GAS GAS FSE 450 Service Manual page 46

The oil is pumped from the oil reservoir to the engine when the
engine is running. The engine oil reservoir is located in the top front
part of the frame. The oil level drops when the bike is not in use.
The oil drips down to the engine crankcase. To check the oil level,
follow these instructions:
If the bike has been stopped for a week, we can be sure that all the
oil is within the engine crank case.
1. Start the engine and leave the motorcycle in neutral 3 minutes.
NOTE
When starting the engine, closely follow care and warnings
from the section on starting the engine.
2. Stop the engine and wait three minutes.
(A)
4. Wipe the dipstick clean with a rag.
5. Keeping the motorcycle upright vertically, put the dip stick back
in all the way without screwing into place.
6. Remove the dip stick and check the oil level. Oil level must be
between line (L) (LOW) and (F) (FULL). If that is not the case, fill up
the reservoir until the level reaches just the (F) line.
The level of the motor oil has to be between line (L) and line (F),
engine damage may occur otherwise.
Check the oil level with the dipstick, with the bike in a completely
upright position, every time you are going to use the motorcycle.
The engine oil expands and thus the level increases when it is
hot.
Check and adjust the level when the motor oil is not hot.
Changing the oil and filter
The oil should be changed when the engine is hot, since this helps
the oil to go out through the drain located in the lowest part of the
3. Take out the oil
engine.
dipstick (A).
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CAUTION
NOTE