hecht 553 SW, Instructions For Use Manual

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Marked items:
* See the instructions.
** These operations must be done in authorised service center.
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 runningG!
When you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel
can leak out and result in a fire or explosion.
1. Place a suitable container next to the engine to catch the used oil.
2. Remove the oil filler cap/dipstick
(fig. 24A) .
3. Remove the drain bolt (fig. 25A) - 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 (fig. 26) , or drain
the oil into the container by slightly tilting the engine toward the oil filler cap/dipstick
(fig. 27) . Before tilting the machine, remove fuel from tank. Keep the spark plug end of
the engine up.
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.
AIR FILTER
A dirty air filter will restrict air flow to the carburetor and cause poor engine performance.
Inspect the air filter each time the engine is operated. You will need to clean the air filter more
frequently if you operate the engine in very dusty areas.
Note:
I
Operating the engine without an air filter, or with a damaged air filter, will
allow dirt to enter the engine, causing rapid engine wear. This type of damage is
not covered.
AIR FILTER INSPECTION AND CLEANING
CAUTIONG!
A
The air filter must be serviced (cleaned) after 25 hours normal working.
Service more frequently when operating the machine in extremely dusty areas.