: SERIAL #3002814-09999999
44 12-59061 WASHER, STATOR LEAD TO STOP SWITCH Comment: SERIAL #3002814-09999999
45 13-26996 LOCKWASHER, STATOR LEAD TO STOP SWITCH Comment: SERIAL #3002814-09999999
46 11-68219 NUT, STATOR LEAD TO SOTP SWITCH Comment: SERIAL #3002814-09999999
47 13-21972 LOCKWASHER, STOP SWITCH CONNECTOR
48 11-21971 NUT, STOP SWITCH TO BOTTOM COWL
49 57845A1 GROUND WIRE, BOTTOM COWL (4 1/2") Comment: SERIAL #2798057-02938830
50 46933A1 GROUND WIRE, COVER PLATE SCREW (3 5/8") Comment: SERIAL #2798057-02938830
51 10-8M0113176 SCREW, STOP SWITCH LEAD TO BOTTOM COWL (3/8") Comment: SERIAL #2798057-02938830
52 59796A1 GROUND WIRE, RUBBER MOUNT SCREW AND NUT (3") Comment: SERIAL #3002814-09999999
▶CARBURETOR ASSEMBLY (22 parts) CARBURETOR ASSEMBLY
Ref OEM Part # Part Name
-- 1399-4206 REPAIR PARTS KIT
1 1334-4106 CARBURETOR ASSEMBLY, COMPLETE (KB-11A)
2 1395-8673 FLOAT ASSEMBLY
6 1395-92581 INLET NEEDLE, SEAT AND GASKET
9 1399-1133 COVER, FLOAT BOWL
10 10-52195 SCREW, FLOAT BOWL COVER (SHORT)
11 10-52196 SCREW FLOAT BOWL COVER (LONG)
12 13-26995 LOCKWASHER, FLOAT BOWL COVER SCREW
14 1399-3938 SCREEN, FILTER
16 1399-4791A1 COVER, STRAINER
18 10-25822 SCREW, STRAINER COVER
19 1395-6027 SCREW, THROTTLE STOP LEVER
20 8146791 LEVER, THROTTLE STOP
21 1399-1716 SHAFT, THROTTLE
25 1399-3763 SHUTTER, THROTTLE
28 10-28845 SCREW, PLUG - BODY CHANNEL
30 10-23178 SCREW, PLUG - MAIN NOZZLE
31 1399-1864 JET, MAIN FUEL (.043)
34 10-28405 SCREW, PLUG - MAIN FUEL JET CHANNEL
35 1399-3740 SCREW, IDLE ADJUSTMENT
37 27-63309 GASKET, CARBURETOR FLANGE
38 11-8M0207775 NUT, CARBURETOR MOUNTING STUDS
▶CARBURETOR CHOKE LINKAGE (9 parts) CARBURETOR CHOKE LINKAGE
Ref OEM Part # Part Name
1 59000 THROTTLE LEVER Comment: SERIAL #3002814-09999999
2 10-20597 SCREW, THROTTLE LEVER TO CARBURETOR (3/8") Comment: SERIAL #3002814-09999999
3 79092 SHUTTER AND SCREEN - CARBURETOR
4 24-53310 SPRING, CHOKE SHUTTER TO LEVER
5 24-55299A1 SPRING ASSEMBLY, CHOKE SHUTTER
6 10-55298 SCREW, SPRING TO CARBURETOR
7 53188 LEVER, CHOKE SHUTTER
8 24-53190 SPRING, TENSION - CHOKE LEVER SHAFT
9 53200 KNOB AND SHAFT - CHOKE
▶CLAMP AND SWIVEL BRACKET ASSEMBLY (53 parts) CLAMP AND SWIVEL BRACKET ASSEMBLY
Ref OEM Part # Part Name
1 1467-5406A2 CLAMP BRACKET ASSEBMLY (PORT) Comment: SERIAL #3002814-09999999
2 1467-5571A3 CLAMP BRACKET ASSEBMLY (STABOARD) Comment: SERIAL #3002814-09999999
3 59170A3 THUMB SCREW ASSEMBLY Comment: SERIAL #3002814-09999999
4 12-26227 WASHER, THUMB SCREW Comment: SERIAL #3002814-09999999
5 12-52864 WASHER, TILT TUBE - CLAMP TO SWIVEL BRACKER
6 45757 TILT TUBE, CLAMP BRACKET TO SWIVEL BRACKER
7 54-8M0085928 CLAMP, SAFETY CHAIN - TILT TUBE
8 11-858869 NUT, TILT TUBE FASTENING
9 16-59622 STUD, CLAMP BRACKET SPACER
10 11-29598 NUT, CLAMP BRACKET STUDE FASTENING
