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Petrol Powered Pole Tools
E&OE
©2019 Bäumr-AG
19
Saw Chain Tension
Ensure that the saw chain is correctly tensioned and the chain drive cover nuts are properly
tightened before use and during cutting. • The saw chain will "stretch" with use, so it is
important to check chain tension before and during use • Wear suitable gloves when handling cutting
devices. •
Do NOT check chain tension with the engine running
. •
Do NOT adjust chain tension with
the engine running
.
Correct saw chain tension is extremely important in terms of both machine efficiency and operator safety.
Check chain tension before each use. Check chain tension frequently during use – whenever the machine is
put down (engine MUST be stopped first).
Checking Tension
Ensure engine is not running when adjusting chain tension.
•
The saw chain should fit snugly into the groove in the chain bar and it must be possible to pull the chain
along the bar with a gloved hand. You should be able to lift the saw chain just out of the chain bar groove
without excessive effort.
•
If the chain "sags" under the chain bar or can be lifted well out of the chain bar groove, it is too loose.
•
If the chain is snug in the chain bar groove but cannot be lifted out slightly or be pulled around the bar by
hand, it is too tight.
Adjusting Tension
1.
Clean the chain (if necessary), chain bar and tensioning mechanism
2. Ensure the cover nut holding the chain drive on
is only "finger-tight".
3. Lift and hold the end of the chain bar up, then using a suitable screwdriver, rotate the adjustment screw
(
D
) as required – rotate right (clockwise) to increase tension; rotate left (anti-clockwise) to reduce
tension.
4. While still holding the end of the chain bar up,
securely tighten the cover nut
with the tools provided.
5. Check chain tension and re-adjust, if necessary. Ensure the cover nut is
loosened
again
to "finger tight"
before making tension adjustments. Once the tension is correct, ensure the cover nut is
securely
tightened
with the tools provided.
LOOSE
TIGHT
CORRECT
D
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