Adjusting The Carburetor; Adjusting The Engine Idling Speed - Yamaha YZ85 2013 Owner's Manual

1. Washer
10. Install the air filter case cover in
the original position as shown.
11. Install the seat.
PERIODIC MAINTENANCE AND ADJUSTMENT

Adjusting the carburetor

The carburetor is an important part of
the engine and requires very sophisti-
cated adjustment. Therefore, most
carburetor adjustments should be left
to a Yamaha dealer, who has the nec-
essary professional knowledge and ex-
1
perience. The adjustment described in
the following section, however, may be
serviced by the owner as part of rou-
tine maintenance.
NOTICE
The carburetor has been set and ex-
tensively tested at the Yamaha fac-
tory. Changing
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine.
7-14
EAU42111
Adjusting the engine idling
speed
The engine idling speed must be ad-
justed when necessary.
1. Start the engine and thoroughly
warm it up.
2. Turn the throttle stop screw until
the engine runs at the lowest pos-
sible speed.
3. To increase the engine idling
speed, turn the throttle stop screw
ECA10551
in direction (a). To decrease the
engine idling speed, turn the throt-
tle stop screw in direction (b).
these settings
1. Throttle stop screw
EAU44391
7