2004 Suzuki/Johnson 90hp 25 inch shaft

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
I am servicing twin 90hp Suzukis with 525 hours, will post a report of my findings when finished with service.<br /><br /> Engine 1 525 hrs, engine 2 560 hrs. Engine had ran 4000 rpms for over half of the hours. Valve adjustment ok, compression ok, spark ok, engine and gear oil had about 150 hours and looked ok. Changed engine oil, filter, and gear oil. Orignal sparkplugs changed due to compression blowby, plugs could have lasted to 750 hrs. The 4 zinks in engine block almost gone, zink on transom bracket almost gone, zink on tilt/trim ok. Trim sender on port engine defective. Port engine has had problems with tilt/trim relay, problem was low voltage (bad connection). Replaced waterpump. At about 1000 hrs will replace water pump housing. No codes in engine icm.
 
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