I have purchased Yamaha, 2007, F20ESH, 20hp, 4 stroke, short shaft, electric starter. S# 6AHKS100?... along with tachometer/hour combo meter p/n-ENG-METER-4C-02.
After braking in at 2000RPM and 3000RPM, I have increased speed to around 5500 RPM and got noisy coming from upper part of motor, apparently close to rear-left. It sounds DING, DING?.two, three times p/second, non-stopping. If speed is increased the DINGING frequency also increases. If speed is reduced below 5500 DINGING disappears. There is no DINGING in neutral at any RPM, and motor runs very quiet below 5500 RPM.
Yamaha Customer Relation told me that it is abnormal, and no any kind of knocking or noisy different from working engine sound should be heard. Overrev protection does not create any knocking, and F20ESH engine has no alarm. They advised to see Yamaha dealer.
I was running my boat with dealer?s mechanic, today. He confirmed the DINGING but didn?t know what it is. Just checked spark plugs (normal), and told me to run motor for remaining 7 out of 10 braking in hours. If dinging continue he will run test with test prop. Well,.. I was not happy with that conclusion.
After about 5hrs of braking in, dinging became knocking. I have changed gas brand to Shell 89 - no help. I am just about to do 10 hrs service.
Does any one have the same engine, and what is your experience at 5500 rpm? Any similar DINGING/KNOCKING? It is my first boat, and first outboard. I have 8 pitch prop. What should I do? Thanks for advice in advance.
After braking in at 2000RPM and 3000RPM, I have increased speed to around 5500 RPM and got noisy coming from upper part of motor, apparently close to rear-left. It sounds DING, DING?.two, three times p/second, non-stopping. If speed is increased the DINGING frequency also increases. If speed is reduced below 5500 DINGING disappears. There is no DINGING in neutral at any RPM, and motor runs very quiet below 5500 RPM.
Yamaha Customer Relation told me that it is abnormal, and no any kind of knocking or noisy different from working engine sound should be heard. Overrev protection does not create any knocking, and F20ESH engine has no alarm. They advised to see Yamaha dealer.
I was running my boat with dealer?s mechanic, today. He confirmed the DINGING but didn?t know what it is. Just checked spark plugs (normal), and told me to run motor for remaining 7 out of 10 braking in hours. If dinging continue he will run test with test prop. Well,.. I was not happy with that conclusion.
After about 5hrs of braking in, dinging became knocking. I have changed gas brand to Shell 89 - no help. I am just about to do 10 hrs service.
Does any one have the same engine, and what is your experience at 5500 rpm? Any similar DINGING/KNOCKING? It is my first boat, and first outboard. I have 8 pitch prop. What should I do? Thanks for advice in advance.