LUBRICATION
LUBRICATING OIL -
TO be on the safe side, check oil in engine crankcase before each start to insure that the level
is between the L and F marks on dipstick.
Do not operate plant if level exceeds the *‘F1’ mark or if
below **L*l marnove oil filler-breather cap and add oil here.
Use only 03s meeting the require-
ments of the American Petroleum Institutes (API) Service classification SC.
Oils with this classifica-
tion are detergent type oils.
The classification is usually stamped or printed on the oil cans.
SERVICE Use SAE 30 weight for temperatures above 30* F.
--~~~~~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~-
SC
Use SAE 10 weight for temperatures below 30’ F.
On a new plant,
change oil after the first 5 hours of operation and thereafter at 50 hour
every 6 months--whichever occurs first),
Change oil more frequently if plant -operated
under extremely dusty or dirty conditions.
Whenever possible,
drain oil while hot as it will flow more
freely and carry away a greater amount of contamination.
.
20 PSI NORMAL
ACORN NUT
(NOT USED ON
SOME MODELS)
PRESSURE ADJUSTING SCREW
.
FIGURE 2-l
-- NORMAL OIL PRESSURE AND ADJUSTMENT
OIL PRESSURE ADJUSTMENT
.
Oil Pressure: After the engine has been thoroughly warme d up and is operating
with proper weight of
011 in crankcase, the oil pressure should be about 20 psi.
An external oil press ure adjusting screw is
provided on the crankcase just below and to the rear of the carburetor.
Lf norm al operating pressure
is lower than 20 psi,
remove acorn nut, loosen lock nut then turn screw until pressure is correct.
Secure lock nut at new setting and reinstall protective acorn nut. When engine is cold, pressure may
be as high as 50 -
60 psi but should gradually return to about 20 psi as the engine warms up.
OIL FILLER - BREATHER CAP
After about every fourth oil change (200 hours),
service oil filler-breather cap. DO this more
of&n under dusty, dirty conditions.
A clogged breather can lead to build up of abnormal crankcase
pressures and result in l’eakage around seals, gaskets, etc.
Service breather by washing in solvent such as kerosene --swish element in solvent to dislodge
dirt.
After cleaning,
allow a few moments for it to drip dry then apply light amount of oil to the mesh
eleme’nt.
Use same weight and grade of oil as used in engine.
Always make sure cap is in place before
placing engine in operation.
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