Husqvarna 371K manual Cutting blades, Diamond blades, Using diamond blades, Dry diamond blades

SAFETY INSTRUCTIONS

Cutting blades

Type of cutting blades

Check that the blade is approved for the same or higher speed according to the aproval plate of the engine. Do not exceed the maximum working speed stated on the blade.

Damage

•Ensure the blade it not cracked or damaged in any other way.

• Test the blade by hitting it gently with a piece of wood. If the blade does not give a full-sounding ring then it is damaged.

• Never use a blade that has fallen on the floor.

Assembly

•Check that the blade is fitted correctly and is secure.

•Follow all specifications in the table below.

Specifications for fitting blades

Standard blades	inches	.787	7/8	1
centre hole (spindle)	mm	20	22,2	25,4
Reducing bush*	Max. thickness	Blade thickness
	Min thickness	3 mm (1/8")
Backing pad	Material	Highly compressible,
(Must be used)		e.g. blotting paper
	Max. thickness	0,5 mm (.020")
Spindle hole/	Play	0,2 mm (.010")
drive shaft
Flange tightening	The blade does not slip, flange not bent
Blade/guard	Check that the blade runs free of the
	guard.

*Plastic reducing bushes may only be used with abrasive blades. Do not use reducing bushes with diamond blades or tungsten carbide tipped blades. We recommend that the spindle is replaced so that it fits the blades to be used rather than using a reducing bush. Contact your service workshop for details.

Guard

Check that the guard is not crack or shows signs of any other damage. Clean the inside of the guard before fitting a new blade. Check that the guard can be adjusted and locked.

Diamond blades

Diamond blades are basically made in the same way as abrasive blades but are manufactured from industrial diamonds held together by a bonding agent.

DIAMOND BLADES TYPES AND USES

Diamond	General char-	Material	Water cooling
blade	acteristics
	Low cost per	All brickwork,	Increases the
	cutting opera-	reinforced	blade’s service
	tion. Less blade	concrete and	life.
	changes.	other
	Constant cutting	composite
	depth. Less	materials.
	dust.	NOT
		recommended
		for metal.

!WARNING!

Cool a diamond blade continually with water to prevent overheating, which can cause the blade to break and pieces being thrown off resulting in injury and damage.

Using diamond blades

Proceed as follows:

•Let the blade rotate in the same direction as the arrow indicates.

•Cool continually with water.

•Keep the blade sharp.

•Remove the blade when transporting the cutter.

Avoid:

•Running the blade in the wrong direction.

•Forcing a dull blade or wedging the blade into a cut.

•Transporting the cutter with the blade fitted.

•Letting the blade fall on the work piece.

Dry diamond blades

Dry diamond blades are a new generation of blades that do not require water cooling. However, the blades are still damaged by excessive heat. It is good economics to let the blade cool by simply lifting the blade from the cut every 30–60 seconds and let it rotate in the air, for 10 seconds to cool.

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