6
AIR INTAKE SYSTEM
(all models)
The importance of maintaining an air cleaner in proper condition can not be overemphasized! Dirt induced
through improperly installed, improperly serviced or inadequate elements, wears out more engines than does long
hours of operation. Even a small amount of dirt will wear out a set of piston rings in a few hours. Furthermore,
operating with a clogged element causes a richer fuel mixture which can lead to formation of harmful sludge
deposits. Always cover carburetor or air horn when air cleaner is removed for servicing.
Dry type air cleaner elements should be replaced after 100 to 200 hours if engine is normally operated under
good clean air conditions - service and replace element more frequently under dusty or dirty conditions.
Dry type elements should be cleaned after each 100 hours of operation or more often under dusty conditions --
remove element and tap lightly on a flat surface to remove loose surface dirt. Replace element if dirt does not drop
off easily. Do not wash dry elements in any liquid or attempt to blow dirt off with air hose as this will puncture the
filter element.
Carefully handle new element -- do not use if gasket surfaces are bent or twisted. Not only must the right filter
element be used but it must be properly installed to prevent unfiltered air from entering engine. Check the
following when installing new element.
1.
Back plate must be securely tightened to carburetor. Replace back plate if bent or cracked.
2.
Gasket surfaces of element must be flat against back plate and cover to seal effectively.
3.
Washer must be in place between cover and wing nut to seal and prevent unfiltered air from entering
through hole in cover. If washer is not used, make sure wing nut (special) properly seals area around cover
hole.
4.
Wing nut must be finger tight.
Figure 1. Dry Type Air Cleaner
LUBRICATION
TRANSMISSION
Capacity: 5 U.S. Quarts
Grade: GL-6 (API service class) Viscosity: 90W (SAE
standards)
Figure I Dry Type Air Cleaner
Change: after first 40 hours of operation. Drain plug is lowest
bolt on L.H. axle housing.
ENGINE
Capacity: 2 U.S. Quarts
Grade: SE (API service class)
Viscosity: (SAE standards) below 0°(F) 5\\'2() average 10\\ 30
above 85°(F) 10W4O
Change: 25 hours use or 3 months whichever occurs first.
