2012 YAMAHA GRIZZLY 350 oil change

8-7
8
14*Engine mount 
Check for cracks or other damage, and replace if
necessary. √√√
15 *Axle boots 
Check for cracks or other damage, and replace if
necessary. √√√√√
16 Engine oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √ √√√
17 Engine oil filter car-
tridge 
Replace. √√√
18 Differential gear oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √√
19 Final gear oil 
Change.
 Check ATV for oil leakage, and correct if neces-
sary. √√
20 *Moving parts and
cables 
Lubricate. √√√√
21 *Drive select lever
safety system cable 
Check operation and adjust or replace if neces-
sary. √√√
22 *Throttle lever 
Check operation.
 Check throttle lever free play, and adjust if neces-
sary.
 Lubricate cable and lever housing. √√√√√
NO. ITEM
CHECK OR MAINTENANCE
JOB INITIAL EVERY
Whichev- er comes first month136612
km
(mi) 320
(200) 1300
(800) 2500
(1600) 2500
(1600) 5000
(3200)
hours 20 80 160 160 320U1NS60E0.book Page 7 Monday, August 1, 2011 4:12 PM

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.EBU23319Engine oil and oil filter cartridge The 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 spec-
ified 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:18 Nm (1.8 m ·kgf, 13 ft ·lbf)1. Engine oil filler cap
U1NS60E0.book Page 11 Monday, August 1, 2011 4:12 PM

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8
TIPThe engine oil should be between the tip of the dip-
stick and the maximum level mark.5. If the engine oil is not between the tip of thedipstick and the maximum level mark, add
sufficient oil of the recommended type to raise
it to the correct level. NOTICE: Be sure the
engine oil is at the correct level, otherwise
engine damage may result.
[ECB00851]
6. Insert the dipstick into the oil filler hole, and then tighten the engine oil filler cap. To change the engine oil (with or without oil fil-
ter cartridge replacement)
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 engine to collect the used oil.
4. Remove the engine oil filler cap, and then re- move the engine oil drain bolt and its gasket to
drain the oil from the crankcase.1. Engine oil dipstick
2. Maximum level mark
3. Tip of the engine oil dipstick
1. Engine oil drain bolt
2. Gasket
1
1
2
U1NS60E0.book Page 12 Monday, August 1, 2011 4:12 PM

8-15
8
9. 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.NOTICEECB00300
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.10. 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.
11. Turn the engine off, wait at least ten minutes, and then check the oil level and correct it if
necessary.EBU23386Final gear oil The 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 specified
in the periodic maintenance and lubrication chart.
To check the final gear oil level1. Place the ATV on a level surface.
2. Remove the final gear oil filler bolt and its gas- ket, and then check the oil level in the final
gear case. The oil level should be at the brim
of the filler hole.
Recommended oil:
See page 10-1.
Oil quantity: Without oil filter cartridge replacement:2.20 L (2.33 US qt, 1.94 Imp.qt)
With oil filter cartridge replacement: 2.30 L (2.43 US qt, 2.02 Imp.qt)
U1NS60E0.book Page 15 Monday, August 1, 2011 4:12 PM

8-16
83. If the oil is below the brim of the filler hole, add
sufficient oil of the recommended type to raise
it to the correct level.
4. Check the gasket for damage, and replace it if necessary.
5. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque. To change the final gear oil
1. Place the ATV on a level surface.
2. Remove the final gear case guard by remov- ing the bolts.
3. Place an oil pan under the final gear case to collect the used oil.
4. Remove the final gear oil filler bolt, the final gear oil drain bolt, and their gasket to drain the
oil from the final gear case.
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil
4. Correct oil levelTightening torque:Final gear oil filler bolt:23 Nm (2.3 m ·kgf, 17 ft· lbf)1
2
3
4
1. Final gear case guard
2. Bolt
U1NS60E0.book Page 16 Monday, August 1, 2011 4:12 PM

8-18
89. Check the final gear case for oil leakage. If oil
is leaking, check for the cause.
10. Install the final gear case guard by installing the bolts and tightening them to the specified
torque.
EBU23436Changing the differential gear oil The differential gear case must be checked for oil
leakage before each ride. If any leakage is found,
have a Yamaha dealer check and repair the ATV.
In addition, the differential gear oil must be
changed as follows at the intervals specified in the
periodic maintenance and lubrication chart.1. Place the ATV on a level surface.
2. Place an oil pan under the differential gear case to collect the used oil.
3. Remove the differential gear oil filler bolt, the differential gear oil drain bolt and their gasket
to drain the oil from the differential gear case.
Tightening torque:
Final gear case guard bolt:16 Nm (1.6 m ·kgf, 12 ft· lbf)
1. Differential gear oil filler bolt
2. Gasket
1. Differential gear oil drain bolt
2. Gasket
12
12
U1NS60E0.book Page 18 Monday, August 1, 2011 4:12 PM

8-30
8brake pads for wear and the brake system for leak-
age. If the brake fluid level goes down suddenly,
have a Yamaha dealer check the cause before fur-
ther riding.
EBU24281Changing the brake fluid Have a Yamaha dealer change the brake fluid at
the intervals specified in the TIP after the periodic
maintenance and lubrication chart. In addition,
have the oil seals of the brake master cylinder and
calipers as well as the brake hoses replaced at the
intervals listed below or whenever they are dam-
aged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.EBU24394Checking the front brake lever free play The brake lever free play must be checked at the
intervals specified in the periodic maintenance and
lubrication chart. The brake lever should have no
free play as shown. If there is free play, have a
Yamaha dealer check the brake system.
EBU30690Adjusting the brake pedal height, and
the brake pedal and rear brake lever
free play The brake pedal height, brake pedal free play, and
rear brake lever free play must be checked and, if
necessary, adjusted at the intervals specified in the
periodic maintenance and lubrication chart.TIP
Always perform this maintenance completely in
the following order whenever adjusting the rear
brake.1. No brake lever free play
U1NS60E0.book Page 30 Monday, August 1, 2011 4:12 PM