Jet JBM-5 Operating Instructions And Parts Manual

Also see for JBM-5: Operating instructions and parts manual Operating instructions

Contents

810.0 Adjustments10.1 On-Off switchThe switch (inset photo, Figure 10-1) has a safetykey that, when pulled out, allows the switch to belocked in OFF position. The key must be reinsertedto start machine.Figure 10-110.2 Handle adjustmentThe spring-loaded handle can be adjusted forleverage and comfort. Pull handle away from headand reposition it on shaft. See Figure 10-2. Makesure handle re-engages clutch block.Figure 10-210.3 Fence adjustmentThe fence can be moved in and out by looseninglocking handle (J 1 , Figure 10-3) on the column.Always retighten handle before operating mortiser.Figure 10-310.4 Hold down adjustmentThe hold down (I, Figure 10-3) should be adjustedso it just touches top of workpiece and allows theworkpiece to slide left or right. The hold down canalso be taken off and turned over for a thickerworkpiece. To adjust hold down, loosen wing screw(I 1 , Figure 10-3).10.5 Depth stop rod adjustmentThe depth stop rod (A, Figure 10-1) is used to limitthe depth of the chisel cut. Loosen handle (B,Figure 10-1) and lower head until bottom of chiselis at required depth. Lower depth stop rod until it isat rest against the base. Re-tighten handle (B).10.6 180° Head rotationThe column can be rotated 180º to permit mortisinglarge workpieces off the table.The base must be secured tothe table or workbench when using head inrotated position.1. Using a 4mm hex wrench, remove four screws,lock washers and flat washers (C, Figure 10-1)Note: Only one screw is visible in Figure 10-1.2. Rotate head and column to opposite direction.3. Reinstall the four screws, lock washers and flatwashers.10.7 Chuck key holderStore chuck key by pushing into holder (D, Figure10-1).10.8 Bit shank lengthChisel bits come with long or short shanks (Figure10-4) depending on manufacturer. If using a bitwith short shank, the spindle extension adaptormust be installed; see sect. 10.9. If using a bit withlong shank, proceed to sect. 10.10.