2008 Yamaha Motorsports Phazer GT Owners Manual - Page 54

2008 Yamaha Motorsports Phazer GT Manual

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Periodic maintenance 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. EWS00090 WARNING G G G Do not drive the snowmobile with the shroud or covers unfastened or removed. Keep your body and clothing away from rotating parts when servicing the snowmobile with the shroud or covers removed. Do not touch the hot muffler and engine during or immediately after operation. ECS00370 CAUTION: 1. Projection 2. Holder Make sure that all cables, leads, etc., are routed properly before installing the shroud and covers. NOTE: When installing the covers, be sure to tighten all fasteners securely. ESU11780 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. 1. Grommet 1. Slot 2. Close the shroud. 48

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Periodic maintenance
48
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.
WARNING
EWS00090
●
Do not drive the snowmobile with the
shroud or covers unfastened or re-
moved.
●
Keep your body and clothing away from
rotating parts when servicing the snow-
mobile with the shroud or covers re-
moved.
●
Do not touch the hot muffler and engine
during or immediately after operation.
CAUTION:
ECS00370
Make sure that all cables, leads, etc., are
routed properly before installing the
shroud and covers.
NOTE:
When installing the covers, be sure to tighten
all fasteners securely.
ESU11780
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.
1. Projection
2. Holder
1. Grommet
1. Slot