OMC 800/Cobra parts *Outdrive drawings *How to videos

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OMC electric shift outdrive repair *How to video

OMC Stringer lower gearcase electric shift clutch spring, forward and reverse coil repairs to sterndrive

  • How to repair help covers OMC sterndrive years 1972 to 1977 that have a 10 bolt swivel housing.
  • 8 Bolt years 1967-1971 are different in that they have a pump mechanism to maintain flow of oil to circulate oil to upper drive shaft bearing, pump runs of prop shaft cam in lower unit.
  • Electric shift step by step pictures of parts being removed one unit at a time.
  • Step by step OMC repair video at bottom of this page however there is no sound track.

 

By author Trish Dougherty

Gear-head rebuild shows how to remove and repair gear-head assembly. (Prop shaft bearing and oil seal retainer)

OMC clutch spring and forward gear assembly pictures shows how to remove forward or reverse clutch spring from hub.

Replacement clutch

Replacement Forward / reverse clutch

$239.15

 

OMC sterndrive
OMC sterndrive

Remove 4 flat head screws in gear head assembly and pull upward with two rods that have 1/4 inch with 20 thread per inch. Do not use the 1/4 inch 28 screws you just removed if you are in pinch use two of the bolts from the swivel housing that you should have removed first. (Warning) swivel housing work must be preformed before continuing or reverse coil wires will be damaged. The eight or ten bolts and swivel housing must be removed. The wires must be disconnected before continuing with disassembly of lower unit. The reason is that reverse shift coil wire (just one) must be pulled out of prop shaft bearing housing area so as not to damage coil.

2
2

Warning remove swivel housing section first or damage to reverse coil or wire will take place.

reverse coil
reverse coil

Pry electric shift reverse coil wire loose only after disconnecting reverse wire from swivel housing.

electric wire
electric wire

Pull electric wire through gently with fingers

snap ring
snap ring

Move reverse coil and wire to middle of the snap ring area.

 

6
6

Remove snap ring careful do not damage coil wire.

gear head assembly
gear head assembly

Insert two gear head assembly screws or 1/4-28 threaded rod to remove coil.

8
8

Pry reverse coil out with screw drivers 

9
9

Adjust screws in to pry out reverse coil.

10
10

Can often pull out holding screws by hand ninety percent of the time, that said if the gears are broken and metal filings surrounding the coil we often have to heat gear-case on the outside with torch to remove.

11 removing
11 removing

Care must be taken to not damage shift wire when removing coil

12 outdrive
12 outdrive

Remove coil from stern drive and clean. Please click on pictures 12 to 24 to continue how to do electric repair part 2