Yamaha YZF R125 clutch problems

Yamaha YZF R125 for sale on Ebay UK

Yamaha YZF R125 parts for sale on Ebay UK

   

Yamaha YZF R125 Workshop Manuals on Ebay UK 

Yamaha YZF R125 clutch common problems rebuild strip inspection test and measure

Clutch slipping     , could be worn plates  , or incorrect adjustment or fitting of components and cables , weak clutch springs ,

Clutch is dragging , engine idle speed too high , broken springs , clutch drum basket damage ,
plates warped or damaged , incorrect spring torque or cable adjustment .



Testing the clutch plates 

First lay the plates on a perfectly flat surface hear i use a tile , i would normally use
an engineers table .

you are going to probe around the outside diameter with your feeler gauge (0.20)  ,
if the feeler gauge is able to go beneath the plate its warped to badly to reuse

Need clutch parts try here on Ebay UK 

You need to measure the clutch spring length to ensure they are in the correct range to out of range them replace as they will not do the job expected of them .

also measure for wear on the friction plates replace any out of

tolerances do not cheat make sure you replace as loss of clutch 

is not a great idea on a ling bike ride .

Here i am testing for warping of any of the clutch plates 

check the edges of plates and basket too 

Another place that can develop judder or knocking on these clutches is the rivets on the drive gear , they become lose and can cause judder or knocking.

Beware of this ball bearing for the clutch actuator pin 

How the clutch works on a YZF R125