hecht 746 - Engine Maintenance; Inspection and Maintenance Plan; Oil Change

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for all moving parts to stop and allow the machine to cool down. Prevent the engine
from being started accidentally. Disconnect the spark plug.
THIS WARNING IS NOT REPEATED IN ANY FOLLOWING POINTS!
Keep this recommendation about checks, maintenance and intervals stated in this users guide.
Others service operations, which are more complicated, or it needs special tools, let it on our
authorized service.
MACHINE MAINTENANCE
• Keep the machine in good condition.
• Careful handling and regular cleaning ensure that the machine remains functional and
efficient for a long time.
• In case of abnormal vibrations proceed according to instructions (see instruction for removal
of fault).
• Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition.
• Always ensure that the ventilation openings are kept clear of debris.
• Replace worn or damaged parts for safety. Use only original spare parts.
• Replace safety and instruction stickers and labels with new if necessary.
ENGINE MAINTENANCE
INSPECTION AND MAINTENANCE PLAN
CAUTION! A
If the motor needs to be tilted during maintenance, the fuel tank must be empty.
The spark plug must always be upwards. If the fuel tank isn‘t emptied and the motor
is tilted differently and in a different direction, then it can be difficult to start due to
the oil and petrol that clogs inappropriate parts of the motor, polluting the air filter,
the spark plug and the like.
FIRST 5 HOURS OF OPERATION
• Check fastening of all nuts
EVERY 25 HOURS OF OPERATION
• Check fastening of all nuts
• Clean surrounding of muffler
• Air filter cleaning (if equipped)
• Inspection, cleaning and possible spark plug replacement
EVERY 100 HOURS OF OPERATION
• Spark plug replacement
• Check fuel hose condition
• Inspection of carburetor adjustment (1)
OIL CHANGE
It is recommended to ask authorized service for oil change.
(1) These operations must be done in authorised service center