Maintenance; Idle Speed Adjustment - Maruyama M42BK-QC Manuel Du Propriétaire

Hot Restart
To start an engine that is already warmed up (hot
restart), or if the ambient temperature exceeds 68°F
(20°C):
1. Pump the primer bulb at the bottom of the car-
buretor until fuel can be seen flowing through the
fuel return line to the fuel tank.
2. Move the choke lever to the open (
and move the stop switch to the "ON" position.
3. Leave the throttle trigger in the idle position and
pull the starter grip.
4. If the engine fails to start after three to four pulls,
follow the instruction in the Cold Starting
Procedure section (page US-18).
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 the "STOP" position.
Fast-idle Start Lock
STOP (OFF)
Stop Switch

Maintenance

Maintenance, replacement or repair of emission control
devices and systems may be performed by any repair
establishment or individual; however, warranty repairs
must be performed by a dealer or service center autho-
rized by MARUYAMA Manufacturing Company, Inc.
The use of parts that are not equivalent in performance
and durability to authorized parts may impair the effec-
tiveness of the emission control system and may have a
bearing on the outcome of a warranty claim.
Maintenance on today's low-emission engines is
even more critical for longest life and best perfor-
mance. particularly critical are air and fuel filters,
spark plug heat range, cooling air intake area and
proper gaps of coil and plug.
) position
START (ON)
Fast-idle Start
Position
Idle Position

Idle Speed Adjustment

This Multi-Cutter is equipped with non-adjustable fuel
mixture carburetor. The engine idle speed is the only
adjustment for the operator.
• Idle speed adjustment should be
checked each time the unit is operated.
POTENTIAL HAZARD
• Engine must be running to make car-
buretor adjustments.
• When engine is running, attached tool
and other parts is rotating / moving
and other parts are moving.
WHAT CAN HAPPEN
• Contact with rotating / moving tool or
other moving parts could cause seri-
ous personal injury or death.
HOW TO AVOID THE HAZARD
• Keep hands, feet and clothing away from
attached tool and other moving parts.
• Keep all bystanders and pets away from unit
while making carburetor adjustments.
The Attached Tool may be rotating/ moving during idle
speed adjustment. Wear the recommended personal pro-
tective equipment and observe all safety instructions.
Keep hands and body away from the Attached Tool.
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 Attached
Tool must not rotate/move 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 —
WARNING
WARNING
Idle Speed Adjustment Screw