Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 253Get this manual

POWERHEAD
5If necessary, clean crankshaft surfaces with crocus cloth

aCrankshaft JournalsCrocus ClothWork Cloth "Back-and-Forth"

WARNING

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives