Porter-Cable 3807 Adjusting Blade Guard, Adjusting the Tension of Cuttinghead Return Spring

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A

B

E

D

C

Fig. 32

Fig. 33

ADJUSTING BLADE GUARD

1.After an extended period of time, the movable blade guard (A) Fig. 32, 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.

2.As soon as the cuttinghead begins to lower, the lower blade guard (A) Fig. 32, should begin to move. If it does not, simply loosen screw (C) Fig. 33, and rotate eccentric (D) so that the eccentric (D) is contacting the actuating arm (E) when the cuttinghead is in the top position. Then tighten screw (C).

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. If it ever becomes necessary to re-adjust the spring tension, proceed as follows: Turn adjusting screw (A) Fig. 34, 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. 34, and the trunnion (C) by tightening nut (D). Correct adjustment is when a good snug sliding fit is obtained between these two parts. This adjustment should not be too tight that it restricts the sliding movement of the cuttinghead arm (B) or too loose that it affects the accuracy of the saw cut.

ADJUSTING DOWNWARD TRAVEL

OF SAW BLADE

The downward travel of the saw blade was adjusted at the factory to prevent the saw blade from contacting any metal surfaces of the machine. If an ajustment is ever necessary to limit the downward travel of the saw blade for operations such as dado cutting (see section of manual on DADO CUTTING ), loosen wing nut (E) Fig. 34, and make adjustment by turning adjusting screw (F). Tighten wing nut (E) after adjustment is completed.

LOCKING CUTTINGHEAD GUIDE RODS

The cuttinghead guide rods (G) Fig. 34, can be locked in place in order to use the saw as a conventional miter saw (using the saw as a chop saw instead of a sliding saw) by tightening lock knob

(H). When using the saw as a chop saw, the cuttinghead should be all the way to the rear position before locking in place.

A

BD

C F

E

H

J

L

K G

Fig. 34

ADJUSTING SLIDING FIT BETWEEN GUIDE RODS AND TABLE ASSEMBLY

To adjust the sliding fit between guide rods (G) Fig. 34, and table assembly (J), remove lock knob (H) and loosen locknut (K). With wrenches provided, hold locknut (K) while turning adjusting nut (L) clockwise to increase or counterclockwise to decrease the sliding action of the guide rods (G). This adjustment should not be too tight that itrestricts the sliding movement of the rods or too loose that it affects the accuracy of the saw cut. When correct adjustment is made, hold adjusting nut (L) and tighten locknut (K) with wrenches provided. Replace lock knob (H). Periodically lubricate guide rods (G) using a light oil or spray lubricant to keep the guide rods (G) sliding smoothly.

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Contents Compound Important Safety Instructions Read and Follow ALL InstructionsAdditional Safety Rules for Compound Slide Miter SAW S Replacement Parts When servicing use only identical replacement partsTo R Extension Cord SelectionPower Connections Operating InstructionsR E W O R D PackingMoving Cuttinghead To the Rear Position Raising the CuttingheadAssembly Assembling Dust Elbow and Dust BAGMoving Table to the 0 Degree CUT-OFF Position Locking Switch in the OFF Position Assembling Work ClampStarting and Stopping Machine Rotating Table For Miter CuttingAdjusting Sliding FIT Between M O Vable Table and Base Adjusting Fence 90 Degrees to BladeTable Hazard Area Work Clamp Operation Tilting Cuttinghead for Bevel CuttingIs in the up position as shown Adjusting Sliding FIT Between Trunnion and Bevel Bracket Adjusting 90 and 45 Degree Bevel Positive STO P SAdjusting Blade Guard Adjusting the Tension of Cuttinghead Return SpringAdjusting Sliding FIT Between Cuttinghead ARM and Trunnion Adjusting Downward Travel SAW BladeUsing the SAW on SAW Horses Using SAW with 4 ExtensionsTo O L STO R a G E Fastening the SAW to a W O R K B E N C HCorrect Operating Procedure for Slide Cutting E R AtionBut do not turn the saw on at this time Using SAW AS a C H O P S AW Dado CuttingCutting Crown Moulding Maintenance Changing the BladeBrush Inspection and Replacement Foreign substanceFlats on the arbor Keep to O L Clean Service and RepairsFailure to Start Delta Service Centers