MAINTENANCE
The life span of the machine can be reduced and
the risk of accidents can increase if machine
maintenance is not carried out correctly and if
service and/or repairs are not carried out
professionally. If you need further information,
please contact your nearest authorized service
dealer.
Unit/Maintenance Safety
Disconnect the spark plug before performing
maintenance, except carburetor adjustments.
WARNING: The complete clutch, clutch
cover, and shaft must be fitted before the
machine is started, otherwise parts could
come loose and cause personal injury.
Carburetor
Function
The carburetor governs the engine's speed via the
throttle control. Air and fuel are mixed in the
carburetor.
The T-screw regulates the throttle setting at idle
speed. If the T-screw is turned clockwise this gives
a higher idle speed; turning it counterclockwise
gives a lower idle speed.
Basic setting
The basic carburetor settings are adjusted during
testing at the factory. Fine adjustment should be
carried out by a trained technician.
WARNING: The cutting attachment may
be spinning during carburetor
adjustments. Wear your protective
equipment and observe all safety
instructions. Be sure the cutting
attachment stops turning when the engine
idles. When the unit is turned off, make
sure the cutting attachment has stopped
before the unit is set down.
CAUTION! If the cutting attachment rotates
when the engine is idling the idle adjustment
screw T should be turned counterclockwise
until the cutting attachment stops.
Recommended idle speed:
See "Technical data" section.
Recommended max. speed:
See "Technical data" section.
Fine adjustment of the idle speed-T
Adjust the idle speed using the idle adjustment
screw-T if it is necessary to readjust. First, turn the
idle adjustment screw-T clockwise until the cutting
attachment starts to rotate. Then, turn the screw
counterclockwise until the cutting attachment
stops. The idle speed is correctly adjusted when
the engine will run smoothly in every position. The
idle speed should also be well below the speed at
which the cutting attachment starts to rotate.
WARNING: If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your servicing dealer. Do
not use the machine until it has been
correctly adjusted or repaired.
Muffler
CAUTION! Muffler is fitted with a catalytic
converter designed to reduce harmful exhaust
gases.
(Starter housing removed for clarity)
The muffler is designed to reduce the noise level
and to direct the exhaust gases away from the
operator. The exhaust gases are hot and can
contain sparks, which may cause fire if directed
against dry and combustible material.
Mufflers are equipped with a special spark arrestor
mesh. The mesh should be checked and, if
necessary, cleaned by a servicing dealer. If the
mesh is damaged, it should be replaced.
If the mesh is frequently blocked, this can be a
sign that the performance of the catalytic converter
is impaired. Contact your servicing dealer to
inspect the muffler. A blocked mesh will cause the
machine to overheat and result in damage to the
cylinder and piston.
CAUTION: Never use a machine that has a
faulty or loose muffler. Ensure the muffler bolts
are tight.
Summary of Contents for 129RJ
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