Subaru EH025A Owner's Manual page 24

3) Remove the oil gauge, then tilt the
engine and drain the oil into a pan or
other receptacle.
(EH035V) Remove the oil drain
screw and drain the oil.
4) Put the engine on a level surface,
then fill with the oil up to the point of
overflowing the filler neck. Pour the
oil in from a squeeze bottle or other
appropriate.
5) After filling the engine with oil,
reinsert the oil gauge. Ensure that
the oil gauge is tight, as if it loosens
later oil will leak out.
ADJUSTING CARBURETOR
Adjusting idling rpm
When adjust screw is turned right,
engine rpm increases, and when it is
turned left, rpm decreases.
(Refer to illustration.)
Normal idling rpm
NOTE:
The carburetor greatly affects the
performance of the engine.
Since it has been adjusted carefully
at our factory before shipment, avoid
adjusting unless absolutely
necessary.
If adjustments are needed, contact
your nearest dealer.
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3000±100rpm