Maintenance - McCulloch MiniMac 14 Manuel D'utilisation

Before making the final cut, always recheck the area for bystanders,
animals or obstacles.
Felling Cut:
1. Use wooden or plastic wedges (G) to prevent binding the bar or chain
(H) in the cut. Wedges also control felling as shown below.
G
2. When diameter of wood being cut is
greater than the bar length, make 2
cuts as shown to the right.
As the felling cut gets close to the
hinge, the tree should begin to fall.
When tree begins to fall, remove saw
from cut, stop engine, put chain saw
down, and leave area along retreat
path.
Limbing
Limbing a tree is the process of removing the branches from a fallen tree.
Do not remove supporting limbs (A) until after the log is bucked (cut) into
lengths as shown below. Branches under tension should be cut from the
bottom up to avoid binding the chain saw.
A
Never cut tree limbs while standing on tree trunk.
Bucking
Bucking is cutting a fallen log into lengths. Make sure you have a good
footing and stand uphill of the log when cutting on sloping ground. If possi-
Ensure that the power cord is disconnected before performing any main-
tenance on your saw.
Guide Bar Maintenance
Most guide bar problems can be prevented merely by keeping the chain
saw well maintained.
Incorrect filing and non-uniform cutter and depth gauge settings cause
most guide bar problems, primarily resulting in uneven bar wear. As the bar
wears unevenly, the rails widen, which may cause chain clatter and difficul-
ty in making straight cuts.
Insufficient guide bar lubrication and operating the saw with a chain that is
TOO TIGHT will contribute to rapid bar wear (see Chain Maintenance).
To help minimize bar wear, the following guide bar maintenance is recom-
mended.
BAR WEAR - Turn guide bar frequently at regular intervals (for example,
after 5 hours of use), to ensure even wear on top and bottom of bar.
BAR GROOVES - Bar grooves (or rails which support and carry the chain)
should be cleaned if the saw has been heavily used or if the saw chain
Toll Free Hot Line: 1-800-521-8559
Cutting Instructions
H

Maintenance

ble, the log should be supported so that the end to be cut off is not resting
on the ground. If the log is supported at both ends and you must cut in the
middle, make a downward cut halfway through the log and then make the
undercut. This will prevent the log from pinching the bar and chain. Be
careful that the chain does not cut into the ground when bucking as this
causes rapid dulling of the chain.
When bucking on a slope, always stand on the uphill side.
1. Log supported along
entire length: Cut from top
(overbuck), being careful
to avoid cutting into the
ground.
2. Log supported on 1 end:
First, cut from bottom
(underbuck) 1/3 diameter
of log to avoid splintering.
Second, cut from above
(overbuck) to meet first
cut and avoid pinching.
3. Log supported on both
ends: First, overbuck 1/3
diameter of log to avoid
splintering. Second,
underbuck to meet first
cut and avoid pinching.
The best way to hold a
NOTE
log while bucking is to use a sawhorse. When this is not possible,
the log should be raised and supported by the limb stumps or by
using supporting logs. Be sure the log being cut is securely support-
ed.
Bucking Using a Sawhorse
For personal safety and ease of cutting, the
correct position for vertical bucking is essen-
tial.
Vertical Cutting:
1. Hold the saw firmly with both hands.
2. Keep the saw to the right of your body
while cutting (A).
3. Keep the left arm as straight as possible
(B).
4. Keep weight on both feet (C).
CAUTION: While the saw is cutting, be
sure the chain and bar are being prop-
erly lubricated.
appears dirty. Rails should always be cleaned every time the saw chain is
removed.
OIL PASSAGES - Oil passages at bar pad should be cleaned to ensure
proper lubrication of the bar and chain during operation. This can be done
using a soft wire small enough to insert into the oil discharge hole.
The condition of the oil passages can be easily checked. If the pas-
NOTE
sages are clear, the chain will automatically give off a spray of oil
within seconds of starting the saw.
To Clean Guide Bar Rails:
1. Remove sprocket cover, bar and
chain (see Assembly).
2. Using a screwdriver, putty knife,
wire brush or other similar instru-
ment, clear residue from the rails
on the guide bar. This will keep
the oil passages open to provide
proper lubrication to the bar and
chain.
3. Reinstall the bar, chain, sprocket
cover and bar bolt retaining nuts.
(See Assembly).
A
B
C
7