Yamaha '09 YZF-R1, Kit Manual

Page: 19 / 81

– 16 –
(Setting of back torque limiter of clutch).
A clutch with a back torque limiter mechanism is installed in the YZF-R1 engines. The
operation of the back torque limiter can be adjusted through adjusting: the number of SHIMs
(set up for the kit); the number of springs; the whole thickness of the clutch plate; and the
strength of spring (set up for the kit) of the slipper clutch setting set.
(Recommended setting method)
To begin with, the dimensions of the clutch are re-set to the standard values. (For details,
please refer to the service manual published from YAMAHA MOTOR CO. LTD.
When the slipper clutch setting sets are to be installed, and the number of the SHIMs are
to be three in stack, the setting may be carried out according to the standard.
Spring may be selected from either one of the kit parts or the standard parts. Spring load of
the kit parts is designed to increase in 10% as compared with that of the standard parts.
2
a b
c
1 2
c