Efco GSH 40 Manuel D'utilisation Et D'entretien page 15

getting stuck.
If the diameter of the trunk is greater than the
length of the guide bar, make the felling cut as
shown in the sequence of Fig. 19.
LIMBING
a) Always start from the larger diameter and
move towards the tip to cut off limbs and any
secondary branches.
b) Always find the safest and most stable
position before accelerating the chainsaw. If
necessary, keep your balance by resting your
knee on the trunk itself.
c) Keep the chainsaw on the trunk so as not
to get too tired, turning it onto the left- or
right-hand side depending on the position of
the branch to cut (Fig. 20).
d) In the case of branches under tension, find a
safe position to protect yourself if they whip
back. Always start the cut from the opposite
side to the bend.
e) When lopping large diameter branches make
use of the bumper spike.
WARNING - Do not use the upper edge
of the tip of the guide bar to cross-cut;
otherwise you might risk a kickback.
BUCKING
When bucking up the trunk to desired lengths,
there is one basic rule to follow. Look to see where
the trunk is supported, and determine which way
the two halves will fall when cut.
a) If the trunk is supported at both ends, first
make a small cut at the top (1 - Fig. 21), then
complete the cut from the bottom (2 - Fig. 21).
This will avoid pinching the saw.
b) If the trunk is supported at one end or
near the center, first make a small cut from
underneath (1 - Fig. 22), then complete the cut
from the top (2 - Fig. 22).
WARNING - If the saw becomes pinched in
the trunk, stop the engine, lift the log and
change its position (Fig. 23). Never attempt to
free the saw by pulling on it.
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8. MAINTENANCE
WARNING - Always wear protective gloves
during maintenance operations. Do not
carry out maintenance when the engine is hot.
WA R N I N G - D e p a r t u r e f r o m t h e
sharpening instructions considerably
increases the risk of kickback.
CHAIN SHARPENING
The pitch of the chain (Fig. 25) is 3/8".
Sharpen the chain using protective gloves and a
round file of Ø 4.0 mm (5/32").
Always sharpen the cutters only with outward
strokes observing the values given in Fig. 25.
After sharpening, the cutting links must all have
the same width and length.
WARNING - A sharp chain produces well-
defined chips. When your chain starts to
produce sawdust, it is time to sharpen.
After every 3-4 times the cutters have been
sharpened you need to check the height of the
depth gauges and, if necessary, lower them using
the flat file and template supplied optional, then
round off the front corner (Fig. 26).
WARNING - Proper adjustment of the
depth gauge is as important as proper
sharpening of the chain.
GUIDE BAR
The guide bars provided with a sprocket at
their tip must be lubricated with grease using a
lubrication syringe.
The bar should be reversed every 8 working
hours to ensure uniform wear.
Keep the bar groove and lubrication hole clean
using the bar groove cleaner supplied optional.
Check the bar rails frequently for wear and, if
necessary, remove the burs and square-up the
rails using the flat file.
WARNING - Never mount a new chainsaw
on a worn sprocket.
AIR FILTER - Rotate the knob (A, Fig. 27) and
check the air filter (B) each day. Open air cleaner
(B) by means of the two tabs (E, Fig.27). Clean
with Emak degreaser p/n 001101009A, rinse with
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