ST BC 25 H Manuel D'utilisation page 160

4.5.3 Fitting 3-point, 4-point, 8-point
blades and saw blade (if permitted)
Apply the guard to the blade.
1. With the spacer (Fig. 9.A.1, Fig. 10.A.1)
correctly inserted on the shaft, fit the
inner ring-nut (Fig. 9.A, Fig. 10.A) in the
indicated direction, making sure that the
grooves match perfectly with those of the
angle transmission (Fig. 9.B, Fig. 10.B).
2. Fit the blade (Fig. 9.C, Fig. 10.C) and
outer ring-nut (Fig. 9.D, Fig. 10.D)
with the flat part facing the blade.
3. Insert the supplied wrench (Fig. 9.E,
Fig. 10.E), in the relative hole, manually
rotate the blade (Fig. 9.C, Fig. 10.C) and
push the wrench (Fig. 9.E, Fig. 10.E) until it
fits securely in the angle transmission hole
(Fig. 9.B, Fig. 10.B), blocking rotation.
4. Fit the cup (Fig. 9.F, Fig. 10.F) and tighten
the nut (Fig. 9.G, Fig. 10.G) fully tightening
it in an anti-clockwise direction (25Nm).
5. Remove the wrench (Fig. 9.E,
Fig. 10.E) to restore rotation.
Adjusting the cutting means guard:
6. Remove the additional guard (Fig. 9.H) - if
previously fitted, by loosening the screw
(Fig. 9.J), and releasing the couplers
clicked into the respective seats in
the cutting means guard (Fig. 9.I).
4.5.4 Removing 3-point, 4-point, 8-point
blades and saw blade (if permitted)
Apply the guard to the blade.
1. Insert the supplied wrench (Fig. 9.E,
Fig. 10.E), in the relative hole, manually
rotate the blade (Fig. 9.C, Fig. 10.C) and
push the wrench (Fig. 9.E, Fig. 10.E) until it
fits securely in the angle transmission hole
(Fig. 9.B, Fig. 10.B), blocking rotation.
2. Unscrew the nut (Fig. 9.G,
Fig. 10.G) clockwise and remove the
cup (Fig. 9.F, Fig. 10.F).
3. Remove the outer ring-nut (Fig. 9.D,
Fig. 10.D), and remove the blade (Fig. 9.C,
Fig. 10.C) and inner ring-nut (Fig. 9.A,
Fig. 10.A), being careful not to remove the
spacer (Fig. 9.A.1, Fig. 10.A.1) from the shaft.
4.6 FITTING THE TRANSMISSION TUBE
(MODELS WITH SEPARATE ROD)
1. Pull out the stop pin (Fig. 11.A) and push
the lower part of the rod (Fig. 11.B) until
the the stop pin clicks (Fig. 11.A) into
the hole (Fig. 11.C) in the rod. Insertion
can be facilitated by slightly rotating the
lower part (Fig. 11.B) in both directions;
full insertion is confirmed by the pin (Fig.
11.A) which must be pushed in all the way.
2. Once inserted, tighten the
knob securely (Fig. 11.D)
5. CONTROLS
5.1 ENGINE START/STOP SWITCH
Used to start and stop the engine. It is
a two-position switch (Fig. 12.A):
STOP - the engine stops and
cannot be restarted.
START - the engine can start and run.
5.2 THROTTLE TRIGGER LEVER
Used to regulate cutting means speed.
The activation of the throttle trigger lever (Fig.
12.B), can only be used if the throttle safety
lever is pressed simultaneously (Fig. 12.C).
The correct running speed will be
achieved by pressing the throttle trigger
lever (Fig. 12.B) as far as possible.
5.3 THROTTLE SAFETY LEVER
The throttle safety lever (Fig. 12.C) allows the
throttle trigger lever to be used (Fig. 12.B).
5.4 HANDLE FOR MANUAL START
Used for manual engine start-up (Fig. 12.D).
EN - 8