Checking The Throttle Cable Free Play; Valve Clearance - Yamaha YFM50RY Owner's Manual

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1. Throttle stop screw
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Engine idling speed:
1750–1850 r/min
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TIP
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If the specified idling speed cannot be obtained as
described above, have a Yamaha dealer make the
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adjustment.
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EBU27071

Checking the throttle cable free play

The throttle cable free play should be checked at
the intervals specified in the periodic maintenance
and lubrication chart.
(b)
(a)
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The throttle cable free play should measure 1.0–
3.0 mm (0.04–0.12 in) at the throttle lever. Period-
ically check the throttle cable free play and, if nec-
essary, have a Yamaha dealer adjust it.
1. Throttle lever free play
EBU24060

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.
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