Graco GrindLazer 25P474, Operation - Repair - Parts, Page: 30 / 74

Troubleshooting
30 3A7600C
Troubleshooting
Gas/Propane: To avoid injury from unexpected start
up, disable engine as follows: 1) Turn ignition OFF. 2)
Disconnect spark plug wires. 3) Disconnect negative
(-) battery cable from battery.
Electric: To avoid injury from unexpected start up,
disconnect power plug before you service your
machine.
Electric: To avoid injury from unexpected movement,
ensure Power Switch is in the OFF position before
connecting or disconnecting the power cord. In the
event of a power failure or interruption, ensure Power
Switch is in the OFF position before restoring power.
Problem Cause Solution
Cutters wearing unevenly/prema-
turely
Cutter head is too low Raise the cutter head
Material build up Clean the cutters
Bearings may be worn Replace bearings
Wrong cutters for application Contact Tech Services
Cutters Shaft Breakage
unevenly/prematurely
Cutter head is too low Raise the cutter head
Over 40 hours service life Replace shafts
Drum wearing prematurely or
cracking
Drum hitting work surface Raise the drum
Shafts and bushings not replaced within 40
hours Replace shafts and bushings
Excess Vibration
Bearings may be worn Replace bearings
Drive shaft worn Replace drive shaft
Improper cutter set-up Contact Tech Services
Spindle contacting the work surface Raise the cutter head
Wheels worn out Replace the wheels
Machine jumps erratically
RPM is too low Turn engine throttle or speed control to
highest setting
Work surface is severely uneven Move to smoother work surface