Yanmar 4TNE98, Service Manual

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4TNV98 & 4TNE98 Diesel Engine Section 2. Periodic Maintenance 53
Checking and adjusting the governor lever:
1. Check that the governor lever (Figure 5-11, (1))
makes uniform contact with the high idle (Figure
5-11, (2)) and low idle (Figure 5-11, (3)) speed
limit screws when the engine speed control is in
the high idle speed or low idle speed position.
4TNV98 ENGINE
4TNE98 ENGINE
Figure 5-11
2. If the governor lever does not make contact with
the high idle or low idle speed limit screw, adjust
the throttle cable.
3. In some engine speed control applications,
loosen the throttle cable lock nut (Figure 5-11,
(4)) and adjust the cable so the governor lever
makes proper contact with the high / low idle
speed limit screw.
CAUTION
NEVER attempt to adjust the low or high idle
speed limit screw. This may impair the safety
and performance of the machine and shorten its
life. If the idle speed limit screws require
adjustment, see your authorized Yanmar
industrial engine dealer or distributor.
Clean Air Cleaner Element
Note that a typical air cleaner is shown in
Figure 5-
12 and Figure 5-13 for illustrative purposes only.
The engine performance is adversely affected when
the air cleaner element is clogged with dust.
Be sure to clean the air filter element periodically.
1. Unlatch and remove the air cleaner cover
(Figure 5-12, (1)).
Figure 5-12
2. Remove the element (Figure 5-12, (2)) (outer
element if equipped with two elements).
CAUTION
FLYING OBJECT HAZARD!
ALWAYS wear eye protection when servicing
the engine and when using compressed air or
high-pressure water. Dust, flying debris,
compressed air, pressurized water or steam
may injure your eyes.
Failure to comply may result in minor or
moderate injury.