2015 YAMAHA GRIZZLY 550 radiator

Parking ........................................................ 6-5
Parking on a slope ...................................... 6-5
Accessories and loading ............................. 6-6
RIDING YOUR ATV ........................................ 7-1 GETTING TO KNOW YOUR ATV ................ 7-2
RIDE WITH CARE AND GOOD JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............... 7-9
TURNING YOUR ATV................................ 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL .................................. 7-16
CROSSING A SLOPE................................ 7-17
CROSSING THROUGH SHALLOW WATER .................................................... 7-18
RIDING OVER ROUGH TERRAIN ............. 7-21
SLIDING AND SKIDDING .......................... 7-21
WHAT TO DO IF... ..................................... 7-22
WHAT TO DO... ......................................... 7-23
PERIODIC MAINTENANCE AND
ADJUSTMENT................................................ 8-1 Owner’s manual and tool kit ....................... 8-2
Periodic maintenance chart for the emission control system ........................... 8-3
General maintenance and lubrication chart .......................................................... 8-5 Removing and installing panels ................ 8-10
Removing the radiator grills ...................... 8-19
Checking the spark plug........................... 8-20
Engine oil and oil filter cartridge ............... 8-22
Final gear oil ............................................. 8-26
Differential gear oil .................................... 8-29
Coolant ..................................................... 8-31
Cleaning the air filter element ................... 8-39
Cleaning the spark arrester ...................... 8-42
V-belt case drain plug............................... 8-44
Adjusting the throttle lever free play ......... 8-45
Valve clearance......................................... 8-46
Adjusting the drive select lever safety
system cable .......................................... 8-46
Brakes....................................................... 8-46
Checking the front and rear brake pads... 8-46
Checking the brake fluid level .................. 8-47
Changing the brake fluid .......................... 8-49
Checking the front and rear brake lever free play .................................................. 8-49
Adjusting the brake pedal free play .......... 8-50
Axle boots................................................. 8-52
Checking and lubricating the cables ........ 8-52
Checking and lubricating the front and rear brake levers ..................................... 8-53
Checking and lubricating the brake pedal ....................................................... 8-54
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3-1
3
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Radiator cap
2. Battery
3. Fuses
4. Air filter case
5. Spark arrester
6. Engine oil dipstick
7. Oil filter cartridge
8. Coolant reservoir
5
1. Rear shock absorber assembly spring preload adjusting ring
2. Rear storage compartment and tool kit
3. Fuel tank cap cover
4. Front shock absorber assembly spring preload adjusting ring
5. Spark plug
6. Brake pedal
7. V-belt case drain plug
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4-3
4
EBU30531Coolant temperature warning light “ ”
This warning light comes on when the engine
overheats. When this occurs during operation,
stop the engine as soon as it is safe to do so and
allow it to cool down for about 10 minutes.
The electrical circuit of the warning light can be
checked by turning the key to “ ” (on). The
warning light should come on for a few seconds,
and then go off.
If the warning light does not come on initially when
the key is turned to “ ” (on), or if the warning
light remains on, have a Yamaha dealer check the
electrical circuit.NOTICEECB00892The engine may overheat if the ATV is over-
loaded. In this case, reduce the load to spec-
ification.
 The engine may also overheat if mud or dirt
has accumulated on the radiator (i.e., after
riding in wet terrain). In this case, see page
8-19 for an explanation on how to access the
radiator. 
Start the engine after making sure that the
warning light is out. Continuous use while
the warning light is on may cause damage to
the engine.
EBU30481Engine trouble warning light “ ”
This warning light comes on or flashes when an
electrical circuit monitoring the engine is not work-
ing correctly. When this occurs, have a Yamaha
dealer check the self-diagnosis system. (See page
4-7 for an explanation of the self-diagnosis de-
vice.)
The electrical circuit of the warning light can be
checked by turning the key to “ ” (on). The
warning light should come on for a few seconds,
and then go off.
If the warning light does not come on initially when
the key is turned to “ ” (on), or if the warning
light remains on, have a Yamaha dealer check the
electrical circuit.
