Skyjack SJ6826RT - Kubota Diesel (D902) Engine Throttle Setting

147
SJ6826RT, SJ6832RT
213560ABA
Engine Section 5 – Procedures
5.3-4 Kubota Diesel (D902) Engine
Throttle Setting
Preparation
1. Look for a piece of reective tape on the fan belt
pulley. If the reective tape is missing, attach a
small piece.
2. When measuring the rpm using a digital
tachometer, aim the tachometer at this reective
strip while the engine is running.
3. On the platform control box, set the low/
high throttle switch to low. Start the engine
and let it run until it reaches normal operating
temperature, then switch it to high throttle for the
next step.
High Throttle Check and Setting
4. Measure the rpm using a digital tachometer, as
described in Step 2.
5. If the tachometer reads 3500 ±50 rpm , the high
throttle is already properly set. No further action
is required. If the tachometer reading is outside
of the correct range, proceed to the next step to
adjust it.
6. Adjust the high throttle by rst loosening the jam
nuts on either end of the long coupling nut, then
turning the coupling nut and measuring the rpm
until it reaches 3500 ±50 rpm.
Coupling nut
Jam nuts
7. Once the correct rpm is reached, apply a drop
of Loctite 242 to the threads, and tighten the jam
nuts on each end.
Low Throttle Check and Setting
8. On the platform control box, set the low/high
throttle switch to low.
9. With the engine in low throttle, measure the
rpm using a digital tachometer, as described in
Step 2.
10. If the tachometer reads 2050 ±50 rpm , the low
throttle rpm is already properly set. No further
action is required. If the tachometer reading is
outside of the range given above, proceed to the
next step to adjust it.
11. Adjust the low idle by rst loosening the low
idle stop jam nut, then turning the low idle stop
screw and measuring the engine speed until it
reaches 2050 ±50 rpm.
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