Maintenance Section
-212-
Governor Lever and Engine Speed
Control (Diesel Engine Only) -
Check ,Adjust
4TNV98 Diesel Engine Only
The governor lever and engine speed control (
throttle lever, pedal, etc.) of the machine are
connected together by a throttle cable or rod. If the
cable becomes stretched, or the connections
loosen, the governor lever may not respond to
change of engine speed control position. This may
make operation of the machine unsafe. Check the
cable periodically and adjust if necessary.
NEVER force the throttle cable or pedal to move.
This may deform the governor lever or stretch the
cable and cause irregular operation of the engine
speed control
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.
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
WARNING
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..
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