Yanmar 4LHA-HTP - Page 668

Chapter 9 Electrical System
7. Tachometer
4LHA Series
Check if the sender is loosely fitted.
i No
Yes Fix the sender securely.
Measure the internal resistance of the sender.
(Tobe1.6±0.1kQat20
o
Q
No Replace the sender.
Measure the output voltage of the sender.
(To be IV or higher at 20
o
Q
No Replace the sender.
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