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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28092
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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A friend of mine has an older yamaha and it hardly moves when

Customer Question

a friend of mine has an older yamaha and it hardly moves when she presses the gas padal i noticed that the belt is very loose even when running also noticed that there is is nothing with teeth at the smaller end could a gear have sheared off or is it suposed to be like that
Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.
Welcome to JUST ANSWER small engines, let me try to help you !! Belt starts loose and when engine speed is increased, the drive clutch has to close down on it, and as the driven clutch speed increases , it does the same. There are no gears, just two variable pulleys. Either of the pulleys, drive or driven can be bad.
Customer: replied 2 years ago.

ok any ideas why it is so slow i mean this thing is crawling and was not able to climb back up drive way in reverse had to be pushed

Expert:  Curtis B. replied 2 years ago.
Is the engine running at high rpm? Or just idling? Is the drive clutch collapsing the pulley? If not, replace the drive clutch.