12. 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)].
13. 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.
14. 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.
Filling up with fuel and oil
Warning!
Petrol is very flammable. Avoid smoking or causing any sparks or flames
near fuel. Make sure that you stop the motor and allow it to cool before refuelling
the machine. Select outdoor bare ground for fuelling and move at least 3m away
from the fuelling point before starting the motor.
• Only use oil that is expressly labelled for use with air-cooled 2-stroke engines. DO
NOT use BIA or TCW (2-stroke water-cooling type) mixed oil. The recommended
mixing ratio is PETROL 35: OIL 1.
• Use unleaded petrol with a minimum Octane number of 89. If you use petrol with
an Octane number lower than 89, there is a danger that the engine might
overheat and the piston seize.
• Poor quality petrol or oil may damage sealing rings, fuel lines or the fuel tank. Do
not use wasted or regenerated oil, it can damage the oil pump.
Caution: To maximise the lifetime of the engine, avoid the following:
• Do not use raw petrol (without 2-stroke oil), it will severely damage the engine
very quickly. This damage will not be covered under warranty.
• Do not run the tank dry, as this will cause damage to the engine.
• Do not use oil meant for 4-stroke engines, it will cause spark plug fouling, exhaust
blocking and piston ring sticking.
ASSEMBLY (cont.)
13
5 – 6.3mm gap is the
ideal tension
Lift chain up at
middle point of
guide bar
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