Yamaha 115-225 HP Outboards Service Manual, Page 183Get this manual

_ Trim sender adjustment Fully tilt up the outboard motorLoosen two bolts securing the trim sendor until it moves slightly
AWARNING
Be sure to support the engine with the tiltsupport lever during the bolts loosening to prevent the engine from tilting down due to lack of oil pressureOFF START

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