(You can also use any 3mm diameter tool, such as a hex wrench or drill bit for this purpose.)
9.Insert the screws for the first gib, turning them with the
10.Put the next gib in place, and repeat the process. See Figure 19. Use the adjustment pins and make sure the wings of the knife are completely in the cutterhead groove. Continue sequentially from one end of the cutterhead to the other end. Again, only make the screws snug enough to hold the knife in the groove.
11.When all gibs are loosely installed for one knife, rotate the cutterhead and repeat the process for each of the remaining two knives, working from one end to the other.
12.Now fully tighten all gib screws on one knife. Do this in sequential order, beginning at one end of the knife and working your way across to the other end, tightening each screw in turn.
13.Tighten all gib screws on the other two knives in the same fashion, until all gib screws on the cutterhead are firmly tightened.
(NOTE: The purpose of this incremental tightening process is to prevent any slight deflection or warpage of the cutterhead, and to ensure that the knife is completely seated into the groove.)
After installing knives, check again carefully. Make certain all gib screws are tightened securely. Failure to heed may result in personal injury.
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Replacing or Rotating Knife Inserts (Model 15HH only)
The knife inserts on the model 15HH are four- sided. When dull, simply remove each insert, rotate it 90° for a fresh edge, and
Use the provided driver with the socket adaptor to remove the knife insert screw. See Figure 20.
NOTE: A T25 adaptor or driver can round out the screw head. Always use a
Figure 20 – Model 15HH only
It is advisable to rotate all inserts at the same time to maintain consistent cutting. However, if one or more knife inserts develops a nick, rotate only those inserts that are affected.
Each knife insert has an etched reference mark so you can keep track of the rotations.
IMPORTANT: When removing or rotating inserts, clean saw dust from the screw, the insert, and the cutterhead platform. Dust accumulation between these elements can prevent the insert from seating properly, and may affect the quality of the cut.
To install new knife inserts:
1.Before installing each screw, lightly coat the screw threads with machine oil and wipe off any excess.
2.Position knife insert and move it back and forth to verify there are no burrs or dirt.
3.Hold insert away from the back of the seat (pull slightly toward yourself if facing the cutting edge) and allow the screw to pull insert into position. Note: A slight offset between screw hole and hole in knife insert is normal. Do not position insert directly over screw hole, as it could ride up on the back of the seat and potentially cause cracking of the tip.
4.Securely tighten each screw which holds the knife inserts before operating the planer.
IMPORTANT: Maximum torque for tightening the screws is 45 to 55 inch pounds (3.75 to 4.6 foot pounds).
Make sure all knife insert screws are tightened securely. Loose inserts can be propelled at high speed from a rotating cutterhead, causing injury.
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