Troubleshooting - Porter-Cable 121 Instruction Manual

2. Adjust the feed guides (A) and (B)
Fig. 6, so that they are parallel to
the sanding drum (C).
3. Loosen the in-feed and out-feed
guides (A) and (B) Fig. 6 with a
3/16" hex wrench.
4. Place a straight edge on the
sanding drum (C) Fig. 6. Tap the
in-feed and out-feed guides (A
and B) until the guides and the
sanding drum (C) are resting on
the straight edge (Fig. 6), and are
parallel.
5. Tighten the 3/16" bolt to hold the out-feed guide (B) Fig. 6 in place.
6. Set the in-feed guide (A) Fig. 6 for the amount of material that you want
to remove.
the tool. It can cause damage to the rubber sanding drum.
NOTE: Check the guide adjustment after changing sanding drums.
EDGE GUIDE OPERATION
When using the edge guide, always
start sanding from the end or corner
of the workpiece for even sanding.
Start with the front feed guide against
the workpiece and gradually feed the
tool into the surface (Fig. 7).
For assistance with your tool, visit our website at www.porter-cable.com for a list
of service centers or call the Porter-Cable help line at 1-888-848-5175.
Do not try to remove an excessive amount of material with

TROUBLESHOOTING

B
Fig. 7
12
A
C
Fig. 6