Perio
d
ic maintenance an
d
a
d
justment
6-19
6
EAU34302
A
d
justin
g
the en
g
ine i
d
lin
g
spee
d
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
Check the engine idling speed and, if
necessary, adjust it to specification by
turning the idle adjusting screw. To in-
crease the engine idling speed, turn the
screw in direction (a). To decrease the
engine idling speed, turn the screw in
direction (b).
TIP
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21386
Checkin
g
the throttle
g
rip free
play
Measure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
1. Idle adjusting screw
En
g
ine i
d
lin
g
spee
d
:
1250–1350 r/min
1
(a)
(b)
1. Throttle grip free play
Throttle
g
rip free play:
3.0–5.0 mm (0.12–0.20 in)
UBS1E0E0.book Page 19 Thursday, October 8, 2015 3:40 PM