2020 YAMAHA XMAX 400 engine overheat

Instrument and control functions
4-5
4 When approximately 2.4 L (0.63
US gal, 0.53 Imp.gal) of fuel re-
mains in the fuel tank, the last seg-
ment of the fuel meter will start
flashing. The display will automat-
ically change to the fuel reserve
tripmeter “F Trip” and start count-
ing the distance traveled from that
point.
Coolant temperature meter
The coolant temperature meter indi-
cates the temperature of the coolant.
If the top segment flashes, stop the ve-
hicle, then stop the engine, and let the
engine cool. (See page 7-37.)
NOTICE
ECA10022
Do not continue to operate the en-
gine if it is overheating.
TIP
If a problem is detected in the
coolant temperature meter, all
segments will flash repeatedly. If
this occurs, have a Yamaha dealer
check the vehicle as soon as pos-
sible.
The coolant temperature varies
with changes in the weather and
engine load.
Tripmeter display
The tripmeter display is equipped with
the following:
odometer
tripmeter
time tripmeter
fuel reserve tripmeter
oil change tripmeter
V-belt replacement tripmeter
Push the “TRIP” switch to change the
display between the odometer “Odo”,
tripmeter “Trip”, time tripmeter “Trip
Time”, oil change tripmeter “Oil Trip”,
and V-belt replacement tripmeter “V-
Belt Trip” in the following order:
Odo → Trip → Trip Time → Oil Trip →
V-Belt Trip → Odo
TIP
When approximately 2.4 L (0.63 US
gal, 0.53 Imp.gal) of fuel remains in the
fuel tank, the last segment of the fuel
meter will start flashing. The display
will automatically change to the fuel re-

counting the distance traveled from
that point.
1. Coolant temperature meter
ZAUM1484
1
1. Tripmeter display
ZAUM1485
1
UBL1E0E0.book Page 5 Thursday, May 11, 2017 8:51 AM

Operation and important riding points
6-5
6
EAU16821
Tips for reducing fuel con-
sumption
Fuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
Avoid high engine speeds during
acceleration.
Avoid high engine speeds with no
load on the engine.
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU16842
Engine break-in
There is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAU34323
0–1000 km (0–600 mi)
Avoid prolonged operation above 4000
r/min. NOTICE: After 1000 km (600
mi) of operation, be sure to replace
the engine oil, final transmission oil
and the oil filter element.
[ECA12932]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 6000
r/min.
1600 km (1000 mi) and beyond
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
Keep the engine speed out of
the tachometer red zone.
If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the vehi-
cle.
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Periodic maintenance and adjustment
7-37
7 Engine overheating
WARNING
EWAT1041
Do not remove the radiator cap when the engine and radiator are hot.
Scalding hot fluid and steam may be blown out under pressure, which
could cause serious injury. Be sure to wait until the engine has cooled.
Place a thick rag, like a towel, over the radiator cap, and then slowly ro-
tate the cap counterclockwise to the detent to allow any residual pres-
sure to escape. When the hissing sound has stopped, press down on the
cap while turning it counterclockwise, and then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided
that it is changed to the recommended coolant as soon as possible.
Wait until the engine
has cooled.
Check the coolant
level in the reservoir
and radiator.Add coolant.
(See TIP.)
The coolant level is
OK.
There is no leakage.
There is leakage.
The coolant level is
low.
Check the cooling
system for leakage.
Have a Yamaha
dealer check and
repair the cooling
system.
Start the engine. If the engine overheats again,
have a Yamaha dealer check and repair the cooling
system.
UBL1E0E0.book Page 37 Thursday, May 11, 2017 8:51 AM