8-10
8
TIP
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.
3. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
To install the spark plug
1. Clean the surface of the spark plug gasket
and its mating surface, and then wipe off any
grime from the spark plug threads.
2. Install the spark plug with the spark plug
wrench, and then tighten it to the specified
torque.
Specified spark plug:
NGK/CR6HSA
1. Spark plug gap
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
UBD362E0.book Page 10 Tuesday, January 31, 2017 5:10 PM
Summary of Contents for YFM90RYXJ
Page 2: ...DIC183 Original instructions Notice originale Manual original PRINTED IN TAIWAN 2017 02 E F S ...
Page 13: ...1 2 1 BD3 F816R 20 BD3 F816L 50 1 3 2 UBD362E0 book Page 2 Tuesday January 31 2017 5 10 PM ...
Page 18: ...1 7 1 For Mexico 1 3 4 2 UBD362E0 book Page 7 Tuesday January 31 2017 5 10 PM ...
Page 19: ...1 8 1 BD3 F816R 20 BD3 F816L 50 1 2 UBD362E0 book Page 8 Tuesday January 31 2017 5 10 PM ...
Page 21: ...1 10 1 For Oceania 2 1 3 4 UBD362E0 book Page 10 Tuesday January 31 2017 5 10 PM ...
Page 30: ...2 7 2 UBD362E0 book Page 7 Tuesday January 31 2017 5 10 PM ...
Page 62: ...7 1 7 EBU21142 RIDING YOUR ATV UBD362E0 book Page 1 Tuesday January 31 2017 5 10 PM ...
Page 129: ...11 2 11 1 Model label 1 UBD362E0 book Page 2 Tuesday January 31 2017 5 10 PM ...