11 10-67982 SCREW, CLAMP BRACKET TO BOAT TRANSOM (2 3/4")
12 12-67983 WASHER, CLAMP BRACKET SCREW
13 11-8267098 NUT, CLAMP BRACKET SCREW
14 17-55952A1 TILT LOCK PIN ASSEMBLY
15 23-30813 SPACER, TUBE - REVERSE LOCK LEVER ROD
16 23-26856 BUSHING, NYLON - REVERSE LOCK LEVER ROD
17 56663 ROD, REVERSE LOCK TO SWIVEL BRACKET
18 18-56206 COTTERR PIN, REVERSE LOCK LEVER TO ROD
19 30815 LINK, REVERSE LOCK LEVER
20 53267A1 REVERSE LOCK LEVER ASSEMBLY
21 53435 BRACKET, STOP
22 24-53456 SPRING, EXTENSION - STOP BRACKET
23 24-31918 SPRING, TENSION - REVERSE LOCK LEVER
24 62257A2 ROD, LINK - REVERSE LOCK LEVER Comment: SERIAL #3002814-09999999
25 17-25905 PIN, ROLL -SWIVEL BRACKET CONTROL ELVER Comment: SERIAL #3002814-09999999
26 62257A2 LINK ASSEMBLY, REVERSE LOCK CONTROL LEVER Comment: SERIAL #3002814-09999999
27 62024T LEVER, CONTROL - REVERSE LOCK Comment: SERIAL #3002814-09999999
28 23-31309 SPACER, CONTROL ELVER SCREW
29 10-852368 SCREW, CONTROL ELVER TO LINK
30 12-8M0204666 WASHER, CONTROL ELVER FASTENING SCREW
31 13-34632 WASHER, WAVE - CONTROL LEVER SCREW
32 12-24812 WASHER, CONTROL LEVER SCREW
33 20203 DISC, FRICTION - CLAMP PLATE AND SWIVEL BRACKET
34 61296 PLATE, CLAMP - CO-PILOT
35 10-56649 SCREW, CLAMP PLATE ADJUSTING
36 23-59573 SPACER, CLAMP PLATE ADJUSTING SCREW Comment: SERIAL #3002814-09999999
37 13-48239 WASHER, WAVE - CLAMP PLATE ADJUSTING SCREW
38 19-77633Q LUBRICAP, GREASE FITTING
39 22-8M0169589 FITTING, GREASE - SWIVEL BRACKET
40 1451-1788 SWIVEL BRACKET
41 25-25439 "O" RING, SWIVEL BRACKET
42 38-31042 SERIAL PLATE
43 10-28642 SCREW, DRIVE - SERIAL PLATE TO SWIVEL BRACKET
44 63310A1 LEVER, TILT STOP
45 10-29237 SCREW, RETAINING - TILT STOP LVER
46 11-8M0207775 NUT, TILT STOP LEVER RETAINING SCREW
47 10-27791 SCREW, ANCHOR - TILT STOP LEVER
48 13-20846 WASHER, WAVE - LEVER ANCHOR SCREW
49 11-8M0207775 NUT, TILT STOP LEVER ANCHOR SCREW
50 17-30688 SWIVEL PIN, SWIVEL BRACKET TO SADDLE
51 77334 CO-PILOT DISC
52 10-30679 SCREW, CO-PILOT DISC TO SADDLE
53 11-8M0207775 NUT, CO-PILOT DISC FASTENING SCREW
▶CRANKSHAFT AND MAIN BEARING ASSEMBLY (8 parts) CRANKSHAFT AND MAIN BEARING ASSEMBLY
Ref OEM Part # Part Name
1 421-2224 CRANKSHAFT
2 550-8122A5 MAIN BEARING ASSEMBLY (VALVE TYPE)
3 17-65855 PIN, DOWEL - MAIN BEARING
4 10-56781 SCREW, MAIN BEARING CLAMPING
5 17-20032 PIN, DOWEL - MAIN BEARING TO BLOCK
6 34-31942A1 REED SET, MATCHED - MAIN BEARING
7 34-20053 REED STOP, MAIN BEARING REED VALVES
8 10-27304 SCREW, REED STOP MOUNTING
▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (38 parts) CYLINDER BLOCK AND CRANKCASE ASSEMBLY
Ref OEM Part # Part Name
1 837-2756A7 CYLINDER BLOCK AND CRANKCASE ASSEMBLY
2 21-28481A1 CHECK VALVE ASSEMBLY, CRANKCASE
3 19-56688 WELCH PLUG, CYLINDER BLOCK
4 16-728091 STUD, BLOCKE AND CRANKCASE TO DRIVE SHAFT HOUSING
