Yamaha 90-HP Won't Shut Off
Posted: Mon May 30, 2022 11:08 am
Q1: how can intermittent electrical problems related to the ignition key switch and trim switch for my Yamaha 90-HP two-stroke-power-cycle engine be repaired?
BACK STORY
On my MONTAUK 17, the Yamaha 90-HP two-stroke-power-cycle engine starts easily, but in the past on rare occasions the engine will not shut off when the ignition key is turned [to OFF from RUN position] or the [engine safety shut off switch] is pulled. Also in the past on rare occasions the engine TRIM switch on the throttle handle of the remote control does not operate the power trim. In the past if the ignition key switch is operated repeatedly between RUN and OFF, these problems resolve themselves.
At the present, the engine will not shut off with the ignition key switch or the engine safety shut-off switch. The trim switch works. [Some element of the electrical circuit referred to only as] connections appear intact and no corrosion is visible. In regard to electrical circuitry I am a novice.
BACK STORY
On my MONTAUK 17, the Yamaha 90-HP two-stroke-power-cycle engine starts easily, but in the past on rare occasions the engine will not shut off when the ignition key is turned [to OFF from RUN position] or the [engine safety shut off switch] is pulled. Also in the past on rare occasions the engine TRIM switch on the throttle handle of the remote control does not operate the power trim. In the past if the ignition key switch is operated repeatedly between RUN and OFF, these problems resolve themselves.
At the present, the engine will not shut off with the ignition key switch or the engine safety shut-off switch. The trim switch works. [Some element of the electrical circuit referred to only as] connections appear intact and no corrosion is visible. In regard to electrical circuitry I am a novice.