ASSEMBLY (cont.)
12
8. Fasten the chain drive cover nut (17)
finger
tight
only. Do not use wrench just yet.
9. Rotate the chain tensioner screw (18)
clockwise until the links of the chain just
touch the bottom edge of the chain.
Adjusting the chain tension
10. Ensure the chain drive cover nut (17) is only
finger tight (if the nut was previously tight it
will need to be loosened off a little).
Caution:
If you try to rotate the chain tension
screw (18) whilst the nut is tight, it will result in
the chain not loosening and possible damage
to the chain tensioner screw (18) and the chain
tensioning pin (23).
11. To get the correct chain tension, firmly pull
up on the chain at the middle of the top of
the exposed guide bar. When the chain is
pulled up to its highest point, the bottom
tip of the links should only just stay in the
track [middle of the guide bar (14)].
12. Rotate the chain tensioner screw (18) to get
the correct tension. Once the correct
tension has been achieved tighten the chain
drive cover nut (17) to lock the bar and
tension in place.
13. Check the tension again after a few minutes
of cutting and several times in the first hour
because the chain will lengthen as it breaks
in. Adjust as you go.
A loose chain causes rapid wear to both the
chain and the guard bar and could derail
causing a major safety hazard.
Note:
Chains lengthen slightly as the link pins set into place. They set into place
from the load applied to the chain, this process continues through-out the life of
all chains as they gradually wear from use.
5 – 6.3mm gap is the
ideal tension
Chain Guide
Rotate Clockwise
To Tension Chain
Lift chain up at
middle point of
guide bar
