Hot Restart
To start the engine that is already warmed up (hot
restart), or if the ambient temperature exceeds
68°F(20°C):
1. Pump the primer bulb until fuel can be seen flow-
ing through the fuel return line to the fuel tank.
(Flowing fuel should be almost clear, not foamy or
full of bubbles.)
2. Turn the choke lever to the open position, and set
the stop switch to the “ON” position.
3. Leave the throttle trigger in the idle position and
pull the starter grip.
If the engine fails to start after you follow the
above procedures, contact an authorized
MARUYAMA dealer.
To Stop The Engine:
1. Release the throttle trigger.
2. Slide the stop switch to “STOP” position.
Idle Speed Adjustment
This Trimmer/Brushcutter is equipped with non-adjust-
able fuel mixture carburetor. The engine idle speed is
the only adjustment for the operator.
The cutting head 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 2400 and 2800 RPM,
or just below the clutch engagement speed. The cut-
ting head 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.
— US-19 —
Idle Position
Fast-idle Start Lock
Stop Switch
Fast-idle Position
START (ON)
STOP (OFF)
WARNING
POTENTIAL HAZARD
• Engine must be running to make some
carburetor adjustments.
• When engine is running, cutting head is
rotating and other parts are moving.
WHAT CAN HAPPEN
• Contact with rotating cutting head or
other moving parts could cause serious
personal injury 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
unit while making carburetor adjust-
ments.
Idle Speed
Adjustment Screw
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