5 10-657461 STUD, CARBURETOR MOUNTING
6 17-21438 PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK
7 22-996642 ELBOW, TELL TALE - CYLINDER BLOCK
8 10-64278 SCREW, CRANKCASE TO CYLINDER BLOCK (1")
9 10-24624 SCREW, CRANKCASE TO CYLINDER BLOCK (1 3/4")
10 11-8M0207775 NUT, CRANKCASE FASTENING SCREW
11 10-98260 SCREW, MAIN BEARING LOCKING
12 14-20091 TAB WASHER, MAIN BEARING LOCKING SCREW
13 15-31412A1 SHIM, UPPER HOUSING TO CYLINDER BLOCK (.002-3-5-10)
14 1141-3971A1 BEARING HOUSING ASSEMBLY, UPPER (NOT AS SHOWN)
15 30-72961 BEARING, BALL - UPPER BEARING HOUSING
16 31-31410 BEARING, FOLLER - UPPER BEARING HOUSING
17 26-66301 OIL SEAL, UPPER BEARING HOUSING
18 25-20863 "O" RING, UPPER BEARING HOUSING
19 10-28707 SCREW, UPPER BEARING HOUSING(1/2")
20 27-780321 GASKET, TRANSFER PORT COVER
21 31430 COVER, TRANSFER PORT
22 10-20665 SCREW, PORT COVER TO CYLINDER BLOCK (1/2")
23 1019-7465A1 COVER, CYLINDER BLOCK
24 27-41382 GASKET, CYLINDER BLOCK
25 10-21091 SCREW, CYLINDER BLOCK COVER TO CYLINDER BLOCK (1 1/8")
26 11-8M0207775 NUT, CYLINDER BLOCK COVER MOUNTING SCREW
27 27-78035 GASKET, CYLINDER BLOCK TO BAFFLE PLATE
28 78034 {LATE, BAFFLE - EXHAUST MANIFOLD
29 27-78035 GASKET, BAFFLE PLATE TO EXHAUST MANIFOLD COVER
30 74919T COVER, EXHAUST MANIFOLD
31 10-28668 SCREW, BAFFLE PLATE AND MANIFOLD COVER MOUNTING(7/8")
32 30212 TERMINAL BLOCK, EXHAUST MANIFOLD COVER SERIAL Comment: SERIAL #2798057-02938830
33 10-35519 SCREW. TERMINAL BLOCK TO EXHAUST MANIFOLD COVER Comment: SERIAL #2798057-02938830
34 10-62568 SCREW, MAGNETO GROUND LEADS TO TERMIANL BLOCK Comment: SERIAL #2798057-02938830
35 30-72961 BEARING, BALL - CRANKCASE (LOWER)
36 26-56397 OIL SEAL, CRANKCASE (LOWER0
37 10-23015 SCREW, ADJUSTING - THROTTLE CONTROL
38 11-68219 NUT, THROTTLE CONTROL ADJUSTING SCREW
▶DRIVE SHAFT HOUSING ASSEMBLY (20 parts) DRIVE SHAFT HOUSING ASSEMBLY
Ref OEM Part # Part Name
1 1558-4031A1 DRIVE SHAFT HOUSING ASSEMBLY (LONG SHAFT)
2 16-66373 STUD, DRIVE SHAFT HOUSING TO GEAR HOUSING
3 11-8M0204726 NUT, DRIVE SHAFT HOUSING STUDE (3/8 - 24)
4 11-82670911 NUT, GEAR HOUSING TO DRIVE SHAFT HOUSING STUD (5/16 - 24
5 39025 COVER, TRIM - DRIVE SHAFT HOUSING
6 10-25764 SCREW, TRIM COVER TO BOTTOM COWL (7/16")
7 32-39062 TUBE, WATER OUTLET (LONG SHAFT)
8 10-79953Q04 SCREW, FLUSH - DRIVE SHAFT HOUSING
9 12-191833 WASHER, SEALING - FLUSH SCREW
10 27-39050 GASKET, ADAPTOR PLATE TO DRIVE SHAFT HOUSING
11 11-24652 NUT, POWERHEAD TO DRIVE SHAFT HOUSING STUDS
12 47259A1 BLOCK ASSEMBLY, DRIVE SHAFT LONG SHAFT
13 10-47225 SCREW, BLOCK ASSEMBLY TO DRIVE SHAFT HOUSING LONG SHAFT
14 1559-8448A2 SADDLE
15 32021 BUMPER, LOWER THRUST - SADDLE
16 79896A1 MOUNT ASSEMBLY, UPPER AND LOWER Comment: FOR LONG-SHAFT ENGINES, REPLACE 2 UPPER MOUNT ASSEMBLIES (A-30646A2) WITH 2 A-30646A3 MOUNT ASSEMBLIES.
