AL-KO BKS 4540, Translation Of The Original Operating Instructions

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en
Fuel and chain oil
36 BKS 4540
1 Mount the guide bar then fit the saw chain around the bar and spro-
cket.
2 Fit the chain tensioner nut into the lower hole of the guide bar, then in-
stall the chain cover, and fasten the mounting nut to finger tightness.
3 While holding up the tip of the bar, adjust the chain tension by turning
the tensioner screw until the tie straps just touch the bottom side of
the bar rail.
4 Tighten the nuts securely with the bar tip held up (12 ~ 15 Nm). Then
check the chain for smooth rotation and proper tension while moving
it by hand. If necessary, readjust with the chain cover loose.
5 Tighten the tensioner screw.
(1) Loosen
(2) Tighten
(3) Chain tension adjusting screw
CAUTION!
It is very important to maintain the proper chain tension. Rapid
wear of the guide bar or the chain coming off easily can be cau-
sed by improper tension. Especially when using a new chain,
take good care of it since it should expand when first used.
The Spiked bumper belongs to the chain saw. It must be screwed
up on chain saw before the initial use. Please fix the spiked bum-
per with two screws on the forefront of the chain saw.
FUEL AND CHAIN OIL
FUEL
The engines are lubricated by oil specially formulated for air-cooled 2-
cycle gasoline engine use. If oil is not available, use an antioxidant ad-
ded quality oil expressly labeled for air-cooled 2-cycle engine use.
RECOMMENDED MIXING RATIO GASOLINE 40 : OIL 1
(JASO FC or ISO EGC grade formulated for air-cooled, two-stroke engi-
nes). These engines are certified to operate on unleaded gasoline.