Maintenance; Idle Speed Adjustment - Maruyama P23-10 Manual Del Operador

IMPORTANT
If the guide bar or saw chain jams into the
branch, do not force it. Widen the cut using a
wedge to remove the pruner and tr y cutting it
again. Forcing the pruner may damage the
m a i n u n i t o f t h e p r u n e r a n d c a u s e a
malfunction of the pruner.
Saw chain tension adjustments
WARNING
• When using the pruner be sure to turn
t h e e n g i n e o f f b e f o r e m a k i n g a n y
inspections or any adjustments.
• Do not make any adjustments when the
guide bar or saw chain is still hot
immediately after using the pruner. Wait
until it has cooled before making any
adjustments.
1. Turn the nut on the chain cover once to loosen it.
2. Lift up the leading edge of the guide bar and turn the
regulating screw to tighten the saw chain. Turning
the screw clockwise tightens the saw chain, whereas
turning it counterclockwise looses the saw chain.
3. Securely tighten the nut on the chain cover.
4. Verify that the saw chain on the central section of the
guide bar can be lifted with fingers 3 to 4 mm off the
guide bar.

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
authorized by Maruyama Manufacturing Company,
Inc. The use of parts that are not equivalent in
performance and durability to authorized parts may
impair the effectiveness 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 performance.
particularly critical are air and fuel filters, spark plug
heat range, cooling air intake area and proper gaps of
coil and plug.
Engine

Idle Speed Adjustment

This Pruner is equipped with non-adjustable fuel
mixture carburetor. The engine idle speed is the only
adjustment for the operator.
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, 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 serious
personal injur y 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
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 Attached Tool may be rotating/ moving during idle
speed adjustment. Wear the recommended personal
p r o t e c t i v e e q u i p m e n t a n d o b s e r v e a l l s a f e t y
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 2700 and 3300 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
djustment screw on the carburetor.
− US-20 −
WARNING