Komatsu PC88MR-10 Shop Manual page 1011

Hydraulic excavator
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No.
Cause
Defective starting switch
17
wiring
18 Defective hydraulic system
PC88MR-10
Point to check, remarks
Check starting switch wiring harness.
See "H-2 Engine speed drops significantly
or engine stalls" in H mode.
40 Troubleshooting
Troubleshooting of engine (S-mode)
Remedy
Perform
troubleshooting for E-1
and take remedies.
Perform
troubleshooting for H-2
and take remedies.
40-523

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