1 3
PRUNER INSTRUCTIONS MANUAL
9. MAINTENANCE AND TRANSPORT
For maintenance operations relating to the
engine, see the enclosed Brush Cutter
manual.
CHECKING THE SCREWS AND MOVING
PARTS
#
Before each use, check that there are no
loose screws or parts and that the cutting device
has no cracks or is excessively worn.
#
Replace any damaged parts before use.
WARNING! When the pruning
equipment is in operation, the
reduction unit will heat up. Do not
touch the box without safety gloves.
Danger of burns
9.1 CHAIN
MAINTENANCE AND SHARPENING
- With a correctly sharpened chain, work is less
tiring, cutting performance is good and there is
no abnormal wear of mechanical parts and bar.
- Before sharpening, the chain must be
tensioned by means of the chain tightener
(fig.17) see
“CHAIN CHANGING
” chapter
.
- After sharpening, loosen the chain as per fit-
ting instructions.
- Use a round file (specific for chains) with
diameter 5/32" (4 mm) fig. 22 part. 1.
Keep to the sharpening angles as in (fig.22
part.2-3).
- Sharpen by filing from inside outwards (fig.22
part.5) all the teeth on one side and then those
on the opposite side.
- Position the file so it protrudes by about 1 mm
(fig.22 part.4) above the level of the cutting
edges.
9.2 CHAIN
CHANGING AND TENSIONING
CAUTION! DO NOT START THE
PRUNER EQUIPMENT UNTIL THE
BAR AND CHAIN HAVE BEEN FIT-
TED AND ADJUSTED.
WEAR SAFETY GLOVES TO PER
FORM THESE OPERATIONS. THE
CUTTING TEETH (OF THE CHAIN)
CAN CAUSE SERIOUS INJURY.
1)
Position the body of the equipment as shown
in fig. 15.
2)
Loosen the nut (fig.15 part.1) and remove the
cover.
3)
Turn the chain tightening screw (fig. 17 part 1)
anticlockwise (loosen) and move back the chain
tightening tooth (fig.20 part.1).
4)
Remove the chain guide bar from the stud
bolt screw (fig.18 part.1).
5)
Remove the chain from the pinion (fig.19).
6)
Fit the new or sharpened chain around the
bar (fig. 21). The teeth of the upper section must
be positioned as shown in the detail.
7)
Position the chain guide bar on the stud bolt
screw (fig. 19).
CAUTION !!
Correctly couple the chain teeth
with the relevant pinion teeth (fig.19).
8)
Slightly tighten (clockwise) the chain tighte-
ning screw for an initial light tension (fig.19).
9)
Fit the chain cover back on and manually
tighten the nut.
10)
Complete chain tensioning by screwing
up (clockwise) the chain tension screw (fig.17).
When the proper tension has been reached, the
Summary of Contents for PBT3446TP
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