2015 YAMAHA GRIZZLY 550 Owners Manual

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8
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV. 2. Check the spark plug for electrode erosionand excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap
to specification.
To install the spark plug1. 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.
Specified spark plug:
NGK/LMAR6A-9
1. Spark plug gapSpark plug gap:0.8–0.9 mm (0.031–0.035 in)
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TIPIf 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 speci-
fied torque as soon as possible. 3. Install the spark plug cap.EBU27468Engine oil and oil filter cartridgeThe engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter cartridge replaced at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the engine oil level1. Place the ATV on a level surface.
2. Check the engine oil level on a cold engine.
TIPIf the engine was started before checking the oil
level, be sure to warm up the engine sufficiently,
and then wait at least 10 minutes until the oil set-
tles for an accurate reading. 3. Remove the access cover by turning it coun- terclockwise.
4. Remove the engine oil dipstick, and then wipe it off with a clean rag.
Tightening torque:
Spark plug:13 Nm (1.3 m·kgf, 9.4 ft·lbf)1. Access cover
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5. Insert the dipstick completely into the oil filler
hole, and then remove it again to check the oil
level.
TIPThe engine oil should be between the minimum
and maximum level marks.
6. If the engine oil is at or below the minimumlevel mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
NOTICE: Be sure the engine oil is at the
correct level, otherwise engine damage
may result.
[ECB00852]
7. Insert the dipstick completely into the oil filler hole.
8. Install the access cover by turning it clock- wise.
1. Engine oil dipstick
1. Maximum level mark
2. Minimum level mark
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8-24
8To change the engine oil (with or without oil fil-
ter cartridge replacement)
1. Place the ATV on a level surface.
2. Remove the access cover by turning it coun- terclockwise.
3. Place an oil pan under the engine to collect the used oil.
4. Remove the dipstick, and then remove the engine oil drain bolt and its gasket to drain the
oil from the crankcase.
TIPSkip steps 5–9 if the oil filter cartridge is not being
replaced. 5. Remove panel F. (See page 8-10.)
6. Remove the oil filter cartridge with an oil filterwrench.TIPAn oil filter wrench is available at a nearby Yamaha
dealer. 7. Apply a thin coat of engine oil to the O-ring ofthe new oil filter cartridge.
1. Engine oil drain bolt
2. Gasket
12
1. Oil filter cartridge
2. Oil filter wrench
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TIPMake sure that the O-ring is properly seated. 8. Install the new oil filter cartridge with an oil fil-ter wrench, and then tighten it to the specified
torque with a torque wrench. 9. Install panel F.
10. Install the engine oil drain bolt and its new gasket, and then tighten the bolt to the spec-
ified torque.1. O-ring
1. Torque wrenchTightening torque:Oil filter cartridge:17 Nm (1.7 m·kgf, 12 ft·lbf)
Tightening torque: Engine oil drain bolt:30 Nm (3.0 m·kgf, 22 ft·lbf)
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811. Refill with the specified amount of the recom-
mended engine oil, and then insert the dip-
stick completely into the oil filler hole.
TIPBe sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down. NOTICEECB00301In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING II” or higher. 
Make sure that no foreign material enters the
crankcase.
12. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
13. Turn the engine off, wait at least ten minutes, and then check the oil level and correct it if
necessary.
14. Install the access cover by turning it clock- wise.EBU27307Final gear oilThe final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the final gear oil level1. Place the ATV on a level surface.
Recommended oil:
See page 10-1.
Oil quantity: Without oil filter cartridge replacement:2.00 L (2.11 US qt, 1.76 Imp.qt)
With oil filter cartridge replacement: 2.10 L (2.22 US qt, 1.85 Imp.qt)
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2. Remove the final gear oil level check bolt and
its gasket, and then check the oil level in the
final gear case. The oil level should be at the
brim of the check hole.
3. If the oil is below the brim of the check hole, remove the final gear oil filler bolt and its gas-
ket, and then add sufficient oil of the recom-
mended type to raise it to the correct level. 4. Check the gaskets for damage, and replace
them if necessary.
5. Install the oil level check bolt, the oil filler bolt and their gasket, and then tighten the bolts to
the specified torques.
1. Final gear oil
2. Gasket
3. Final gear oil level check bolt
4. Correct oil level
1
243
1. Final gear oil filler bolt
2. GasketTightening torques:Final gear oil level check bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Final gear oil filler bolt: 23 Nm (2.3 m·kgf, 17 ft·lbf)
1
2
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8To change the final gear oil
1. Place the ATV on a level surface.
2. Place an oil pan under the final gear case to collect the used oil.
3. Remove the final gear oil filler bolt, the final gear oil level check bolt, the final gear oil drain
bolt and their gasket to drain the oil from the
final gear case.
4. Install the drain bolt and its new gasket, and then tighten the bolt to the specified torque. 5. Refill with the recommended final gear oil to
the brim of the check hole as shown.
NOTICE: Be sure no foreign material en-
ters the final gear case.
[ECB00422]
1. Final gear oil drain bolt
2. Gasket
12
Tightening torque: Final gear oil drain bolt:23 Nm (2.3 m·kgf, 17 ft·lbf)1. Final gear oil
2. Gasket
3. Final gear oil level check bolt
4. Correct oil levelRecommended final gear oil:See page 10-1.
1
243
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