Safety Instructions; Installation; Operation - Makita RBC25A Instruction Manual

INSTRUCTIONS FOR U S E OF THE NYLON CUTTING HEAD
(BUMP & FEED BF4)
Safety Instructions
1.
Read
this
section carefully and thoroughly before use.
2. Check the nylon
cutting
head carefully before each
use.
If
you notice any o f following, replace the worn or
damaged parts
with
new ones immediately (Fig.
19):
Dents appear on the knob head.
The housing (cover) is damaged or cracked.
The "Limit marks (notches)" on the cover have
disappeared.
3.
Wear appropriate clothing and protectors.
4.
Always stop
t h e
engine before inspecting the cutting
head
BF4
or replacing the nylon cord.
5.
Do not allow anyone near
t h e
operation area. The
cutters might send stones or debris flying, possibly
harming bystanders.
6.
Never
use
the cutting head BF4 on
tools
with
a cutter
head speed higher than
10,000
RPM.
Installation
See page
5
(Mounting the nylon cutting head)
Operation
1.
Increase the cutter head speed to approx.
6,000
RPM.
Low speed (under 4,000
RPM)
causes
inefficient cutting. Use the tip of the nylon cord
(shaded area shown in Fig.
20)
for more effective
cutting.
2.
When the nylon cord wears down (becomes short),
decrease the engine speed to
under 4,000 RPM
and
bump the
knob o f
t h e
nylon cutting head
against the ground to feed out the nylon cord
(Fig. 211.
I
I
Fia.
22
imit mark (notch)
Fig.
19
$i
Shaded area
Fig.
20
I
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Fig.
21
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Parts Breakdown