STV32 · STV36 · STV40, WSM ELECTRICAL SYSTEM
9-S10
(4) Fine Adjustment (Bi-speed Turn System)
When the front wheel turning angle sensor is replaced, the fine adjustment should be done to set the wheel angle
information for the bi-speed controller.
Procedure 1: Making standard setting for the fine adjustment
Procedure 2: Changing to the fine adjustment mode
Procedure 3: Checking the bi-speed indicator lamp light-up and saving the fine adjustment data
Procedure 4: Exiting from the fine adjustment mode
1. Get the front wheels in the straight-run state.
2. Turn off the main switch.
1. Hold down the bi-speed switch and turn on the main switch (The engine does not start). Now make sure the bi-
speed indicator lamp lights up and goes out 0.75 second later.
2. Release the bi-speed switch. This calls for the "fine adjustment and self-diagnosis mode".
1. First check up the bi-speed indicator lamp.
If any setting is wrong or a component part is defective or malpositioned, the bi-speed indicator lamp starts
blinking the number of times that corresponds to a trouble spot. See the [Lamp Blinking Chart] in "(5) Self
Diagnosis". The bi-speed lamp indicator remains off when there is nothing in trouble. If it is necessary to start
the engine for making the settings again, turn off the main switch and repeat from the above steps 1 in Procedure
1.
2. When the data is judged correct, the bi-speed indicator lamp lights up and stays on. Then hold down the bi-
speed switch for longer than 3 seconds. (The bi-speed indicator lamp goes out just when this switch is pressed
down.)
3. When the fine adjustment data has been properly saved, the bi-speed indicator lamp lights up and stays on
again. Now release the bi-speed switch.
4. If the data has not been saved properly, the bi-speed indicator lamp starts flashing at shorter intervals. In such
case, turn off the main switch and repeat the steps from Step 1 in procedure 2.
1. Make sure the bi-speed indicator lamp stay on. Finally turn off the switch.
(Reference)
B Standard Setting for Fine Adjustment and Self Diagnosis
Description Status Related Sensor
Front wheel Straight run Front wheel turning angle sensor
Tractor body Stop Travelling speed sensor
Engine Stop
0000007900E
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