Model G0939/G0940 (Mfd. Since 12/20)
-39-
Calibrating Headstock
Elevation Scale
Although correctly set at the factory, the scale can
be adjusted for accuracy if it becomes necessary.
Tools Needed
Qty
Phillips Screwdriver #2 ...................................... 1
Scrap Piece of Stock ......................................... 1
Calipers ............................................................. 1
To calibrate scale:
1. Plane scrap piece of stock until it is flat on
both sides and has even thickness along its
length.
Note: Turn scrap board over between each
pass to make surfaces parallel.
2. Use calipers to measure board thickness.
3. If there is a discrepancy between board thick-
ness and reading on elevation scale, loosen
Phillips head screws shown in
Figure 40,
adjust position of red line to indicate correct
thickness, then tighten screws.
The cutterhead/table parallelism has been cor-
rectly set at the factory. However, it can be re-
adjusted for accuracy if the cutterhead assembly
shifts over time.
Tools Needed
Qty
Hex Wrench 4mm .............................................. 1
1
1
⁄
2
" x 12" Piece of Stock ................................... 2
To adjust cutterhead/table parallelism:
1. DISCONNECT MACHINE FROM POWER!
2. Install knives/inserts (refer to Adjusting/
Replacing Knives on Page 27 for detailed
instructions).
3. Place both pieces of stock on either side of
table, and lower headstock until cutterhead
just touches (see
Figure 41).
Note:
Having wood blocks at an even height
is critical to the accuracy of your overall
adjustments. For best results, square stock
with a jointer and table saw before using as a
gauge.
12"
Wood Blocks
Cutterhead
Figure 41. Checking cutterhead parallelism.
Adjusting Cutterhead/
Table Parallelism
Figure 40. Elevation scale components used to
calibrate thickness reading.
Phillips Head
Screws
Scale Indicator
Line
