1988yamaha225
New member
I am workin on a 1991 Yamaha 200hp outboard motor. 2 stroke. pbs oil system, The oil tanks were removed and now is being premixed. Always ran fine when motor was transfered from one boat to another no its in safe mode and hit revlimiter at around 2000-3000 rpm. i am stumped been through almost everything. at the bottom of the computer on the left there is a plug that used to go to the oil float assembly on the main oil tank on motor now thats disconnected i know that when the oil is low it sounds alram and reduces rpm but since the tank is gone....? i know also a overheat sensor will cause reduction in rpm how do i properly by pass this oil system to trick computer? how to i rule out the possible bad overheat sensor?