Yamaha YZ125N1 Motorcycle User Manual


 
TUN
7-19
SETTING
EC72B000
Rear suspension setting
The rear suspension setting should be made
depending on the rider’s feeling of an actual run
and the circuit conditions.
The rear suspension setting includes the follow-
ing two factors:
1. Setting of spring preload
9Change the set length of the spring.
9Change the spring.
2. Setting of damping force
9Change the rebound damping.
9Change the compression damping.
EC72C001
Choosing set length
1. Place a stand or block under the engine to
put the rear wheel above the floor, and mea-
sure the length a between the rear wheel
axle center and the rear fender holding bolt.
2. Remove the stand or block from the engine
and with a rider astride the seat, measure
the sunken length b between the rear wheel
axle center and the rear fender holding bolt.
3. Loosen the locknut 1 and make adjustment
by turning the spring adjuster 2 to achieve
the standard figure from the subtraction of
the length b from the length a.
Standard figure:
90~100 mm (3.5~3.9 in)
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