Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 28Get this manual
MAINTENANCE
Storage Preparation
The major consideration in preparing your outboard for storage is to protect it from rustcorrosionand damage caused by freezing of trapped waterThe following storage procedures should be followed to prepare you outboard for out-ofseason storage or prolonged storage (two month or longer)
ACAUTION
Never start or run your outboard (even momentarily) without water circulating through the cooling water intake in the gear case to prevent damage to the water pump (running dry) or overheating of the engine