Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 176Get this manual

DIRECT FUEL INJECTION
Air Plenum Installation
Secure plenum to crankcase with 12 boltsTorque bolts to 100 lbin(11.5 Nm)in sequence shown

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