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Motorcycle Repair/clutch slipping


dear sir changed levers on my 1985 yamaha vmax after market now my clutch is slipping.

Clutch Master Cylinder
Clutch Master Cylinder  
Hello Christopher,

Either the lever is unsuitable, or you made a mistake during installation.

Remove the lever's retaining bolt, and check the alignment of the holes.
If you have to push the lever in, more than a millimetre, in order to install the bolt back,
something is wrong.

If the lever is the right one for your bike, then most probably the push-pin (#3 in the picture) is misplaced and not correctly centered, keeping the piston pressed.

CAUTION: Also check the brake lever the same way (hole alignment). You could be in a very dangerous situation. Though you may not feel that something is wrong, you may find yourself
releasing the brakes after deceleration, but the bike keep slowing down stronger and stronger,
even until wheel-lock! Be extremely careful...

Regards and Best of Luck,

P.S. :If still no clue, get back to me with a photo of your clutch lever and involving parts.  

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Lazaros Ampatzidis


I can help you on EVERY issue involving POST-1980 Japanese Motorcycles plus KTM and Husaberg. My field of expertise includes Engine, Transmission, Fuel system (carburation & EFI),Electrics and Electronics. Maintenance, repair and tuning. Road and off-road suspension tuning. Please don't ask me about non-Japanese Motorcycle, especially American built on which I have low to zero experience.


I'm a rider and hobbyist since childhood. 25 years motorcycle workshop mechanic.15 years motorcycle racing mechanic. In order of experience high to low:Kawasaki,Suzuki,Honda,Yamaha,KTM,Husaberg.

Hellenic (Greek) Technical School.Internal Combustion Engines Engineer. Automotive Electronics.

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