Grizzly G9953ZX - Manual (Page 70)

-68- Ultimate Series Jointers
SYMPTOM
Lines or ridges in on board.
Uneven knife marks on
board.
Wavy surface or chatter
marks on board.
Board edge is concave or
convex after jointing.
Tables are difficult to adjust.
POSSIBLE CAUSE
1. Nicked knife or carbide cutter.
1. One or more knives out of alignment.
1. Board being fed too fast.
2. Knives set incorrectly.
1. Board not held with even pressure on
infeed and outfeed table.
2. Board was too uneven start.
3. Board has excessive bow or twist along
its length.
4. Insufficient number of passes.
5. Board length exceeds jointer capacity.
1. Table lock is partially engaged.
CORRECTIVE ACTION
1. Sharpen the knife or rotate the carbide cutter.
1. Reset the knives in the cutterhead, using the knife setting gauge.
See
pages 30-31.
1. Slow down the feed rate and feed consistently. DO NOT stop or
hesitate during feeding.
2. Inspect and sharpen the cutterhead knives. Reset knives in cut-
terhead, using the knife setting jig. See
pages 30-31.
1. Hold board with even pressure as it moves through the cutter-
head. See
page 24 for more details about the proper method for
edge jointing.
2. Take partial cuts to remove the extreme high spots before doing
a full pass.
3. Surface plane one face so there is a good surface to position
against the fence.
4. It may take 3 to 5 passes to achieve a perfect edge, depending
on the starting condition of the board and the depth of cut.
5. Shorten the board to a length no more than 3X the combined
length of the jointer tables.
1. Completely loosen the table lock.
Troubleshooting Guide
Disconnect power to the
machine when perform-
ing any maintenance or
repairs. Failure to do this
may result in serious
personal injury.