International Harvester Company Cub Lo-Boy C-60 Service Manual page 69

Smoky Exhaust -Continued
3. Worn valve gmdes, valve stems,
pistons and sticky or worn oil
control rings.
Repair or replace.
4.
Distributor not properly timed.
Check and adjust tinling. Refer to
"Tune-Up", page 1-69.
Open choke fully.
5.
Choke not fully open.
Excessive Lubricating Oil Consumption
1. Oil leaks Check and service where necessary;
valve covers, tappet cover plate, crank-
case front cover, oil seals at front and
rear of crankshaft, oil pan plug, gasket,
oil filter and oil pressure indicator tube.
2. Worn valve guides, piston rings,
pistons and clogged oil control rings. ..
Replace
worn parts.
3. Incorrect grade of lubricating oil.
Use grade of lubricating oil specifed in
Operator's Manual.
4.
Over-heated engine.
Refer to "Engine Overheats f' in this chart.
Excessive oil poured into crankcase. ..
5
Drain oil. Add amount specified in
Operator's Manual.
Excessive Fuel Consumption
1. Distributor:
(a)
Point gap incorrect.
(b)
Readjust point gap. Refer to "Tune-Up",
page 1-69.
Check and adjust timing. Refer to
"Tune-Up", page 1-69.
Jg11ition timing incorrect.
Replace
coil.
2.
Low voltage to spark plugs caused by
defective coil.
3.
Worn or fouled spark plugs.
Clean plugs and reset the gap. Refer to
"Tune-Up", page 1-69 for correct plug
gap setting.
1-65