17 53-26406 RING, RETAINING - UPPER AND LOWER MOUNT
18 71490 COVER, LOWER MOUNT
19 71490 COVER, UPPER MOUNT
20 10-45817 SCREW, LOWER MOUNT COVER TO MOUNT (7/16")
▶FLYWHEEL, STATOR AND IGNITION COIL (48 parts) FLYWHEEL, STATOR AND IGNITION COIL
Ref OEM Part # Part Name
1 11-20696 NUT, FLYWHEEL
2 12-36245 WASHER, FLYWHEEL NUT
3 25-62701 "0" RING, FLYWHEEL NUT
4 28-20094 KEY, FLYWHEEL DRIVE
5 239-4174A1 FLYWHEEL ASSEMBLY
6 13-35629 WASHER, WAVE - CAM TENSION
7 336-3928 CAM, BREAKER
8 336-3996A7 STATOR ASSEMBLY Comment: SERIAL #3002814-09999999
9 10-69560 SCREW, STATOR TO END CAP (1 1/4")
10 336-3979A1 HOUSING ASSEMBLY, CONTACT
11 336-4318A2 BREAKER ASSEMBLY, CONTACT HOUSING
12 10-56266 SCREW, BREAKER TO CONTACT HOUSING (3/8")
13 56317A1 CABLE ASSEMBLY, CONTACT HOUSING (BROWN - 17 3/4")
14 38938 BOOT, CABLE
15 336-3989 WICK, CAM WIPER - CONTACT HOUSING
16 336-3981 INSULATOR, CABLE TO CONTACT HOUSING
17 11-56325 NUT, CABLE INSULATOR
18 336-4429 HOLDER, CONTACT HOUSING Comment: SERIAL #2798057-09999999
19 336-3988A1 COVER ASSEMBLY, CONTACT HOUSING
20 10-56336 SCREW, COVER TO CONTACT HOUSING (1/2")
21 12-56077 WASHER, WEAR - CONTACT HOUSING TO UPPER BEARING HSG.
22 13-59145 WASHER, WAVE - CONTACT HOUSING TO UPPER BEARING HSG. Comment: SERIAL 03002814-09999999
23 54-26550 CLIP, CONTACT HOUSING AND STATOR LEADS
24 10-62568 SCREW, CONTACT HOUSING AND STATOR LEADS CLIP ATTACHING
25 8M0084613 "D" WASHER, CLIP SCREW
26 36000 CAM, THROTTLE
27 10-28707 SCREW, THROTTLE CAM TO CONTACT HOUSING (1/2")
28 34361 LINK, THROTTLE
29 10-34696 SCREW, THROTTLE LINK TO THROTTLE LEVER AND CONTACT HOUSING (
30 12-34392 WASHER, THROTTLE LINK SCREW
31 13-29720 WASHER, WAVE - THROTTLE LINK SCREW
32 11-28656 NUT, THROTTLE LINK SCREW
33 56757A1 JUMPER WIRE ASSEMBLY, STATOR TO THROTTLE LINK
34 10-8M0113176 SCREW, JUMPER WIRE ATTACHING (5/16")
35 336-4409A4 COIL ASSEMBLY, IGNITION (SERIAL #3002814 AND UP)
36 56318A4 JUMPER WIRE ASSEMBLY, COIL TO COIL (8")
37 13-26996 LOCKWASHER, IGNITION COIL TERMINAL
38 11-45076 NUT, IGNITION COIL TERMINAL
39 56188 COVER, IGNITION COIL
40 10-56543 SCREW, COIL COVER TO COIL MOUNTIN BRACKER (2 1/8")
41 11-27164 NUT, COIL COVER SCREW
42 56352 BRACKET, COIL SUPPORT
43 10-64278 SCREW, BRACKER TO CYLINDER BLOCK (1")
44 11-8M0207775 NUT, BRACKER SCREW
45 84-813715A1 LEAD ASSEMBLY, HIGH TENSION
46 332-2854T01 NIPPLE, IGNITION COIL
47 85-63709A1 PROTECTOR ASSEMBLY, SPARK PLUG
48 33-896329833 SPARK PLUG (AC #V10FFK)
▶FUEL PUMP ASSEMBLY (19 parts) FUEL PUMP ASSEMBLY
Ref OEM Part # Part Name
1 89977A1 FUEL PUMP ASSEMBLY
2 21-30430A2 CHECK VALVE ASSEMBLY
3 53245A1 DIAPHRAGM KIT, FUEL PUMP
6 53241 BASE, FUEL PUMP
7 54066 COVER, FUEL PUMP
8 22-54090 ELBOW, FUEL PUMP OUTLET
9 10-32627 SCREW, FUEL PUMP TO BASE
10 12-847883 WASHER, FUEL PUMP SCREW
11 32-64055 FUEL LINE, FUEL PUMP TO CARBURETOR (5")
12 32-9912688 HOSE, PRESSURE - FUEL PUMP (7 1/8")
