ST BP 375 Manuel D'utilisation page 121

NOTE We recommend using the
throttle adjuster function during long
work periods, to avoid having to keep
pressing the throttle control lever.
5.3 CHOKE CONTROL
Used to turn on the engine when cold.
The choke control has three positions:
Position A (Fig. 5.A) - the
choke is not engaged (normal
operations and warm start).
Position B (Fig. 5.B) - The choke
is in the intermediate position (to
make starting the engine easier).
Position C (Fig. 5.C) - The choke
is engaged (for a cold start).
5.4 PRIMER CONTROL BUTTON
Press the rubber button of the
primer to inject fuel into the
carburettor to facilitate startup
when the engine is cold.
5.5 HANDLE FOR MANUAL START
For manual engine start-up (Fig. 6.A).
6. USING THE MACHINE
IMPORTANT The safety regulations
to follow are described in chap. 2. Strictly
comply with these indications to avoid
serious risks or dangers.
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.
Place the machine in a stable
horizontal position on the ground.
IMPORTANT The machine
is supplied without fuel.
6.1.1 Refuelling
Fill with fuel before using the machine. For
preparing the mixture, refuelling methods
and precautions (see paragraph 7.2, 7.3).
6.2 SAFETY CHECKS
Run the following safety checks and
check that the results correspond to
those outlined on the tables.
Always carry out the
safety checks before use.
6.2.1 General check
Object
Handgrip and harness
straps (Fig. 1.E, 1.F)
Screws on the machine
Cooling air ducts
Blower tube (Fig. 1.B)
Throttle control (Fig. 4.A)
Throttle adjuster (Fig. 4.B) It must move freely
Rotor
Guards
Machine
Air filter (Fig. 9.C, 9.D)
Electric cables and
spark plug cable
Spark plug cap (Fig. 9.F)
6.2.2 Machine operating test
Action
Start the machine
(par. 6.3)
Pull the throttle control
lever (Fig. 4.A) / throttle
adjuster (Fig. 4.B)
EN - 7
Result
Clean, dry and fixed
firmly to the machine.
Correctly tightened
(not loose)
Not clogged
Correctly installed.
It must move freely
and not be forced.
and not be forced.
No signs of damage
No signs of damage
No signs of damage
or wear
Clean
Undamaged to
prevent sparks.
Undamaged and
fitted correctly on
the spark plug
Result
The machine will
switch on. The rotor
rotates at minimum
speed and the blower
tube expels little air.
The rotor rotates and the
blower tube expels air.