Husqvarna FS 413 manual Trouble Shooting Guide, Engine Will Not Start Cause Action

TROUBLE SHOOTING GUIDE

Engine Will Not Start:

Cause	Action
Electrical switches not in correct position.	Check that BOTH Emergency Stop Switch (AA) and Engine
	Start Switch (DD) are in “ON” position. Emergency Stop
	Switch (AA) should be pulled outward from cowl, and Engine
	Start Switch (DD) turned to “1” (ON) position.
Fuel valve closed.	Open the fuel valve.
Choke valve open.	Close the choke with cold engine.
Fuel tank empty.	Fill with fuel.
Contamination, or water ice in fuel system.	Clean tank, fuel lines and carburetor. Fill tank with fresh fuel.
Buildup on spark plug electrodes.	Check electrode gap and clean.
Engine has no power or runs unevenly. Air filter Clogged.	Clean or replace the air filter.

Diamond Blade Trouble Shooting:

Problem	Cause & Action
Loss of Tension in Diamond Blade	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 flanges creates uneven pressure on blade
	center. Use proper size flange on each side of blade. Never use worn or dam-
	aged flanges.
	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 flanges are tight-
	ened.
Segment Loss	Blade is too “hard” for material being cut. Use “softer” blade specification.
	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.
Cracked Blade Core	Blade is too “hard” for material being cut. Use “softer” blade specification.
	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.

		WARNING!
		DO NOT use damaged diamond blades!
		Death or injury could occur if machine is op-
		erated using damaged diamond blades!
Cracked Blade Segments	Blade is too “hard” for material being cut. Use “softer” blade specification.
	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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