hecht 785 - Engine Maintenance Schedule; Oil Change Procedure

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FIRST 5 HOURS OF OPERATION
• Check fastening of all nuts
• Engine oil replacement
EVERY 25 HOURS OF OPERATION
• Check fastening of all nuts
• Engine oil replacement
• Engine oil condition check
• 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.
Note: I The first oil change should be carried out after 5 operating hours, when operating
under heavy load another change should be done after 25 operating hours.
Drain the engine oil when the engine is warm. Warm oil drains quickly and complete.
Attention: Do not drain oil when the engine is running!
1. Place a suitable container next to the engine to catch the used oil.
2. Remove the oil filler cap/dipstick.
3. Remove the drain bolt - if equipped - and allow the used oil to drain completely into
the container.
4. For engine without drain plug, we recommend to use oil extractor pump, or drain the oil
into the container by slightly tilting the engine toward the oil filler cap/dipstick. Before
tilting the machine, remove fuel from tank. Keep the spark plug end of the engine up. Do
not drain oil from the upper filler neck unless the fuel tank is completely empty. Otherwise
when the machine is tilted, fuel might leak and cause fire or explosion.
5. Reinstall the drain bolt. With the engine in a level position, fill to the upper limit mark on
cap/dipstick.
6. Reinstall the oil filler cap/dipstick securely.
Note: I Please dispose of used motor oil in a manner that is compatible with the environment.
We suggest you take used oil in a sealed container to your local recycling center or service
station for reclamation. Do not throw it in the trash or pour it on the ground or down
a drain.
• Running the engine with a low oil level can cause engine damage.
• Wash your hands with soap and water after handling used oil.
(1) These operations must be done in authorised service center