hey ,

a friend has an sherco 2.9 (2005) and when his engine gets hot the clutchleaver fels like there is air in the hydrolics.

clutchplates are new so it the piston in the clutch leaver, no leaking of hydrolic fluid, oil is changed whit the clutch plates +- 30 days ago

when the engine is cold it works fine

there is no clutch drag and it is not slipping eather just the leaver that becomes soft and no more point on whits you feel the clutch starts to work.

any help is welcome

greetings bob

sorry for any spelling mistakes not used to write in English

Check for a blockage of the crankcase vent tube(below intake). If bike is an early model it may be run up under the fuel tank and pinched.

Re route it to the right side of the carb, up and over the fuel inlet to carb and then down to rear of skidplate.

Hope that helps.

Thanks for the hint we tried it and it seems to work fine

greetings bob