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25 hp Merc. Questions
Hello everyone, I have a 25 hp 4 strk. Merc. S/N: 0T086044. I am replacing the head gasket. Can anyone tell me the head bolt torque spec. The flywheel nut spec. Also the sequence for the head bolts would be nice. Do I need to adjust valve lash on this motor and if so what should it be? Thank You for all your help!
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Mercury 3L/4 Stroke/Verado Moderator
You will need to obtain a Factory Service Manual to perform these types of repairs. The correct Manual Part Number for this engine is: 854785R2
You can purchase one through our Parts Department, any Mercury Dealer, or direct from Mercury Marine.