8-9
1
2
3
4
5
6
7
8
9
10
11
To check the spark plug
1. Check that the porcelain insulator around the
center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
NOTE:
If the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.
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 thick-
ness gauge and, if necessary, adjust the gap
to specification.
2. Clean the surface of the spark plug gasket
1. Spark plug wrench
1
Specified spark plug:
NGK/CR7HSA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
1. Spark plug gap
Summary of Contents for RAPTOR YFM50RW
Page 2: ......
Page 9: ... 9 2 10 1 11 1 11 1 11 3 11 3 11 5 11 7 ...
Page 17: ...2 1 1 2 3 4 5 6 7 8 9 10 11 RNING AND SPECIFICATION LABELS ...
Page 22: ...3 2 slightly from the figures shown in this manual 4 ...
Page 36: ...4 14 esult in ...
Page 43: ...5 7 1 2 3 4 5 6 7 8 9 10 11 re prop ches are distilled ...
Page 52: ...7 1 DING YOUR ATV ...
Page 93: ...8 15 1 2 3 4 5 6 7 8 9 10 11 ving the 1 Panel 2 Bolt 1 2 2 ...
Page 110: ...8 32 e stand s arrow n of the wheel Front 1 Arrow mark 1 ...
Page 112: ...8 34 ng or ere in l sys mes or s from ...
Page 120: ...10 4 ...
Page 122: ...11 2 o identi n the il abel in e need ha deal 1 Model label 1 ...
Page 124: ...11 4 MILEAGE SERVICING DEALER NAME AND ADDRESS REMARKS ...
Page 129: ...11 9 1 2 3 4 5 6 7 8 9 10 11 ...