2012 YAMAHA GRIZZLY 550 ignition

4-7
4Self-diagnosis device
This model is equipped with a self-diagnosis de-
vice for various electrical circuits.
If a problem is detected in any of those circuits, the
multi-function display will indicate an error code.
If the multi-function display indicates an error code,
note the code number, and then have a Yamaha
dealer check the vehicle.
NOTICEECB00811If the multi-function display indicates an error
code, the vehicle should be checked as soon
as possible in order to avoid engine damage.
EBU18061Handlebar switches EBU18080Engine stop switch
“/”
Set this switch to “” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this switch
to stop the engine in an emergency situation. The
engine will not start or run when this switch is set
to “” .
1. Error code display
1. Light switch “/ /OFF”
2. Start switch “”
3. Engine stop switch “/”
4. Override switch “OVERRIDE”
5. Horn switch “”
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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 stop
switch 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.
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8-60
8
The main fuse, the fuel injection system fuse, the
EPS fuse, and the fuse box are located under pan-
el A. (See page 8-10.)
If a fuse is blown, replace it as follows. 1. Turn the key to “” (off) and turn off all elec-
trical circuits.
NOTICEECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.2. Remove the blown fuse, and then install a new fuse of the specified amperage.
WARNING! Always use a fuse of the spec- ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02172]
1. Auxiliary DC jack fuse
2. Four-wheel-drive motor fuse
3. Ignition fuse
4. Radiator fan fuse
5. Signaling system fuse
6. Headlight fuse
7. Spare fuseU1HS60E0.book Page 60 Tuesday, April 26, 2011 7:53 PM

8-61
83. Turn the key to “” (on) and turn on the elec-
trical circuits to check if the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.
EBU27443Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.1. Remove the cover at the rear of the headlight by pulling it off.
2. Remove the headlight bulb cover.
Specified fuses:
Main fuse:40.0 A
Headlight fuse: 10.0 A
Ignition fuse: 10.0 A
Four-wheel-drive motor fuse: 10.0 A
Signaling system fuse: 5.0 A
Auxiliary DC jack fuse: 10.0 A
Radiator fan fuse: 20.0 A
Fuel injection system fuse: 15.0 A
EPS fuse: YFM550FADB 40.0 A
YFM5FGPB 40.0 A
YFM5FGPHB 40.0 A1. Cover at the rear of the headlight
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8-66
8
EBU25740Troubleshooting Although Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the fu-
el, compression, or ignition systems, for example,
can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vital
systems yourself. However, should your ATV re-
quire any repair, take it to a Yamaha dealer, whose
skilled technicians have the necessary tools, expe-
rience, and know-how to service the ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02280Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.U1HS60E0.book Page 66 Tuesday, April 26, 2011 7:53 PM

8-67
8
EBU27693Troubleshooting charts Starting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition. Have a Yamaha dealer
check the ATV.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the ATV.
The engine does not start.
Check the battery.
DryWet
Operate the electric starter.
The engine does not start.
Have a Yamaha dealer
check the ATV.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
U1HS60E0.book Page 67 Tuesday, April 26, 2011 7:53 PM

10-4
10
Minimum:Front:
32.0 kPa (0.320 kgf/cm ², 4.6 psi)
Rear: 27.0 kPa (0.270 kgf/cm ², 4.0 psi)Front wheel:Wheel type:
Panel wheel
Rim size: 12 x 6.0 ATRear wheel:Wheel type:
Panel wheel
Rim size: 12 x 7.5 ATFront brake:Type:
Disc brake
Operation: Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:Disc brake
Operation: Left hand and right foot operation
Specified brake fluid:
DOT 4
Front suspension:Type:Double wishbone
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 180 mm (7.1 in)Rear suspension:Type:
Double wishbone
Spring/shock absorber type: Coil spring/gas-oil damper
Wheel travel: 230 mm (9.1 in)Electrical system:Ignition system:TCI
Charging system: AC magnetoBattery:Model:YTX20L-BS
Voltage, capacity: 12 V, 18.0 AhHeadlight:Bulb type:Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 35.0/35.0 W × 2
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10-5
10
Tail/brake light:12 V, 5.0/21.0 W × 1
Meter lighting: EL (Electroluminescent)
Neutral indicator light:
LED
Reverse indicator light: LED
Coolant temperature warning light: LED
Engine trouble warning light:
LED
EPS warning light: YFM550FADB LED
YFM5FGPB LED
YFM5FGPHB LED
Park indicator light:
LED
On-Command four-wheel-drive/differential gear lock
indicator:
LCD
High-range indicator light: LED
Low-range indicator light: LED
Differential gear lock indicator light:
LEDFuses:Main fuse:40.0 A
Fuel injection system fuse:
15.0 A EPS fuse:
YFM550FADB 40.0 A
YFM5FGPB 40.0 A
YFM5FGPHB 40.0 A
Headlight fuse:
10.0 A
Signaling system fuse: 5.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse:
10.0 A
Four-wheel-drive motor fuse: 10.0 A
Radiator fan fuse: 20.0 A
EBU30400For EUR only
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
U1HS60E0.book Page 5 Tuesday, April 26, 2011 7:53 PM