2011 Yamaha Motorsports Zuma Owners Manual - Page 45

2011 Yamaha Motorsports Zuma Manual

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EAU1722A PERIODIC MAINTENANCE AND ADJUSTMENT carbon or other deposits, and replace it if necessary. Specified spark plug: BPR7HS (NGK) 1 ZAUM00** 1. Spark plug cap To install the spark plug 1. Measure the spark plug gap with a wire thickness gauge and, if necessary, adjust the gap to specification. 2. Clean the surface of the spark plug gasket and its mating surface, and then wipe off any grime from the spark plug threads. 3. Install the spark plug with the spark plug wrench, and then tighten it to the specified torque. Tightening torque: Spark plug: 20 Nm (2.0 m·kgf, 14.4 ft·lbf) 1 2 3 4 To check the spark plug 1. Check that the porcelain insulator around the center electrode of the spark plug is a medium-tolight tan (the ideal color when the vehicle is ridden normally). TIP If the spark plug shows a distinctly different color, the engine could be operating improperly. Do not attempt to diagnose such problems yourself. Instead, have a Yamaha dealer check the vehicle. 2. Check the spark plug for electrode erosion and excessive 6-9 ZAUM00** TIP If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4 1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. 4. Install the spark plug cap. 5. Install the panel. 5 6 7 8 9 1 1. Spark plug gap Spark plug gap: 0.6 - 0.7 mm (0.024 - 0.028 in)

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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
ZAUM00**
1
1. Spark plug cap
To check the spark plug
1. Check that the porcelain insula-
tor 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
different color, the engine could be
operating improperly. Do not attempt
to diagnose such problems yourself.
Instead, have a Yamaha dealer check
the vehicle.
2. Check the spark plug for elec-
trode erosion and excessive
carbon or other deposits, and re-
place it if necessary.
Specified spark plug:
BPR7HS (NGK)
To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specification.
ZAUM00**
1
1. Spark plug gap
Spark plug gap:
0.6 - 0.7 mm (0.024 - 0.028 in)
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then
tighten it to the specified torque.
Tightening torque:
Spark plug:
20 Nm (2.0 m·kgf, 14.4 ft·lbf)
TIP
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4 -
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.
4. Install the spark plug cap.
5. Install the panel.