PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6
EAU03837
Checking the spark plugs
The spark plugs are important engine
components, which are easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plugs should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
To remove a spark plug
1. Remove cowlings A and C. (See
pages 6-5 and 6-6 for cowling re-
moval and installation proce-
dures.)
2. Remove the spark plug cap.
3. Remove the spark plug as shown
with the spark plug wrench includ-
ed in the owner’s tool kit.
To check the spark plugs
1. Check that the porcelain insulator
around the center electrode on
each spark plug is a medium-to-
light tan (the ideal color when the
motorcycle is ridden normally).
2. Check that all spark plugs installed
in the engine have the same color.
NOTE:
_
If any spark plug shows a distinctly dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the motorcycle.
_
3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
1. Spark plug cap (
×
4)
1. Spark plug wrench
Specified spark plug:
DR8EA (NGK) or
X24ESR-U (DENSO)
E_4sv.book Page 7 Friday, November 10, 2000 3:03 PM
Содержание Thunderace YZF1000R
Страница 1: ...4SV 28199 E4 OWNER S MANUAL YZF1000R ...
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Страница 35: ...PRE OPERATION CHECKS 4 Pre operation check list 4 1 E_4sv book Page 1 Friday November 10 2000 3 03 PM ...
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Страница 89: ...MOTORCYCLE CARE AND STORAGE 7 Care 7 1 Storage 7 4 E_4sv book Page 1 Friday November 10 2000 3 03 PM ...
Страница 95: ...SPECIFICATIONS 8 Specifications 8 1 Conversion table 8 5 E_4sv book Page 1 Friday November 10 2000 3 03 PM ...
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Страница 108: ...PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD PRINTED IN JAPAN 2000 10 0 3 1 CR E ...