Husqvarna 317 EL 用户手册

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6. Replace the chain drive cover and screw 

  

the mounting nut hand tight. 

7. Tension the chain by screwing the 

 tensioning screw clockwise using the 

screwdriver tip on the  

combination 

tool.

8.

  

Tighten chain fi rmly but not so hard that it does not turn easily 

by hand force. Push the button to release the chain brake. To 

avoid contact between your hands and the chain, use gloves 

to turn the chain. 

9. Tighten the mounting nut with the combination tool while hold-

ing the tip of the guide bar up. 

  

The tension of a new chain must be checked frequently until it 

is broken in. Continue to check the tension at regular intervals 

to ensure good performance and a long service life.

•   Wear causes a chain to become looser with use. Regular 

t ensioning is important to compensate for this wear.

•   Check the chain tension at least every time you refi ll the chain 

oil reservoir.

1.  Pull kickback guard back against the front handle 

  

to ensure that the chain brake is not applied.

2.  Screw out the guide bar nut and remove 

  

the chain drive cover.

3.  Fit the chain around guide bar nose with 

  

the top cutters facing forwards.

4.  Holding the chain over the guide bar nose, position the 

back end of the guide bar against the drive sprocket at a 

45° angle to the power head. Pass the free end of the chain 

around the drive sprocket, swing the guide bar into place 

over the mounting bolt and against the power head, and 

guide the chain into the guide bar groove.

5. Seat the guide bar tensioner pin in its hole in the guide bar.

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