2021 YAMAHA XMAX 300 Spark plug

Table of contentsSafety information ............................ 1-1
Further safe-riding points ............... 1-5
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments ............... 2-3
Smart key system ........................... 3-1
Smart key system ........................... 3-1
Operating range of the smart key system......................................... 3-2
Handling of the smart key and mechanical keys ......................... 3-3
Smart key ....................................... 3-5
Replacing the smart key battery..... 3-6
Main switch .................................... 3-8
Instrument an d control functions ... 4-1
Indicator lights and warning
lights............................................ 4-1
Speedometer .................................. 4-3
Tachometer .................................... 4-3
Multi-function display ..................... 4-4
Handlebar switches ...................... 4-12
Front brake lever .......................... 4-13
Rear brake lever ........................... 4-14
Anti-lock brake system (ABS)....... 4-14
Traction control system ................ 4-15
Fuel tank cap ................................ 4-17
Fuel ............................................... 4-18 Fuel tank overflow hose ................ 4-19
Catalytic converter ........................ 4-20
Storage compartments ................. 4-20
Windshield .................................... 4-22
Handlebar position ....................... 4-24
Adjusting the shock absorber
assemblies ................................. 4-25
Auxiliary DC jack .......................... 4-25
Sidestand ...................................... 4-26
Ignition circuit cut-off system ....... 4-27
For your safety – pre-operation
checks ............................................... 5-1
Operation an d important ri din g
points ................................................. 6-1
Engine break-in ............................... 6-1
Starting the engine .......................... 6-2
Starting off ...................................... 6-3
Acceleration and deceleration ........ 6-3
Braking ............................................ 6-3
Tips for reducing fuel consumption ................................ 6-4
Parking ............................................ 6-4
Perio dic maintenance an d
a d justment ........................................ 7-1
Tool kit ............................................ 7-2
Periodic maintenance charts .......... 7-3
Periodic maintenance chart for the emission control system .............. 7-3 General maintenance and
lubrication chart .......................... 7-4
Removing and installing the panel............................................ 7-8
Checking the spark plug................. 7-9
Canister ........................................ 7-10
Engine oil and oil filter element..... 7-10
Final transmission oil .................... 7-13
Coolant ......................................... 7-14
Air filter and V-belt case air filter elements .................................... 7-15
Checking the throttle grip free play ............................................ 7-19
Valve clearance............................. 7-20
Tires .............................................. 7-20
Cast wheels .................................. 7-22
Checking the front and rear brake
lever free play ............................ 7-22
Checking the front and rear brake pads .......................................... 7-23
Checking the brake fluid level ...... 7-23
Changing the brake fluid .............. 7-25
Checking the V-belt ...................... 7-25
Checking and lubricating the cables ........................................ 7-25
Checking and lubricating the
throttle grip and cable ............... 7-26
Lubricating the front and rear brake levers ............................... 7-26
Checking and lubricating the centerstand and sidestand........ 7-27UBBAE0E0.book Page 1 Thursday, September 24, 2020 3:19 PM

Description
2-1
2
EAU10411
Left view
4
1
5
6
10
8
12
7
9
11
13
2
3
1. Storage compartment A (page 4-20)
2. Tool kit (page 7-2)
3. Grab bar (page 6-3)
4. Air filter element (page 7-15)
5. Shock absorber assembly spring preload adjusting ring (page 4-25)
6. Final transmission oil filler cap (page 7-13)
7. Final transmission oil drain bolt (page 7-13)
8. V-belt case air filter element (page 7-15)9. Engine oil drain bolt (page 7-10)
10.Engine oil filter element (page 7-10)
11.Sidestand (page 4-26)
12.Spark plug (page 7-9)
13.Coolant reservoir (page 7-14)UBBAE0E0.book Page 1 Thursday, September 24, 2020 3:19 PM

