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Maintenance and care
Maintenance and care
Maintenance and care
General maintenance
Silencer
This unit must never be operated with a faulty or missing spark
arrester or silencer. Make sure the silencer is well secured and
in good condition. A worn or damaged silencer is a fire hazard
and may also cause hearing loss.
Spark plug
Keep the spark plug and wore connections tight and clean.
Fasteners
Make sure nuts, bolts, and screw (except carburettor adjusting
screws) are tight.
Carburettor adjustment
Every unit is test run at the factory and the carburettor is fine
tuned for maximum performance.
Before adjusting carburettor, clean or replace air filter, start en-
gine and run several minutes to bring it to operating temperature.
1.
Idle Speed Adjustment.
Start engine and turn idle speed adjustment screw (T) clock-
wise until the blades begin to move, then turn the screw (T)
anticlockwise until the blades stop moving. Turn screw (T)
anticlockwise an additional 1/2 turn.
2.
Accelerate to full throttle for 2 to 3 seconds to clear excess
fuel from engine then return to idle. Accelerate to full throttle
to check for smooth transition from idle to full throttle.
If you have any questions or problems, please contact your dealer.
IMPORTANT
Maintenance, replacement, or repair of emission control devices and system may be performed by any repair establishment or
individual. However, warranty repairs must be performed by a dealer or service center authorized by YAMABIKO CORPORA-
TION and 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 the warranty claim.
WARNING
Non-standard accessories, cutting attachment, or replacement parts may not operate properly with your unit and
may cause damage and lead to personal injury.
Before performing any maintenance, repair, or cleaning work on the unit, make sure the engine and cutting attach-
ment are completely stopped. Disconnect the spark plug wire before performing service or maintenance.
Operating the engine without a silencer, or with a silencer that is damaged or improperly installed, can increase en-
gine noise sufficiently to cause hearing loss.
WARNING
When carburettor adjustment is completed, cutter blade should not move at idle, otherwise serious personal injury may
result.
CAUTION
When starting, idle speed adjuster (T) should be adjusted not to move the cutter blade.
When there is some trouble with the carburettor, contact your dealer.
T: Idle speed adjuster
