Johnson & Evinrude Outboard 3-Cylinder 1978-2001 50-70 HP Powerhead Parts Diagrams

Browse our comprehensive catalog of Johnson & Evinrude 3-cylinder outboard powerhead parts at OBParts. From complete powerhead rebuild kits to precise internal parts diagrams for 1978-2001 50–70 HP models, our parts supports both engine restoration enthusiasts and marine professionals. Find crankshaft seal kits, connecting rods, gasket kits, rod bearings, pistons, head o-ring kits, and more. Our visual powerhead diagrams make ordering swift and confident.

The diagram above is a Johnson & Evinrude 3 Cylinder 50-70 HP Powerhead Assembly from 1978-2001. The following parts correspond to the numbers on this diagram:

1. Thermostat
• 60 HP (1986-1988) or 70 HP (1974-1985)
• 60 HP (1989-1992) or 70 HP (1986-1992)
• 60 or 70 HP (1993-2003)
2. Head Gasket
• Small Bore, 60 HP (1986-1988) or 70 HP (1978-1985)
• Big Bore, 60 HP (1989-2003) or 70 HP (1986-2003)

We recommend the following kits for this powerhead:

• Gasket Kit
• Small Bore, 60 HP (1986-1988) or 70 HP (1978-1985)
• Big Bore, 60 HP (1989-2003) or 70 HP (1986-2003)
• Carburetor Kit
• Fuel Pump Kit
• (1982-1987)
• (1988-1990)

The diagram above is for a Johnson/Evinrude 3 Cylinder 50-70 HP Crankshaft Assembly from 1978-2001. The following parts correspond to the numbers on this diagram:

1. Rod Bearings
2. Wrist Pin Bearings
3. Upper Crank Bearing
4. Lower Crank Bearing
5. Center Main Bearing with Sleeve
6. Rod Bolts

We recommend the following items for this crankshaft assembly:

• Crankshaft Seal Kit
• (1978-1992)
• (1993-2003)
• Piston
• Trim Motor
• 2-Wire (1978-1990)
• 2-Wire Fastrak with Short Leads
• Starter
• Starter Solenoid
• Trim Relay