Nector F. Robles
New member
I have 2 '94 yamaha hpdi 300's with about 650 hrs of use on each one. One motor does not respond as the other one does and is always about 1000 rpms behind the other one. acording to my mechanic the motor is not changing from 4 cylnders to 6 as it suposed to when put in gear. We have replaced the old shift position switch for a new one and have installed new gear cables but have not been able to correct the poblem. Any Sugestions???