wsm L503 Workshop Manual page 516

L3130 · L3430 · L3830 · L4630 · L5030, WSM
GST Valve FIne-adjustment Mode (Mode "F")
(Setting the function of proportional reducing valve)
NOTE
• When the ECU or GST valve is replaced, this adjustment is
required.
1. While holding down the both switches at once, start the engine.
2. Select mode "F" (See page 9-S12 "Mode Selection").
3. "P-VALVE" is displayed (b) and STEP-01 (c) is displayed the 3
seconds after.
NOTE
• To make this adjustment, follow these steps in the exact
order described. (Otherwise the switch does not work to go
to next step. At "STEP-01" and "STEP-03", however, the
next step can be moved without their settings.)
• Push the display mode switch to move to the next step.
4. STEP-01 (c) : Release parking brake.
5. STEP-02 (d) : Set the engine speed at 1000 to 1400 min
6. STEP-03 (e) : Set front tires straight ahead.
7. STEP-04 (f) : Operate the speed selection lever (GST lever) as
follows ; disengaged the clutch, select "forward" with the shuttle
lever, and shift the GST lever from 1 through 12 several times.
Set the GST lever at the positions other than neutral.
8. STEP-05 (g) : Set the GST lever to Neutral position.
9. STEP-06 (h) : Set shuttle lever to forward and engage clutch.
10.PUSH SW (i) : Push the display mode switch for more than 3
seconds.
11.STEP-07 (j) : To preform this function the operator must be
seated on the tractor.
After a short delay the tractor will begin to move slowly. And then,
after it moves a little, the tractor stops automatically. (Fine-
adjustment is being executed.)
12.OK is displayed (k) : The setting has been preserved correctly to
the ECU.
NG is displayed (l) : The setting has not been correctly saved in
the ECU. Repeat the entire procedure.
(a) Mode Selection Display
(b) Information Display
(c) Setting Display-1
(d) Setting Display-2
(e) Setting Display-3
(f) Setting Display-4
9-S17
ELECTRICAL SYSTEM
−1
(g) Setting Display-5
(h) Setting Display-6
(i) Adjusting Display
(j) Setting Display-7
(k) Correct Preserving Display
(l) Incorrect Preserving Display
W1020355
KiSC issued 02, 2007 A
(rpm).