Harbor Freight Tools 31849 Biscuit Joiner User Manual


 
Step 4) If the knife is not aligned at one or both sides, loosen Bolts (60) which hold the Knife Lock Bar
(61). Use a knife setting gauge (not included) to make sure that the knife at each end of the
cutter is the same height. Repeat for the next two (2) knives as is fitting. If the knives are set
to low, this will result in a curve in your wood. If the knives are too high, it may result in a
gouged cut in your work piece.
Adjusting Table Gibs
“Gibs” are adjusted at the factory and should not need adjusting. Adjustments should be made by a qualified
service technician. If adjustment is required, please follow the steps laid out below after unplugging the
electrical connection.
Step 1) Loosen all the gib adjusting screws, making sure that the Table Lock Screw (#45) is loose.
Step 2) Retighten the gib screws beginning with the lowest first and moving to the top gib. Push up
gently on the outside edge of the Table being adjusted.
Warning: Do not leave the screws too loose. It should take some effort to move the Table up or down.
Removing or Replacing Knives
Make certain that the Jointer is UNPLUGGED and OFF. Adjustments should be made my a qualified service
technician. Be extremely careful when handling the knives! Make certain that the Bars are free of dirt and
debris.
Step 1) Move the Fence (#11) to the rear of the Jointer and remove the Cutterhead Guard.
Step 2) With a wrench, loosen the four (4) Screws (#12) in each knife slot. Remove each Knife (#62)
and the Knife Lock Bars (#61).
Step 3) Replace the Knives (#62) in the groove so that the rear edge of the bevel is 1/16” from the
surface of the Cutterhead.
Step 4) Slide the Lock Bar (#61) into place. Tighten down the Screws (#12) in each slot.
Warning! Knife edges are very sharp. Be very careful when moving knives. Refer to Operator Safety
Instructions at the beginning of this manual.
Step 5) The surface of the Cutterhead and the blade must be parallel, as well as the blade to the Bar.
All three should be parallel to each other.
Step 6) Correct adjustment will ensure that the cutting edge of the knife extends out at
.060" from the cutterhead diameter.
Step 7) Carefully turn the cutterhead, until its round side is showing on top. Place a .060" feeler
gauge on the cutterhead. With a straight edge on the rear table adjust the height of the rear
table to .060".
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