1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 189Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 189

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STARTING SYSTEM
Checking Pinion Clearance
Pinion clearance must be checked after reassembly of starter motor1 Disconnect brush lead from solenoid switch and insulate it carefully