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Default '71 model Johnson 20hp outboard jumping out of forward gear momentarily

david wrote:
before i pull it apart.


"basskisser" wrote:
Sounds like the rubber hub for the prop is spun. They get worn out.


I vote to check this first.
Just borrow a prop. Or buy a used one for a spare and run it. It might
not be the problem but, if you're serious about the "before I pull it
apart" part, eliminate this possibility first.

Rick
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Default '71 model Johnson 20hp outboard jumping out of forward gear momentarily


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...
david wrote:
before i pull it apart.


"basskisser" wrote:
Sounds like the rubber hub for the prop is spun. They get worn out.


I vote to check this first.
Just borrow a prop. Or buy a used one for a spare and run it. It might
not be the problem but, if you're serious about the "before I pull it
apart" part, eliminate this possibility first.

Rick


Easiest way to check the hub, is take a Sharpie and mark the inner and out
with a line. Run the prop and see if the lines still line up.


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Default '71 model Johnson 20hp outboard jumping out of forward gear momentarily


Thanks for the suggestions so far... havent had any time to look at it
since first posting but i will try to follow some of the advice later
this week. Think i will start with the prop, as its the simplest thing,
then look at the adjustment of the gear lever (the cable which actuates
the lever is fine, and the hole it goes into on the lever is not
elongated at all), then look internally if that doesn't produce
results. Ive got a feeling that its either the dog clutch or the gears
not meshing fully... just by the way it suddenly jumps in and out, it
is quite a sudden, harsh action... although ill look at the propr first
i would imagine that this would be a much softer action if it was
slipping then re-gripping on the rubber boot.

Keep the advice coming and ill post any developments when they
happen...

Thanks Dave.

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