Jet JWP-12DX Owner's Manual page 16

Torn Grain
Rough/Raised Grain
Poor Feeding of Lumber
Uneven Depth of Cut Side to Side
Head Difficult to Adjust
Board Thickness Doesn't Match Depth Scale
Machine Won't Start
Too heavy a cut
Remove less material
Knives cutting against grain
Cut with the grain
Dull knives
Sharpen knives
Dull knives
Sharpen knives
Too heavy a cut
Remove less material while planning
Moisture content too high
Remove moisture by drying or use dry wood
Motor belt slipping
Replace motor belt
Planer bed rough or dirty
Clean pitch and residue; wax planer bed
Surface of feed rollers are dirty
Clean feed rollers with a cloth and mild cleaner
Cutterhead knife projection not uniform
Adjust knives
Lack of lubrication on corner posts and screws
Lubricate corner posts and screws
Depth scale incorrect
Adjust depth scale
Not plugged in
Check power source
Circuit breaker/fuse tripped
Check power source
Motor failure
Have motor checked
Loose wire
Have motor checked by qualified electrician
Circuit breaker next to on/off switch tripped
Allow motor to cool and reset switch
16