2010 YAMAHA GRIZZLY 550 differential

8-30
85. Refill with the recommended differential gear
oil to the brim of the filler hole as shown.
NOTICE: Be sure no foreign material en-
ters the differential gear case.
[ECB00411]
6. Install the oil filler bolt, and then tighten it to the
specified torque.7. Check the differential gear case for oil leak-
age. If oil is leaking, check for the cause.
EBU23470Coolant The coolant level should be checked before each
ride. In addition, the coolant must be changed at
the intervals specified in the periodic maintenance
and lubrication chart.EBU27124To check the coolant level
1. Place the ATV on a level surface.TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture.2. Check the coolant level in the coolant reser-
voir.
1. Differential gear oil
2. Differential gear oil filler bolt
3. Correct oil levelRecommended differential gear oil:
See page 10-1.
Tightening torque:
Differential gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
U28P61E0.book Page 30 Wednesday, March 18, 2009 9:25 AM

10-2
10
Type:
SAE 5W-30, 10W-30, 10W-40, 15W-40, 20W-40 or 20W-
50
Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Engine 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)Final gear oil:Type:
SAE 80 API GL-4 Hypoid gear oil
Quantity:
0.20 L (0.21 US qt, 0.18 Imp.qt)
Differential gear oil:Type:
SAE 80 API GL-4 Hypoid gear oil
Quantity:
0.22 L (0.23 US qt, 0.19 Imp.qt)Cooling system:Coolant reservoir capacity (up to the maximum level mark):
0.24 L (0.25 US qt, 0.21 Imp.qt)
Radiator capacity (including all routes):
1.99 L (2.10 US qt, 1.75 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
YFM550FAPZ Unleaded gasoline only
YFM550FAZ Unleaded gasoline only
YFM5FGPHZ Regular unleaded gasoline only
YFM5FGPZ Regular unleaded gasoline only
YFM5FGZ Regular unleaded gasoline only
Fuel tank capacity:
20.0 L (5.28 US gal, 4.40 Imp.gal)
Fuel reserve amount:
4.5 L (1.19 US gal, 0.99 Imp.gal)Fuel injection:Throttle body:
Type/quantity:
40EIS/1Spark plug (s):Manufacturer/model:
NGK/LMAR6A-9
0 10 30 50 70 90 110 130 ˚F -20 -10 0 10 20 30 40 50 ˚CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
U28P61E0.book Page 2 Wednesday, March 18, 2009 9:25 AM

10-5
10
Tail/brake light:
12 V, 5.0/21.0 W × 1
Meter lighting:
EL
Neutral indicator light:
LED
Reverse indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
EPS warning light:
YFM550FAPZ LED
YFM5FGPHZ LED
YFM5FGPZ LED
Park indicator light:
LED
On-Command four-wheel-drive/differential gear lock
indicator:
LCD
High-range indicator light:
LED
Low-range indicator light:
LED
Differential gear lock indicator light:
LEDFuses:Main fuse:
40.0 A
Fuel injection system fuse:
15.0 AEPS fuse:
YFM550FAPZ 40.0 A
YFM5FGPHZ 40.0 A
YFM5FGPZ 40.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
5.0 A
Ignition fuse:
15.0 A
Auxiliary DC jack fuse:
15.0 A
Four-wheel-drive motor fuse:
15.0 A
Radiator fan fuse:
20.0 A
U28P61E0.book Page 5 Wednesday, March 18, 2009 9:25 AM

INDEX
AAccessories and loading ................................................ 6-6
Accessories, auxiliary jack ........................................... 4-23
Air filter element, cleaning ............................................ 8-36
Axle boots .................................................................... 8-49BBattery .......................................................................... 8-53
Brake fluid, changing .................................................... 8-46
Brake fluid level, checking ............................................ 8-45
Brake hose protectors, checking the rear .................... 8-44
Brake lever, front .......................................................... 4-14
Brake levers, checking and lubricating ......................... 8-50
Brake pads, checking the front and rear ...................... 8-43
Brake pedal and rear brake lever ................................. 4-14
Brake pedal, checking and lubricating ......................... 8-51
Brake pedal free play, adjusting ................................... 8-47
Brakes .......................................................................... 8-43
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-50
Carrier, front ................................................................. 4-21
Carrier, rear .................................................................. 4-21
Chassis fasteners ........................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................. 5-3, 8-30
Coolant temperature warning light ................................. 4-2DDifferential gear oil ................................................ 5-3, 8-28Drive select lever .......................................................... 4-15
Drive select lever and driving in reverse ........................ 6-2
Drive select lever safety system cable, adjusting ......... 8-43
EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-22
Engine stop switch ......................................................... 4-7
Engine trouble warning light ........................................... 4-3
EPS warning light (for EPS model) ................................ 4-3FFinal gear oil .......................................................... 5-3, 8-26
Four-wheel-drive/differential gear lock indicator ............ 4-4
Front and rear brake lever free play, checking ............. 8-46
Fuel ....................................................................... 4-16, 5-3
Fuel tank cap ................................................................ 4-15
Fuses, replacing ........................................................... 8-56HHandlebar switches ........................................................ 4-7
Headlight beam, adjusting ............................................ 8-59
Headlight bulb, replacing .............................................. 8-58
High-range indicator light ............................................... 4-4
Horn switch .................................................................... 4-8IIdentification numbers .................................................. 11-1
Indicator lights and warning lights .................................. 4-2
Instruments, lights and switches .................................... 5-7
U28P61E0.book Page 1 Wednesday, March 18, 2009 9:25 AM

KKey identification number ............................................. 11-1LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-8
Low-range indicator light ................................................ 4-4MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................. 8-4
Maintenance chart, emission control system ................. 8-3
Model label ................................................................... 11-2
Multi-function display ..................................................... 4-5NNeutral indicator light ..................................................... 4-2OOn-Command differential gear lock switch .................. 4-10
On-Command four-wheel-drive switch ........................... 4-9
Override switch .............................................................. 4-8
Owner’s manual and tool kit ........................................... 8-1PPanels, removing and installing ..................................... 8-8
Park indicator light ......................................................... 4-4
Parking ........................................................................... 6-5
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRadiator grills, removing .............................................. 8-19
Rear knuckle pivots, lubricating ................................... 8-52
Reverse indicator light ................................................... 4-2
Riding your ATV ............................................................. 7-1
SSafety information .......................................................... 2-1
Seat ............................................................................. 4-18
Shock absorber assemblies, adjusting the front and
rear ............................................................................ 4-21
Spark arrester, cleaning ............................................... 8-40
Spark plug, checking ................................................... 8-20
Specifications ............................................................... 10-1
Speed limiter ................................................................ 4-13
Stabilizer bushes, checking ......................................... 8-52
Starting the engine ......................................................... 6-1
Start switch .................................................................... 4-8
Steering shaft, lubricating ............................................ 8-52
Storage .......................................................................... 9-2
Storage compartments ................................................ 4-18TTail/brake light bulb, replacing ..................................... 8-60
Throttle cable free play, adjusting ................................ 8-42
Throttle lever ......................................................... 4-13, 5-4
Tires ............................................................................... 5-4
Troubleshooting ........................................................... 8-62
Troubleshooting charts ................................................ 8-63VValve clearance ........................................................... 8-43
V-belt case drain plug .................................................. 8-41
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-52
Wheel, installing ........................................................... 8-61
Wheel, removing .......................................................... 8-61
U28P61E0.book Page 2 Wednesday, March 18, 2009 9:25 AM