Johnson 9.9 HP 1978 Model 10E78, 10EL78, 10R78, 10RL78, 10SEL78

Clymer - 1973-1990  EVINRUDE/JOHNSON OUTBOARD 2-40 HP SHOP SERVICE MANUAL B732

• Covers 2 - 40 HP 2-Stroke
• 1973-1990
• Outboard Shop Manual

SELOC - Johnson/Evinrude Outboards 1973-89 Repair Manual #1302

• Covers all 1.25-60 Hp, 1 and 2-cylinder, 2-stroke models.
• 1973-1989
• Repair Manual

18-3050 Sierra Impeller

18-3178 Impeller Wear Plate

18-3179 Water Pump Cup

18-3180 Water Pump Housing

 18-3327 Water Pump Repair Kit with Housing

 18-3400 Water Pump Repair Kit Without Housing

• Sierra Water Pump Kit Without Housing
• Contains: 18-2025 Oil Seal, 18-2392 Grommet, 18-3050 Impeller, 18-3178 Wear Plate, 18-3179 Water Pump Cup, 18-3326 Impeller Key, 18-3329 Grommet, 18-3369 Bolts, 18-7116 O-Ring, 18-7139 O-Ring
• Sierra part number: 18-3400
• Interchangeable with the following: GLM 12251, Evinrude/Johnson 0391698, 03994711, Mallory 9-48220

18-3543 Marine Thermostat

• 143 deg farenheigt

18-3674 Thermostat Kit

• The Sierra 18-3674 Thermostat Kit is interchangeable with the following: GLM 13280. Contains: 18-1219 Grommet Gasket, 18-0182 Thermostat Gasket, 18-3135 Stainless Steel Bolt, 18-2546 Thermostat Gasket, 18-3567 Rubber Valve, 18-3562 Valve Cup, 18-1243 Valve Spring, 18-3563 Poppet Relief Valve, 18-3565 Retainer, 18-3543 Thermostat.
• Sierra Thermostat Kit
• 18-3543 Thermostat Included
• Sierra part number: 18-3674
• Interchangeable with the following: GLM 13280

18-3706 PROP NUT

18-3744 Marine Cotter Pin

3/32" x 3/4"

18-8304 Oil Seal

• Sierra Oil Seal
• Meets or exceeds the original equipment quality
• Sierra part number: 18-8304
• Interchangeable with the following: Evinrude/Johnson 321830
• O.D.: 31.8 mm; Shaft Size: 20.37 mm; Width: 6.35 mm

307949 Evinrude Johnson Prop Shear Pin, Propeller Drive Pin

• For Johnson Evinrude with Pin Drive Propellers
• 6 HP  1966-1979
• 9.5 HP  1964-1973
• 9.9 HP  1978-1979
• 10 HP  1960-1963
• 18 HP  1960-1963
• 20 HP  1958-1959
• 25 HP  1973-1978
•  
• Sacrificial Part Designed to Break
• Helps prevent, or at least limit damage to your motor and prop if you hit something.
• You should have a few spares.
• Don't use the wrong, or make your shear pin from the wrong material!

Other Evinrude Johnson Prop Shear Pins, and Propeller Drive Pins

8, 9.9-15 Aluminum Propellers for Johnson Evinrude  (13 Spline & Thru Hub Exhaust)

• For Evinrude Johnson OMC BRP
• 8 HP 4-Stroke  1996-2005
• 9.9 - 15 HP  1974 - 2005
• 8, 9.5, 9.9/15 HP (4 Stroke) 1995 & Newer
• 13 Spline & Thru-Hub Exhaust

You probably won't find them on Amazon, but they have them on eBay.

13 Spline & Thru-Hub Exhaust Aluminum

Return to Propellers:

Sierra International 18-5709 Marine Rectifier for Johnson/Evinrude Outboard Motor

173692 Regulator Rectifier 4 Wires for Johnson Evinrude 9.9-60 HP

396514 Carburetor Float and Arm Assembly

0388685 Replacement Fuel Pump

For $15, you can't mess around with rebuilding them anymore!

18-7094 Carburetor Needle and Seat

18-7223 Sierra Carb Kit

18-7823 Fuel Pump Kit

18-4306 Powerhead Gasket Set

• Sierra Powerhead Gasket Set
• Sierra part number: 18-4355
• Interchangeable with the following: GLM 39330, Mercury 27-78028A78, 27-55306A75, 27-55306A74, 27-55306A73, 27-55306A72

Gasket Set Contents:

