MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
This oil injection system. Someone has cut the wires and added some wiringWiring diagram for what?
I’m sorry a 1987 instead of a 1988. The 87 oil level sensor looks different than the 1987What is the engine ID?
What country are you in?
Yamaha USA did not offer outboard motors here in the US until 1984.
See post #7.