2021 YAMAHA TRICITY 300 check engine

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

Safety information
1-3
1Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be pres-
ent even if you do not see or smell any
engine exhaust. Deadly levels of car-
bon monoxide can collect rapidly and
you can quickly be overcome and un-
able to save yourself. Also, deadly lev-
els of carbon monoxide can linger for
hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
soning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
 Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
 Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
 Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors. Loa
din g
Adding accessories or cargo to your
vehicle can adversely affect stability
and handling if the weight distribution
of the vehicle is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or acces-
sories to your vehicle. Use extra care
when riding a vehicle that has added
cargo or accessories. Here, along with
the information about accessories be-
low, are some general guidelines to fol-
low if loading cargo to your vehicle:
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloa ded vehicle
coul d cause an acci dent.
When loading within this weight limit,
keep the following in mind:  Cargo and accessory weight
should be kept as low and close to
the vehicle as possible. Securely
pack your heaviest items as close
to the center of the vehicle as pos- sible and make sure to distribute
the weight as evenly as possible
on both sides of the vehicle to
minimize imbalance or instability.
 Shifting weights can create a sud-
den imbalance. Make sure that
accessories and cargo are se-
curely attached to the vehicle be-
fore riding. Check accessory
mounts and cargo restraints fre-
quently.
• Properly adjust the suspension for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy items to the handlebar, front
fork, or front fender. Such items
can create unstable handling or
a slow steering response.
 This vehicle is not desi gne d to
pull a trailer or to be attached to
a si decar.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
Maximum loa d:
172 kg (379 lb)
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Description
2-2
2
EAU10421
Right view
1
2
3
4
5
6
7
1. Storage compartment (page 5-18)
2. Tool kit (page 8-2)
3. Fuel tank cap (page 5-15)
4. Brake pedal (page 5-11)
5. Centerstand (page 8-29)
6. Engine oil level check window (page 8-12)
7. Engine oil filler cap (page 8-12)
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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
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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.
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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
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Instrument and control functions
5-4
5
WARNING
EWA12423
Be sure to stop the vehicle before
makin g any settin g chan ges to the
multi-function meter unit. Chang ing
settin gs while ri din g can distract the
operator an d increase the risk of an
acci dent.
EAU89230
Switchin g the display units
The display units can be switched be-
tween kilometers and miles.
To switch the display units1. Turn the vehicle off.
2. While pushing the “SEL” switch, turn the vehicle on.
3. Continue to push the “SEL” switch for at least 5 seconds.
EAU86831
Spee dometer
The speedometer shows the vehicle’s
traveling speed.
EAU87180
Tachometer
The tachometer allows the rider to
monitor the engine speed and keep it
within the ideal power range.NOTICE
ECA23050
Do not operate the en gine in the ta-
chometer hi gh-r/min zone.
Hi gh-r/min zone: 9000 r/min an d
a b ove
EAU86841
Fuel meter
The fuel meter indicates the amount of
fuel in the fuel tank. The display seg-
ments of the fuel meter disappear from
“F” (full) towards “E” (empty) as the fuel
level decreases. When approximately
2.4 L (0.63 US gal, 0.53 Imp.gal) of fuel
remains, the last segment starts flash-
ing. Refuel as soon as possible.TIPIf a problem is detected in the electrical
circuit, the fuel level segments will flash
repeatedly. If this occurs, have a
Yamaha dealer check the vehicle.
1. Tachometer
2. High-r/min zone
1
2
1. Fuel meter
1
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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
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