9-042
TROUBLESHOOTING
2-5-3. Tachometer reading is abnormal
Reference Fig.: 2-5-1
Check point
Check/Cause
Action
1. Tachometer Sensor
Start engine and fix engine speed at 1,000 rpm. Measure
pulse between tachometer sensor terminal wire No. 63
outlet wire BrR and ground terminal wire LgY.
Standard pulse : 110,011/min.
If measured pulse is abnormal, tachometer sensor is
faulty.
•
•
Replace tachometer
sensor.
2. Control Box
Start engine and fix engine speed at 1,000 rpm. Measure
pulse between control box terminal wire No. 21 outlet wire
YG and ground terminal wire B.
Standard pulse : 2,000/min.
If measured pulse is abnormal, control box is faulty.
•
•
Replace control box.
3. Combination Meter
(Tachometer)
when starter switch is ON, measure voltage between
combination meter battery terminal wire No. 35 inlet wire
YW and ground terminal wire B.
Standard voltage : 12 V or more
If above item is OK and no abnormality found in
tachometer sensor or control box, combination meter is
faulty.
•
•
Replace combination
meter.
4. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
2-5-4. Hour meter is abnormal
Reference Fig.: 2-5-1
Check point
Check/Cause
Action
1. Combination Meter
(Hour meter)
when starter switch is ON, measure voltage between
combination meter battery terminal wire No. 35 inlet wire
YW and ground terminal wire B.
Standard voltage : 12 V or more
If no abnormality is found, combination meter is faulty.
•
•
Replace combination
meter.
2. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
Содержание SV410-2
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Страница 23: ...SPECIFICATIONS ...
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Страница 41: ...ENGINE AND CONTROLS ...
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