28
29
1a Pull the chain brake back and ensure that it has been released (the chain cover can
only be removed with the chain brake disengaged).
1b Then remove the securing nuts and the chain cover.
1c Fit the chain around the bar ensuring that the direction of the chain is as depicted in
the picture on the bar. Fit the chain on the sprocket. Adjust the position of the chain
tensioner so the tensioner pin locates in the hole (A) on the bar.
6. Adjust the tension to ensure that there is not too much slack in the chain. Make sure
the tensioner pin is located in the assembly hole on the bar. Pay attention to the
correct direction of the saw chain. Compare with the picture near the chain sprocket
and the picture on the bar.
7. Fit the chain cover to the power unit. While lifting the tip of the guide bar, tighten the
bar knob securely (clockwise). Hand tighten only!
8. While holding up the tip of the bar, adjust the chain tension by turning the tensioner
screw until the chain engages in the bar channel.
When tensioned correctly, it should be possible to pull one full chain link free of the bar
channel with ease, see image on previous page (1d).
9. Tighten the nuts securely (finger tight). Then check the chain for smooth rotation and
proper tension while moving it by hand. If necessary, loosen the chain cover.
10. Tighten the tensioner nuts.
NOTE:
A new chain will expand its length during the first period of use. Check and re-adjust
the tension frequently, as a loose chain can easily derail or cause rapid wear of itself and
the chain bar.
CAUTION!
If the saw chain is TOO LOOSE or TOO TAUT, the V-drive wheel, chain bar,
chain and crank shaft bearing will suffer premature wear. Above picture shows the correct
tension A (when cold) and tension B (when warm). FIG. C shows a chain that is too loose.
Periodical service points
5
4
3
2
1
1.
Start assembly
2.
Fan cover
3.
Fan
4. Cylinder fins
5.
Engine cover
Maintenance of the saw chain and the chain bar
1. Air cooling system
Dust clogging around the cooling system and the cylinder fins will cause overheating of the
engine. Periodically check and clean the cooling system and the cylinder fins with a brush,
after removing the cylinder cover, the air cleaner and the recoil case. When installing the
cylinder cover and the cooling system, make sure that switch wires and grommets are
positioned correctly in place.
NOTE:
Be sure to unblock the air intake hole.
2. Cutter setting guidance
WARNING!
Be sure to wear safety gloves.
