—
66
—
1. Disconnect spark plug caps.
2. Remove all the dirt from the
base of the spark plugs, then
unscrew it and extract it from
its seat, taking care that
neither
dust
nor
other
substances enter the cylinder.
3. Make sure that there are
neither carbon deposits,
nor corrosion marks on the
electrode and on the central
part: if necessary, clean
them
with
the
special
cleaners for spark plugs, with
an iron wire and
/ or a metal
brush.
4. Energetically blow some air,
in order to prevent the
removed
residues
from
getting into the engine.
Change the spark plugs if it
shows
cracks
on
the
insulating material, corroded
electrodes
or
excessive
deposits.
5. Check the electrode gap
with a thickness gauge. The
gap must be 0.7 ~ 0.8 mm
(0.028
~
0.032
in)
if
necessary, adjust it.
6. Make sure that the washer
is in good condition. Fit the
washer and screw the
spark plug finger-tight to
avoid damaging the thread.
7. Tighten using the spanner
sup- plied with the tool kit.
Screw in each spark plug by
one half turn to compress
the washer.
TIGHTENING TORQUE
SPARK
PLUG
15
—20 N-m
(1.5
—2.0 kgf-m)
PLUG REPLACEMENT GUIDE
Hotter type
CR7E
Standard type
CR8E
Colder type
CR9E
0.7 ~ 0.8 mm
(0.028 ~ 0.032 in)
Summary of Contents for GV125S
Page 101: ...98 Circuit Diagram...
