Makita 5090D Instruction Manual

Also see for 5090D: Parts list Parts Breakdown Instruction manual

Contents

5aware of the time it takes for the blade to stopafter switch is released.6. NEVER hold piece being cut in your handsor across your leg. It is important to supportthe work properly to minimize body exposure,blade binding, or loss of control.7. Hold tool by insulated gripping surfaceswhen performing an operation where thecutting tool may contact hidden wiring.Contact with a “live” wire will also makeexposed metal parts of the tool “live” andshock the operator.8. When ripping always use a rip fence orstraight edge guide. This improves theaccuracy of cut and reduces the chance forblade binding.9. Always use blades with correct size andshape (diamond vs. round) arbor holes.Blades that do not match the mounting hard-ware of the saw will run eccentrically, causingloss of control.10. Never use damaged or incorrect bladewashers or bolts. The blade washers andbolt were specially designed for your saw, foroptimum performance and safety of opera-tion.11. Causes and Operator Prevention of Kick-back:Kickback is a sudden reaction to a pinched,bound, or misaligned saw blade, causing anuncontrolled saw to lift up and out of theworkpiece toward the operator.When the blade is pinched or bound tightly bythe kerf closing down, the blade stalls and themotor reaction drives the unit rapidly backtoward the operator.If the blade becomes twisted or misaligned inthe cut, the teeth at the back edge of theblade can dig into the top surface of the woodcausing the blade to climb out of the kerf andjump back toward the operator.Kickback is the result of tool misuse and/orincorrect operating procedures or conditionsand can be avoided by taking proper precau-tions as given below:Maintain a firm grip on the saw and posi-tion your body and arm in a way thatallows you to resist KICKBACK forces.KICKBACK forces can be controlled by theoperator, if proper precautions are taken.When blade is binding, or when interrupt-ing a cut for any reason, release the trig-ger and hold the saw motionless in thematerial until the blade comes to a com-plete stop. Never attempt to remove thesaw from the work or pull the saw back-ward while the blade is in motion or KICK-BACK may occur. Investigate and takecorrective actions to eliminate the cause ofblade binding.When restarting a saw in the workpiece,center the saw blade in the kerf and checkthat teeth are not engaged into the mate-rial. If saw blade is binding, it may walk up orKICKBACK from the workpiece as the saw isrestarted.Support large panels to minimize the riskof blade pinching and KICKBACK. Largepanels tend to sag under their own weight.Supports must be placed under the panel onboth sides, near the line of cut and near theedge of the panel as shown in Fig. 1.To minimize the risk of blade pinching andkickback. When cutting operation requiresthe resting of the saw on the workpiece, thesaw shall be rested on the larger portion andthe smaller piece cut off.Fig. 1 To avoid kickback, do support board orpanel near the cut.