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Troubleshooting Guide
Sawing Problems
6
6-1
HD-R04doc041910
Troubleshooting Guide
SECTION 6 TROUBLESHOOTING GUIDE
6.1
Sawing Problems
WARNING!
Before performing service near moving parts
such as blades, pulleys, motors, belts and chains, first turn
the key switch to the OFF (#0) position and remove the key.
If the key is turned on and moving parts activated, serious
injury may result.
PROBLEM
CAUSE
SOLUTION
Blades Dull Quickly
Dirty logs
Clean or debark logs, especially on
entry side of the cut
When grinding teeth, heating
too much and causing teeth to
soften
Grind just enough metal to restore
sharpness to the teeth. Use
water/coolant while sharpening blade
Poor sharpening techniques
Make sure the tip is being sharpened
completely (See Sharpener Manual)
Blades Break Prematurely
Poor sharpening techniques
See Sharpener Manual
Rubber belts on blade wheels
worn to a point that blade con-
tacts metal pulley - look for
shiny spots on edge of wheels
Change blade wheel belts (B-57)
Tension too tight
Tension blade to recommended
specifications
Blade Does Not Track Right
on Drive Wheel
Cant adjustment is incorrect
Readjust
Flat/worn belts
Replace B-57 belts
Blade Guides Do Not Spin
While Cutting
Frozen bearings
Replace bearings
Blade Does Not Stop Immedi-
ately After Disengaging
Brake strap too loose
Adjust brake strap
Drive Belts Come Off Pulleys
When Disengaging Blade
Brake strap too loose
Adjust brake strap
Brake drum misaligned
Realign on drive shaft
Brake strap tightened with one
edge too loose and one edge
too tight
Adjust brake strap
Drive Belts Wear Prematurely
or Jump
Engine/motor and drive pul-
leys out of alignment
.