1988 thundercraft 2.5L have no fw or reverse prop wont spin

hebe818

Recruit
Joined
Jul 16, 2009
Messages
2
hi was wondering if there is anyone out there that can help me. i took me family out on the lake today. boat was running great was only running at about 3500rpms when the boat acted like it hit neutral. the boat rev out and came to a stop. i tried to put it in fw again and just acted like it was in neutral same with reverse. i checked the shift cable when we pulled it out of the water (after about a mile of rowing)seems to be working fine. (engine off of course) i then shifted it in to fw and spun the prop to see if it would engage. seems like the clutch grabs but with a little force i could still turn it. same with reverse. can anyone help??? thanks
 

dubs283

Vice Admiral
Joined
Jul 27, 2005
Messages
5,346
Re: 1988 thundercraft 2.5L have no fw or reverse prop wont spin

what make/model engine and drive?

just off the bat: could be broken shift cable, spun hub in prop, or even worse shot coupler
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,507
Re: 1988 thundercraft 2.5L have no fw or reverse prop wont spin

WITH THE KEY IN YOUR POCKET, shift into fwd, have someone watch the shaft where it enters the motor while someone turns the prop counterclockwise.
prop turns, shaft turns= engine coupler
prop turns, shaft doesent= drive issue
 

hebe818

Recruit
Joined
Jul 16, 2009
Messages
2
Re: 1988 thundercraft 2.5L have no fw or reverse prop wont spin

it a alpha one gen one outdrive. thanks for you help.
i did what ya said and i know its the out drive now. do you know if its a lower drive problem? what would make it slip?
 
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