2021 YAMAHA TRICITY 300 check engine light

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 ....................................... 3-4
Replacing the smart key battery..... 3-6
Main switch .................................... 3-7
Stan din g assist ................................. 4-1
Standing assist ............................... 4-1
Instrument an d control functions ... 5-1
Indicator lights and warning
lights............................................ 5-1
Multi-function meter unit ................ 5-3
Handlebar switches ........................ 5-9
Front brake lever .......................... 5-10
Brake pedal .................................. 5-11
Rear brake lever ........................... 5-11
Parking brake lever ....................... 5-12
ABS .............................................. 5-13 Traction control system ................ 5-14
Fuel tank cap ................................ 5-15
Fuel ............................................... 5-16
Fuel tank overflow hose ................ 5-18
Catalytic converter ........................ 5-18
Storage compartment ................... 5-18
Adjusting the shock absorber
assemblies ................................. 5-20
Auxiliary DC jack ........................... 5-20
Sidestand ...................................... 5-21
Ignition circuit cut-off system ....... 5-22
For your safety – pre-operation
checks ............................................... 6-1
Operation an d important ri din g
points ................................................. 7-1
Engine break-in ............................... 7-1
Starting the engine .......................... 7-2
Starting off ...................................... 7-3
Acceleration and deceleration ........ 7-3
Braking ............................................ 7-3
Tips for reducing fuel consumption ................................ 7-4
Parking ............................................ 7-4
Perio dic maintenance an d
a d justment ........................................ 8-1
Tool kit ............................................ 8-2
Periodic maintenance charts .......... 8-3 Periodic maintenance chart for the
emission control system ............. 8-3
General maintenance and lubrication chart .......................... 8-4
Removing and installing the
panel............................................ 8-9
Checking the spark plug............... 8-10
Canister ........................................ 8-11
Engine oil and oil filter element..... 8-12
Why Yamalube.............................. 8-14
Final transmission oil .................... 8-14
Coolant ......................................... 8-15
Air filter and V-belt case air filter elements .................................... 8-17
Checking the throttle grip free play ............................................ 8-21
Valve clearance............................. 8-21
Tires .............................................. 8-22
Cast wheels .................................. 8-23
Checking the front brake lever
free play..................................... 8-24
Checking the rear brake lever free play..................................... 8-24
Checking the parking brake ......... 8-25
Checking the front and rear brake pads ................................ 8-25
Checking the brake fluid level ...... 8-26
Changing the brake fluid .............. 8-27
Checking the V-belt ...................... 8-27
Checking and lubricating the cables ........................................ 8-28UBEDE0E0.book Page 1 Thursday, October 1, 2020 1:04 PM

Instrument and control functions
5-1
5
EAU4939P
In dicator li ghts an d warnin g
li g hts
EAU88900
Turn si gnal in dicator li ghts “ ”
an d“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
EAU88910
Hi gh beam in dicator li ght “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU89121
Parkin g b rake in dicator li ght “ ”
This indicator light comes on when the
parking brake is applied.
EAU88880
Coolant temperature warnin g
li g ht “ ”
This warning light comes on when the
engine is overheating. If this occurs,
stop the engine immediately and allow
the engine to cool. (See page 8-39.)
For vehicles with a radiator fan, the ra-
diator fan(s) automatically switch on or
off according to the coolant tempera-
ture.
TIPWhen the vehicle is turned on, the light
will come on for a few seconds, and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check the vehicle.NOTICE
ECA10022
Do not continue to operate the en-
g ine if it is overheatin g.
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.
1. ABS warning light “ ”
2. Smart key system indicator light “ ”
3. Left turn signal indicator light “ ”
4. Coolant temperature warning light “ ”
5. Parking brake indicator light “ ”
6. Standing assist indicator light “ ”
7. High beam indicator light “ ”
8. Standing assist warning light “ ”
9. Right turn signal indicator light “ ”
10.Traction control system indicator light “ ”
11.Malfunction indicator light “ ”1
11
2
3
4
5
6
7
8
9
10
UBEDE0E0.book Page 1 Thursday, October 1, 2020 1:04 PM

Instrument and control functions
5-2
5
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).
 Maintain correct tire pressure.
 Do not operate the vehicle in an
extreme manner. For example, re-
peated or excessive opening and
closing of the throttle, racing,
burnouts, wheelies, etc.
EAU88890
ABS warnin g lig ht “ ”
This warning light comes on when the
vehicle is first turned on, and goes off
after starting riding. If the warning light
comes on while riding, the anti-lock
brake system may not work correctly.
WARNING
EWA16043
If the ABS warnin g li ght does not
turn off after reachin g 10 km/h (6
mi/h), or if the warnin g li ght comes
on while ri din g:
 Use extra caution to avoi d pos-
si ble wheel lock durin g emer-
g ency brakin g. 
Have a Yamaha dealer check
the vehicle as soon as possi ble.
TIPThe ABS warning light may come on
while revving the engine with the vehi-
cle on its centerstand, but this does
not indicate a malfunction.
EAU88930
Traction control system in dicator
li g ht “ ”
This indicator light will flash when trac-
tion control has engaged.
If the traction control system is turned
off, this indicator light will come on.
(See page 5-14.)TIPWhen the vehicle is turned on, the light
should come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check vehicle.
EAU89252
Stan din g assist in dicator li ght “ ”
This indicator light flashes when the
standing assist can be used.
UBEDE0E0.book Page 2 Thursday, October 1, 2020 1:04 PM

