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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU19603
Checking the spark plug
The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.
To check the spark plug
1. Check that the porcelain insulator
around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIP
If the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.
2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1. Spark plug cap
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1. Spark plug wrench
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Specified spark plug:
PW50
NGK/BPR4HS
PW50Z NGK/BPR4HS
DENSO/W14FPL
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
1
Содержание PW50(Z)
Страница 3: ...5PG 28199 89 E0 PW50 Z OWNER S MANUAL Read this manual carefully before operating this vehicle ...
Страница 12: ...F IMPORTANT LABELS 1 3 3 2 1 ...
Страница 15: ...LOCATION OF IMPORTANT LABELS 1 6 1 2 3 4 5 6 7 8 9 h Africa 1 2 ...
Страница 21: ...3 1 2 3 4 5 6 7 8 9 DESCRIPTION EAU10410 1 2 3 4 5 e 7 10 7 8 ...
Страница 22: ...N 3 2 EAU10420 3 1 2 4 page 7 7 page 4 5 ...
Страница 23: ...DESCRIPTION 3 3 2 3 4 5 6 7 8 9 EAU10430 uments 1 2 7 3 4 5 6 4 3 ge 4 6 cap page 4 5 4 1 4 2 ...
Страница 59: ...PERIODIC MAINTENANCE AND ADJUSTMENT 7 23 2 3 4 5 6 7 8 9 Gasoline or ignite or ex ere injury or ...
Страница 70: ...ED PAPER YAMAHA MOTOR CO LTD PRINTED IN JAPAN 2009 04 0 5 1 E ...