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To avoid injury from an accidental start, turn the switch OFF and always remove the plug from the power
source before making any adjustments.
● Consult Hitachi Authorized Service Center if for any reason the motor will not run.
SYMPTOM
Snipe
(gouging at ends of board)
Fuzzy grain
Torn grain
Rough raised grain
Uneven depth of cut
(side to side)
Rollercase elevation
adjusts with difficulty
Board feeds inside, but
stops moving past the
outfeed roller
Board thickness does not
match depth of cut scale
Chain jumping
Planer will not operate
Belt slipping
Rollercase connot be
lowered
TROUBLESHOOTING GUIDE
POSSIBLE CAUSES
1. Dull blades.
2. Inadequate support of long boards.
3. Uneven force on cutterhead.
4. Rollercase not level with base.
5. Lumber not butted properly.
Planing wood with a high moisture content
1. Too heavy a cut
2. Blades cutting against grain
3. Dull blades
1. Dull blades
2. Too heavy a cut
3. Moisture content too high
Rollercase not level with Planer
1. Gears dirty
2. Elevation screws dirty
3. Gears, elevation screws worn
4. Friction between rollercase and covers
5. Rollercase not parallel with planer base
6. Rollercase lock engaged
1. Outfeed rollers cannot rotate due
to clogging of chips
2. Too much pressure on the
cutterhead from long workpiece
Indicator not set correctly
1. Sprockets worn
2. Chain worn
1. No power to planer
2. Motor overload protection
tripped
3. Defective or loose switch or
wiring.
Loose belt
Workpiece thickness gauge setting
restricts rollercase movement.
WARNING
1. Replace blades per instructions.
2. Support long boards. See Avoiding
3. Gently push board when board is in
4. Adjust rollercase. See Adjusting.
5. Butt each piece of stock end-to-end as
Remove high moisture content from wood
by drying
1. Review OPERATION.
2. Review OPERATION.
3. Replace blades per instructions. See
1. Replace blades per instructions. See
2. Review OPERATION.
3. Dry the wood or use dried wood.
Rollercase not level. See ADJUSTING.
1. Clean and lubricate gears.
2. Clean and lubricate elevation screws.
3. Replace gears, elevation screw.
4. Clean and lubricate.
5. Adjust rollercase. See ADJUSTING.
6. Release rollercase lock
1. Clear the clogging, use dust collector
2. Use support stands to support
Adjust indicator and tighten securely.
1. Replace sprockets.
2. Replace chain.
1. Check power source by qualified
2. Turn planer off. Reset motor overload
3. Check switch and wiring by qualified
Replace belt, see Replacing V-Belt.
Reset thickness gauge setting.
– 18 –
CORRECTIVE ACTION
See CHANGING THE BLADE.
Snipe.
contact with only one feed roller. See
Avoiding Snipe.
boards pass through planer.
CHANGING THE BLADES.
CHANGING THE BLADES.
chip chute.
workpiece longer than 24" (610mm).
electrician.
protection.
electrician.
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