2004 YAMAHA WOLVERINE 450 maintenance

8-15 1. Panel A 2. Panel B
1. Cache A 2. Cache B
1. Panel A 2. Panel B
1. Panel C 2. Panel D
3. Panel E 4. Panel F
1. Cache C 2. Cache D
3. Cache E 4. Cache F
1. Panel C 2. Panel D
3. Panel E 4. Panel F
EBU00614
Panel removal and installation
The panels illustrated need to be removed to per-
form some of the maintenance described in this
chapter.
Refer to this section each time a panel has to be
removed or reinstalled.
U5ND61.book Page 15 Thursday, June 5, 2003 7:02 PM

8-31 1. Engine oil filler cap
1. Bouchon de remplissage d’huile de moteur
1. Tapa de relleno de aceite de motor
1. Maximum level mark 2. Minimum level mark
1. Repère de niveau maximum 2. Repère de niveau minimum
1. Marca de nivel máximo 2. Marca de nivel mínimo
EBU10991
Engine oil and oil filter cartridge
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter cartridge replaced at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the engine oil level
1. Remove panel F. (See page 8-29 for panel
removal and installation procedures.)
2. Place the ATV on a level surface.
3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Wait a few minutes until the oil settles.
5. Remove the engine oil filler cap and wipe off
the dipstick with a clean rag.
6. Insert the dipstick in the oil filler hole (without
screwing it in), and then remove it again to
check the oil level.NOTE:_ The engine oil should be between the minimum
and maximum level marks. _
U5ND61.book Page 31 Thursday, June 5, 2003 7:02 PM

8-81
EBU00296
Carburetor adjustment
The carburetor is a vital part of the engine and re-
quires very sophisticated adjustment. Most adjust-
ing should be left to a Yamaha dealer who has the
professional knowledge and experience to do so.
However, the idling speed may be performed by
the owner as a part of the usual maintenance rou-
tine.CAUTION:
The carburetor was set at the Yamaha factory
after many tests. If the settings are disturbed
by someone without sufficient technical
knowledge, poor engine performance and
damage may result.
U5ND61.book Page 81 Thursday, June 5, 2003 7:02 PM

8-97
EBU01186
Brake fluid replacement
Complete fluid replacement should be done only
by trained Yamaha service personnel. Have a
Yamaha dealer replace the following components
during periodic maintenance or when they are
damaged or leaking.

Replace the oil seals every two years.


Replace the brake hoses every four years.
U5ND61.book Page 97 Thursday, June 5, 2003 7:02 PM

8-119
EBU00385
Battery maintenance
1. When the machine is not used for a month or
longer, remove the battery and store it in a
cool, dark place. Completely recharge the
battery before reinstallation.CAUTION:
A special battery charger (constant voltage/
ampere or constant voltage) is required for re-
charging a sealed-type battery. Using a con-
ventional battery charger may shorten the
battery life.2. Always make sure the connections are cor-
rect when putting the battery back in the ma-
chine.
U5ND61.book Page 119 Thursday, June 5, 2003 7:02 PM