ELECTRICAL/SPARK PLUG INSPECTION
3-41
EC370000
ELECTRICAL
EC371001
SPARK PLUG INSPECTION
1. Remove:
• Spark plug
2. Inspect:
• Electrode
1
Wear/Damage
≥
Replace.
• Insulator color
2
Normal condition is a medium to light tan
color.
Distinctly different color
≥
Check the
engine condition.
NOTE:
When the engine runs for many hours at low
speeds, the spark plug insulator will become
sooty, even if the engine and carburetor are in
good operating condition.
3. Measure:
• Plug gap
a
Use a wire gauge or thickness gauge.
Out of specification
≥
Regap.
Spark plug gap:
0.5~0.6 mm (0.020~0.024 in)
a
Standard spark plug:
R6179A-105P
%
4. Clean the plug with a spark plug cleaner if
necessary.
5. Tighten:
• Spark plug
T
19 Nm (1.9 m
d
kg, 13 ft
d
lb)
NOTE:
• Before installing a spark plug, clean the gas-
ket surface and plug surface.
• Finger-tighten
a
the spark plug before
torquing to specification
b
.
INSP
ADJ
Summary of Contents for TZ250M1
Page 1: ...5KE 28199 10 LIT 11626 13 41 OWNER S SERVICE MANUAL TZ250M1 M...
Page 11: ...MEMO...
Page 15: ...CHAPTER 7 TUNING ENGINE 7 1 CHASSIS 7 14...
Page 287: ...99 9 0 1x1...