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8
EBU33951
Adjusting the throttle lever free play
Periodically check the throttle lever free play and
adjust if necessary.
TIP
The engine idling speed must be checked and ad-
justed before adjusting the throttle lever free play.
1. Slide the rubber covers apart.
2. Loosen the locknut.
3. To increase the throttle lever free play, turn
the throttle lever free play adjusting nut in di-
rection (a). To decrease the throttle lever free
play, turn the adjusting nut in direction (b).
4. Tighten the locknut.
5. Slide the rubber covers to their original posi-
tions.
EBU24061
Valve clearance
The valve clearance changes with use, resulting in
improper air-fuel mixture and/or engine noise. To
prevent this from occurring, the valve clearance
must be adjusted by a Yamaha dealer at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
EBU29602
Brakes
Replacement of brake components requires pro-
fessional knowledge. Brake service should be
performed by a Yamaha dealer.
1. Rubber cover
2. Throttle lever free play adjusting nut
3. Locknut
4. Throttle lever free play
Throttle lever free play:
2.0–3.2 mm (0.08–0.13 in)
1
2 3
1
4
(a)
(b)
UBW463E0.book Page 22 Monday, January 28, 2019 10:22 AM
Summary of Contents for YFZ50 2019
Page 2: ...DIC183 Original instructions Notice originale Manual original PRINTED IN TAIWAN 2019 01 E F S...
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