Using The Machine; Preparation - Stiga SP 386 Manual De Instrucciones

6. USING THE MACHINE

IMPORTANT The safety regulations to
follow during machine use are described
in Chapter 2. Strictly comply with these
instructions to avoid serious risks or hazards.

6.1 PREPARATION

Before starting to work, it is necessary to carry
out several checks and operations to ensure you
can work efficiently and in maximum safety.
IMPORTANT The machine is supplied with
the fuel and chain lubrication oil tanks empty.
6.1.1 Refuelling
Fill with fuel before using the machine. For
preparing the mixture, refuelling methods
and precautionsent see paragraph 7.3.
6.1.2 Filling with chain lubrication oil
Fill with chain lubrication oil before using
the machine. For oil filling methods and
precautionsent see paragraph 7.4.
6.1.3 Checking the chain tension
Perform all operations
with the engine off.
Always wear heavy-duty gloves.
Check the chain tension.
The tension is correct when the drive links
do not slip out of the chain guides if you hold
the chain in the middle of the bar (Fig. 10).
To adjust the chain tension:
1. loosen the cover nuts, using
the supplied wrench;
2. turn the chain tension adjuster screw (Fig.
8.A) to achieve the desired tension;
3. raise the bar and tighten the guard nuts
securely using the wrench (Fig. 9).
Never work with the chain loose,
as it can be hazardous if the chain
slips out of the bar guides.
IMPORTANT During the first period of
use it must be checked more frequently
due to settling of the chain.
6.1.4 Preparing the machine
before starting work
• Anti-freeze device
When using the chain saw at temperatures under
+5°C, it is necessary to change the anti-freeze de-
vice settings before starting the machine to prevent
ice from forming inside the carburettor, which will
result in a loss in engine power or erratic engine
performance.
The machine is equipped with an air vent hatch on
the cylinder lid, to allow warm air flow to the engine.
In normal operating conditions (temperatures
above +5°C), use the machine in standard operat-
ing mode, i.e. using factory default settings.
To switch from "Normal " mode to "Anti-freeze "
mode (and vice versa):
1. stop the machine (par. 6.6);
2. remove the air filter cover and
the air filter (par. 8.2);
3.
3.a on models SP386, SP 426:
– remove the anti-freeze cap from
its housing to the right of the
cylinder cover (Fig. 14.A);
– Turn the anti-freeze cap so that the
«SNOW» symbol is facing downwards to
leave the air vent hatch open (Fig. 14.B);
3.b on models SP466, SP 526:
– unscrew the screws which secure the
cylinder cover in place (Fig. 15.A) (2
screws inside and one outside) and
remove the cylinder cover. (Fig. 15.B);
– remove the anti-freeze cap from its
housing (Fig. 16.A), in the centre and at
the back of the cylinder cover (Fig. 16.B);
– Turn the anti-freeze cap so that
the «SNOW» symbol is facing
downwards (Fig. 17.A) to leave the
air vent hatch open (Fig. 17.B);
– remount the cylinder cover.
4. remount the air filter cover and
the relative cover (par. 8.2).
NOTE If the machine is used in anti-freeze
mode at temperatures above +5°C, this may
cause difficulties when starting the engine and
during use due to the incorrect engine speed.
Always check that the machine is switched to
standard mode (anti-freeze cap with the «SUN»
symbol facing sideways and the air vent hatch
closed) if there is no danger of ice forming.
EN - 8