Makita RBC25A Instruction Manual page 9

DAILY CHECK-UP AND MAINTENANCE
cover
r cleaner case
cleaner
cover
I
Sponge element
Fig.
12
Fig.
13
0.6
mm
-
0.7
mm
(0.024"
-
0.028")
1.
2.
3.
4.
5.
6.
7.
a.
9.
10.
11.
Fig.
14
I
Fig. 15
Before operation, pay particular attention to the tightness o f
t h e
nylon cutting head. Re-tighten
the
nylon
cutting head
if
necessary (every
8
hours or daily).
Check for clogged cooling air passage and cylinder fins. Clean them
if
necessary (every
8
hours or daily).
Clean the air cleaner every
8
hours or daily, using the following procedure:
i).
Remove the air cleaner cover. Clean the sponge element and remove any excessive
dust
or
dirt
adhering to the cleaner (Fig. 12 and
13). A
clogged air cleaner may make it difficult or impossible to
start the engine or to increase the engine rotational speed
ii).
Re-install the sponge element around the
ribs
of the air cleaner case.
Check the spark plug every
8
hours or daily.
The gap between the two electrodes of
t h e
spark plug should be
0.6
to
0.7
mm (0.024" to
0.028").
If
the gap i s too wide or too narrow, adjust it.
If
the spark plug is clogged
with
carbon or fouled, clean it thoroughly or replace it (Fig.
14).
Apply grease (SHELL ALVANIA No.
3
or equivalent) to the gear case through the grease hole every
30
hours (Fig. 15).
FOR RBC25A ONLY
Apply
grease (SHELL
ALVANIA
No.
2
or equivalent) to the flexible shaft every
50
hours.
i). Pull
the gear case from the drive shaft after removing bolts.
ii).
Pull the flexible shaft out o f the drive shaft housing. Apply grease to the drive shaft.
Clean the muffler exhaust port every
50
hours or monthly.
Check the fuel filter.
If
clogged, replace it
with
a new one every
50
hours or monthly.
Replace the fuel lines every
200
hours or yearly.
Overhaul the engine every 200 hours or yearly.
Replace the packing and gaskets
with
new ones every time the engine is reassembled.
9