OPERATION
OPERATION cont.
SAW BLADES
All saw blades need to be kept clean, sharp and properly set in order to cut efficiently. Using a dull blade places a heavy load on the saw and increases the danger of kickback. Keep extra blades on hand, so sharp blades are always available. Gum and wood pitch hardened on the blade slows the saw down. Use gum and pitch remover, hot water or kerosene to remove them. DO NOT use gasoline.
Fig. 4
Lower Blade Guard retracts automatically when cut is being made
Lower Blade Guard lever is in UP position when making a cut
Blade
KICKBACK…WHAT CAUSES IT AND WAYS TO HELP PREVENT IT (Fig. 5)
The Causes of Kickback
Fig. 5
Correct Blade Depth
(should not exceed
KICKBACK
BLADE GUARD SYSTEM (Fig. 4)
1. Kickback is a sudden reaction to a pinched, |
Fig. 6 |
The lower blade guard, attached to your circular saw, is there for your protection and safety. It should NEVER be altered for any reason. If it becomes damaged or begins to return slowly or sluggishly, DO NOT operate your saw until the damage has been repaired or replaced. ALWAYS leave the guard in its correct operating position when using the saw.
!CAUTION: NEVER use the saw when the guard is not operating properly. The guard should be checked for correct operation before each use. If you drop your saw, check the lower blade guard and bumper for damage at all depth settings before using.
NOTE: The guard is operating properly when it moves freely and then readily returns to the closed position. If for any reason your lower blade guard and bumper does not close freely, take the saw to your nearest Sears Repair Center for service before using it.
bound or misaligned saw blade, which |
causes an uncontrolled saw to lift up and |
out of the workpiece and toward |
the operator. |
2. When the blade is pinched or bound tightly |
by the kerf closing down, the blade stalls and |
the motor reaction drives the unit rapidly back |
towards the operator. |
3. If the blade becomes twisted or misaligned in |
the cut, the teeth at the back edge of the blade |
can dig into the top surface of the wood. This |
causes the blade to climb out of the kerf and |
jump back towards the operator. |
4. Sawing into knots or nails in the workpiece |
can cause Kickback. |
5. Sawing into wet or warped lumber can |
cause Kickback. (see Fig. 6a) |
6. Forcing a cut, or not supporting the workpiece |
correctly can cause Kickback. (see Fig. 6a) |
7. Kickback is a result of tool misuse and/or |
incorrect operating procedures or conditions. |
It can be avoided by taking the proper |
precautions, on page 19. |
Right |
Support |
Fig. 6a
Wrong Support
16
17
REV 10855