13 22-53553 ELBOW, CYLINDER LBOCK TO PRESSURE HOSE (45)
14 54-20387 CLAMP, PRESURE HOSE FASTENING
15 32-39485 FUEL LINE, FUEL PUMP TO ADAPTOR (5 1/4")
16 32454 ADAPTOR, CHEKC UNIT (FUEL LINE)
17 39052 SEAL, ADAPTOR TO BOTTOM COWL
18 10-98509 SCREW, ADAPTOR TO COWL (1 1/8") Comment: SERIAL #3002814-09999999
19 24-28357 SPRING, ADAPTOR SCREW
20 11-20110 NUT, ADAPTOR SCREW Comment: SERIAL #2798057-02938830
21 10-29200 SCREW, FUEL PUMP TO ANCHOR (5/8")
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (46 parts) GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1)
Ref OEM Part # Part Name
- 1630-4407A5 GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT) Comment: SERIAL 03002814-09999999
1 1630-4407A1 GEAR HOUSING ASSEMBLY (SERIAL AND UP) Comment: SERIAL 03002814-09999999
2 16-58138 STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (3 7/16")
3 16-58136 STUD, WATE RPUMP HOUSING TO GEAR HOUSING (2 3/4")
4 31-22756 BEARING, ROLLER - DRIVE SHAFT
5 17-20032 PIN, DOWEL - LOCATING
6 26-33613 SEAL, RUBBER - WATER INTAKE TUBE
7 23-86215 WASHER, NYLON - INTAKE TUBE SEAL
8 35-33425 SCREEN, WATER INTAKE
9 10-28642 SCREW, WATER INTAKE SCREEN TO GEAR HOUSING
10 12-191833 WASHER, GREASE FILLER HOLD SCREW
11 10-79953Q04 SCREW, GREASE FILLER HOLE
12 19643 WASHER, GREASE VENT HOLE SCREW
13 10-28653 SCREW, GREASE VENT HOLE
14 54641A1 SHIFT SHAFT ASSEMBLY - LOWER (LONG SHAFT)
15 53-22899 RING, RETAINING - SHIFT SHAFT
16 23-30676A1 BUSHING ASSEMBLY, SHFIT SHAFT
17 25-26802 "O" RING, SHIFT SHAFT BUSHING
18 26-30696 OIL SEAL, SHIFT SHAFT BUSHING
19 10-39149 SCREW, SHIFT SHAFT BUSHING RETAINER
20 43-98696 GEAR, PINION
21 14-30377 TAB WASHER, PINION GEAR TO DRIVE SHAFT SCREW
22 10-30376 SCREW, PINION GEAR TO DRIVE SHAFT
23 45-39077 DRIVE SHAFT (LONG SHAFT)
24 15-30527A1 SHIM, DRIVE SHAFT BALL BEARING TO BEAR HOUSING (,002-3-5-10
25 30-33076 BEARING, BALL - DRIVE SHAFT
26 53-30523 RING, RETAINING - BALL BEARING TO DRIVE SHAFT
27 15-30527A1 SHIM DRIVE SHAFT BALL BEARING TO PUMP (.002-3-5-10)
28 46-46893A3 WATER PUMP HOUSING ASEMBLY
29 25-29439 "O" RING, WATER PUMP HOUSING
30 26-30900T OIL SEAL, WATER PUMP HOUSING
31 26-33613 SEAL, WATE RINTAKE TUBE
32 32-34293 TUBE, WATER INTAKE
33 70977T INSERT, WATER PUMP HOUSING
34 28-8M0032835 KEY, IMPELLER DRIVE
35 47-89981 IMPELLER, WATER PUMP
36 46895 PLATE, FACE - WATER PUMP HOUSING TO WATER PUMP COVER
37 93224A1 WATER PUMP COVER ASSEMBLY
38 26-36558 SEAL, WATER PUMP COVER
39 23-13127 WASHER, NYLON - WATER PUMP COVER
40 26-30913 OIL SEAL ,WATER PUMP COVER
41 12-20533 WASHER, WATER PUMP COVER
42 11-826709109 NUT WATER PUMP HOUSING AND COVER STUDS
43 25-30526 RING, RUBBER - CENTRIFUGAL SLINGER (DRIVE SHAFT)
44 23-31792T SLEEVE, GUIDE - WATER INLET TUBE
45 25-48171 "O" RING, UPPER - DRIVE SHAFT
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (29 parts) GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2)
