- 12 -
regulated so that the motor answers ready to the abrupt accele-
rations and has a good lessened operation.
Screw H: It regulated the carburation to full power. It must be regulated
so that the motor can distribute the maximum power during the
phase of cut.
Screw T: It increases or it diminishes the number of turns of the mi-
nimal regime. It must be regulated so that to the minimal regime
the chain does not move.
The basic regulations of the carburettor are the followings (fig. A.
pos. 35):
- Completely screw in screw L for acceleration adjustment and un-
screw by 1+1/4 (+/-1/8) of a turn.
- Completely screw in screw H for maximum throttle opening and
unscrew by 1+1/4 (+/-1/8) of a turn.
- Screw T, adjustment screw for minimum; at minimum the chain
must absolutely not move.
STARTING/STOPPING THE CHAIN (FIG.A)
Starting the chain
For starting the chain it is enough, after switching on the engine, to
press the accelerator lever (in sequence 5 and 4).
Stopping the chain
It is enough to release the accelerator lever (4).
WARNING! When you have finished working or whilst taking a
break, always switch off the engine.
WARNING! In order to prevent kickbacks always grip both of the
hand grips safely and avoid cutting with the tip of the bar and avoid
getting the bar stuck in the trunk being cut.
FUNCTIONING OF THE EMERGENCY CHAIN BRAKE (FIG.A)
The chain brake is a safety device that is activated by exerting pressure
on the front hand guard (8). In case of kickback, the operator’s hand
hits the hand guard, activating the chain brake.
The purpose of the chain brake is to reduce danger in case of kickback.
Before using the chain saw, you must test the chain brake as follows:
- Check that the chain brake is deactivated, pushing backwards the
front hand guard (8) towards the rear handle.
- Position the chain saw on a solid flat surface that has been cleared
of all objects.
- Switch on the chain saw (see “Starting up the engine ”).
- With the chain saw switched on, activate the chain brake by turning
your left wrist against the hand guard (8) without releasing the
hand grip.
- The chain should stop instantly.
- Release the accelerator control (4) and switch off the engine.
N.B. Release the accelerator lever immediately.
WARNING! If the chain does not stop when the brake is activated,
have the chain saw checked at an authorised customer service
centre. Do not use the chain saw if the chain brake does not
function properly!
ADJUSTMENT FOR CHAIN LUBRICANT (FIG. A)
Using a screwdriver in the screw (36) can vary the amount of oil will
fall in the chain:
- Clockwise to increase the amount of oil.
- Clockwise to decrease oil qauntità.
In addition to visually check the oil deposited on the chain, you can
practically see if oil is present in correct quantity:
- Start the machine and direct the tip of the bar toward the floor
without touching it.
- Speed up in order to get the maximum speed.
- If the chain is lubricated properly in the floor you will notice a line
of oil to the bar.
FELLING TREES AND SAFETY PROCEDURES
The following topics will be discussed below:
1. Advice for those using the chain saw for the first time
2. Useful suggestions concerning safety gear
3. Limiting access to danger zones
4. Precautions to be taken according to weather conditions for people
in the area and eventual local regulations.
5. Preparing and using escape routes
6. Felling trees on slopes
7. Felling trees in relation to the saw’s cutting capacity.
8. How to control the fall direction of the tree being cut.
9. Using wedges for felling trees
10. Cutting branches (debranching)
11. Cutting fallen trunks
12. Cutting wood on supports
1. Advice for those using the chain saw for the first time
Those who are using the chain saw for the first time should receive
practical instructions concerning its use and gear by an expert ope-
rator. A beginner should first practice by cutting wood on a trestle
or other support.
2. Useful suggestions concerning safety gear
For protection from other risks related to the use of this tool, adequate
clothing and gear must be used. In general, the following devices
should be used:
- Heavy-duty padded trousers.
- Coloured jacket to ensure that the operator is easily visible.
- Heavy-duty leggings and heavy-duty, safety shoes with non-skid soles
and steel toes.
- Heavy-duty gloves and, if possible, insulated to dampen vibrations.
- Helmet with visor for protection from falling branches and materials.
- Soundproof headphones to protect hearing.
3. Limiting access to danger zones
Limit access to the area by marking it off with warning signs.
4. Precautions to be taken according to weather conditions for
people in the area and eventual local regulations.
- IMPORTANT! Do not use the chain saw in adverse weather condi-
tions: rain, snow, low visibility, near cables or electrical networks, or
where there may be a risk of explosions.
- Never cut in the presence of people or animals and keep at a distance
twice the height of the tree.
- Find out about any restrictions on forest cutting issued by institu-
tions, municipal ...
5. Preparing and using escape routes (see also point 6)
- IMPORTANT! Before you begin felling a tree, you must decide
the fall direction, identify the escape route and then eliminate all
obstacles along it.
N.B.: The direction of the fall is determined by the cut.
- The escape routes for the operator are outlined in figure below.
a) Fall direction
b) Danger area
c) Escape route
6. Felling trees on slopes
- IMPORTANT! When felling a tree on a slope, the operator must
position himself on the upper side because, once the tree is cut, it
will roll downhill.
7. Felling trees in relation to the saw’s cutting capacity.
Do not make cuts on diameters greater than the maximum cutting
