77REGULAR CHECKS AND MAINTENANCE WORK
3. Grease at each 90 (1.58 rad.) position of the pitch
bearing. Using the grease gun , apply 5 shots at every
position. Refer to the "RECOMMENDED OILS"
section.
BInspection and Cleaning Air Filter Element
Open the engine hood and remove the dust-cover. Take
out only outer element, clean the element, case interior
and reassemble. During reassembly, take care to install
the dust-cover so that its TOP mark (arrow) faces up-
wards. Do not remove the inner element.
A Should the machine be used in extremely dusty areas,
the air filter element must be inspected and cleaned
more frequently than in the specified maintenance
periods.
A The air filter has a dry element, keep free from oil.
A Do not run the engine without the air filter.
BAir Filter Maintenance
To avoid personal injury or death:
A Wear eye protection.
The quickest and safest method of maintenance is the
exchange of the paper cartridge. Furthermore there are
different methods of cleaning the cartridge.
C Cleaning with compressed air
Pressure of compressed air must be under 205 kPa (2.1
kgf/ , 30 psi), and the cartridge should be blown clean
from the inside to the outside until the dust deposits are
noticeably reduced.
A If the air suction is still inadequate, or the color of the
exhaust gases is abnormal even after the cleaning, the
air filter cartridge must be replaced.
(1) Grease fitting
(1) Inner element
(2) Outer element
(3) Dust-cover
(4) Clamps
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