Operator`s manual

AMERICAN-LINCOLN 1-45
7760
P-4713
GENERAL MACHINE MAINTENANCE
AIR INTAKE SYSTEM
NOTE
Monitor the air filter indicator daily
The importance of maintaining an air filter cannot be overemphasized. Dirt ingested through improperly installed,
improperly serviced, or inadequate air filter elements wears out more engines than long hours of operation. Even a
small amount of dirt will wear out a set of piston rings in just a few hours. Operating with a clogged air filter element
also causes the fuel mixture to be richer, which can lead to formation of harmful sludge deposits in the engine.
Always cover the air intake when the air filter is removed for servicing. Do not neglect servicing the air filter. Use only
approved replacement parts. Keep all other air intake components, such as hoses and clamps, secure and in good
condition to prevent entrance of unfiltered air.
Over maintenance can cause damage. Removing the air filter element more often than is needed allows contami-
nants to enter the engine unnecessarily.
AIR FILTER
The engine air filter housing includes a dust cap and a dry cartridge type air filter element. The dust cap must be
emptied of dirt daily. The air filter element must be replaced every 75 to 100 hours. The filter element must be
replaced if it is damaged or has been cleaned three times.
Replace the engine air filter only when the Yellow Filter Service Indicator reaches the red band at the top of the
indicator. The yellow indicator will stay at the red band when the engine is off. Reset the indicator by depressing the
black button at the bottom of the indicator.
TO REPLACE AIR FILTER ELEMENT
1. Stop the engine and engage the machine parking brake.
WARNING
Always park on a level surface, stop the engine, and engage parking brake before working on the
machine to keep it from creeping or rolling.
2. Unscrew the clamp ring on the filter.
3. Remove the dust cap.
4. Empty the dust cap.
5. Remove the filter wing nut.
6. Gently pull the filter element out of the filter housing.