2011 Yamaha Motorsports Big Bear 400 4x4 IRS Owners Manual - Page 91

2011 Yamaha Motorsports Big Bear 400 4x4 IRS Manual

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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. Tightening torque: Spark plug: 18 Nm (1.8 m·kgf, 13 ft·lbf) TIP If a torque wrench is not available when installing the 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. 3. Install the spark plug cap. EBU2327D Engine oil and oil filter element The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter element cleaned at the intervals specified in the periodic maintenance and lubrication chart. To check the engine oil level 1. Place the ATV on a level surface. 2. Check the engine oil level on a cold engine. TIP If the engine was started before checking the oil level, be sure to warm up the engine sufficiently, and then wait at least ten minutes until the oil settles for an accurate reading. 3. Remove the engine oil filler cap, and then wipe the engine oil dipstick off with a clean rag. 8 8-11

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8-11
8
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.
TIP
If a torque wrench is not available when installing
the 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.
3.
Install the spark plug cap.
EBU2327D
Engine oil and oil filter element
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element cleaned at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the engine oil level
1.
Place the ATV on a level surface.
2.
Check the engine oil level on a cold engine.
TIP
If the engine was started before checking the oil
level, be sure to warm up the engine sufficiently,
and then wait at least ten minutes until the oil set-
tles for an accurate reading.
3. Remove the engine oil filler cap, and then
wipe the engine oil dipstick off with a clean
rag.
Tightening torque:
Spark plug:
18 Nm (1.8 m·kgf, 13 ft·lbf)