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1993 Yamaha 40ELRR 40HP 2 Stroke
I recently bought this motor used and feel already got rid off from the buyer claiming the motor is in working/function control.
Day one with the motor in the water. The motor idling high. Once I put the motor in gear and full throttle, the motor vibrating heavy, and would not go more the 7 mph.
Once I got back home, and I found the motor has one fowl spark plug, so I changed. Also checked compression on all three cylinders and all three cylinders came out close and similar on the numbers. All check all three throttle port doors and they were pretty clean and minimal carb issue.
Day two with the motor back in the water. The motor idle normal with very minimal vibration. Once put back in gear, vibration is heavy and still would not go more then 7 mph.
Look like water pump is fine consider water is pump to the cowling and being released.??
What else should I look for?
any help and suggestion would be great
Thanks
I recently bought this motor used and feel already got rid off from the buyer claiming the motor is in working/function control.
Day one with the motor in the water. The motor idling high. Once I put the motor in gear and full throttle, the motor vibrating heavy, and would not go more the 7 mph.
Once I got back home, and I found the motor has one fowl spark plug, so I changed. Also checked compression on all three cylinders and all three cylinders came out close and similar on the numbers. All check all three throttle port doors and they were pretty clean and minimal carb issue.
Day two with the motor back in the water. The motor idle normal with very minimal vibration. Once put back in gear, vibration is heavy and still would not go more then 7 mph.
Look like water pump is fine consider water is pump to the cowling and being released.??
What else should I look for?
any help and suggestion would be great
Thanks
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