Garland TEXEL 427 DPG Instruction Manual page 52

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4. Tighten the chain cap nut.
NOTES: The chain expands with heat. When the chain
is cold the tension will be greater than hot.
If the chain is tensioned when it is cold, you should
check the tension after some cuts (the chain will have
reached its working temperature) since it will expand
and loosen when it is heated, and there is a danger
that it will leave the guide. Re-tension the chain if
necessary.
If the chain is re-tensioned when it is hot, the tension
should be checked when it cools and slightly loosen if
necessary since the contraction that occurs when the
chain cools could cause excessive chain tension and
damage it.
New chains require a rolling period during which their
links are adjusted by slightly modifying the distance of
the chain, this shooting period is a couple of minutes
of cutting. If you work with a new chain, remember
to check the tension of the chain after these first
minutes.
5.2.2. CHAIN OIL
Use only special oil for chainsaw chains. Do not use
any oil other than chainsaw chains as it may damage
the machine's oil pump.
Chain oil must be introduced into the chain oil
reservoir. The oil tank cap is indicated in chapter 3.
"Symbols on the machine".
To prevent dirt from entering the interior of the tank,
clean the oil tank cap before opening it. Close the oil
level cap by tightening it and clean if oil has spilled out
of the tank.
Check the contents of the oil tank by looking at the oil
level window.
Note: The service life of chainsaw chains and guide
bars depends largely on the quality of the lubricant
used. Do not use used oil!
6.3. FUEL
IMPORTANT: The fuel used is highly
inflammable. If the fuel or the machine catch
fire, fight the flames with a dry dust fire
extinguisher.
Do not smoke while preparing or refueling.
Do not approach any flame or hot element
to the fuel.
Use unleaded fuel of 95° and synthetic oil
for 2 stroke engines.
Motor Fuel: Mixture (Gasoline 40: Oil 1)
2.5%.
Mix gasoline and oil in a bottle homologated for this
use. If you will mix more combustible just prepare
the amount you will use the short term. Do not use
fuel that has been stored over two months. The
fuel stored for long periods lose its characteristics
making it harder to start the engine and giving poorer
performance.
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