Bosch GTS1041A Operating/Safety Instructions Manual page 23

CHECKING RIVING KNIFE
ALIGNMENT
Check riving knife align-
ment to blade periodically
and make adjustments as necessary. Improp-
erly aligned riving knife may result in work piece
instability, loss of control, and KICKBACK. If the
riving knife is misaligned and cannot be adjusted,
do not attempt to operate the saw. Have a quali-
fied service technician perform riving knife align-
ment.
1. Check that the blade is properly aligned paral-
lel with the miter gauge groove per instructions
listed under "Adjusting Blade Parallel to Miter
Gauge slots" (page 20) and adjust the blade if
necessary. Check that the rip fence is aligned
with the blade (see instructions listed under
"Aligning Rip Fence" , page 21) and adjust the
rip fence if necessary.
2. Raise the blade to the full height (up) position.
Raise the riving knife to its full up position (see
instructions listed under "Positioning The Riv-
ing Knife" , page 15). Remove the Anti-Kickback
Pawls and Guard Assembly from the riving
knife. Remove the insert plate.
3. Place the rip fence 3 on the left side of the table.
Carefully move the rip fence against the blade
so that the rip fence is parallel to the blade and
3
1600A009XC 09-15.indb 23
just touches the tips of the saw teeth. Lock the
rip fence and make sure the blade at the front
and back is still touching the rip fence (Fig 32).
4. Using the rip fence as a guide, check the riv-
ing knife alignment with the plane of the saw
blade. Since the riving knife is thinner, by ap-
proximately three thicknesses of paper on each
side, than the width of the blade's KERF (Fig
31) you must make a temporary paper "spac-
ing gauge" . Make two folds in a small piece
(6" X 6") of ordinary newspaper making three
thicknesses. Place the paper spacing gauge 5
between the riving knife 1 and the rip fence 3
(Fig 33).
5. Repeat step 4 with the rip fence 3 on the right
of the blade and check with paper spacing
gauge 5 (Fig. 35).
6. If the paper spacing gauge does not fit be-
tween the rip fence and the riving knife per
steps 4 and 5 above, the riving knife is not
correctly aligned with the blade and must be
adjusted. If the riving knife needs adjustment
proceed to section Adjusting Riving Knife. If the
riving knife is correctly aligned with the blade
then no adjustment is necessary.
NOTE: The Riving Knife has been properly
aligned at the factory - Check the alignment be-
fore making any adjustments.
Fig. 32
1
23
5
3
Fig. 33
1
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