engine overheat YAMAHA YXZ1000R 2021 Owners Manual

5-4
5
and/or turn the steering wheel back and
forth to help the differential to lock or un-
lock. EBU34932Shift light
This light can be set to come on and go off at
the desired engine speeds and is used to in-
form the driver when it is time to upshift.
The electrical circuit of the shift light can be
checked by turning the key to “ ” (on). If the
light does not come on initially when the key
is turned to “ ” (on), or if the light remains
on, have a Yamaha dealer check the electrical
circuit.TIPSee page 5-13 for an explanation of how to
set the shift light.
EBU35283Coolant temperature warning light “ ”
This warning light comes on when the coolant
temperature, and therefore the engine, is out-
side its normal operating temperature range.
The warning light comes on in blue to inform
the driver that the vehicle should be warmed
up. After the engine is started, warm it up until
the warning light goes off.
The vehicle can be operated normally when
the warning light is off.
The warning light comes on in red when the
engine is overheating. If the red light comes
on, stop the vehicle as soon as it is safe to do
so and allow the engine to idle for about 10
minutes. If the warning light does not go off,
stop the engine and allow it to cool. (See page
9-69.)TIPIf you continue to driv e the vehicle while the
engine is overheating, a buzzer will sound.
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The coolant temperature warning light can
be checked by turning the key to “ ” (on).
The warning light should come on in purple
briefly (which confirms that both the blue
and red indicators are okay) and then go
off. If the warning light does not come on at
all, comes on in red or blue, or if the warning
light remains on, have a Yamaha dealer
check the vehicle. NOTICEECB02040The engine may overheat if the vehicle is
overloaded. If this happens, reduce the
load to specification.
 After restarting, make sure that the
warning light is out. Continuous use
while this warning light is on may cause
damage to the engine.
EBU31342Engine trouble warning light “ ”
This warning light comes on or flashes if a
problem is detected in the electrical circuit
monitoring the engine. When this occurs, the
display will indicate an error code (see page
5-15). Have a Yamaha dealer check the self-
diagnostic system.
The electrical circuit of the warning light can
be checked by turning the key to “ ” (on). If
the warning light does not come on initially
when the key is turned to “ ” (on), or if the
warning light remains on, have a Yamaha
dealer check the vehicle.EBU33041Electric Power Steering warning light
“EPS”
This warning light comes on when the key is
turned to “ ” (on), and then goes off once
the engine is started. If the warning light re-
mains on or comes on after the engine is
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9
Additionally, the fuel injection system
would be affected, resulting in poor engine
performance and possible overheating. Clean the primary air filter as follows. 1. Remove the air filter case cover by turn- ing the air filter case cover lock counter-
clockwise.TIPMake sure that the match mark on the cover
lock is aligned with the open match mark on
the air filter case cover.
2. Remove the foam air filter.1. Air filter case cover lock
2. Air filter case cover
3. Match mark
1
2
3
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9
Engine overheating
Wait for the engine to cool before removing the radiator cap. WARNING! If the engine is not
cool when removing the radiator cap, hot fluid and steam could blow out under pressure
and burn you.
[EWB03460]
Place a thick rag over the cap and remove the cap slowly to allow any re-
maining pressure to escape.
TIP Tap water can be used in an emergency. Ch ange to the recommended coolant as soon as
possible.
 The engine will tend to overheat if the radiator is caked with mud, or if air was not properly bled
from the cooling system. Wait until the
engine has cooled.
Check the coolant level in the
coolant reservoir and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See TIP.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and/or repair the cooling system.
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