8999146EN: v1 26/02/2020
56
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
6
Troubleshooting
Problem
Cause
Solution
Motor leak
Too high return oil pressure
Check oil pressure. Free to tank.
Change washer.
Too high leak oil pressure
Check oil pressure. Free to tank.
Change washer.
Return hose not correctly mounted
or has fallen off
Install correctly or reinstall.
Change seals and/or lid on the
valve.
Overheating
Incorrect machine speed
Test RPM on machine.
Wrong oil level
Check oil level.
Wrong oil type
Empty the tank and refill with
correct oil type.
Blockage of blades
Remove cuttings/debris.
Air temperature is too high
Install a hydraulic oil cooler.
Reduce operating speed.
Hydraulic failure
Oil level too low
Refill with oil to the correct level.
Oil leak in pressure hose
Check machine for leaks.
Oil pump filter is blocked
Replace the filter element.
Branches get
“frayed”
Larger branches than
recommended
Never exceed the recommended
maximum branch sizes of the
hedge cutter.
Working during winter time
Work during growth season.
Cutting result skewed/hacked
Defective rotor bearings
Change bearings.
Rotor or blade damaged/bent
Change rotor/blade and only work
on suitable material.
Forward drive too fast
Adjust speed.
Machine is shaking
Blade damaged/bent
Change blade.
A blade is stuck
Loosen the blade.
A blade is broken
Replace the blade.
Cuttings are thrown towards the
cab
Attachment is angled so the
blades are facing the cab
Only operate as recommended by
Spearhead Machinery.
A rotor stops
Belt tension incorrect
Adjust to correct tension.