Ref OEM Part # Part Name
- 1630-4407A5 GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT) Comment: SERIAL #3002814-09999999
1 1630-4407A1 GEAR HOUSING ASSEMBLY Comment: SERIAL #3002814-09999999
46 44434 CAM SHIFT Comment: SERIAL #3002814-09999999
47 31334 FOLLOWER, SHIFT CAM
48 24-31333 SPRING, COMPRESSION - CAM FOLLOWER
49 15-30522A1 SHIM, FORWARD GEAR BALL BEARING TO GEAR HOUSING (,022-3-5-1
50 30-21889 BEARING, BALL - FORWARD GEAR
51 43-48577A3 FORWARD GEAR ASSEMBLY
52 31-22458 BEARING, ROLLER - FORWARD GEAR
53 52-47581 RATCHET, SLIDING CLUTCH
54 53-32449 RING, RETAINING - CROSS PIN
55 17-30535 PIN, CROSS - RATCHET TO PROPELLER SHAFT
56 44-47851 SHAFT, PROPELLER
57 43-48578 REVERSE GEAR ASSEMBLY
58 12-30531 WASHER, THRUST - REVERSE GEAR
59 30-21889 BEARING, BALL - REVERSE GEAR
60 15-30532A1 SHIM, THRUST WASHER TO GEAR HOUSING (.002-3-5-10)
61 25-30529 "O" RING, BEARING CARRIER
62 30541T1 BEARING CARRIER ASSEMBLY
63 31-22458 BEARING, ROLLER - BEARING CARRIER
64 26-30530 OIL SEAL, BEARING CARRIER
65 12-30528 WASHER, GEAR HOUSING COVER
66 30537 COVER, GEAR HOUSING
67 86665A1 THRUST HUB ASSEMBLY, PROPELLER SHAFT
68 86665A1 WASHER, CUPPED - THRUST HUB
69 48-47670A10 PROPELLER ASSEMBLY (3 BLADE - BRONZE ALUMINUM - 7" PITCH)
70 11-64075A1 SPACER, SPLINED - PROPELLER SHAFT
71 12-27025 WASHER, PROPELLER NUT Comment: SERIAL #2798057-02938830
72 11-8M0204653 NUT, PROPELLER
▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts) MISCELLANEOUS PARTS/ACCESSORIES
Ref OEM Part # Part Name
- 46-46893A6 RESISTANT WATER PUMP
▶PISTON AND CONNECTING ROD ASSEMBLY (9 parts) PISTON AND CONNECTING ROD ASSEMBLY
Ref OEM Part # Part Name
1 608-7395A2 CONNECTING ROD ASSEMBLY
2 10-87374 SCREW, CONNECTING ROD
3 29-26815 BEARING, NEEDLE - CRANKPIN
4 11-20061 NUT, CONNECTING ROD SCREW
5 12-31433 WASHER, NEEDLE BEARING RETAINING
6 29-31505 BEARING, NEEDLE - PISTON PIN
7 719-7391T3 PISTON/PIN ASSEMBLY
8 40-21666 LOCK RING, PISTON PIN
9 39-21665A12 RING, PISTON
▶SHIFT CONTROL LINKAGE (18 parts) SHIFT CONTROL LINKAGE
Ref OEM Part # Part Name
1 59107 HANDLE, SHIFT CONTROL Comment: SERIAL #3002714-09999999
2 12-8M0204649 WASHER, SHIFT CONTROL SHAFT
3 11-826709109 NUT, SHIFT HANDLE TO SHIFT CONTROL SHAFT
4 23-30678 BUSHING, NYLON - SHIFT CONTROL SHAFT
5 12-37828 WASHER, SHIFT CONTROL SHAFT
6 13-36206 WASHER, WAVE - SHIFT CONTROL SHAFT
7 63673 LEVER, SHIFT CONTROL (REMOTE)
8 17-99615 PIN, SHIFT ELVER TO SHIFT CONTROL SHAFT
9 39047 SHAFT, SHIFT CONTROL
10 43-30802 GEAR, SECTOR - SHIFT CONTROL SHAFT (HORIZONTAL)
11 12-8M0204649 WASHER, SHIFT CONTROL SHAFT
12 11-8267089 NUT, SCTOR GEAR TO SHIFT CONTROL SHAFT
13 24-39627 SPRING, DETENT - SHIFT CONTROL LEVER
14 39601 PLATE, DETENT SPRING
15 10-25764 SCREW, PLATE AND SPRING TO ADAPTOR PLATE
16 23-30677 BUSHING, NYLON - UPPER SHIFT SHAFT
17 54641A1 SHIFT SHAFT ASSEMBLY - LOWER (LONG SHAFT) SEE NOTE BELOW
