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AiRFILTER
M AINTENANCE
always turn the unit off and allow it to cool before
you clean or service it.
Cleaning
the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It is an
important item to maintain. Failure to maintain your air filter
properly can result in poor performance or can cause permanent
damage to your engine.
1. Open the air filter cover. Push the tab on the left side of the cover
in, swing the air filter cover out and off the air filter housing (Fig. 19).
2. Remove the air filter and the screen that sits behind it (Fig. 19).
Air Filter
Choke Lever
Screw
Screen
Air Filter
\
Air Filter Cover
Hooks
3.
Air Filter
Air Filter
Housing
Fig. 19
Wash the filter in detergent and water (Fig. 20). Rinse the
filter thoroughly and allow it to dry.
U
Fig. 20
4. Apply enough clean SAE 30 motor oil to lightly coat the filter
(Fig. 21).
5. Squeeze the filter to spread and remove excess oil (Fig. 21).
6. Replace the filter (Fig. 19).
NOTE:
If the unit is operated without the air filter, you will
VOiD the warranty.
7. Reinstall the air filter cover. Position the hooks on the right
side of the air filter cover into the slots at the right side of
the air filter housing (Fig. 19).
8. Swing the cover to the left until the air filter screw contacts
the air filter housing (Fig. 19).
9. Twist the air filter screw clockwise
into the screw hole until it
stops.
DO NOT OVERTIGHTEN.
Fig. 21
CARBURETOR
ADJUSTMENT
The idle speed of the engine is adjustable. An idleadjustment screw
is reached though a hole in the top of the engine cover (Fig. 22).
NOTE:
Careless adjustments can seriously damage your unit.
For carburetor adjustments, take your unit to a qualified
service dealer.
Screw
Fig. 22
Check Fuel
Old fuel is usually the reason for improper unit performance. Drain
and refill the tank with fresh fuel 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 flow. This isoften 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
I _
IWARNING:
Thisunit needs torunduring idle s peedl
adjustment. Wear protective
clothing a nd observeall I
safety instructions
toprevent serious personal injury. I
If, a fter c heckingthefuel and cleaning theair filter,
theengine
still will n otidle, a djust theidle speed screw as follows:
I.Start theengine and letit runata highidle fora minuteto
warm up. Referto Starting/Stopping Instructions.
NOTE:
Ensure thetines arenot incontactwiththeground
when adjusting t he idle.
2. Release thethrottle trigger and let theengine idle. I f the
enginestops,insert a smallphillips
or flat b ladescrewdriver
into the holeintheair filter/muffler
cover (Fig. 2 1). Turn the
idle speed screw in, clockwise,I/8ofa turnata time (as
needed) until t he engineidles smoothly.
NOTE:
The tines should notrotate when the engineidles.
3. If thetines rotate when the engineidles, turnthe idle speed
screw counterclockwise
1/8 of a turn at a time (as needed),
to reduce idle speed.
Checking the fuel, cleaning the air filter, and adjusting the idle
speed should solve most engine problems. If not and all of 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 a qualified service dealer.
11
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