Chain maintenance

Chain maintenance - safety

For the personal safety, it is of great importance, that the bar and chain combinations of so called low kick type are used and that the cutting equipment is maintained correctly.

Important notes:

●Chain tension

●Sharpening

●Lubrication

●Check - maintenance

Recommended cutting equipment for Husqvarna chain saws

Following is a list of recommended cutting equipment for saws below 3.8 cu. in.(62,3 cc) cylinder displacement. The combinations of powerhead, bar and chain have been investigated in accordance with the kickback requirements of ANSI B 175.1.

The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the corresponding maximum nose radius of a solid bar.

The following list is the chain saw manufacturers recommendations. There may be other combinations available, which will also achieve kickback protection.

As we are listing the maximum guide bar nose radius, you may use a guide bar with smaller nose radius then in our list. For guide bars of the same length, all sprocket-nose guide bars of the same pich and having the same number of sprocket teeth may be considered to have equivalent kickback energy. A hard nose bar having the same length and nose radius as a sprocket-nose bar may be considered to have equivalent or less kickback energy then the sprocket-nose bar.

Low kickback saw chain is a chain which has met the kickback performance requirements of ANSI B 175.1 safety requirements for gasoline-powered chainsaws when tested on the representative sample of chain saws below 3.8 cu.in. specified in ANSI B 175.1 These are marked with an asterix X in the table below. We recommend that you as replacement use the listed chains or “Lowkickback saw chains” which are available at your dealer.

NOTE: The second number in the Oregon part number indicate the thickness of the drive link. You are free to choose between 0.050” and 0.058” drive link for the corresponding bar. HUSQVARNA H30 and OREGON 33 indicates 0.050’’/1.3 mm

OREGON 34 indicates 0,058”/1.5 mm

Saw Chain		Length inch	Pitch inch	Max nose radius
Husqvarna H30		15, 16, & 18	.325	lot
Oregon 91SG ●		14 & 16	3/8	9t
Oregon 34SL	●	16 & 18	.325	lot
I Oregon 34LG	●	16 & 18	.325	1Ot

	Chain tension	I
	A too loose chain may jump off the bar and cause injuries, This is
	also the most frequent cause of chain problems. A too loose
	chain can also ruin the chain, bar and drive sprocket.
	Chain tension should be checked frequently during work and
	corrected if necessary.
	~ WARNING! Make sure that the engine is shut off.	1	a	(A
		1
	Tension the chain as tight as possible, but so it can still be
	pulled easily along the bar by hand.			/
	CAUTION! Check after tensioning by pulling the chain in the			/
o Oao-tj b-o) fo–oxo-o)frox:o	normal direction of rotation. Always wear gloves to protect your			i\/
	Ihands from injury.	I
	L	I	-—..
	L		-—..
	Chain lubrication
	Fill up the chain oil tank with chain oil each time you fuel, Never
4	run the chain dry. Insufficient oil may cause friction which leads to
	cracks in the links. Waste oil must be avoided for the same
	reason. Always use a proper chain oil which is off the non-fling
	type and stands the pressure of the cutters. Bars provided with
	nose sprockets are to be lubricated when refilling. Clean bar
	groove and oil filling hole regularly,
	Checking the lubrication

Direct the nose of the guide bar against a bright object, at a distance of abt 20 cm (8”). Run the saw at 3/4 full throttle for l/2- 1 minute and check that there is oil sprayed on the object.

Check daily for:

“Cracks in rivets and links of the chain.

oExcessive wear on side links and cutters or stiffness in the chain.

●A cutter should never be filed to less than 5/32 inch or 4 mm.

●Correct depth gauge setting.

NOTE! Change the drive sprocket each time you fit a new chain.