2015 YAMAHA GRIZZLY 450 maintenance

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EBU21745Periodic maintenance chart for the emission control systemTIPFor ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
 For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should still be followed.
 Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills. 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 80 160 160 320
1 *Fuel line • Check fuel hoses for cracks or other damage, and
replace if necessary. √√√
2Spark plug • Check condition and clean, regap, or replace if
necessary. √√√√√
3 *Va l v e s • Check valve clearance and adjust if necessary. √ √√√
4 *Carburetor • Check starter (choke) operation and correct if
necessary.
• Check engine idling speed and adjust if neces- sary. √√√√
5 *Crankcase breath-
er system • Check breather hose for cracks or other damage,
and replace if necessary. √√√
U2LC61E0.book Page 3 Wednesday, February 26, 2014 3:56 PM

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6*Exhaust system • Check for leakage and replace gasket(s) if neces-
sary.
• Check for looseness and tighten all screw clamps and joints if necessary. √√√
7 Spark arrester • Clean. √√√
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 320U2LC61E0.book Page 4 Wednesday, February 26, 2014 3:56 PM

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EBU21868General maintenance and lubrication chartTIPFor ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
 For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should still be followed.
 Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills. 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 80 160 160 320
1 Air filter element • Clean and replace if necessary. Every 20–40 hours (more often in wet or
dusty areas)
2 *Front brake • Check operation and correct if necessary.
• Check fluid level and ATV for fluid leakage, and
correct if necessary. √√√√√
• Replace brake pads. Whenever worn to the limit
3 *Rear brake • Check operation and correct if necessary.
• Check brake lever and pedal free play, and adjust
if necessary. √√√√√
• Check brake friction plate wear and replace if necessary. √ √√√
U2LC61E0.book Page 5 Wednesday, February 26, 2014 3:56 PM

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4*Brake hoses • Check for cracks or other damage, and replace if
necessary. √√√√
• Replace. Every 4 years
5 *Brake fluid • Replace. Every 2 years
6 *Wheels • Check runout and for damage, and replace if nec-
essary. √ √√√
7 *Tires • Check tread depth and for damage, and replace if
necessary.
• Check air pressure and balance, and correct if necessary. √ √√√
8 *Wheel hub bearings • Check for looseness or damage, and replace if
necessary. √ √√√
9 *V- b e l t • Check for wear, cracks or other damage, and re-
place if necessary. √ √√√
10 *Drive shaft univer-
sal joint
• Lubricate with lithium-soap-based grease.
√√√
11 *Chassis fasteners • Make sure that all nuts, bolts, and screws are
properly tightened. √√√√√
12 *Shock absorber as-
semblies • Check operation and correct if necessary.
• Check for oil leakage and replace if necessary.
√√√
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 320U2LC61E0.book Page 6 Wednesday, February 26, 2014 3:56 PM

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13*Stabilizer bushes • Check for cracks or other damage, and replace if
necessary. √√√
14 *Rear knuckle pivots • Lubricate with lithium-soap-based grease. √√√
15 *Steering shaft • Lubricate with lithium-soap-based grease. √√√
16 *Steering system • Check operation and repair or replace if dam-
aged.
• Check toe-in and adjust if necessary. √√√√√
17 *Engine mount • Check for cracks or other damage, and replace if
necessary. √√√
18 *Axle boots • Check for cracks or other damage, and replace if
necessary. √√√√√
19 Engine oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √ √√√
20 Engine oil filter car-
tridge
• Replace.
√√√
21 *Engine oil strainer • Clean. √√√
22 Differential gear oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √√
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 320U2LC61E0.book Page 7 Wednesday, February 26, 2014 3:56 PM

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23 Final gear oil• Change.
• Check ATV for oil leakage, and correct if neces-
sary. √ √√√
24 Cooling system • Check coolant level and ATV for coolant leakage,
and correct if necessary. √√√√√
• Replace coolant. Every 2 years
25 *Moving parts and
cables • Lubricate.
√√√√
26 *Drive select lever
safety system cable • Check operation and adjust or replace if neces-
sary. √√√
27 *Throttle lever • Check operation.
• Check throttle lever free play, and adjust if neces-
sary.
• Lubricate cable and lever housing. √√√√√
28 *Front and rear
brake switches • Check operation and correct if necessary.
√√√√√
29 *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 320U2LC61E0.book Page 8 Wednesday, February 26, 2014 3:56 PM

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EBU28392TIPSome maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.
 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. U2LC61E0.book Page 9 Wednesday, February 26, 2014 3:56 PM

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EBU23091Removing and installing panelsThe 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.
EBU30262Panels A and C
To remove a panel1. Remove the seat. (See page 4-19.)
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
U2LC61E0.book Page 10 Wednesday, February 26, 2014 3:56 PM