2013 YAMAHA GRIZZLY 550 engine coolant

6-1
6
EBU19881
OPERATION
EBU19901Read the Owner’s Manual carefully before riding
the ATV. If there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWB00631Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury.EBU30560Starting the engine NOTICEECB00150See the “Engine break-in” section on page 6-4
prior to operating the engine for the first time.1. Turn the key to “ ” (on) and the engine stopswitch to “ ”.
The following warning lights should come on
for a few seconds, then go off.
●Coolant temperature warning light
●Engine trouble warning light
The EPS warning light should come on, then
go off when the engine is started. (for EPS
model)
NOTICEECB00824If a warning light does not go off, see page 4-2
for the corresponding warning light circuit
check. To avoid possible damage, do not oper-
ate the ATV if a warning light stays on.2. Apply the brake pedal, and then shift the drive select lever into the neutral or park position.
The corresponding indicator light should
come on. If the indicator light does not come
on, have a Yamaha dealer check the electrical
circuit.TIPThis model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions:●The drive select lever is in the neutral or park po-
sition.
U1HS61E0.book Page 1 Wednesday, May 23, 2012 5:24 PM

8-32
88. 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.EBU27126To check the coolant level1. 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.TIPThe coolant should be between the minimum and
maximum level marks.
3. If the coolant is at or below the minimum levelmark, 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, re-
place it with coolant as soon as possible,
otherwise the cooling system will not be1. Maximum level mark
2. Minimum level mark
U1HS61E0.book Page 32 Wednesday, May 23, 2012 5:24 PM

8-33
8
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.
[ECB01011]
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.EBU27767To change the coolant
WARNING
EWB01890Wait 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 bolts
and nuts.
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)
U1HS61E0.book Page 33 Wednesday, May 23, 2012 5:24 PM

8-34
84. 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.)
5. Remove panel B. (See page 8-10.)
1. Footboard
2. Bolt and nut
3. Bolt
3
2
2
3
1
1. Coolant drain bolt
2. Gasket
1. Trough
1
2
1
U1HS61E0.book Page 34 Wednesday, May 23, 2012 5:24 PM

8-36
813. Pour the recommended coolant into the reser-
voir to the maximum level mark, and then in-
stall the reservoir cap. NOTICE: Mix
antifreeze with distilled water only. Howev-
er, 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.
[ECB00991]
14. Loosen the water pump air bleed bolt, without removing it, to allow all of the air to escape
from the air bleed bolt hole. 15. When coolant begins to flow out of the bolt
hole, tighten the water pump air bleed bolt to
the specified torque.
16. Remove panel E. (See page 8-10.)
17. Loosen the clamp screw, and then remove the V-belt cooling duct.
Antifreeze/water mixture ratio:
1:1
Recommended antifreeze: High-quality ethylene glycol antifreeze con-
taining corrosion inhibitors for aluminum en-
gines
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)
1. Water pump air bleed boltTightening torque:Water pump air bleed bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
1
U1HS61E0.book Page 36 Wednesday, May 23, 2012 5:24 PM

8-37
8
18. Loosen the cylinder head air bleed bolt, with-
out removing it, to allow all of the air to escape
from the air bleed bolt hole. 19. When coolant begins to flow out of the bolt
hole, tighten the cylinder head air bleed bolt to
the specified torque.
20. Start the engine and let it idle for ten minutes.
21. Rev the engine five times.
22. Pour the recommended coolant into the radia- tor until it is full.
1. V-belt cooling duct
2. Clamp screw
1. Cylinder head air bleed boltTightening torque:Cylinder head air bleed bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
U1HS61E0.book Page 37 Wednesday, May 23, 2012 5:24 PM

8-38
823. Stop the engine and allow it to cool. If the cool-
ant level has dropped after the engine has
cooled, add sufficient coolant until it reaches
the top of the radiator, and then install the ra-
diator cap.
24. Start the engine, and then check for coolant leakage.
TIPIf any leakage is found, have a Yamaha dealer
check the cooling system.25. Install the V-belt cooling duct, and then tightenthe clamp screw.
26. Install the footboard by installing the bolts and nuts, and then tighten them to the specified
torques.
TIPTighten footboard bolts B in the order shown.1. Footboard nut
2. Footboard bolt A
3. Footboard bolt B
3
1
2
1
U1HS61E0.book Page 38 Wednesday, May 23, 2012 5:24 PM

8-68
8Engine overheating
WARNING
EWB02290Wait 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 put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the rec-
ommended coolant as soon as possible.Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
U1HS61E0.book Page 68 Wednesday, May 23, 2012 5:24 PM