torque YAMAHA GRIZZLY 125 2012 Owners Manual

8-2
8
EBU27111Owner’s manual and tool kit Be sure to put this owner’s manual in the plastic
bag and to always carry it as well as the owner’s
tool kit and the low-pressure tire gauge in their re-
spective compartments under the seat.
The service information included in this manual
and the tools provided in the owner’s tool kit are in-
tended to assist you in the performance of preven-
tive maintenance and minor repairs. However,additional tools such as a torque wrench may be
necessary to perform certain maintenance work
correctly.
TIPIf you do not have the tools or experience required
for a particular job, have a Yamaha dealer perform
it for you.
1. Owner’s manual
2. Low-pressure tire gauge
3. Owner’s tool kit
1
2 3
U1PY60E0.book Page 2 Friday, March 11, 2011 9:30 AM

8-10
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 erosion
and 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 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. Specified spark plug:
NGK/CR7HSA
1. Spark plug gapSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
U1PY60E0.book Page 10 Friday, March 11, 2011 9:30 AM

8-11
8
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 specified
torque as soon as possible.3. Install the spark plug cap.EBU23268Engine oil The engine oil level should be checked before
each ride. In addition, the oil must be changed 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.
TIPIf 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.
4. Insert the dipstick into the filler hole (without
screwing it in), and then remove it again to
check the oil level. Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)1. Engine oil filler cap
2. Engine oil dipstick
2
1
U1PY60E0.book Page 11 Friday, March 11, 2011 9:30 AM

8-13
8
5. Clean the oil strainer with solvent.
6. Apply a thin coat of clean engine oil to a new
O-ring.
7. Install the oil strainer, the compression spring,
the new O-ring and the engine oil drain bolt.
Tighten the engine oil drain bolt to the speci-
fied torque. NOTICE: Before installing the
engine oil drain bolt, be sure to install the
O-ring, compression spring and oil strain-
er.
[ECB00321]
8. Refill with the specified amount of the recom-
mended engine oil, and then install and tight-
en the engine oil filler cap.TIPBe sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down.NOTICEECB00330
Do not use oils with a diesel specification of
“CD” or oils of a higher quality than speci-
fied. In addition, do not use oils labeled “EN-
ERGY CONSERVING II” or higher.
Make sure that no foreign material enters the
crankcase.
1. Engine oil drain bolt
2. O-ring
3. Spring
4. Oil strainer
4
3
2
1 1
Tightening torque:
Engine oil drain bolt:
32 Nm (3.2 m·kgf, 23 ft·lbf)
Recommended oil:
See page 10-1.
Oil quantity:
1.25 L (1.32 US qt, 1.10 Imp.qt)
U1PY60E0.book Page 13 Friday, March 11, 2011 9:30 AM

8-15
85. Pour the recommended type of oil in the trans-
mission oil filler hole until it flows out of the
check screw hole.
6. Tighten the oil check screw to the specified
torque.
7. Check the oil filler bolt gasket for damage, and
replace it if necessary.8. Install the transmission oil filler bolt and its
gasket, and then tighten the bolt to the speci-
fied torque.
To change the transmission oil
1. Place the ATV on a level surface.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Place an oil pan under the transmission to col-
lect the used oil.
4. Remove the transmission oil filler bolt, the
transmission oil drain bolt and their gasket to
drain the oil from the transmission case.
1. Transmission oil filler bolt
2. GasketTightening torque:
Transmission oil check screw:
16 Nm (1.6 m·kgf, 12 ft·lbf)
1
2
Tightening torque:
Transmission oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
U1PY60E0.book Page 15 Friday, March 11, 2011 9:30 AM

8-16
8 5. Install the drain bolt and its new gasket, and
then tighten the bolt to the specified torque.
6. Refill with the specified amount of the recom-
mended transmission oil. NOTICE: Make
sure that no foreign material enters the
transmission case.
[ECB00791]
7. Check the oil filler bolt gasket for damage, and
replace it if necessary.
8. Install the oil filler bolt and its gasket, and then
tighten the bolt to the specified torque.NOTICEECB01061Make sure that no oil gets on the tires or
wheels.9. Start the engine, and then let it idle for several
minutes while checking the transmission for
oil leakage. If oil is leaking, immediately turn
off the engine and check for the cause.
10. Turn the engine off, and then check the oil lev-
el and correct it if necessary.
1. Transmission oil drain bolt
2. GasketTightening torque:
Transmission oil drain bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
1
12
Recommended transmission oil:
See page 10-1.
Oil quantity:
0.6 L (0.63 US qt, 0.53 Imp.qt)
Tightening torque:
Transmission oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
U1PY60E0.book Page 16 Friday, March 11, 2011 9:30 AM