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8-19
8
2. Install the rear carrier by installing the bolts
and tightening them to the specified torques.
3. Install the seat.
EBU28672Removing the radiator grillsThe radiator grills can be removed to access the
radiator for cleaning.
To remove a radiator grill
Remove the quick fastener, pull the radiator grill
outward at the top, and then pull it upward.
To install a radiator grill
Place the radiator grill in its original position, and
then install the quick fastener.
Tightening torques:
Carrier bolt (upper):60 Nm (6.0 m·kgf, 43 ft·lbf)
Carrier bolt (lower): 60 Nm (6.0 m·kgf, 43 ft·lbf)
Carrier bolt (under the fenders): 7 Nm (0.7 m·kgf, 5.1 ft·lbf)1. Radiator grill
2. Quick fastener
21
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8-32
83. If the coolant is at or below the minimum level
mark, remove panel D to access the coolant
reservoir. (See page 8-10.)
4. Remove the coolant reservoir cap, add cool- ant or distilled water to the maximum level
mark, install the reservoir cap, and then install
the panel. NOTICE: If coolant is not avail-
able, use distilled water or soft tap water
instead. Do not use hard water or salt wa-
ter since they are harmful to the engine. If
water has been used instead of coolant,
replace it with coolant as soon as possible,
otherwise the cooling system will not be
protected against frost and corrosion. If
water has been added to the coolant, have
a Yamaha dealer check the antifreeze con-
tent of the coolant as soon as possible,
otherwise the effectiveness of the coolant
will be reduced.
[ECB01012]
TIP The radiator fan is automatically switched on or
off according to the coolant temperature in the
radiator.
 If the engine overheats, see page 8-68 for fur-
ther instructions. 1. Coolant reservoir cap
2. Maximum level mark
3. Minimum level markCoolant reservoir capacity (up to the maxi-
mum level mark):
0.24 L (0.25 US qt, 0.21 Imp.qt)
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8
EBU27769To change the coolant
WARNING
EWB01891Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out under
pressure. Always place a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. 1. Place the ATV on a level surface.
2. Remove panel D. (See page 8-10.)
3. Remove the footboard by removing the boltsand nuts. 4. Place a container under the engine, and then
remove the coolant drain bolt and its gasket.
(Use a trough or a similar object as shown to
prevent coolant from spilling on the engine
guard.)
1. Footboard
2. Bolt and nut
3. Bolt
3
2
2
3
1
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8-34
85. Remove panel B. (See page 8-10.) 6. Remove the radiator cap.
7. Remove the coolant reservoir cap.
8. Disconnect the coolant reservoir hose on the
coolant reservoir side, and then drain the
coolant from the coolant reservoir.
1. Coolant drain bolt
2. Gasket
1. Trough
1
2
1
1. Radiator cap
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8-35
8
9. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
10. Install the coolant drain bolt and its new gas- ket, and then tighten the bolt to the specified
torque.
11. Connect the coolant reservoir hose.
12. Pour the recommended coolant into the radi- ator until it is full. 13. Pour the recommended coolant into the res-
ervoir to the maximum level mark, and then
install the reservoir cap. NOTICE: Mix anti-
freeze with distilled water only. However, if
distilled water is not available, soft water
may be used for refilling. Do not use hard
water or salt water since they are harmful
to the engine.
[ECB00992]
14. Loosen the water pump air bleed bolt, with- out removing it, to allow all of the air to es-
cape from the air bleed bolt hole.
1. Coolant reservoir hoseTightening torque:Coolant drain bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Antifreeze/water mixture ratio: 1:1
Recommended antifreeze: High-quality ethylene glycol antifreeze con-
taining corrosion inhibitors for aluminum
engines
Coolant quantity: Radiator capacity (including all routes):1.99 L (2.10 US qt, 1.75 Imp.qt)
Coolant reservoir capacity (up to the maxi-
mum level mark): 0.24 L (0.25 US qt, 0.21 Imp.qt)
U2LB61E0.book Page 35 Friday, February 21, 2014 3:03 PM