Adjusting The Carburetor; Adjusting The Engine Idling Speed - Yamaha AG200FEE 2014 Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
NOTICE: Make sure that the air
1
filter element is properly seated
in the air filter case. The engine
2
should never be operated with-
out the air filter element in-
stalled, otherwise the piston(s)
3
and/or cylinder(s) may become
excessively worn.
4
10. Install the air filter case cover by in-
stalling the screws.
11. Install the panel.
5
6
7
8
9
10
11
12

Adjusting the carburetor

The carburetor is an important part of
the engine and requires very sophisti-
cated adjustment. Therefore, most car-
buretor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
[ECA10482]
rience. The adjustment described in the
following section, however, may be ser-
viced by the owner as part of routine
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.
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Adjusting the engine idling
speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
TIP
A diagnostic tachometer is needed to
make this adjustment.
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these settings
TIP
The engine is warm when it quickly re-
sponds to the throttle.
7-13
1. Attach the tachometer to the spark
plug lead.
2. Start the engine and warm it up
for several minutes at 1000–2000
r/min while occasionally revving it
to 4000–5000 r/min.
3. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the throttle stop
screw. To increase the engine
idling speed, turn the screw in di-
rection (a). To decrease the en-
gine idling speed, turn the screw in
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