Grizzly G0855 Owner's Manual page 43

Machine Operation
Symptom Possible Cause
Table is hard to 1. Table lock engaged/partially engaged.
adjust.
2. Table stop blocking movement.
3. Table gibs out of adjustment.
Excessive snipe 1. Outfeed table set too low.
(gouge in end of
board that is uneven
2. Knives set too high (G0855).
with rest of cut).
3. Operator pushing down on trailing end of
workpiece as it leaves cutterhead.
Workpiece stops in 1. Outfeed table set too high.
middle of cut.
Workpiece 1. Workpiece not suitable for jointing.
chipping, tear-out,
2. Operator not feeding workpiece to cut
indentations, or
"with" the grain.
overall rough cuts.
3. Feed rate too fast.
4. Excessive depth of cut.
5. Dull knives/inserts.
6. Dust collection problems.
Fuzzy grain left in 1. Wood has high moisture content.
workpiece.
2. Dull knives/inserts.
Long lines or ridges 1. Nicked or chipped knives/inserts.
that run along length
of workpiece.
2. Inserts not consistently tightened/torqued
(G0856).
3. Dirt or debris under inserts (G0856).
Uneven cutter 1. Feeding workpiece too fast.
marks, wavy
2. Knives not properly adjusted (G0855).
surface, or chatter
3. Dirt or debris under inserts (G0856).
marks across face
of workpiece.
Glossy surface; 1. Feed rate too slow.
scorching or
2. Dull knives/inserts.
burn marks on
workpiece.
Workpiece is 1. Workpiece not held with even pressure
concave or convex
against outfeed table during cut.
along its length after
2. Workpiece excessively bowed or warped,
jointing.
not suitable for jointing.
3. Tables are not parallel with cutterhead and
each other.
Workpiece edges 1. Fence not square to table(s); fence tilt
not square; tapered
unlocked.
cut produced.
2. Inserts not consistently tightened/torqued.
3. Warped infeed or outfeed table.
Model G0855/G0856 (Mfd. Since 02/19)
Possible Solution
1. Completely loosen table lock (Page 5).
2. Loosen/reset table stop (Page 35).
3. Adjust table gibs (Page 46).
1. Align outfeed table with cutterhead knife/insert at
top dead center (Page 48).
2. Adjust height of knives evenly with outfeed table
(Page 43).
3. Reduce/eliminate downward pressure on trailing
end of workpiece as it leaves cutterhead.
1. Align outfeed table with cutterhead knife/insert at
top dead center (Page 48).
1. Ensure workpiece is suitable for jointing (Page 28).
2. Turn workpiece 180° before feeding again.
3. Reduce feed rate.
4. Reduce depth of cut.
5. Sharpen/replace knives (Page 43); rotate/replace
inserts (Page 45).
6. Clear blockages, seal leaks, move machine closer
to dust collector, upgrade dust collector.
1. Ensure wood moisture content is less than 20%.
Allow to dry if necessary.
2. Sharpen/replace knives (Page 43); rotate/replace
inserts (Page 45).
1. Replace knives (Page 43); rotate/replace inserts
(Page 45).
2. Tighten/torque all inserts consistently when rotating/
replacing (Page 45).
3. Remove inserts, properly clean mounting pocket
and re-install (Page 45).
1. Reduce feed rate.
2. Properly adjust knives (Page 43).
3. Remove inserts, properly clean mounting pocket,
and re-install (Page 45).
1. Increase feed rate.
2. Sharpen/replace knives (Page 43); rotate/replace
inserts (Page 45).
1. Apply even downward pressure against workpiece
through entire travel along outfeed side during cut.
2. Ensure workpiece is suitable for jointing (Page 28).
3. Check/Adjust table parallelism (Page 47).
1. Square fence to table(s) (Page 49); lock fence.
2. Tighten/torque all inserts consistently when rotating/
replacing (Page 45).
3. Regrind/replace table.
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