2018 YAMAHA XMAX 300 check engine light

Periodic maintenance and adjustment
7-8
7
EAU19623
Checking the spark plug
The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
it should be removed and checked in
accordance with the periodic mainte-
nance and lubrication chart. In addi-
tion, the condition of the spark plug
can reveal the condition of the engine.
The porcelain insulator around the
center electrode of the spark plug
should be a medium-to-light tan (the
ideal color when the vehicle is ridden
normally). If the spark plug shows a
distinctly different color, the engine
could be operating improperly. Do not
attempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
Before installing a spark plug, the
spark plug gap should be measured
with a wire thickness gauge and, if
necessary, adjusted to specification.Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the spark
plug threads.
TIP
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4…
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.
Specified spark plug:
NGK/LMAR8A-9
1. Spark plug gap
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
12.5 N·m (1.25 kgf·m, 9.22 lb·ft)
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Periodic maintenance and adjustment
7-9
7
EAU36112
Canister
This model is equipped with a canister
to prevent the discharging of fuel vapor
into the atmosphere. Before operating
this vehicle, make sure to check the
following:
Check each hose connection.
Check each hose and canister for
cracks or damage. Replace if
damaged.
Make sure that the canister
breather is not blocked, and if
necessary, clean it.
EAUM3980
Engine oil and oil filter ele-
ment
The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart.
To check the engine oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, and then check the oil level
through the check window locat-
ed at the bottom-right side of the
crankcase.
TIP
The engine oil should be between the
minimum and maximum level marks.
1. Canister
2. Canister breather hose
2
1
ZAUM1458
1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
3
1
2
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Periodic maintenance and adjustment
7-13
7
EAU20071
Coolant
The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU78580To check the coolant level
1. Place the vehicle on the center-
stand.
TIP
The coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.
2. Check the coolant level through
the check window.
TIP
The coolant should be between the
minimum and maximum level marks.
3. If the coolant is at or below the
minimum level mark, remove the
left floorboard mat by pulling it up.
4. Remove the coolant reservoir cov-
er.
5. Remove the coolant reservoir cap,
add coolant to the maximum level
mark, and then install the reservoir
cap. WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is hot.
[EWA15162] NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
1. Coolant level check window
2. Maximum level mark
3. Minimum level mark
1
2
3
1. Floorboard mat
1. Coolant reservoir cover
1
1
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Periodic maintenance and adjustment
7-35
7
EAU60701
Troubleshooting
Although Yamaha vehicles receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, 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 your-
self. However, should your vehicle re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the vehicle prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or prop-
erty damage.
EAU76551Smart key system troubleshooting
Please check the following items when
the smart key system does not work.
Is the smart key turned on? (See
page 3-5.)
Is the smart key battery dis-
charged? (See page 3-6.)Is the smart key battery installed
correctly? (See page 3-6.)
Is the smart key being used in a lo-
cation with strong radio waves or
other electromagnetic noise? (See
page 3-1.)
Are you using the smart key that is
registered to the vehicle?
Is the vehicle battery discharged?
When the vehicle battery is dis-
charged, the smart key system will
not operate. Please have the vehi-
cle battery charged or replaced.
(See page 7-29.)
If the smart key system does not work
after checking the above items, have a
Yamaha dealer check the smart key
system.
TIP
See Emergency mode on page 7-38
for information on starting the engine
without the smart key.
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11-1
11
Index
A
ABS ...................................................... 4-14
ABS warning light ................................... 4-1
Acceleration and deceleration................ 6-3
Air filter and V-belt case air filter
elements ............................................ 7-14
Auxiliary DC jack .................................. 4-29
Auxiliary lights ...................................... 7-32
B
Battery .................................................. 7-29
Brake fluid, changing ........................... 7-24
Brake fluid level, checking ................... 7-23
Brake lever, front .................................. 4-13
Brake lever, rear ................................... 4-14
Brake levers, lubricating ....................... 7-26
Brake/tail light ...................................... 7-33
Braking ................................................... 6-4
C
Cables, checking and lubricating ......... 7-25
Canister .................................................. 7-9
Care ........................................................ 8-1
Catalytic converters ............................. 4-20
Centerstand and sidestand, checking
and lubricating ................................... 7-27
Coolant ................................................. 7-13
D
Data recording, vehicle ........................ 10-2
Diagnostic connectors ......................... 10-2
Dimmer/Pass switch ............................ 4-12
E
Emergency mode ................................. 7-38
Engine break-in ...................................... 6-5
Engine oil and oil filter element .............. 7-9
Engine serial number............................ 10-1
Engine trouble warning light................... 4-1
F
Final transmission oil ............................ 7-12
Front and rear brake lever free play,
checking............................................. 7-22
Front and rear brake pads, checking ... 7-23
Front fork, checking ............................. 7-27
Front turn signal light ........................... 7-33
Fuel....................................................... 4-18
Fuel consumption, tips for reducing ...... 6-5
Fuel tank cap........................................ 4-17
Fuel tank overflow hose ....................... 4-19
Fuses, replacing ................................... 7-30
H
Handlebar position, adjusting .............. 4-25
Handlebar switches.............................. 4-12Hazard switch ....................................... 4-12
Headlights ............................................. 7-32
High beam indicator light........................ 4-1
Horn switch........................................... 4-12
I
Identification numbers .......................... 10-1
Ignition circuit cut-off system ............... 4-27
Indicator lights and warning lights .......... 4-1
K
Key, handling of smart and mechanical
keys ...................................................... 3-3
L
License plate light bulb, replacing ........ 7-34
M
Main switch............................................. 3-8
Maintenance and lubrication, periodic ... 7-4
Maintenance, emission control
system .................................................. 7-3
Matte color, caution ................................ 8-1
Model label ........................................... 10-1
Multi-function display ............................. 4-3
O
Operating range of the smart key
system .................................................. 3-2
P
Panel, removing and installing ................ 7-7
Parking .................................................... 6-6
Part locations .......................................... 2-1
S
Safe-riding points ................................... 1-5
Safety information................................... 1-1
Shock absorber assemblies,
adjusting ............................................. 4-25
Sidestand .............................................. 4-26
Smart key ................................................ 3-5
Smart key battery, replacing................... 3-6
Smart key system ................................... 3-1
Smart key system indicator light ............ 4-2
Smart key system, troubleshooting ...... 7-35
Spark plug, checking .............................. 7-8
Specifications ......................................... 9-1
Speedometer .......................................... 4-2
Starting off .............................................. 6-3
Starting the engine.................................. 6-2
Steering, checking ................................ 7-28
Stop/Run/Start switch .......................... 4-12
Storage ................................................... 8-4
Storage compartments ......................... 4-20
T
Tachometer............................................. 4-3
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