Checking The Engine Idling Speed; Checking The Throttle Cable Free Play; Valve Clearance - Yamaha XT250 2008 Owner's Manual

Checking the engine idling
speed
The engine idling speed must be
checked as follows and, if necessary,
adjusted by a Yamaha dealer at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.
Start the engine and warm it up for sev-
eral minutes at 1000–2000 r/min while
occasionally revving it to 4000–5000 r/
min.
TIP
The engine is warm when it quickly re-
sponds to the throttle.
Engine idling speed:
1300–1500 r/min
PERIODIC MAINTENANCE AND ADJUSTMENT
EAU21311
Checking the throttle cable
free play
1. Throttle cable free play
The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21382

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 intervals specified in the periodic
1
maintenance and lubrication chart.
7-19
EAU21401
2
3
4
5
6
7
8
9