TROUBLESHOOTING
Possible Remedy
Possible Cause
ENGINE OVERHEATS
Keep the air intake area and cooling fins clean; see
."Engine Cooling and Air Cleaner" on page 20.
.Richen; see carburetor on page 9 and 10.
Insufficient cool air, dirty air intake screen,
shroud, or cooling fins. Carburetor set to lean
CREEPING
Speed control out of adjustment (Models
1250, 1450, and 1650) ..,
.Refer to Service Manual.*
See your International Harvester dealer.
ENGINE OIL
designed for heavy duty service in gasoline engines,
and is formulated to minimize metallic deposits,
lengthen spark plug and valve life. I H Low Ash Oil
used with unleaded gasoline is the ideal combina-
tion to maintain performance and extend engine
life.
The engine crankcase is filled with ship-away oil.
This oil may be used for the first 30 hours of
engine operation at temperatures between +90
degrees F. and 0 degrees F. I f temperatures are not
within this range, drain the oil from the crankcase
and replace with new oil as specified in the
"lubrication Table". The engine oil must be
drained and replaced with new oil every 30 hours
of engine operation.
I f other than I H Low Ash Engine Oil is used it
must meet API Service Classification SE. For
maximum engine life select API SE oils with lowest
levels of barium, calcium, or magnesium additives
and minimum ash content (approximately 0.5%).
Lubricant suppliers will normally furnish this
information on their engine oils.
To aid starting, the selection of crankcase lubri-
cating oils should be based on the lowest antici-
pated temperatures until the next drain period. See
page 31.
Multi-viscosity numbered oils such as SAE 10W-30
or SAE 10-40 must not be used above 32 degrees
Farenheit.
We recommend IH Low Ash Engine Oil for
gasoline engines. I H Low Ash Engine Oil exceeds
API Service Classification SE. It is specifically
29
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