GENERAL SAFETY PRECAUTIONS
General rules
•Only use cutting equipment recommended by us! See instructions under the heading Technical data.
•Keep the chain’s cutting teeth properly sharpened! Follow our instructions and use the recommended file gauge. A damaged or badly sharpened chain increases the risk of accidents.
•Maintain the correct depth gauge setting! Follow our instructions and use the recommended depth gauge clearance. Too large a clearance increases the risk of kickback.
•Keep the chain properly tensioned! If the chain is slack it is more likely to jump off and lead to increased wear on the bar, chain and drive sprocket.
•Keep cutting equipment well lubricated and properly maintained! A poorly lubricated chain is more likely to break and lead to increased wear on the bar, chain and drive sprocket.
Cutting equipment designed to reduce kickback
WARNING! Faulty cutting equipment or
! the wrong combination of bar and saw chain increases the risk of kickback! Only use the bar/saw chain combin- ations we recommend, and follow the filing instructions. See instructions under the heading Technical data.
The only way to avoid kickback is to make sure that the kickback zone of the bar never touches anything.
By using cutting equipment with
Bar
The smaller the tip radius the lower the chance of kickback.
Chain
A chain is made up of a number of links, which are available in standard and
IMPORTANT! No saw chain design eliminates the danger of kickback.
WARNING! Any contact with a rotating
! saw chain can cause extremely serious injuries.
Some terms that describe the bar and chain
To maintain the safety features of the cutting equipment, you should replace a worn or damaged bar or chain with a bar and chain combinations recommended by Husqvarna. See instructions under the heading Technical Data for a list of replacement bar and chain combinations we recommend.
Bar
•Length (inches/cm)
•Number of teeth on bar tip sprocket (T).
•Chain pitch (inches). The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket.
•Number of drive links. The number of drive links is determined by the length of the bar, the chain pitch and the number of teeth on the bar tip sprocket.
•Bar groove width (inches/mm). The groove in the bar must match the width of the chain drive links.
•Chain oil hole and hole for chain tensioner.The bar must be matched to the chain saw design.
Chain
•Chain pitch (inches)
•Drive link width (mm/inches)
•Number of drive links.
Sharpening your chain and adjusting depth gauge setting
WARNING! Always wear gloves, when
! working with the chain, in order to protect your hands from injury.
General information on sharpening cutting teeth
•Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the chips will be very small. If the chain is very blunt it will produce wood powder and no chips or shavings.
•A sharp chain eats its way through the wood and produces long, thick chips or shavings.
•The cutting part of the chain is called the cutter and consists of a cutting tooth (A) and the depth gauge (B). The cutters cutting depth is determined by the difference in height between the two (depth gauge setting). (7)
When you sharpen a cutting tooth there are four important factors to remember.
1Filing angle
2 Cutting angle
3 File position
4 Round file diameter
It is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.
See instructions under the heading Technical data for information about sharpening your chain.
WARNING! Departure from the
! sharpening instructions considerably
increases the risk of kickback.
Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a file gauge. See instructions under the heading Technical data for information on the size of file and gauge that are recommended for the chain fitted to your chain saw.
•Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly.
•Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw and file the teeth on the other side.
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