Ignition Timing Check - Yamaha SZR 660 Service Manual

SPARK PLUG INSPECTION
INSP
ADJ
ra
6.
Clean:
•
The spark plug
with a suitable tool
and
a
steel brush
7.
Measure:
• Spark plug electrode gap
{a)
Use a
wire or thickness
gauge
Out
of specification
-* Regap.
m
Electrode gap:
0.8-0.9
mm
8.
Tight:
Spark
pfug
Spark
plug:
18Nm(1.8mkg)
NOTES:
Before
installing the
spark
plug, clean the surface
and
thread.
Tighten the spark plug
by hand
before torquing
to
specification.
9.
Connect:
• Spark
plug cap
10.
Install:
•
Air panel
•
Air
cleaner case
•
Fuel tank
• Seat
\
Bolt
(air
cleaner case):
5
Nm
(0.5
mkg)
Carburetor manifold clamp
(L):
2
Nm
(0.2
mkg)
Carburetor manifold clamp
(R);
5
Nm
(0.5
mkg)
Screws
(fuel tank):
10
Nm
(1.0
mkg)
\
^*
,.,
*
*
ip c c
^
IGNITION
TIMING
CHECK
INSP
ADJ
pa
IGNITION TIMING
CHECK
NOTE:
Before checking
the ignition timing adjust thethrottle
cable free play
and
the engine
idle
speed.
1
Start the engine
and
let
it
heat.
2.
Connect:
•
Inductive
rev.
counter
•
Stroboscopic lamp
to
spark
plug cable
Inductive engine speed indicator:
P/N.
YU-08036-A
P/N.
90890-03113
Stroboscopic lamp;
P/N. YM-33277-A
P/N.
90890-03141
3.
Remove:
• Cap(1)
CAUTION:
In
certain
conditions, the
oi!
might spray
out
when
the cap
is
removed. Be
careful therefore
when removing
the cap.
4.
Check:
• Advance
ignition
* *
a-
*
Check:
• Heat engine and
let
it
run
to
the
number
of
revs
required.
C\
Engine speed:
1,300
rpm
* Check
that
the
firm
reference
(1 )
is in
the
field of
reference
mobile
(2)
on the
flywheel.
Incorrect ignition timing
-» Check
the
ignition
coit
unit.
NOTE:
_____™„ m
.
Ignition
timing cannot be adjusted-
********
**>*«*********#
***«
5.
6,
Install:
•
Cap
Remove:
• Stroboscopic lamp
•
Inductive
engine speed
indicator
3-13
3-14