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CRANKCASE BREATHER
Remove
the
plug from the
drain
tube
to
empty any
deposits.
Install
the
drain
plug.
NOTE
Service more
frequently when
ridd
en
in
rain
or at
full
throttle
or
if
the deposit
level
can
be seen
in
the transparent
section
of
the
drain
tube.
SPARK PLUG
Disconnect
the
spark plug
cap
and
c
lean
any
dirt
from
around the
spark plug base.
Remove
and
discard the spark
p
lug.
Measure the
spark plug gap with
a wire-type
feeler
gauge.
Adj
us
t
the
gap by
carefully
bend ing the
side
elec-
trode.
SPARK PLUG GAP: 0.8-0.9
mm
10.031-0.035
in)
RECOMMEN DE
D
SPA
R
K
P
LUG
;
For
cold
climate
X22EPR
·U9
NO
(below
SO C/
41
°
F)
DPR7EA·9
NGK
X2
4EPA ·U9
NO
Standard
DPRBEA-9
NGK
For
extended high
X27
EPR
·U9
NO
speed riding
DPA9EA-9
NGK
Make
sure
the
seal ing washer
is
in
good condition.
InstaU
the spark plug,
t igh
ten
it by hand, then
tighten
with
a
spark plug wrench.
Connect
the spark
plug
cap.
VALVE CLEARANCE
NOTE
•
Inspect
and
adju
st valve clearance
while the
engine
is
cold
!Below
35°C/95°
F)
.
•
Make w re that
the
decompressor valves
lifters
have free
play
(page
3·8).
Remove the
seat.
Turn
the
fuel
valve "OFF",
disconnect the fuel
line
and
remove the tank
.
Remove the crankshaft
and timing
mark hole caps.
Remove the
va lve
adjusting
covers.
Rotate the flywheel counterclockwise
to
align the
"T"
mark with
the index mark on
the
left
crank-
case
cover.
Make
su
re
the piston
is
at TDC
(Top
Dead Center)
on
the compression
stroke.
DRA IN
PLUG
MAINTENA
NCE
BREATHER SEPARATOR
TRANSPARENT
SECTION
SIDE ELECTRODE
1::===0.8-0
.
9
mm
(0.031
-
0.035 in)
T
CENTER ELECTRODE
INDE
X MA
RK
'T'MA
RK
3-7
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