Trouble Shooting Guide - Husqvarna FS 520 Operator's Manual
Walk-behind concrete saw
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Also See for FS 520:
- Operator's manual (132 pages) ,
- Spare parts (29 pages) ,
- Operator's manual (44 pages)
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Engine Will Not Start:
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Contamination, or water ice in fuel system.
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Engine has no power or runs unevenly. Air lter Clogged.
Diamond Blade Trouble Shooting:
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Loss of Tension in Diamond Blade
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Cracked Blade Segments
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TROUBLE SHOOTING GUIDE
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Blade being used on misaligned saw. Check for proper saw alignment.
Blade is excessively "hard" for material being cut, creating stress on steel blade
center. Check that blade is correct for material being cut.
Different diameter or undersize blade anges creates uneven pressure on blade
center. Use proper size ange on each side of blade. Never use worn or dam-
aged anges.
Blade operated at improper speed (R.P.M.). Make certain blade shaft is turning at
the proper speed (R.P.M.) for blade size. Check R.P.M. using a tachometer.
Blade improperly mounted on arbor. Could become bent when anges are tight-
ened.
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Overheated blade, detected as "blue" color on steel center. Check that water
supply is adequate and not blocked.
Saw is twisted while cutting. Saw only in a straight line.
Blade Bore is worn to an eccentric shape (ovalized). Replace worn blade and
worn spindle.
Segment knocked off during mounting our transport. Avoid rough handling of
diamond blade. Never transport the machine with the diamond blade mounted.
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Overheated blade, detected as "blue" color on steel center. Check that water
supply is adequate and not blocked.
Saw is twisted while cutting. Saw only in a straight line.
Blade is too "hard" for material being cut. Use "softer" blade speci cation.
Blade operated at improper speed (R.P.M.). Make certain blade shaft is turning at
the proper speed (R.P.M.) for blade size. Check R.P.M. using a tachometer.
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(DD) (FS 513) are in "ON" position. Machine Stop (AA) should
be pulled outward from cowl, and Engine Start Switch (DD)
turned to "1" (ON) position.
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Clean tank, fuel lines and carburetor. Fill tank with fresh fuel.
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Clean or replace the air lter.
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DO NOT use damaged diamond blades!
Death or injury could occur if machine is op-
erated using damaged diamond blades!
A
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Machine Stop (AA) and Engine Start Switch
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WARNING!
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