2009 Yamaha Motorsports Phazer R-TX Owners Manual - Page 58

2009 Yamaha Motorsports Phazer R-TX Manual

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Periodic maintenance and adjustment To install an upper cover 1. Insert the projections on the upper cover into the slots, fit the holders on the cover onto the grommets, and then tighten the fasteners. ECS00371 NOTICE G G Make sure that all cables, leads, etc., are routed properly before installing the shroud and covers. When installing the shroud and covers, be sure to tighten the fasteners securely. ESU11782 Checking the spark plugs The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate the condition of the engine. Check the coloration on the white porcelain insulator around the center electrode. The ideal coloration at this point is a medium to a light tan color for a snowmobile that is being ridden normally. If a spark plug shows a distinctly different color, there could be something wrong with the engine. For example, a very white center electrode porcelain color could indicate an intake track air leak or carburetion problem for that cylinder. Do not attempt to diagnose such problems yourself. Instead, take the snowmobile to a Yamaha dealer for inspection and possible repairs. You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode. Consult a Yamaha dealer before changing to a different type of spark plug. Specified spark plug: Manufacturer: NGK Model: CR9EKB 1. Slot 1. Projection 2. Holder 1. Grommet 2. Close the shroud. 52

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Periodic maintenance and adjustment
52
To install an upper cover
1.
Insert the projections on the upper cover
into the slots, fit the holders on the cover
onto the grommets, and then tighten the
fasteners.
2.
Close the shroud.
NOTICE
ECS00371
●
Make sure that all cables, leads, etc., are
routed properly before installing the
shroud and covers.
●
When installing the shroud and covers,
be sure to tighten the fasteners secure-
ly.
ESU11782
Checking the spark plugs
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate the condition of
the engine.
Check the coloration on the white porcelain
insulator around the center electrode. The
ideal coloration at this point is a medium to a
light tan color for a snowmobile that is being
ridden normally. If a spark plug shows a dis-
tinctly different color, there could be some-
thing wrong with the engine. For example, a
very white center electrode porcelain color
could indicate an intake track air leak or car-
buretion problem for that cylinder. Do not at-
tempt to diagnose such problems yourself.
Instead, take the snowmobile to a Yamaha
dealer for inspection and possible repairs.
You should periodically remove and inspect
the spark plug because heat and deposits will
cause a spark plug to slowly break down and
erode. Consult a Yamaha dealer before
changing to a different type of spark plug.
1. Projection
2. Holder
1. Grommet
1. Slot
Specified spark plug:
Manufacturer:
NGK
Model:
CR9EKB