8-22
8 7. Tap the air filter element lightly to remove
most of the dust and dirt. Blow out the remain-
ing dirt with compressed air as shown.8. Check the air filter element and replace it if
damaged.
9. Install the air filter element into the air filter
case.
10. Install the air filter case cover by installing the
screw.
11. Connect the coupler, and then install the pan-
el by installing the quick fasteners.
12. Install the front carrier by installing the bolts,
and then tighten them to the specified torque.
1. Air filter element
1
1. Air filter elementTightening torque:
Front carrier bolt:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
1
U1PY60E0.book Page 22 Friday, March 11, 2011 9:30 AM

8-23
8
EBU27632Cleaning the spark arrester Be sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1. Remove the tailpipe screws and their gasket.
2. Remove the tailpipe by pulling it out of the
muffler.
3. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from the
spark arrester portion of the tailpipe and inside
of the tailpipe housing.4. Insert the tailpipe into the muffler and align the
screw holes.
5. Check the gaskets for damage, and replace
them if necessary.
6. Install the screws and their gasket, and then
tighten the screws to the specified torque.1. Tailpipe screw
1
1. Tailpipe screw
2. Gasket
3. Tailpipe
4. Spark arresterTightening torque:
Tailpipe screw:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
3
421
U1PY60E0.book Page 23 Friday, March 11, 2011 9:30 AM

8-24
8
WARNING
EWB02340Do not start the engine when cleaning the
spark arrester, otherwise it could cause injury
to the eyes, burns, carbon monoxide poison-
ing, possibly leading to death, and start a fire.
Always let the exhaust system cool prior to
touching exhaust components.EBU30061V-belt case drain screw After riding in water deep enough to allow it to en-
ter the V-belt case, remove this screw to drain the
water from the case.TIPIf water drains from the V-belt case after removing
the screw, have a Yamaha dealer check the ATV
as the water may affect other engine parts.
To drain the water from the V-belt case
1. Place the ATV on a level surface.
2. Place a container under the V-belt case, and
then remove the V-belt case drain screw and
its gasket to drain the water from the V-belt
case.
3. Install the V-belt case drain screw and its new
gasket, and then tighten the screw to the
specified torque.1. V-belt case drain screw
2. Gasket
1
12
U1PY60E0.book Page 24 Friday, March 11, 2011 9:30 AM

8-25
8
EBU23940Adjusting the carburetor The carburetor should be checked and, if neces-
sary, adjusted at the intervals specified in the peri-
odic maintenance and lubrication chart. The
carburetor is an important part of the engine and
requires very sophisticated adjustment. Therefore,
most carburetor adjustments should be left to a
Yamaha dealer, who has the necessary profes-
sional knowledge and experience. The adjustment
described in the following section, however, may
be performed by the owner as part of routine main-
tenance.NOTICEECB00480The carburetor has been set and extensively
tested at the Yamaha factory. Changing these
settings without sufficient technical knowl-
edge may result in poor performance of or
damage to the engine.
EBU24000Adjusting the engine idling speed The engine idling speed must be checked and, if
necessary, adjusted as follows at the intervals
specified in the periodic maintenance and lubrica-
tion chart.TIPA diagnostic tachometer is needed to make this
adjustment.1. Start the engine and warm it up.TIPThe engine is warm when it quickly responds to the
throttle.2. Attach the tachometer to the spark plug lead.
3. Check the engine idling speed and, if neces-
sary, adjust it to specification by turning the
throttle stop screw at the carburetor. To in-
crease the engine idling speed, turn the throt-
tle stop screw in direction (a), and to decrease
it, turn the screw in direction (b). Tightening torque:
V-belt case drain screw:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
U1PY60E0.book Page 25 Friday, March 11, 2011 9:30 AM