Y.p.v.s; Yamaha Power Valve System); Sidestand - Yamaha DT125R Owner's Manual

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1. Y.P.V.S.

Y.P.V.S. (Yamaha Power
Valve System)
The Y.P.V.S. is a vital part of the
engine and requires very sophisticat-
ed adjustment. Adjustment should be
left to a Yamaha dealer who has the
professional knowledge and experi-
ence to do so.
INSTRUMENT AND CONTROL FUNCTIONS
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The Y.P.V.S.
Yamaha factory after many tests. If
the settings are disturbed by
someone without sufficient techni-
cal knowledge, poor engine perfor-
mance and damage may result.
The Y.P.V.S. operation can be heard
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in the following instances:
8 When the main switch is turned
on and the engine is started.
8 When the engine stalls while the
main switch is on.
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If the Y.P.V.S. does not operate,
ask a Yamaha dealer to inspect the
vehicle.
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Sidestand

This model is equipped with an igni-
was set at the
tion circuit cut-off system. The motor-
cycle must not be ridden when the
sidestand is down. The sidestand is
located on the left side of the frame.
(Refer to page 5-1 for an explanation
of this system.)
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3-15
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