Yamaha YZ125 2019 Owner's Service Manual page 78

ADJUSTING THE FRONT FORK
COMPRESSION DAMPING FORCE
1. Adjust:
• Compression damping force
By turning the adjuster "1".
Stiffer "a" → Increase the compression
damping force. (Turn the adjuster "1" in.)
Softer "b" → Decrease the compression
damping force. (Turn the adjuster "1"
out.)
Extent of adjustment:
Maximum
Fully turned in posi-
tion
• STANDARD POSITION:
This is the position which is back by the spe-
cific number of clicks from the fully turned-in
position.
Standard position:
12 clicks out
Do not force the adjuster past the minimum
or maximum extent of adjustment. The ad-
juster may be damaged.
Always adjust each front fork to the same
setting. Uneven adjustment can cause poor
handling and loss of stability.
CHECKING THE REAR SHOCK ABSORBER
1. Inspect:
• Swingarm smooth action
Abnormal noise/unsmooth action → Grease
the pivoting points or repair the pivoting
points.
Damage/oil leakage → Replace.
Minimum
20 clicks out (from
maximum position)
3-23
ADJUSTING THE REAR SHOCK
ABSORBER SPRING PRELOAD
1. Elevate the rear wheel by placing the suit-
able stand under the engine.
2. Remove:
• Rear frame
3. Measure:
• Spring fitting length
Standard fitting length:
I.D. MARK/ Q'TY
Red/1
The I.D. mark "a" is marked at the end of the
spring.
CHASSIS
Length
252.0 mm (9.92 in)