2018 YAMAHA YFZ50 brake

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Page 89 of 132

YAMAHA YFZ50 2018  Owners Manual 8-7
8
15*Steering system • Check operation and repair or replace if dam-
aged.
• Check toe-in and adjust if necessary. √√√√√
16 Engine oil • Change.
• Check ATV for oil leakage, and

Page 104 of 132

YAMAHA YFZ50 2018  Owners Manual 8-22
84. Tighten the locknut.
5. Slide the rubber covers to their original posi-
tions.
EBU24061Valve clearanceThe valve clearance changes with use, resulting in
improper air-fuel mixture and/or engin

Page 105 of 132

YAMAHA YFZ50 2018  Owners Manual 8-23
8
Rear brake
To check rear brake shoe wear, check the position
of the adjusting nut. If the nut is more than 18 mm
(0.71 in) from the end of the bolt, the brake shoes
need to be replaced.
EBU2433

Page 106 of 132

YAMAHA YFZ50 2018  Owners Manual 8-24
81. Loosen the upper locknut and fully turn in the
upper adjusting bolt.
2. Loosen the lower locknut.
3. Turn the lower adjusting bolt in direction (a) to increase the lever free play, and in dir

Page 107 of 132

YAMAHA YFZ50 2018  Owners Manual 8-25
8
6. Tighten the upper locknut.
TIPAfter adjusting the brake lever free play, check the
front brake shoes for wear. EBU33782Adjusting the rear brake lever free playThe rear brake lever free play

Page 108 of 132

YAMAHA YFZ50 2018  Owners Manual 8-26
8
TIPAfter adjusting the brake lever free play, check the
rear brake shoes for wear. EBU34014Drive chain slackThe drive chain slack should be checked before
each ride and adjusted if necessary.TI

Page 109 of 132

YAMAHA YFZ50 2018  Owners Manual 8-27
8
2. Loosen the rear brake lever free play adjust- ing nut. 3. Loosen the locknut.
1. Bolt
1. Nut
1
1
1. Rear brake lever free play adjusting nut
1. Drive chain slack adjusting nut
2. Locknut
1
1

Page 110 of 132

YAMAHA YFZ50 2018  Owners Manual 8-28
84. To tighten the drive chain, turn the drive chain
slack adjusting nut in direction (a). To loosen
the drive chain, turn the adjusting nut in direc-
tion (b) and push the rear wheels forward.
N
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