Instrument and control functions
4-1
4
EAU4939N
In dicator li ghts an d warnin g
li g hts
EAU11032
Turn si gnal in dicator li ghts “ ”
an d“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
EAU11081
Hi gh beam in dicator li ght “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU88711
Malfunction in dicator li ght
(MIL) “ ”
This light comes on or flashes if a prob-
lem is detected in the engine or other
vehicle control system. If this occurs,
have a Yamaha dealer check the on-
board diagnostic system. The electri-
cal circuit of the warning light can be
checked by vehicle power on. The light
should come on for a few seconds,
and then go off. If the light does not
come on initially when the vehicle pow-
er on, or if the light remains on, have a
Yamaha dealer check the vehicle.NOTICE
ECA26820
If the MIL starts flashin g, re duce en-
g ine spee d to prevent exhaust sys-
tem damag e.
TIPThe engine is sensitively controlled for
the on-board diagnostic system to de-
tect deterioration and malfunction of
the emission control system. Due to
this specification, the MIL may come
on or flash for vehicle modifications,
lack of maintenance, or excessive or
improper use of the vehicle. To prevent
this, observe these precautions.
 Do not attempt to modify the soft-
ware of the engine control unit.
 Do not add any electrical acces-
sories that interfere with engine
control.
 Do not use aftermarket accesso-
ries or parts such as suspension,
spark plugs, injectors, exhaust
system, etc.
 Do not change drivetrain specifi-
cations (chain, sprockets, wheels,
tires, etc.).
 Do not remove or alter the O2 sen-
sor, air induction system, or ex-
haust parts (catalysts or EXUP,
etc.).
 Maintain proper V-belt and drive
belt (if equipped).
1. Left turn signal indicator light “ ”
2. Right turn signal indicator light “ ”
3. High beam indicator light “ ”
4. Anti-lock Brake System (ABS) warning
light “ ”
5. Malfunction indicator light “ ”
6. Traction control system indicator light “ ”
7. Smart key system indicator light “ ”ZAUM1548
1
2
ABS
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Periodic maintenance an d a djustment
7-9
7
EAU19623
Checkin g the spark plugThe 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.
TIPIf 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.
Specifie
d spark plu g:
NGK/LMAR8A-9
1. Spark plug gap
Spark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtenin g torque:
Spark plug: 12.5 N·m (1.25 kgf·m, 9.22 lb·ft)
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Periodic maintenance an d a djustment
7-35
7
EAU86350
Trou bleshootin g chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Try starting the engine.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.Have a Yamaha dealer check the vehicle.
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(s). Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Try starting the engine.
Check the battery lead connections,
and charge the battery if necessary.
The engine does not start.
Check the ignition.
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Scooter care and stora ge
8-4
8 1. Make all necessary repairs and
perform any outstanding mainte-
nance.
2. Follow all instructions in the Care section of this chapter.
3. Fill up the fuel tank, adding fuel stabilizer according to product in-
structions. Run the engine for 5
minutes to distribute treated fuel
through the fuel system.
4. For vehicles equipped with a fuel cock: Turn the fuel cock lever to
the off position.
5. For vehicles with a carburetor: To prevent fuel deposits from build-
ing up, drain the fuel in the carbu-
retor float chamber into a clean
container. Retighten the drain bolt
and pour the fuel back into the fuel
tank.
6. Use a quality engine fogging oil according to product instructions
to protect internal engine compo-
nents from corrosion. If engine
fogging oil is not available, per-
form the following steps for each
cylinder:a. Remove the spark plug cap and spark plug. b. Pour a teaspoonful of engine
oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
WARNING! To prevent d am-
a g e or injury from sparkin g,
make sure to groun d the
spark plu g electro des while
turnin g the en gine over.
[EWA10952]
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
7. Lubricate all control cables, piv- ots, levers and pedals, as well as
the sidestand and centerstand (if
equipped).
8. Check and correct the tire air pressure, and then lift the vehicle
so that all wheels are off the
ground. Otherwise, turn the wheels a little once a month in or-
der to prevent the tires from be-
coming degraded in one spot.
9. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
10. Remove the battery and fully charge it, or attach a maintenance
charger to keep the battery opti-
mally charged. NOTICE: Confirm
that the battery an d its char ger
are compati ble. Do not char ge a
VRLA battery with a convention-
al char ger.
[ECA26330]
TIP If the battery will be removed,
charge it once a month and store
it in a temperate location between
0-30 °C (32-90 °F).
 See page 7-29 for more informa-
tion on charging and storing the
battery.
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11-1
11
IndexAABS warning light ................................... 4-2
Acceleration and deceleration ................ 6-3
Air filter and V-belt case air filter
elements ............................................. 7-15
Anti-lock brake system (ABS) ............... 4-14
Auxiliary DC jack ................................... 4-25
Auxiliary lights ....................................... 7-32BBattery .................................................. 7-29
Brake fluid, changing ............................ 7-25
Brake fluid level, checking .................... 7-23
Brake lever, front .................................. 4-13
Brake lever, rear.................................... 4-14
Brake levers, lubricating ....................... 7-26
Brake/tail light ....................................... 7-32
Braking.................................................... 6-3CCables, checking and lubricating ......... 7-25
Canister................................................. 7-10
Care ........................................................ 8-1
Catalytic converter ................................ 4-20
Centerstand and sidestand, checking
and lubricating .................................... 7-27
Coolant ................................................. 7-14DData recording, vehicle ......................... 10-2
Diagnostic connector............................ 10-2
Dimmer/Pass switch ............................. 4-12EEmergency mode.................................. 7-37
Engine break-in....................................... 6-1
Engine oil and oil filter element ............. 7-10
Engine overheating ............................... 7-36 Engine serial number ............................ 10-1
FFinal transmission oil ............................ 7-13
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............................ 7-32
Fuel ....................................................... 4-18
Fuel consumption, tips for reducing ...... 6-4
Fuel tank cap ........................................ 4-17
Fuel tank overflow hose ....................... 4-19
Fuses, replacing ................................... 7-30HHandlebar position, adjusting .............. 4-24
Handlebar switches .............................. 4-12
Hazard switch....................................... 4-13
Headlights ............................................ 7-31
High beam indicator light ....................... 4-1
Horn switch .......................................... 4-12IIdentification numbers .......................... 10-1
Ignition circuit cut-off system ............... 4-27
Indicator lights and warning lights ......... 4-1KKey, handling of smart and mechanical keys ...................................................... 3-3LLicense plate light bulb, replacing........ 7-33MMain switch ............................................ 3-8
Maintenance and lubrication, periodic ... 7-4
Maintenance, emission control system.................................................. 7-3 Malfunction indicator light (MIL)..............4-1
Matte color, caution ................................8-1
Model label ...........................................10-1
Multi-function display .............................4-4
OOperating range of the smart key
system ..................................................3-2PPanel, removing and installing ................7-8
Parking ....................................................6-4
Part locations ..........................................2-1SSafe-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 ......7-34
Spark plug, checking ..............................7-9
Specifications .........................................9-1
Speedometer ..........................................4-3
Starting off ..............................................6-3
Starting the engine ..................................6-2
Steering, checking ................................7-28
Stop/Run/Start switch ..........................4-13
Storage ...................................................8-3
Storage compartments .........................4-20TTachometer .............................................4-3
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