Powermatic PJ1696 - Manual (Page 19)

BLADE INSERTS
When blade inserts become dull enough so that it
is noticeable when cutting, they should be turned
over or replaced entirely. A sharp blade works
easier and results in longer blade life. The penalty
paid for a dull blade is less blade life and greater
wear and tear on all parts of the machine.
An advantage of the helical style cutterhead is that
if knife inserts develop nicks, these inserts can be
individually flipped or replaced without the need to
disturb the other inserts.
If the jointer is used often, keeping a spare set of
blade inserts on hand is recommended.
Gum and Pitch which collect on the inserts cause
excessive friction as the work continues, resulting
in overheating of the inserts, less efficient cutting,
and consequent loss of blade life. Use "Gum and
Pitch Remover" or oven cleaner, to wipe off the
inserts.
TROUBLE-SHOOTING (PJ1696 Jointer)
PROBLEM POSSIBLE CAUSE SOLUTION [with page #]
Finished stock is concave
Knife tip is higher than outfeed table. Raise outfeed table until it is on the
on the end. same level with tip of knife. [11]
Back end of stock is thicker
Knife tip not leveled with outfeed table. Adjust outfeed table to align with
than front side. knife tip. [11]
Finished stock is concave
Both tables have too much end fall. Raise table ends by adjusting the
in the middle. screws at the four corners under
the tables. See Figure 27 below.
Two tables are not in line.
Adjust using the screws shown in
Figure 28. (Remove protective
caps to access screw).
Ends of finished stock are
Table ends are raised higher than the Lower both table ends with the
cut more than the middle. middle. adjustment screws. See Figure 27.