Checking The Front Fork Legs; Checking The Front Fork Protector Guide; Cleaning The Front Fork Oil Seal And Dust Seal; Air Bleeding From Front Fork - Yamaha YZ 2017 Series Owner's Service Manual

CHECKING THE FRONT FORK LEGS

EASB29B099
1. Stand the vehicle upright on a level surface.
EWA
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
2. Check:
• Inner tube
Damage/scratches  Replace.
• Front fork leg (s)
Oil leaks between inner tube and outer tube
 Replace the oil seal.
3. Hold the vehicle upright and apply the front
brake.
4. Check:
• Front fork operation
Push down hard on the handlebar several
times and check if the front fork rebounds
smoothly.
Unsmooth operation  Correct or replace.
Refer to "FRONT FORK" on page 4-38.
CHECKING THE FRONT FORK PROTEC-
EASB29B100
TOR GUIDE
1. Check:
• Protector guide "1"
Out of specification  Replace.
TIP
The protector guide reaches the limit of its use
when it is worn down to the same height "a" as
of the outer tube circumference.
1
a
3-29
CLEANING THE FRONT FORK OIL SEAL
EASB29B101
AND DUST SEAL
1. Remove:
• Protector
• Dust seal "1"
ECA
NOTICE
Be careful not to damage the dust seal and
the inner tube by a driver.
1
2. Clean:
• Dust seal "a"
• Scraper "b"
• Oil seal "c"
TIP
• Clean the dust seal, scraper and oil seal after
every run.
• Apply lithium-soap-based grease on the inner
tube.
c
LS

AIR BLEEDING FROM FRONT FORK

EASB29B102
TIP
If the front fork initial movement feels stiff dur-
ing a run, relieve the front fork internal pres-
sure.
1. Use a suitable stand to raise the front wheel
off the ground.
EWA
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
2. Remove the air bleed screw "1" and release
the internal pressure from the front fork.
CHASSIS
b
a