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2002 25hp 4 stroke no tell-tale output

farnham1

New member
I have ordered service manual but wondered if anyone has a checklist of possible causes/what to look for, I have it on stand nowbut wanted to try DIY before taking to shop - motor started and ran fine first time out this year. second time no discharge and high pitched warning signal came on no lights went on -
Thanks
 
You have a cooling system problem. Welcome to the world of the educated guess. It could be any of the following:

Water pump kit replacement

Head gasket replacement

Thermostat replacement

Cracked block

Not running the engine in the water(sufficient water)...Many people do not get a good seal with ear muff flushers and some people try running the engine in too small of a bucket of water(exhaust gas gets sucked in rather than water).
 
Thanks, T - guru
I found a local very experienced tech --taking it to him tonight since guessing is not
best -- to best of my knowledge , no or low water has not been an issue so hoping for the best or at least not the worst
 
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