TM 5-4320-300-14
5-13.
FUEL CONTROL TUBE ASSEMBLY (CONT)
Location/Item
Action
Remarks
NOTE
The following setting of the eye bolt will produce approximately 7% droop in engine speed from no
load to full load. This is the optimum droop adjustment for most applications. The droop may be
lowered by increasing spring tension and raised by decreasing spring tension.
Changing the variable speed spring tension will change engine idle speed and maximum no load
speed, which must then be readjusted.
Adjust variable speed spring eye bolt until 1/8 inch (3 mm) of threads project
from outer jam nut. Tighten both jam nuts to retain adjustment.
13. Rack con-
Loosen all adjusting screws.
trol levers
14. Speed con-
Move to maximum speed position.
trol lever
15. Rack control
Adjust until both screws are equal in height
lever adjusting
and tight on fuel control tube.
screws (lever
closest to
governor)
16. Rear control
rack (rack
closest to
governor)
Move into full-fuel position, and note
clearance
between
fuel
rod
and
cylinder head bolt. Adjust clearance to
1/32 to 1/16 inch(0.79 to 1.58 mm) by
adjusting
the
rack
control
lever
adjusting screws. Tighten screws
when adjustment is complete.
5-43
