Handling The Rear Shock Absorber; Disposing Of A Rear Shock Absorber; Removing The Rear Shock Absorber Assembly; Checking The Rear Shock Absorber Assembly - Yamaha 2009 YFM25RY Service Manual

EAS23170

HANDLING THE REAR SHOCK ABSORBER

EWA13750
WARNING
This rear shock absorber and gas cylinder
contains highly compressed nitrogen gas.
Before handling the rear shock absorber
and gas cylinder, read and make sure you
understand the following information. The
manufacturer cannot be held responsible
for property damage or personal injury that
may result from improper handling of the
rear shock absorber and gas cylinder.
• Do not tamper or attempt to open the rear
shock absorber or gas cylinder.
• Do not subject the rear shock absorber or
gas cylinder to an open flame or any other
source of high heat. High heat can cause
an explosion due to excessive gas pres-
sure.
• Do not deform or damage the rear shock
absorber or gas cylinder in any way. Rear
shock absorber damage will result in
poor damping performance.
EAS23200
DISPOSING OF A REAR SHOCK
ABSORBER
1. Gas pressure must be released before dis-
posing of a rear shock absorber and gas
cylinder. To release the gas pressure, drill a
2–3 mm (0.08–0.12 in) hole through the
rear shock absorber at a point 15–20 mm
(0.59–0.79 in) from its end as shown.
EWA13760
WARNING
Wear eye protection to prevent eye damage
from released gas or metal chips.
A. for 4D3D
REAR SHOCK ABSORBER ASSEMBLY
B. for 4D3H, 4D3M
EAS23210
REMOVING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
TIP
Place the vehicle on a suitable stand so that
the rear wheel is elevated.
2. Remove:
• Rear shock absorber assembly lower bolt
• Rear shock absorber assembly upper
bolt
TIP
While removing the rear shock absorber
assembly lower bolt, hold the swingarm so that
it does not drop down.
EAS23250
CHECKING THE REAR SHOCK ABSORBER
ASSEMBLY
1. Check:
• Rear shock absorber rod
Bends/damage → Replace the rear
shock absorber assembly.
• Rear shock absorber
Gas leaks/oil leaks → Replace the rear
shock absorber assembly.
• Spring
Damage/wear → Replace the rear shock
absorber assembly.
• Gas cylinder (for 4D3H, 4D3M)
Damage/gas leaks → Replace the rear
shock absorber assembly.
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