Checking The Steering System; Adjusting The Toe-In - Yamaha YFM70RY Service Manual

EAS29280

CHECKING THE STEERING SYSTEM

1. Place the vehicle on a level surface.
2. Check:
• Steering assembly bushings
Move the handlebar up and down, and back
and forth.
Excessive play → Replace the steering stem
bushings.
3. Check:
• Tie-rod ends
Free play → Replace the tie-rod end.
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a. Turn the handlebar left until it stops.
b. Move the handlebar slightly to the right and
left.
c. Check for play in the tie-rod ends.
d. Turn the handlebar right until it stops.
e. Move the handlebar slightly to the left and
right.
f. Check for play in the tie-rod ends "1".
1
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4. Raise the front end of the vehicle so that
there is no weight on the front wheels.
5. Check:
• Ball joints and wheel bearings
Move the wheels laterally back and forth.
Excessive free play → Replace the front
arms (upper and lower) and/or wheel bear-
ings.
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EAS29290

ADJUSTING THE TOE-IN

1. Place the vehicle on a level surface.
2. Measure:
• Toe-in
Out of specification → Adjust.
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TIP
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Before measuring the toe-in, make sure that the
tire pressure is correct.
a. Mark both front tire tread centers.
b. Face the handlebar straight ahead.
c. Measure the width "A" between the marks.
d. Rotate the front tires 180° until the marks are
exactly opposite one another.
e. Measure the width "B" between the marks.
f. Calculate the toe-in using the formula given
below.
Toe-in = "B" – "A"
g. If the toe-in is incorrect, adjust it.
LLL
3-27
Toe-in (with tires touching the
ground)
2.0–12.0 mm (0.08–0.47 in)
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CHASSIS
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