Yamaha YZF-R125 Service Manual: Checking the timing chain tensioner

Yamaha YZF-R125 Service Manual / Engine / Cylinder head / Checking the timing chain tensioner

1. Check:

Timing chain tensioner Cracks/damage/rough movement Replace.


a. Lightly press the timing chain tensioner rod into the timing chain tensioner housing by hand.

NOTE:

While pressing the timing chain tensioner rod, wind it clockwise with a thin screwdriver "1" until it stops.

Checking the timing chain tensioner


b. Remove the screwdriver and slowly release the timing chain tensioner rod.

c. Make sure that the timing chain tensioner rod comes out of the timing chain tensioner housing smoothly. If there is rough movement, replace the timing chain tensioner.

Checking the timing chain tensioner


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