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WARNING
POTENTIAL HAZARD
• E n g i n e m u s t b e r u n n i n g t o m a k e
carburetor adjustments.
• When engine is running, Edger blade is
rotating and other parts are moving.
WHAT CAN HAPPEN
• Contact with rotating Edger blade or
other moving parts could cause serious
personal injur y or death.
HOW TO AVOID THE HAZARD
• Keep hands, feet and clothing away from
cutting head and other moving parts.
• Keep all bystanders and pets away from
u n i t w h i l e m a k i n g c a r b u r e t o r
adjustments.
The Edger blade may be rotating during idle speed
adjustment. Wear the recommended personal protec tive
equipment and observe all safety instructions. Keep
hands and body away from the cutting head.
When the throttle trigger is released, the engine should
return to an idle speed between 2700 and 3300 RPM,
or just below the clutch engagement speed. The Edger
blade must not rotate and the engine should not stall
(stop running) at engine idle speed.
To adjust the engine idle speed, rotate the idle speed
adjustment screw on the carburetor.
Idle Speed
Adjustment Screw
• Turn the idle speed screw in (clockwise) to
increase the engine idle speed.
• Turn the screw out (counterclockwise) to decrease
the engine idle speed.
If idle speed adjustment is necessary, and after
adjustment the Edger blade rotates or the engine
stalls, stop using the Edger immediately!
Contact your local authorized Maruyama Dealer for
assistance and servicing.
Air Filter
Maintenance Interval
• The air filter should be cleaned daily, or more
o f t e n w h e n w o r k i n g i n e x t r e m e l y d u s t y
conditions.
• Replace after every 100 hours of operation.
Air Filter Cleaning
1.
Loosen the knob and remove the air filter cover.
2.
Remove the foam element and filter screen from
the air filter body.
3.
Clean the foam element and filter screen with
warm, soapy water. Let the screen and element dry
completely.
4.
Apply a light coat of SAE 30 motor oil to the
foam element and squeeze out all excess oil.
5.
Reassemble the filter screen and foam element to
the air filter body.
6.
Reinstall the air filter cover and tighten the knob.
Air Filter Cover
— US-21 —
Filter Screen
Foam Element
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