Porter-Cable 3802 Adjusting the Tension of Cuttinghead Return Spring, Adjusting Blade Guard

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Correct adjustment provides for a good snug sliding fit between these two parts. This adjustment should not be so tight that it restricts the tilting movement of the trunnion (A) when bevel cutting, or so loose that it affects the accuracy of the saw cut.

ADJUSTING THE TENSION OF CUTTINGHEAD RETURN SPRING

The tension of the cuttinghead return spring has been adjusted at the factory in order that the cuttinghead returns to the up position after a cut has been made. To re-adjust the spring tension, turn adjusting screw (A) Fig. 32, clockwise to increase or counterclockwise to decrease the spring tension.

ADJUSTING SLIDING FIT BETWEEN CUTTINGHEAD ARM AND TRUNNION

After a long period of time it may become necessary to adjust the sliding fit between the cuttinghead arm (B) Fig. 32, and the trunnion (C) by tightening nut (D). Correct adjustment is a good snug sliding fit between these two parts. This adjustment should not be so tight that it restricts the sliding movement of the cuttinghead arm (B) or so loose that it affects the accuracy of the saw cut.

C

D

A

B

C

B

A

Fig. 32

Fig. 33

ADJUSTING DOWNWARD TRAVEL OF SAW BLADE

1.DISCONNECT THE SAW FROM THE POWER SOURCE.

2.The downward travel of the saw blade can be limited to prevent the saw blade from contacting any metal surfaces of the machine. This adjustment is made by loosening locknut (A) Fig. 33, and turning adjusting screw

(B) in or out until other end of screw (B) contacts stop (C) at the full downward travel of the saw blade.

3.When making this adjustment, MAKE SURE THE MACHINE IS DISCONNECTED FROM THE POWER SOURCE and lower the blade as far as possible. Rotate the blade by hand to make certain the teeth do not contact any metal surfaces and adjust if necessary. After adjustment is completed, tighten locknut (A) Fig. 33.

A

B

ADJUSTING BLADE GUARD

After an extended period of time the movable blade guard (A) Fig. 34, might become sloppy and move erratically when the cuttinghead is lowered. This can be easily corrected by slightly tightening nut (B) until the lower blade guard (A) moves smoothly.

Fig. 34

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Contents Instruction Important Safety Instructions Read and Follow ALL InstructionsAdditional Safety Rules for Compound Miter Saws Attempt to Repair Power CordMotor Replacement PartsPower Connections Extension Cord SelectionAssembly Moving Cuttinghead to the UP Position Sliding FIT Between Movable Table and Base Moving Table to the 0 Degree CUT-OFF PositionAttaching Extension Table and Fence Slide Page Starting and Stopping Machine Attaching Dust BAGFastening Machine to Supporting Surface Rotating Table for Miter Cutting Locking Switch in the OFF PositionAdjusting Sliding FIT Between Movable Table and Base Tightened if NecessaryAdjusting Fence 90 Degrees to Blade Table Hazard AreaAttaching Optional Work Clamp Tilting Cuttinghead for Bevel CuttingDisconnect the SAW from the Power Source Adjusting Sliding FenceAdjusting Chip Deflector Disconnect the SAW from the Power Adjusting 0 and 45 Degree Bevel Positive StopsAdjusting Sliding FIT Between Trunnion and Bevel Bracket SourceAdjusting Downward Travel of SAW Blade Adjusting the Tension of Cuttinghead Return SpringAdjusting Sliding FIT Between Cuttinghead ARM and Trunnion Adjusting Blade GuardCutting Aluminum Typical Operations and Helpful HintsAuxiliary Wood Fence While the Machine is RunningCutting Bowed Material Constructing Work Support ExtensionsCutting Crown Moulding Disconnect Machine from the Power Source Changing the BladeService and Repairs Brush Inspection and ReplacementKeep Tool Clean Failure to StartPage Delta Service Centers