18 43-86686A1 GEAR SECTOR - SHIFT SHAFT SEE NOTE BELOW
▶STEERING HANDLE ASSEMBLY (30 parts) STEERING HANDLE ASSEMBLY
Ref OEM Part # Part Name
- 60850A6 STEERING HANDLE ASSEMBLY, COMPLETE
1 27763 GRIP, RUBBER - STEERING HANDLE BODY
2 35909 BODY ADN SHAFT, STEERING HANDLE BODY
3 31001 INDICATOR, SPEED AND LIMIT - STEERING HANDLE
4 10-31002 SCREW, SET - SPEED AND SHIFT INDICATOR
5 10-22290 SCREW, DRIVE - INDICATOR TO STEERING HANDLE BODY
6 23-30677 BUSHING, NYLON - STEERING HANDLE TO BODY
7 49556 HANDLE, STEERING
8 49558 KNCUKLE, STEERING HANDLE
9 23-49555 BUSHING, RUBBER - STEERING HANDLE
10 23-28100 BUSHING, NYLON - STEERING HANDLE
11 43-53205 GEAR, BALL - STEERING HANDLE SHAFT
12 17-26862 PIN, BALL GEAR TO STEERING HANDLE SHAFT
13 53-53204 RING, RETAINING - BALL GEAR
14 48003 PIVOT, STEERING HANDLE TO BRACKET
15 15-48002015 SHIM, STEERING HANDLE PIVOT TO BRACKER (.015
16 10-64074 SCREW, STEERING HANDLE TO ARM BRACKER (5/8")
17 47742A1 UNIVERSAL JOINT ASSEMBLY
18 23-48005 SLEEVE, UNIVERSAL JOINT
19 43-53205 GEAR, BALL - UNIVERSAL JOINT
20 17-26862 PIN, BALL GEAR TO UNIVERSAL JOINT
21 53-53204 RING, RETAINING - BALL GEAR
22 61629A1 BRACKET, STEERING ARM
23 47743 BOOT, UNIVERSAL JOINT
24 23-47818 BUSHING, STEERING ARM BRACKET
25 24-72847 SPRING, DETENT - STEERING HANDLE
26 10-37655 SCREW, DETENT SPRING TO STEERING HANDLE
27 39070 BOOT, RUBBER - THROTTLE CONTROL SHAFT
28 10-30679 SCREW, STEERING ARM BRACKET TO SADDLE
29 11-8M0207775 NUT, STEERING ARM BRACKET FASTENING SCREW
▶THROTTLE CONTROL LINKAGE (27 parts) THROTTLE CONTROL LINKAGE
Ref OEM Part # Part Name
1 39038 SOCKET, THROTTLE CONTROL
2 23-31011 BUSHING, NYLONG - THROTTLE CONTROL SOCKET
3 43-39030 GEAR, HORIZONTAL - THROTTLE CONTROL SOCKET
4 17-24800 PIN, ROLL - GEAR TO THROTTLE CONTROL SOCKET
5 39029 HOUSING, THROTTLE CONTROL
6 10-56500 SCREW, THROTTLE CONTROL HOUSING TO CRANKCASE (1 1/4")
7 13-26992 LOCKERWASHER, THROTTLE CONTROL HOUSING SCREW
8 24-39042 SPRING, NEUTRAL SPEED LIMITER FOLLOWER
9 10-21807 SCREW, LIMITER TO CONTROL HOUSING
10 12-8M0174819 WASHER, SPEED LIMITER FOLLOWER STUD
11 23-30972 BUSHING, SPEED LIMITER FOLLOWER STUD
12 63308A1 FOLLOWER, NUTRAL SPEED LIMITER
13 11-20088 NUT, JAM - SPEED LIMITER FOLLOWER STUD
14 54-39788 CLAMP, STOP SWITCH LEAD - SPEED LIMITER FOLLOWER STUD
15 12-8M0204649 WASHER, SPEED LIMITER FOLLOWER STUD
16 11-8267139 NUT, SPEED LIMITER FOLLOWER STUD
17 32-47642 STOP NUTRAL SPEED LIMITER
18 10-28710 SCREW, NEUTRAL SPEED LIMITER STOP TO FOLLOWER (5/8")
19 12-24676 WASHER, NEUTRAL SPEED LIMITER STOP SCREW
20 43-39031 GEAR AND SHAFT, THROTTLE CONTROL
21 13-39041 WASHER, WAVE - GEAR AND SHAFT (LOWER)
22 23-30868 BUSHING, NYLON - GEAR AND SHAFT TO THROTTLE CONTROL HOUSING
23 39033A1 LEVER ASSEMBLY, THROTTLE CONTROL
24 23-26841 BUSHING, NYLON - GEAR AND SHAFT (UPPER)
25 17-22896 PIN, ROLL - THROTTLE CONTROL ELVER TO GEAR AND SHAFT
