Removing And Installing Planer Knives - Jet JWP-12DX Owner's Manual

The table and the cutterhead should be adjusted
parallel at the factory. Only proceed with this
adjustment if absolutely necessary.
1. Carefully turn the planer over to expose the
bottom.
2. Remove the snap ring (A, Fig. 12).
3. Disengage the horizontal shaft gear (B, Fig.
12) from the vertical shaft gear (C, Fig. 12).
When disengaging the gears, do not
rotate the horizontal shaft gear. This will
disturb the alignment of the cutter and
make the height scale inaccurate.
If the left side of the cutterhead is higher
than the right side, hand rotate the left
vertical shaft gear clockwise in one gear
tooth increments.
If the left side of the cutterhead is lower
than the right side, hand rotate the left
vertical shaft gear counter-clockwise in one
gear tooth increments.
4. When parallel alignment
cutterhead and table is reached, re-engage
the gears and replace the snap ring.
5. Store the wood gauge for future use.

Removing and Installing Planer Knives

WARNING

Disconnect the planer from the power
source before making any repair or
adjustment!
Planer knives are extremely sharp! Handle
with care to avoid injury!
Failure to comply may cause serious injury!
CAUTION

Both planer knives must be sharpened at the
same time. Sharpening only one may throw
the cutterhead out of balance and cause
cutterhead ball bearing failure.
The cutterhead has two planer knives that will
eventually need to be removed for sharpening,
or replacement. Note: the knives are double
edged so they can be rotated one time before
needing to be sharpened. The blades should be
sharpened at a 42º angle. To remove knives:
1. Disconnect the machine from the power
source.
2. Lower the cutterhead as low as it will go.
3. Remove two hex socket cap screws (B, Fig.
4. Set aside the chip guard.
5. Loosen seven screws (A, Fig. 14) and
6. Loosen the second set of seven screws and
between the
12
13) and two lock washers holding the chip
guard (A, Fig. 13) to the planer.
remove the first planer knife.
remove the second knife.