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Outboard boat motor won't trim / tilt.?
I have a 1991 Astro bass boat with a Mercury Blackmax 150 outboard. All was fine in 2012. I moved it from Texas to Arizona and boat has sat for almost 2 years. I had planned to go out today but the motor will not trim or tilt. Batteries are fully charged. When I use the trim switch (on motor, on throttle lever, and switch on bow) I hear the solenoid click but motor is not engaging. I have used the manual pressure release and moved the motor up and down by hand. Cyclinders are not leaking, no air in the lines, all fuses appear good... What else can I do to troubleshoot this issue? I understand combustion engines on cars, I am puzzled by this boat motor. Please be detailed in your answers. Thanks in advance for all helpful answers.
4 Answers
- 7 years agoFavorite Answer
That works off a 12v electric over hydraulic system, 9 times out of 10 the electric motor takes a crap. Expensive fix unfortunately, But a correct diagnosis is needed before throwing any parts at it, I'd use what's called a Power Probe to determine if its the motor or solenoid, this would only take me a few minutes to isolate the problem, unfortunately the tool is not cheap and you need to know how to use it, and obviously you'd need to know the system your working on, Probably why I make the money I do, Another way to do it is with a heavy gage jumper wire, just make sure your ready for an electrical fire, simply jump from the pos side of the battery to the motor side of the solenoid, if nothing we know its the motor, if the motor turns we know its the solenoid, if the jumper wire gets hot you might want to disconnect fast, still tells me the motor is bad though, at least with the Power Probe the circuit breaker pops and I don't get burnt fingers or risk a fire,
- dave1102Lv 77 years ago
I don't think this has anything to do with the boat's motor. If it has sat idle for two years, it could be something as simple as needing to be lubricated as the two "shocks' that control the motor going up and down require greasing. Just a possibility.