TROUBLESHOOTING

SAW IS SPALLING AND RAVELLING CUT

-Check to see if the diamond blade is worn out, glazed, warped or damaged.

-Insure skid plate moves freely up and down the entire shaft length without contacting the diamond blade.

-Check skid plate for excessive wear or gap around the diamond blade.

-Check skid plate for tension or loose mounts. Skid plates are preset at the factory.

-Check bottom of skid plate for metal burrs or irregularities.

-Insure skid plate is not twisted or bent.

-Check lexan covers for free movement up and down.

-Insure there is spring down pressure at each end of the skid plate.

-Do not twist or move the saw sideways while cutting.

-Check that the engine is running properly and at full throttle.

-Check belt and belt idler for proper tension.

-Insure the diamond blade is properly mounted and secured with clean flanges.

-Insure that the diamond blade is the correct specification for your area.

-Insure the slab is in clean with no debris that could raise the skid plate or saw while cutting.

-Use Husqvarna joint protectors at all cut intersections.

-Clean excess concrete debris from the blade block assembly.

-Check that the scrapers in the blade block are not bent or binding.

-Insure that the blade block shafts are not bent or damaged.

-Check that the front diverter in the blade block is not bent and the diverter legs are not contacting the concrete.

ENGINE RUNS ROUGH, BACK FIRES OR CAN NOT REACH FULL SPEED

-Check if there is fuel in the tank and it is the correct fuel. Make sure there is no water in the fuel.

-Check that the spark plugs are clean and properly gapped.

-Check that choke is in the “off” position after engine is warm.

-Check that air filter is not dirty or plugged.

-Check that the throttle lever is properly set.

-Check for correct oil level. Engine oil alert system may function intermittently if oil level is not within the correct range.

ENGINE WILL NOT START

-Check if the fuel valve is turned to the “on” position.

-Check if there is fuel in the tank and it is the correct fuel. Make sure there is no water in the fuel.

-Check that the spark plug wires are connected to the spark plugs.

-Engine is flooded. Adjust the choke per the engine owner’s manual.

-Check that the air filter is not dirty or plugged.

-Check the choke is in the “on” position for cold starts. Adjust the choke per the engine owner’s manual.

-Check that the blade shaft rotates freely and no concrete has built up in the blade block.

-Check if the kill switch is in the “ON” position.

-Oil level is too low. Engine is equipped with an oil alert system that will not let the engine start unless the engine oil level is within the correct range.

SAW PULLS TO ONE SIDE WHILE SAWING

-Check front and rear guide is properly aligned with the center of the diamond blade.

-Check to see if diamond blade is worn out, glazed, warped or damaged.

-Do not twist or move the saw sideways while cutting. Make gradual changes in pressure on the handle bar to control the saw in the cut.

-Insure that all wheels rolls freely and smoothly.

-Do not force the saw. Allow the diamond blade to cut at its own rate of speed.

-Check the skid plate for damage or burrs.

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Husqvarna 450 manuel dutilisation Troubleshooting, SAW is Spalling and Ravelling CUT