International Harvester Company Cub Lo-Boy C-60 Service Manual page 70

Probable Cause
Remedy
--
Excessive Fuel Consumption -Continued
4.
Carburetor:
Check float level and reset if necessary.
(a)
(b)
Float level set too high.
Repair or replace.
Lealdng
needle or seat.
Reposition choke control linkage.
(c) Choke plate not fully open.
Service the air cleaner.
5.
Restriction in air cleaner.
Engine Noises
1. Loose piston pin. A sharp rap at
idling speed. The pin at fault can
be found by short circuiting the
spark plugs, one at a time, until
the noise stops.
Repair or replace.
2.
A flat slap, when advancing engine
speed under load, indicates a
loose piston.
Replace piston.
Replace worn bearings.
3.
A metallic knock when idling and
retarding engine speed, but disappears
under load indicates worn or loose
connecting rod bearings. The bear-
ing at fault can be located by short
circuiting the spark plugs one at a
time. The noise will disappear when
the cylinder with the defective bear-
ing is short circuited.
Bearing Failure
Refer to problem "Loss of Oil Pressure."
1. Low oil pressure.
Maintain proper oil level. Check forleaks
.
2.
Lack of oil.
Keep engine at normal operating
temperature.
3.
Engine runs too hot.
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