JLG 40RTS Service Manual - Manual (Page 33)

SECTION 2 - PROCEDURES
3120826 – JLG Sizzor – 2-17
2.16 THROTTLE CHECKS AND
ADJUSTMENTS - DEUTZ
NOTE: Never run fuel tank dry. Diesel engines cannot be
restarted after running out of fuel until fuel system
has been air-vented or “bled” of air. (See Deutz
Operators Manual for procedure.)
Disconnect actuator cable from the throttle lever. With the
aid of an assistant, start the engine and allow it to come
up to operating temperature. Adjust throttle lever stop until
engine runs at 2200 rpm. Shut down engine. Reattach
actuator cable to throttle lever, making sure that low
engine setting remains the same. Restart engine and
check settings. If necessary, adjust slide pin to contact low
engine limit switch at 2200 rpm. Shut down engine.
With the aid of an assistant, start engine from platform and
allow it to come up to operating temperature. Disconnect
modular dump valve wire. Activate HIGH ENGINE switch.
Activate and Drive Controller and hold it in full drive posi-
tion. Adjust slide pin to contact high engine limit switch at
2800 rpm. Shut off all switches and controllers. Reconnect
modular control dump valve wire.
NOTE: Actuator cable travel must stop slightly before lever
makes contact with throttle lever stop. Failure to do
so will burn out actuator.
2.17 AUTOMATIC CHOKE ADJUSTMENT -
FORD ENGINE
1. At 21° C (70°F) the choke plate should be open .8
mm (1/32 in.) (not touching the choke bore).
2. If the ambient temperature is not 21° C (70°F), an
addtional adjustment is required. As follows:
a. Loosen the three cover plate screws.
b. Adjust the cover to open the choke plate.8 mm
(1/32 in.)..
c. Adjust the cover to open the choke plate 1 /32".
Readjust for ambient temperature by rotating the
cover one (1) mark per 5°F from 70° F. Rotate
CCW (lean) if warmer than 70°F, CW (rich) if
colder than 70°F. (If actual temperature is 80°F,
set at 1/32" and rotate two (2) marks CCW [lean]
direction).
d. Tighten the three cover plate screws and check
for free rotation (no sticking or binding) of the
choke shaft.