Evinrude / Johnson outboard parts drawings * How to videos

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Johnson outboard parts help identifying lower unit

V4 Crossflow 90 degree powerhead 2 stroke outboard years 1990, 1991, 1992, 1993 and 1994 for 100 hp motors 3.5 inch standard bore pistons and over size .020, .030 and .040

By author Trish Dougherty

Gearcase identification video

Gearcase identification video

Click on outboard lower unit parts drawing for more details & larger photo,s
Information and physical characteristic of parts drawings
2-3 Cylinder loop charge large hub
2-3 Cylinder loop charge large hub

2 & 3 cylinder loop charged large gearcase identification for lower unit years 1975 to 2006

Physical characteristics of this part is 17 and 7/16 inches tall with straight at the trailing end of the gear housing and the fin.
Pointed at the trailing end of the cavitation plate.
Six holes above the cavitation plate.
Internal water intake screens (three holes) and no speedo pitot.
Large 4-1/16 " hub gearcase years 1975 to 2006.
2-3 Cylinder loopcharge small gearcase 1975 - 1988
2-3 Cylinder loopcharge small gearcase 1975 - 1988

2-3 cylinder loop charged small gearcase identification for old style years 1975 to 1988

2 & 3 cylinder loop charged small gearcase identification for old style lower unit years 1975 to 1988

Physical characteristics of this part is 15 1/2 inches tall with straight at the trailing end of the gear housing and the fin pointed at the trailing end of the cavitation plate.
Six holes above the cavitation plate with internal water intake screens (four holes) and no speedo pilot hole.
Small gearcase years 1975 to 1988.
2-3 Cylinder loopcharge small gearcase 1989-2005
2-3 Cylinder loopcharge small gearcase 1989-2005

2-3 cylinder loop charged small gearcase identification for newer style lower unit years 1989 to 2005

2 & 3 Cylinder loop charged small gearcase identification for newer style lower unit years 1989 to 2005

Physical characteristics 15 3/4 inches tall.
Straight at the trailing end of the gear housing and the fin.
Pointed at the trailing end of the cavitation plate.
Six holes above the cavitation plate.
External water intake screens includes speedo pilot.
Small hub 3-7/8" gearcase years 1989 to 2005
Johnson V4 90 1978-1998 small gearcase drawing
Johnson V4 90 1978-1998 small gearcase drawing

V4 90 degree small gearcase identification drawing for lower unit years 1978 to 1998

Physical characteristics 18 3/16 inches tall
Straight at the trailing end of the gear housing and the fin
Pointed at the trailing end of the cavitation plate
Six holes above the cavitation plate
Internal water intake screens (four holes)
No pitot.
Small leg 4-1/8" hub gearcase drawing
V4 60 1995-2006 small gearcase identification
V4 60 1995-2006 small gearcase identification

V4 60 degree small gearcase identification for years 1995 to 2006

V4 60 degree small gearcase identification for lower unit years 1995 to 2006

Physical characteristics of this part is 19 1/16 inches tall.
Curved at the trailing end of the gear housing and the fin.
Flat at the trailing end of the cavitation plate.
Two slots above the cavitation plate.
External water intake screens.
Large gearcase type M V4 V6-2002 - 2006
Large gearcase type M V4 V6-2002 - 2006

V4 and V6 large gearcase identification for years 2002 to 2006

Evinrude / Johnson type "M" V4 and V6 large gearcase lower unit identification for years 2002 to 2006

Physical characteristics of this part is 19 3/16 inches tall with 5-1/16 inch rear hub
Curved at the trailing end of the gear housing and the fin
Flat at the trailing end of the cavitation plate
Three slots above the cavitation plate
External water intake screens
Includes speedo pilot
Type O V4 V6 large gearcase 1979 - 2006
Type O V4 V6 large gearcase 1979 - 2006

Type "O" V4 and V6 large gearcase identification for years 1979 to 2006

Type "O" V4 and V6 large gearcase lower unit identification for years 1979 to 2006

Physical characteristics of this part is 19 3/16 inches tall with 4-5/8 inch rear hub
Straight at the trailing end of the gear housing and the fin
Pointed at the trailing end of the cavitation plate
Two slots above the cavitation plate
External water intake screens