Hi,
I have a problem which my outboard mechanic has been unable to resolve and I'm hoping someone on this forum has come across the problem and can offer some advice.
My outboard is a 1993 Yamaha 115hp CETO 2 stroke.
The last few times I've been out on the water my overheat buzzer has sounded. Last trip, the buzzer sounded after running for 10 minutes at approx 3000rpm. At that point I normally idle the motor and after approx a minute the buzzer goes off and I continue my trip.
To date the following work has been completed on the outboard:
100 hr service which included new impeller -> problem occurred on next outing.
2nd attempt to resolve included new thermostats, grommet, clean out all salt build up and associated gaskets > again problem occurred on next outing.
3rd attempt to resolve included a new water pump housing when we noticed an unusual amount of water leaking from lower unit (refer to picture) > new water pump housing didn't resolve the lower unit leak so I don't have any confidence that the problem is resolved......I'll most likely try it over the next few days and see what happens.
Please note the leak starts 10 seconds after the motor is started and the motor has noticeable steam from the exhaust after the engine warms up.
Hopefully someone can confirm that the leak is unusual and offer some advice. Thanks in advance.
Regards,
Mark
I have a problem which my outboard mechanic has been unable to resolve and I'm hoping someone on this forum has come across the problem and can offer some advice.
My outboard is a 1993 Yamaha 115hp CETO 2 stroke.
The last few times I've been out on the water my overheat buzzer has sounded. Last trip, the buzzer sounded after running for 10 minutes at approx 3000rpm. At that point I normally idle the motor and after approx a minute the buzzer goes off and I continue my trip.
To date the following work has been completed on the outboard:
100 hr service which included new impeller -> problem occurred on next outing.
2nd attempt to resolve included new thermostats, grommet, clean out all salt build up and associated gaskets > again problem occurred on next outing.
3rd attempt to resolve included a new water pump housing when we noticed an unusual amount of water leaking from lower unit (refer to picture) > new water pump housing didn't resolve the lower unit leak so I don't have any confidence that the problem is resolved......I'll most likely try it over the next few days and see what happens.
Please note the leak starts 10 seconds after the motor is started and the motor has noticeable steam from the exhaust after the engine warms up.
Hopefully someone can confirm that the leak is unusual and offer some advice. Thanks in advance.
Regards,
Mark
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