2012 Yamaha Motorsports RS Viking Professional Owners Manual - Page 48

2012 Yamaha Motorsports RS Viking Professional Manual

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Periodic maintenance and adjustment ESU13470 Tool kit The service information included in this manual and the tools provided in the owner's tool kit are intended to assist you in the performance of preventive maintenance and minor repairs. However, additional tools such as a torque wrench may be necessary to perform certain maintenance work correctly. V-belt Light bulbs When you start out for a long distance trip, extra fuel should be carried as well. G G ESU11783 Checking the spark plugs The spark plugs are important engine components and are easy to inspect. The condition of the spark plugs 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-tolight tan color for a snowmobile that is being ridden normally. If any 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 plugs because heat and deposits will cause any 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: CR8E EWS00710 1. Tool kit ECS00960 NOTICE Before starting the engine, make sure that the tools are properly seated in their holder. TIP If you do not have a torque wrench available during a service operation requiring one, take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary. ESU14230 Recommended equipment It is good practice to carry the spare parts and other necessary equipment with you while riding the snowmobile so that minor repairs can be done if necessary. The following should be carried at all times: G Flashlight G Roll of plastic tape G Steel wire G Tow rope WARNING Be sure to use the specified spark plug and spark plug cap. Otherwise, the T.O.R.S. may not work properly. 42

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Periodic maintenance and adjustment
42
ESU13470
Tool kit
The service information included in this man-
ual and the tools provided in the owner’s tool
kit are intended to assist you in the perfor-
mance of preventive maintenance and minor
repairs. However, additional tools such as a
torque wrench may be necessary to perform
certain maintenance work correctly.
NOTICE
ECS00960
Before starting the engine, make sure that
the tools are properly seated in their hold-
er.
TIP
If you do not have a torque wrench available
during a service operation requiring one, take
your snowmobile to a Yamaha dealer to
check the torque settings and adjust them if
necessary.
ESU14230
Recommended equipment
It is good practice to carry the spare parts and
other necessary equipment with you while
riding the snowmobile so that minor repairs
can be done if necessary. The following
should be carried at all times:
●
Flashlight
●
Roll of plastic tape
●
Steel wire
●
Tow rope
●
V-belt
●
Light bulbs
When you start out for a long distance trip, ex-
tra fuel should be carried as well.
ESU11783
Checking the spark plugs
The spark plugs are important engine compo-
nents and are easy to inspect. The condition
of the spark plugs 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-
light tan color for a snowmobile that is being
ridden normally. If any spark plug shows a
distinctly 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 plugs because heat and deposits
will cause any spark plug to slowly break
down and erode. Consult a Yamaha dealer
before changing to a different type of spark
plug.
WARNING
EWS00710
Be sure to use the specified spark plug
and spark plug cap. Otherwise, the
T.O.R.S. may not work properly.
1.
Tool kit
Specified spark plug:
Manufacturer:
NGK
Model:
CR8E