Instrument and control functions
5-3
5 The indicator light comes on when the
standing assist is engaged.
TIPWhen the vehicle is turned on, the light
will come on for a few seconds, and
then go off. If the light does not come
on, have a Yamaha dealer check the
vehicle.
EAU89262
Stan
din g assist warnin g lig ht “ ”
This warning light comes on if a prob-
lem is detected in the standing assist.
If this occurs, have a Yamaha dealer
check the system.TIP Depending on the problem, the
engine speed may be limited and
the vehicle cannot be driven nor-
mally.
 When the vehicle is turned on, the
light will come on for a few sec-
onds, and then go off. If the light
does not come on, or if the light
remains on, have a Yamaha dealer
check the vehicle.
EAU78083
Smart key system in dicator
li g ht “ ”
This indicator light will flash when com-
munication between the vehicle and
smart key takes place and when cer-
tain smart key system operations are
carried out.
The indicator light may also flash when
there is an error in the smart key sys-
tem.TIPWhen the vehicle is turned on, the light
should come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check the vehicle.
EAU86811
Multi-function meter unit1. Fuel meter
2. Clock
3. Icy road warning indicator “ ”
4. Tachometer
5. Speedometer
6. Multi-function display
1. “SEL/RES” switch1
2
3
4
5
6
1
UBEDE0E0.book Page 3 Thursday, October 1, 2020 1:04 PM

Instrument and control functions
5-15
5 Resetting
the traction control sys-
tem
The traction control system will auto-
matically disable under certain condi-
tions; such as when a sensor fault is
detected, or when only one wheel is al-
lowed to rotate for more than a few
seconds. Should this happen,
the “ ” indicator light will come on.
TIPWhen the vehicle is on the centerstand,
do not rev the engine for an extended
period of time. Otherwise, the traction
control system will automatically dis-
able and need to be reset.If the traction control system automat-
ically disables, reset it by riding under
normal conditions.TIPIf the Ž indicator light remains on
after resetting, the vehicle may still be
ridden; however, have a Yamaha deal-
er check the vehicle as soon as possi-
ble.
EAU89040
Fuel tank capTo access the fuel tank, open the fuel
tank cap lid. (See page 3-9.)
To remove the fuel tank cap, turn the
fuel tank cap counterclockwise until
the release mark “ ” aligns with “ ”,
and then pull the cap off. To install the fuel tank cap, insert the
fuel tank cap onto the tank opening
and turn it clockwise until the install
mark“” aligns with“”.1. Fuel tank cap lid
1
1. Fuel tank cap
2. Release mark Ž
1. Install mark Ž
1
2
1
UBEDE0E0.book Page 15 Thursday, October 1, 2020 1:04 PM

Operation and important rid ing points
7-2
7
EAU91750
Startin g the eng ineThe ignition circuit cut-off system will
allow engine start when the sidestand
is up.
To start the engine1. Turn the main switch on and set
the engine stop switch to the run
position.
2. Confirm the indicator and warning light(s) come on for a few sec-
onds, and then go off. (See page
5-1.)TIPDo not start the engine if the mal-
function indicator light remains on.
 The ABS warning light should
come on and stay on until the ve-
hicle reaches a speed of 10 km/h
(6 mi/h).NOTICE
ECA24110
If a warnin g or in dicator li ght does
not work as d escribed a bove, have a
Yamaha dealer check the vehicle.3. Close the throttle completely. 4. While applying the front or rear
brake, push the start switch.
5. Release the start switch when the engine starts, or after 5 seconds.
Wait 10 seconds before pressing
the switch again to allow battery
voltage to restore.
NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!
EAUM4280
TIPThis model is equipped with a lean an-
gle sensor to stop the engine in case of
a turnover. In this case, the malfunction
Indicator light will come on but this is
not a malfunction. Turn the vehicle
power off and then back on again to
cancel the Indicator light. Failing to do
so will prevent the engine from starting
even though the engine will crank
when pushing the start switch.
UBEDE0E0.book Page 2 Thursday, October 1, 2020 1:04 PM

Periodic maintenance an d a djustment
8-7
8
EAU79370
TIP Engine air filter and V-belt air filter
• This model’s engine air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with compressed air to avoid damaging it.
• The engine air filter element and sub air filter element need to be replaced and the V-belt air filter element needs to be serviced more frequently when riding in unusually wet or dusty areas.27 *Coolin g system • Check coolant level and vehicle
for coolant leakage. √√√√√
• Change. Every 3 years
28 *V-belt • Replace. When the V-belt replacement indicator flashes [every 20000 km (12000 mi)]
29 *Front an
d rear
b rake switches • Check operation.
√√√√√√
30 *Movin
g parts an d
ca bles • Lubricate.
√√√√√
31 *Throttle g
rip hous-
in g an d ca ble • Check operation and free play.
• Adjust the throttle cable free play
if necessary.
• Lubricate the throttle grip housing and cable. √√√√√
32 *Li
ghts, si gnals an d
switches • Check operation.
• Adjust headlight beam.
√√√√√√
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
UBEDE0E0.book Page 7 Thursday, October 1, 2020 1:04 PM

Periodic maintenance an d a djustment
8-10
8 5. Pull the panel outward and slide it
rearward as shown.
To install the panel
1. Place the panel in the original po- sition, and then install the quick
fasteners and the Inner cover. 2. Install the screw.
3. Install the floorboard mat.
EAU19623
Checkin
g the spark plu gThe 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.
1. Quick fastener
1. Panel A
1
1
1. Panel A
1
Specified spark plu g:
NGK/LMAR8A-9
UBEDE0E0.book Page 10 Thursday, October 1, 2020 1:04 PM