Evinrude 25 HP 1977 Model 25702 25703 25752 25753

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

18-3002 Impeller

Impeller / Water Pump should be replaced every year or two.  Does not include impeller plate which does not need to be replaced every time.

18-3103 Impeller Plate

18-3203 Marine Impeller Repair Kit

Contains 18-3002 Impeller and 18-3103 Plate.

18-3377 Water Pump Repair Kit without Housing 

• The Sierra 18-3377 Water Pump Kit without Housing is interchangeable with the following: Evinrude/Johnson 0382468. Contains one each: 18-3002 Impeller, 18-3103 Impeller Plate, 18-3326 Impeller Key, 18-3329 Grommet. Each Sierra product meets or exceeds the original equipment part it replaces.
• Sierra Water Pump Kit without Housing
• Contains one each: 18-3002 Impeller, 18-3103 Impeller Plate, 18-3326 Impeller Key, 18-3329 Grommet
• Sierra part number: 18-3377
• Interchangeable with the following: Evinrude/Johnson 0382468

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

10-28 HP Aluminum Propellers for Johnson Evinrude (Pin Drive) Split Gearcase

• For Evinrude Johnson OMC
• 10 HP  1951-1957
• 15 HP  1953-1956
• 18 HP  1957-1973
• 20 HP  1969-1973
• 25 HP  1969-1977
• 28 HP  1964
• Pin Drive, Split Gearcase

Hard to find on Amazon, but they have them on eBay.

10-28 HP Aluminum Pin Drive, Split Gearcase

Return to Propellers:  

18-2093 Drive Shaft Oil Seal

• For: 20 - 35 HP (1977-1995) seal for propshaft 18-2026, driveshaft 18-2033, upper crankcase 18-8351
• Size: 1.110, OD: 1.570, Width: 0.370

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

18-5655 Starter Drive Assembly

18-5697 Starter Brush and Spring Set

• Sierra Brush and Spring Set
• Meets or exceeds the original equipment quality
• Sierra part number: 18-5697
• Interchangeable with the following: Arco BK900, Chrysler F15164, 74384, Evinrude/Johnson 385952, Mercury 75384, 57390, 63292, 753841, 898265016, Mercury 75384

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

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

18-5808 STARTER SOLENOID

18-7042 Siearra Carb Kit

Note: 25, 35 HP 1995-Up Except 3 Cylinder Models

18-7093 Sierra Carburetor Needle and Seat

18-7210 Sierra Carburetor Float

18-7222 Sierra Carb Kit With Float

18-7352 Fuel Pump

• Sierra Fuel Pump
• Uses Kit: 18-7821
• Meets or exceeds the original equipment quality
• Sierra part number: 18-7352
• Interchangeable with the following: Evinrude/Johnson 385781, 388268, 394543, 395713, 382354, 398387, 438556, 432451, 398338, 433387, Mallory 9-35352

18-7820 Fuel Pump Kit 

• Sierra Fuel Pump Kit
• Contains 18-0850 Fuel Pump Gasket, 18-2900 Cap to Fuel Pump Gasket
• Sierra part number: 18-7820
• Interchangeable with the following: GLM 40820, Evinrude/Johnson 393103, Mallory 9-37702

438556 Evinrude Johnson OMC BRP Replacement Fuel Pump 20-140 HP

It of often cheaper to replace the entire fuel pump than to buy a repair kit.

18-2954 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

18-1378 Rod Bearing Complete

Johnson/Evinrude Rod Bearing for (18-135HP) Outboard

18-1391 Upper/Lower Crank Bearing

18-3911 Piston Rings  .20 OS

• 3.020 / .020
• For 2&3 Cyl, Johnson/Evinrude 2 /3 HP
• Works with 18-4114 Piston

18-4040 Marine Needle Bearing

18-4329 Marine Crankshaft Seal Kit

5006654 Standard Piston Kit

5006663 Piston Kit  .030 Oversize

Sierra 18-3910 Piston Ring Set - Standard Bore

• For Johnson/Evinrude 2 Cyl 25-35 HP mothrs with 3.000 inch bore.

Sierra 18-3912 Piston Rings - Bore 3.030/.030

For Johnson/Evinrude 2/3 Cylinder, 25-35 HP Motors

18-2684 Marine Lower Unit Seal Kit

Seal Kit Contents:

• Part #      Desc.              O.E.#    Qty.
• 18-0882  Shift Rod Gasket 304764  1
• 18-2032  Oil Seal 321788 1
• 18-4248  Washer 311598 2
• 18-7100  O-Ring 301877 1
• 18-7120  O-Ring 307853 1
• 18-2031  Oil Seal 321787 1
• 18-2534  Spaghetti Seal 309044 1

18-7100 O-Ring

ID: 0.245, Width: 0.155

18-7105 Marine O-Ring

ID: 0.750, Width 0.065

18-7109 Marine O-Ring

ID: 0.214, Width: 0.048

18-7111 O-Ring

ID: 0.197, Width 0.113

18-7116 O-Ring

ID: 0.360, Width, 0.100

18-7120 O-Ring

ID: 0.215, Width: 0.065

18-7174 Marine O-Ring

ID: 0.620, Width: 1.100

18-2005 Oil Seal

Size: 0.625, OD: 1.128, Width: 0.250

18-2032 Oil Seal

Size: 0.500, OD: 1.000, Width: 0.188

18-4904 Starter Handle and Rope for Johnson/Evinrude

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

18-5629 Starter

Fits OMC 18-40 11 Tooth Drive Gear

Starter For OMC Johnson Evinrude Marine 20 25 28 30 35 40 HP

18-6501 Rewind Spring for Johnson/Evinrude

• Sierra Rewind Spring
• Meets or exceeds the original equipment quality
• Sierra part number: 18-6501
• Interchangeable with the following: Evinrude/Johnson 395460, 307573
• Fit specific, check part numbers to ensure proper fit

18-6513 Starter Pawl, Pack of 3