-38-
Model G0939/G0940 (Mfd. Since 12/20)
Machine Operation
Symptom
Possible Cause
Possible Solution
Excessive snipe
(gouge at the end of
the workpiece that is
uneven with the rest
of the cut).
Note:
A small
amount of snipe is
inevitable with all
types of planers—
the key is to
minimize it.
1. Table extension wings (or aftermarket
support table) not aligned with main table.
2. Workpiece not properly supported as it
leaves planer.
3. Some snipe is inevitable.
1. Adjust rear extension wing hex bolts to align
extension wing with main table.
2. Hold workpiece up slightly as it leaves outfeed end
of planer.
3. Plane lumber longer than your intended workpiece
length, then cut off excess after planing complete.
Workpiece stops/
slows in middle of
cut.
1. Excessive depth of cut.
2. Feed rollers too low or too high.
3. Pitch and glue build up on planer
components.
1. Reduce depth of cut. (Reduce cutting depth when
planing hard woods.)
2. Raise/lower feed rollers (
Page 35).
3. Clean internal planer components with a pitch/resin
dissolving solvent.
Chipping (consistent
pattern).
1. Knots or conflicting grain direction in wood.
2. Taking too deep of a cut.
3. Nicked or chipped knife/insert.
1. Inspect workpiece for knots and grain direction; only
use clean stock, and cut WITH the grain.
2. Reduce depth of cut. (
Page 24. Always reduce
cutting depth when planing hard woods).
3. Replace affected knife (
Page 27), or have it
sharpened; rotate/replace inserts (
Page 30).
Fuzzy grain.
1. Wood may have high moisture content or
surface wetness.
2. Dull knives/inserts.
1. Check moisture content is below 20% and allow to
dry if moisture is too high.
2. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 30).
Long lines or ridges
that run along length
of board.
1. Nicked or chipped knife/inserts.
1. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 30).
Glossy surface.
1. Dull knives/inserts.
2. Cutting depth too shallow.
1. Replace knives (
Page 27) or have them
professionally sharpened; rotate/replace inserts
(
Page 30).
2. Increase depth of cut (
Page 24).
Infeed/outfeed
rollers not rotating.
1. Chain and sprockets are worn,
misadjusted, disconnected, or broken.
1. Adjust chain and sprockets; replace if necessary.