• 18-0850 Fuel Pump Mtg. Gasket 303615      1
• 18-0122 Outer Leaf Plate Gasket 325260       1
• 18-0961 Carburetor to Intake Manifold Gasket 318932     1
• 18-0967 By-Pass Cover Gasket 319332       1
• 18-0112 Powerhead Mtg. Gasket 324717     1
• 18-0959 Inner Leaf Plate Gasket 318924      1
• 18-2907 Adapter Housing Gasket 325721      1
• 18-2905 Water Cover Gasket 329920            1
• 18-2853 Exhaust Cover Gasket 318925         2
• 18-2963 Head Gasket 330818                       1
• 18-2879 Filter Cap to Pump Gasket 331363, 338876   1

18-2963 Head Gasket

18-5176 Ignition Coil

18-5758 Power Pack

Champion (5931) Stainless Steel Marine Spark Plug

• Unique anti-fouling design
• Engineered to exceed OE designs
• Maximum durability
• Designed for easy starting
• Gap 0.03

Champion RL82C, QL82C, BR7HS (874M) Marine

• Johnson/Evinrude Gap 0.03

Also see: Champion (5931) Stainless Steel Marine Spark Plug

Mercury Outboard

• 110 HP  1969-1967 1100     0.03
• 95 HP  1969-1967 950    0.03
• 65 HP  1969-1967  650S    0.03
• 50 HP  1969-1967  500M     0.03
• 50 HP  1969-1967  500S     0.03
• 35 HP  1969-1967  350     0.03
• 20 HP  1969-1967  110     0.03
• 20 HP  1969-1967  200     0.03
• 11 HP  1969-1967  110    0.03
• 11 HP  1969-1967  200     0.03

Sierra .030 OS Bore Inline Piston Rings 18-3933

• 2 Cyl,  Johnson/Evinrude
• 2.218/.030

Sierra 18-3931 Piston Ring Set

• The Sierra 18-3931 Piston Ring Set is interchangeable with the following: GLM 23710, Evinrude/Johnson 386279, Mallory 9-54404, Wiseco 2188KD. Each Sierra product meets or exceeds the original equipment part it replaces.
• Sierra Piston Ring Set
• Bore size: 2.188/Std
• Sierra part number: 18-3931
• Interchangeable with the following: GLM 23710, Evinrude/Johnson 386279, Mallory 9-54404, Wiseco 2188KD

Sierra 18-4061 Piston Kit - Evinrude/Johnson

• Sierra Piston Kit
• Bore Size; 2.188/Std
• Sierra part number: 18-4061
• Interchangeable with the following: Evinrude/Johnson 387660, 361526
• Fit specific, check part numbers to ensure proper fit
• 9.9/15 HP 1974-1980

Sierra 18-4062 Piston Kit - Evinrude/Johnson

• For 9.9/15 HP
• 1974-1980
• 2 Cylinder
• 2.218 / .030

Sierra Piston Kit #18-4106

18-2656 Marine Lower Unit Seal Kit

Seal Kit Contents:

Part #      Desc.                 O.E. #   Qty.

• 18-0189  Shift Rod Washer 321738   1
• 18-2025  Oil Seal              318972   1
• 18-2028  Oil Seal             321480    2
• 18-2029  Oil Seal              321481   2
• 18-4248  Washer             311598    2
• 18-7100  O-Ring              301877     1
• 18-7104  O-Ring               308627     1
• 18-7120  O-Ring               307853, 322598   1
• 18-7139  O-Ring                319085    1
• 18-7145  O-Ring                 333572   2

18-7100 O-Ring

ID: 0.245, Width: 0.155

18-7104 Marine O-Ring

ID: 2.210, Width: 0.135

18-7111 O-Ring

ID: 0.197, Width 0.113

18-7116 O-Ring

ID: 0.360, Width, 0.100

18-7139 O-Ring

ID: 1.080, Width: 0.210

18-7168 Marine O-Ring

ID: 0.370, Width: 0.065

18-0542 Oil Seal

• OD: 1.253", Shaft: 0.750", Width: 0.186"

18-2028 Marine Oil Seal for OMC

Size: 0.500, OD: 1.250, Width: 0.188

18-2029 Marine Oil Seal for OMC

Size: 0.687, OD: 1.250, Width: 0.250

18-1505 Starter Gear

• Sierra Starter Gear
• Meets or exceeds the original equipment quality
• Sierra part number: 18-1505
• Interchangeable with the following: Evinrude/Johnson 318940
• 9.9 - 15 HP

18-4904 Starter Handle and Rope for Johnson/Evinrude

• Sierra Starter Handle and Rope Kit
• Rope size: #4.5
• Sierra part number: 18-4904

763454 Starter Motor

• Sierra Outboard Starter
• Fits: 9.9 and 15 HP Models

18-6503 Recoil Starter Rewind Spring

• Sierra Prop Spacer
• Meets or exceeds the original equipment quality
• Sierra part number: 18-4232
• Interchangeable with the following: GLM 22260, Evinrude/Johnson 323943
• Fit specific, check part numbers to ensure proper fit