My last post refers to this. Sorry for posting again but I really need some info on this.<br /><br />My boat has just been re-engined with a new, out of the crate Yamaha F-40 4 -stroke. When run in gear on the muffs & hose there is a rattle from the gear box. The sound comes and goes. The Yamaha...
I went to collect my boat with a new Yam F40 4 stroke. When the Yamaha dealer was running the motor to test it, (part of the P.D.I) he discovered that there a noise comming from the gear box when the motor was placed in forward and reverse. It is not particulary noisy. What you might expect if...
I am about to place an order for either of these motors. I can find very little info on the Yam 40 4 stroke. Can anyone running this motor give me any feedback?<br /><br />I like the technology of the Suzuki but am having difficulty with this motor not having a fresh water flushing port. I am...
Hi<br /><br />My overheat buzzer sounds in my control box. I continuity tested my thermoswitch in a pan of hot water and found that it switches at 100 degrees Celcius and remains switched while cooling down to 80 degrees C. This is spot on according to the Yam manual. I then clamped a steel...
I have just launched my boat for the season. It's a 17ft planing fishing boat with a 40hp 2-cyl Yamaha which is non power trim. Everything about my boat and engine is identical to last season. Now when I run at speed I am get vertical plumes of spray either side of the engine rising about 2...
My Yamaha 40hp 2 cyl 1990 motor is sounding its overheat alarm. I have researched extensively and tried pretty much everything that is suggested on this board. <br /><br />1. Changed thermo switch.<br />2. Changed impeller<br />3. Changed thermostat<br />4. Checked for salt build up.<br />5...
