Delta 37-071 User Manual

16

Disconnect the machine from the 

power source before making any 

adjustments!

Jointer knives are dangerously sharp. 

Use extreme caution when inspecting, 

removing, sharpening, or replacing knives into the 

cutterhead. Failure to comply may cause serious injury. 
The DELTA

®

 37-071 6” Bench Jointer uses two 

individual knives. Should you notice a significant 

decrease in the performance of your jointer, it may be 

necessary to replace the knives. To do this, follow these 

steps:

1.  Place a scrap piece of wood between the spring-

loaded cutter guard and fence in order to fully 

expose the cutterhead.

2.  Carefully and slowly rotate the cutterhead by hand 

until the clamp bar and four clamp screws (A) are 

accessible. See Figure 19.

3.  Unscrew the clamp screws and remove the clamp 

bar.

Cutterhead knives are sharp. Use 

caution when handling cutterhead 

knives. Use gloves to reduce the risk of injury.

4.  Carefully lift the knife from the cutterhead, taking 

care to note its proper orientation to the cutterhead. 

5.  Repeat Steps 2-4 for the second cutterhead knife. 
6.   Clean the cutterhead thoroughly before installing 

new knives or re-installing sharpened knives. 

7.  Install the new or re-sharpened knife and the clamp 

bar in the cutterhead. Slightly tighten each of the 

clamp screws, making sure to follow the sequence 

shown in Figure 20. 

NOTE: Failure to follow the proper sequence for 

tightening the clamp screws may result in the position 

of the knife being altered which can affect the 

performance of the tool. 

8.  Repeat Step 7 for the second cutterhead knife. 
9.  Check the alignment on the knives to the surface 

of the outfeed table as described in the section 

Align Cutterhead to Outfeed table, on page 10. If 

necessary, rotate the two jack screws on either end 

of the cutterhead knife in order to ensure the knife is 

parallel to the outfeed table.

1.  Periodically blow out all air passages with dry 

compressed air. All plastic parts should be cleaned 

with a soft damp cloth. NEVER use solvents to 

clean plastic parts. They could possibly dissolve or 

otherwise damage the material.

2.  Periodically check tightness on all other hardware 

and listen for any unusual vibrations as you work as 

these may be a sign of loose hardware.

10. Perform final tightening on each of the four clamp 

screws uses the proscribed sequence in Figure 19. 

11. Remove the scrap wood block and return the 

cutterhead guard to original operating position. 

Re-align the fence as needed and test the jointer 

on a piece of scrap stock.