Echo CS-310 Operator's Manual page 25

CS-310
• Never use metal tools for cleaning which may scratch the metal paint and allow corrosion to develop.
• Clean sap accumulation from metal parts with cloth and warm water with soap.
• Rinse with clean water and dry metal surfaces.
• Apply a light coating of engine or bar and chain oil metal parts after they are cleaned.
• Install and properly tension guide bar and chain. Run engine for one minute alternating engine speed
between full throttle for 5 seconds and idle for 5 seconds to coat metal parts with additional protective
chain oil.
• "Do not run a chainsaw not under cutting load at wide open throttle longer than 5 seconds or engine
damage may occur.
• "Keep chain properly tensioned during operation to prevent the chain from jumping out of the guide bar rail
slot and damaging metal engine parts
Felling The Tree
A falling tree can seriously damage anything it may hit - a car, a house, a fence, a power line, or
another tree. There are ways to make a tree fall where you want it, so first decide where that is!
Before cutting, clear the area around the tree. You will need good footing
while working and you should be able to work the saw without hitting any
obstacles. Next, select a path of retreat. When the tree begins to fall you
should retreat away from the direction of fall at a 45-degree angle and at
least 3 m (10 feet) from the trunk to avoid the trunk kicking back over the
stump.
Begin the cut on the side to which the tree is to fall. Cut a notch about 1/3
of the way into the tree. The position of this notch is important since the
tree will try to fall "into" the notch. The felling cut is made on the side
opposite the notch and at a level about 5 cm (2 in.) above the bottom of
the notch. Do not try to cut through to the notch with the felling cut. The
remaining wood between the notch cut and felling cut about 5 cm (2 in.)
will act as a hinge when the tree falls, guiding it in the desired direction.
When the tree starts to fall, kill the engine, place the saw on the ground
and make your retreat quickly.
To fell big trees with a diameter exceeding twice the bar length, start the
notching cuts from one side and draw the saw through to the other side of the
notch. Start the back cut on one side of the tree, pivoting the saw through to
form the desired hinge on that side. Then remove the saw for the second cut.
Insert the saw in the first cut, very carefully so as not to cause kickback. The
final cut is made by drawing the saw forward in the cut to reach the hinge.
X7503277900
©3/2020 ECHO Inc.
OPERATION
3 m (10 feet)
Direction
45°
of fall
45°
Retreat
Not this way
Direction of fall
Hinge
5 cm (2 in.)
Felling cut
First cut
Notch
5 cm
Second cut
(2 in.)
One-third tree diameter
1
Retreat
3
2