Maintenance (continued)
Fig, 6_13
Idle Speed Screw
Fig. 6-14
2, Use a needle-nose pliers to grasp the cotlar of the
soark arrestor and putt it out of the muffler (f-ig 6-13).
NOTE: Use only a needle-nose pliers. Other pliers or
tools may damage the spark arrestor.
: is damaged or ifyou are unable to clean it thoroughly.
4. Reinstall sl3ark arrestor. Use the needle-nose ptiers
to gently pusri trio spark arrestor back into the
muffler until it snaps into place.
]he idle speed of the engine is adjustable by the screw
next to the air fi_tercover (Fig, 6-14).
NOTE: Careless adjustments can seriously damage
your unit. An authorized service dealer
should make carburetor adjustments.
Check Fuel Mixture
Otd and/or improperly mixed fuel is usualIy the reason for
improper unit performance. Drain and refitl the tank with
fresh, properly mixed fuet prior to making any
adjustments. Refer to Oil and Fuel Information,
Clean Air Filter
The condition of the air filter is important to the operation
of the unit. A dirty air filter will restrict air ftow and change
the air/fuel mixture. This is often mistaken for an out of
adjustment carburetor, Check the condition of the air
filter before adjusting the idle speed screw. Refer to Air
Filter Maintenance,
Adjust Idle Speed Screw
The cutting attachment may be spinning during
idle speed adjustment. Wear protective clothing
and observe all safety instructions to prevent
serious personal injury.
If, after checking the fuet mixture and cleaning the air
filter, the engine still will not idle, adjust the idle speed
screw as follows:
1.
2.
Start the engine and let it run at a high idle for a
minute to warm up,
Release the throttle trigger and Iet the engine idle. If
the engine stops, insert a small phillips or flat blade
screwdriver into the screw next to the air filter cover
(Fig, 6-14). Turn the idle speed screw in, clockwise,
1/8 of a turn at a time (as needed) until the engine
idles smoothly.
NOTE: The cutting attachment should not rotate
when the engine idles.
3. tf the cutting attachment rotates when the engine
idles, turn the idle speed screw counterclockwise 1/8
of a turn at a time (as needed), to reduce idle speed.
Checking the fuel mixture, cleaning the air filter, and
adjusting the idle speed screw should solve most engine
problems, If not and alI the following are true:
The engine will not idle
The engine hesitates or stalls on acceleration
There is a loss of engine power
Have the carburetor adjusted by an authorized service
dealer.
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