2009 YAMAHA GRIZZLY 450 cooling

8-31
8

If water has been added to the coolant, have
a Yamaha dealer check the antifreeze con-
tent of the coolant as soon as possible, oth-
erwise the effectiveness of the coolant willbe reduced.
14. Install the radiator cap, start the engine, let it
idle for several minutes, and then turn it off.
15. Remove the radiator cap to check the coolant
level in the radiator. If it is low, add sufficient
coolant until it reaches the top of the radiator,
and then install the radiator cap.
16. Start the engine, and then check for coolant
leakage.TIPIf any leakage is found, have a Yamaha dealercheck the cooling system.
17. Install the panels and the front carrier.EBU23645Cleaning the air filter element The air filter element should be cleaned at the in-
tervals specified in the periodic maintenance and
lubrication chart. Clean or, if necessary, replace
the air filter element more frequently if you are
riding in unusually wet or dusty areas.
TIPThere is a check hose at the bottom of the air filter
case. If dust or water collects in this hose, empty
the hose and clean the air filter element and air fil-ter case.
1. Place the ATV on a level surface.
2. Remove the seat. (See page 4-18.)
3. Remove the air filter case cover by unhooking
the air filter case cover holders.1. Air filter case check hose
U37S60E0.book Page 31 Thursday, June 5, 2008 6:51 PM

8-35
83. 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
bolt holes.
5. Install the bolts and tighten them to the speci-
fied torque.
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 totouching exhaust components.EBU23920V-belt cooling duct check hose If dust or water collects in the V-belt cooling duct
check hose, remove the hose and clean it.
1. Tailpipe
2. Spark arresterTightening torque:
Tailpipe bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
1. V-belt cooling duct check hose (left front side of ATV)
U37S60E0.book Page 35 Thursday, June 5, 2008 6:51 PM

8-62
8 Engine 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.
U37S60E0.book Page 62 Thursday, June 5, 2008 6:51 PM

10-2
10
Engine oil:Type:
SAE 5W-30 or SAE 10W-30 or SAE 10W-40 or SAE
15W-40 or SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO standard MA
Engine oil quantity:
Without oil filter cartridge replacement:
2.30 L (2.43 US qt, 2.02 Imp.qt)
With oil filter cartridge replacement:
2.40 L (2.54 US qt, 2.11 Imp.qt)Final gear oil:Type:
Yamaha Friction Modified Shaft Drive Gear Oil (EUR)
Yamaha Friction Modified Shaft Drive Gear Oil (Part No.:
ACC-SHAFT-LU-00) (AUS)(NZL)Quantity:
0.50 L (0.53 US qt, 0.44 Imp.qt)
Differential gear oil:Type:
Yamaha Friction Modified Shaft Drive Gear Oil (Part No.:
ACC-SHAFT-LU-00) or SAE 80 API GL-4 Hypoid gear oil
(AUS)(NZL)
Yamaha Friction Modified Shaft Drive Gear Oil or SAE 80
API GL-4 Hypoid gear oil (EUR)
Quantity:
0.23 L (0.24 US qt, 0.20 Imp.qt)Cooling system:Coolant reservoir capacity (up to the maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator capacity (including all routes):
1.30 L (1.37 US qt, 1.14 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only (EUR)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
15.0 L (3.96 US gal, 3.30 Imp.gal)
Fuel reserve amount:
4.5 L (1.19 US gal, 0.99 Imp.gal)Carburetor:Manufacturer:
MIKUNI
-20 -10 0
1020 304050 ˚C
SAE 15W-40
SAE 20W-40SAE 20W-50
SAE 10W-40
SAE 5W-30
SAE 10W-30
U37S60E0.book Page 2 Thursday, June 5, 2008 6:51 PM

V-belt cooling duct check hose .................................... 8-35
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-49
Wheel, installing ........................................................... 8-58
Wheel, removing .......................................................... 8-58
U37S60E0.book Page 3 Thursday, June 5, 2008 6:51 PM