Husqvarna 240e 用户手册

English – 11

5451676-63 Rev.1 2008-04-14

• 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.

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 ”built-in” kickback 
reduction and keeping the chain sharp and well-
maintained you can reduce the effects of kickback.

The smaller the tip radius the lower the chance of kickback.

A chain is made up of a number of links, which are 
available in standard and low-kickback versions.

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.

• 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 pitch (inches)
• Drive link width (mm/inches)
• Number of drive links.

• 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.
1 Filing 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.

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.

IMPORTANT! No saw chain design eliminates the 
danger of kickback.