2012 YAMAHA GRIZZLY 450 Owners Manual

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8
EBU28391TIP
Some maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.23 Cooling system
Check coolant level and ATV for coolant leakage,
and correct if necessary. √√√√√
 Replace coolant. Every 2 years
24 *Moving parts and
cables 
Lubricate. √√√√
25 *Drive select lever
safety system cable 
Check operation and adjust or replace if neces-
sary. √√√
26 *Throttle lever 
Check operation.
 Check throttle lever free play, and adjust if neces-
sary.
 Lubricate cable and lever housing. √√√√√
27 *Front and rear brake
switches 
Check operation and correct if necessary. √√√√√
28 *Lights and switches 
Check operation and correct if necessary.
 Adjust headlight beams. √√√√√
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 320U1CT61E0.book Page 8 Wednesday, April 20, 2011 6:36 PM

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8

Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
 Every two years replace the internal components of the brake master cylinder and calipers, and change
the brake fluid.
 Replace the brake hoses every four years and if cracked or damaged.
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EBU23090Removing and installing panels The panels shown need to be removed to perform
some of the maintenance jobs described in this
chapter. Refer to this section each time a panel
needs to be removed and installed.
EBU30261Panels A and C
To remove a panel1. Remove the seat. (See page 4-18.)
2. Pull outward on the areas shown, and thenpull upward as shown.
1. Panel A
1. Panel B
2. Panel C
3. Panel D
4. Panel E
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8To install a panel
1. Place the panel in its original position. 2. Install the seat.
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Panel B
To remove the panel
1. Remove the carrier top bolts.
2. Remove the carrier bolts under the fenders,
and then take the carrier off. 3. Remove the quick fastener screws, and then
pull the panel upward to remove it.1. Carrier bolt (top)
1
1
1
1. Carrier bolt (under the fenders)
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8To install the panel
1. Place the panel in the original position, and
then install the quick fastener screws.
2. Place the carrier in the original position, and then install the carrier bolts under the fenders.
3. Install the carrier top bolts, and then tighten all bolts to the specified torques. Panel D
To remove the panel
Remove the bolts, and then take the panel off.
1. Quick fastener screw
2. Panel B
1
2
Tightening torques:Carrier bolt (top):34 Nm (3.4 m ·kgf, 25 ft· lbf)
Carrier bolt (under fenders): 7 Nm (0.7 m ·kgf, 5.1 ft· lbf)1. Panel D
2. Bolt
1
2
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To install the panel
Place the panel in the original position and install
the bolts.
Panel E
To remove the panelPull outward on the areas shown.
To install the panelPlace the panel in its original position.
EBU23223Checking the spark plug The spark plug is an important engine component,
which is easy to check. Since heat and deposits
will cause any spark plug to slowly erode, the spark
plug should be removed and checked in accor-
dance with the periodic maintenance and lubrica-
tion chart. In addition, the condition of the spark
plug can reveal the condition of the engine.
To remove the spark plug
1. Remove panel A. (See page 8-10.)
2. Remove the spark plug cap.
1. Panel E
1
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83. Remove the spark plug as shown, with the
spark plug wrench included in the owner ’s tool
kit. To check the spark plug
1. Check that the porcelain insulator around the center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.
1. Spark plug cap
1. Spark plug wrench
U1CT61E0.book Page 15 Wednesday, April 20, 2011 6:36 PM