Checking The Front Fork Legs (For Yzf-R1M); Assembling The Front Fork Legs (For Yzf-R1M) - Yamaha YZF-R1 Series Service Manual

EAS31650
CHECKING THE FRONT FORK LEGS (for
YZF-R1M)
The following procedure applies to both of the
front fork legs.
1. Check:
• Inner tube
• Outer tube
Bends/damage/scratches → Replace.
EWA13650
WARNING
Do not attempt to straighten a bent inner
tube as this may dangerously weaken it.
2. Measure:
• Spring free length "a"
Out of specification → Replace.
Fork spring free length
260.0 mm (10.24 in)
Limit
254.8 mm (10.03 in)
G088921
3. Check:
• Cap bolt
Cracks/damage → Replace.
EAS31651
ASSEMBLING THE FRONT FORK LEGS (for
YZF-R1M)
The following procedure applies to both of the
front fork legs.
EWA18360
WARNING
If both front fork legs are not filled with the
specified amount of the fork oil, it may cause
poor handling and a loss of stability.
TIP
• When assembling the front fork leg, be sure to
replace the following parts:
–Oil seal
–Dust seal
–O-ring
• Before assembling the front fork leg, make
sure all of the components are clean.
FRONT FORK (for YZF-R1M)
1. Lubricate:
• Inner tube's outer surface
Recommended oil
Öhlins R&T 43
2. Install:
• Dust seal "1"
• Oil seal clip "2"
• Oil seal "3"
New
• Washer "4"
ECA19170
NOTICE
Make sure the numbered side of the oil seal
faces bottom side.
TIP
• Before installing the oil seal, lubricate its lips
with lithium-soap-based grease.
• Lubricate the outer surface of the inner tube
with fork oil.
• Before installing the oil seal, cover the top of
the front fork leg with a plastic bag to protect
the oil seal during installation.
3
4
G088922
3. Install:
• Outer tube
(to the inner tube)
4. Install:
• Washer
• Oil seal "1"
(with the fork seal driver "2")
4-104
New
1
2