26 10-23015 SCREW, ADJUSTING - THROTTLE ADVANCE
27 11-68219 NUT, LOCK - THROTTLE ADVANCE ADJUSTING SCREW
▶TOP COWL AND STARTER ASSEMBLY (46 parts) TOP COWL AND STARTER ASSEMBLY
Ref OEM Part # Part Name
1 2123-3953A2 COWL, TOP
2 39080 BLANKET, SOUND ABSORBING-TOP COWL-TOP
3 39071 BLANKET, SOUND ABSORBING - TOP COWL
4 25-39086 GROMMET, COWL LATCH - TOP COWL
5 2128-2667A8 COVER ASSEMBLY, FRONT
6 39039 STRIP, RUBBER - FRONT COVER
7 23-39578 SPACER, FRONT COVER STUD
8 11-8267089 NUT, FRONT COVER STUD
9 63307A2 STARTER HOUSING ASSEMBLY(SERIAL #3002814 AND UP)
10 57821 GUIDE, ROPE - STARTER HOUSING
11 39043 SEAL, STARTER HOUSING TO TOP COWL
12 10-22968 SCREW, STARTER HOUSING TO CYLINDER BLOCK(1 1/4")
13 55860 PULLEY, STARTER CABLE
14 10-28789 SCREW, CABLE PULLEY TO STARTER HOUSING(3/4")
15 12-22887 WASHER, CABLE PULLEY SCREW
16 23-309772 SPACER, CABLE PULLEY
17 39084 PLATE, SEAL - TOP COWL
18 39093 SEAL, TOP COWL PLATE
19 10-8M0113176 SCREW, PLATE AND SEAL TO TOP COWL(3/8")
20 39027 SHIELD, TOP COWL - REAR
21 10-38055 SCREW, REAR SHIELD TO TOP COWL (5/8")
22 13-26996 LOCKWASHER, REAR SHIELD SCREW
23 56377 SEAL, TOP COWL (42")
24 39088A1 COWL LATCH ASSEMBLY, TOP COWL
25 24-59174 SPRING, COMPRESSION - COWL LATCH
26 17-39095 PIN, ROLL - SPRING TO COWL LATCH
27 10-69069 SCREW LATCH TO TOP COWL (3/4")
28 14-20165 TAB WASHER, SHEAVE SHAFT NUT
29 11-20166 NUT, SHEAVE SHAFT (LEFT HAND THREAD)
30 20155 RETAINER, STARTER SPRING
31 24-29340T02 SPRING STARTER REWIND
32 23-28912 BUSHING, STARTER SPRING GUIDE
33 50-93696A2 STARTER SHEAVE ASSEMBLY
34 17-22896 PIN, RETAINER - STARTER CABLE
35 13-36206 WASHER, WAVE - STARTER PAWL
36 30596 PAWL, STARTER
37 23-28919 BUSHING, NYLON - SHEAVE SHAFT SPACER
38 23-61005 SPACER, SHEAVE SHAFT
39 26179 RETAINER, SHEAVER SHAFT TO STARTER SHEAVE
40 12-35559 WASHER, SHEAVE SHAFT RETAINER
41 13-20160 WASHER, WAVE - RETAINER TENSION
42 30595 PLATE, REAINER - STARTER PAWL
43 35558 SHAFT, SHEAVE
44 50-12066Q10 STARTER CABLE ASSEMBLY
45 30782 HANDLE, STARTER CABLE
46 79470A1 RETAINER, STARTER CABLE AND HANDLE

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 110 running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.

  1. Replace water pump impeller and inspect wear plate
  2. Change engine oil and oil filter (check drain plug washer)
  3. Replace spark plugs and check ignition timing
  4. Drain and refill lower unit gear oil; inspect for water contamination
  5. Inspect fuel lines, primer bulb, and fuel filter for deterioration
  6. Check and replace sacrificial anodes (zinc or aluminum)
  7. Inspect propeller for damage; check shaft seal and cotter pin
  8. Check valve clearance (refer to service manual for specifications)
  9. Lubricate all grease points (steering, tilt tube, shift linkage)
  10. 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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