Stihl HT 131 User Manual

7Series 4180 Powerhead
4. Troubleshooting
4.1 Clutch
Condition Cause Remedy
Attachment stops under load at full
throttle
Clutch badly worn Install new clutch
Clutch drum badly worn Install new clutch drum
Attachment runs when engine is
idling
Engine idle speed too high Readjust with idle speed screw
(counterclockwise)
Clutch springs stretched or fatigued Install new clutch
Spring hooks broken Install new clutch

Stihl HT 131 Specifications

General

Engine Power	1.4 kW (1.9 bhp)
Displacement	36.3 cc
Sound Power Level	106 dB(A)
Overall Length	270 - 390 cm
Guide Bar Length	30 cm
Power Source	Gas
Chain Pitch	3/8"
Chain Gauge	1.3 mm