Fig. 10
Fig. 11
Fig. 12
Mount the cover and nut, but do not fully tighten the nut.(see
Fig. 10)
The correct chain tension is reached when the chain can be
raised approx. 2-4mm from the chain bar in the centre. This
should be done by using one hand to raise the chain against
the weight of the machine.
Then tighten clamp nut (10) with spanner. (See Fig.11 & 12).
WARNING: Unplug chain saw from power source
before adjusting saw chain tension.
WARNING: Cutting edges on chain are sharp. Use
protective gloves when handling chain.
WARNING: Maintain proper chain tension always. A
loose chain will increase the risk of kickback. A loose
chain may jump out of guide bar groove. This may injure
operator and damage chain. A loose chain will cause chain,
chain bar, and sprocket to wear rapidly.
The chain life of the saw chain mainly depends upon
sufcient lubrication and correct tensioning.
Avoid tensioning the chain if it is hot, as this will
cause the chain to become over tensioned when it
cools down.
3. TENSIONING CHAIN
Always check the chain tension before use, after the rst
cuts and regularly during use, approx. every 5 cuts. Upon
initial operation, new chains can lengthen considerably.
This is normal during the break-in period, and the interval
between future adjustments will lengthen quickly.
Check the tension regularly because the chain length tends
to stretch with use(especially when the chain is new; after
the first assembly, the chain tension must be checked after
5 minutes machine operation); in any case do not tighten
the chain immediately after use, but wait until it cools down.
In cases where the loosened chain needs to be adjusted,
always unscrew the adjustable outside ring before adjusting
the chain tensioning screw/knob; adjust the tension and
tighten the bar retainging nut/knob accordingly.
WARNING! Tensioning the chain too tightly will
overload the motor and cause damage, insufcient
tension can provoke chain derailing, whereas a chain
tightened correctly provides the best cutting characteristics
and prolonged work life.
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