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4. Assemble the chain sprocket cover on the saw body and tighten the collar nuts by hand.
5. Hold the guide bar tip up and adjust the chain tension by turning the tension screw until
the saw chain lies alongside the guide bar.
Looser
Tighter
Tension screw
Figure 4
6. Hold up the tip of the guide bar and tighten the
collar nuts (12 ~ 15 Nm). Check the chain tension/
mounting as follows; The chain should be able to
be lifted about 5 mm in the middle of the bar when
the chain tension is correct. Wrap the saw chain
around the bar by hand and see if it runs as it should
(always use gloves while handling the chain saw),
adjust the chain tension as needed.
7. Remember to loosen the collar nuts somewhat
before you turn the chain tension screw, and to
tighten the collar nuts again after adjustment.
Note! A new saw chain will lengthen in the beginning. Check and adjust the chain tension
often. A loose chain can come off or dull both the guide bar and saw chain.
4. Fuel and chain oil
Fuel
Warning! Petrol is highly flammable. Avoid smoking close to where fuel
is handled, do not cause any sparks embers or naked flames either.
Switch off the chain saw and let it cool before refuelling it. Refuel out-
doors and always move at least 3 metres away from the refuelling site
before starting the chain saw.
• Mix petrol (unleaded 95 octane without added ethanol) with a good
quality 2-stroke oil intended for air-cooled 2-stroke engines.
• Recommended mixture: Petrol/oil 50:1 (2 %)
The engine is designed to be used with unleaded fuel.
• Use at least 87 octane fuel.
• If petrol with octane under 87 is used the engine can overheat resulting in engine damage.
• Use unleaded fuel to protect the environment and your health.
• Bad quality fuel or oil can damage seals, fuel pipes or the fuel tank.
Figure 5
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