Yamaha MT09 User manual

B2K-F8199-30
MTN850-A
OWNER’S MANUAL

WARNING
Introduction
Welcome to the Yamaha world of motorcycling!
As the owner of the MTN 850-A, you are benefiting from Yamaha’s vast experience and newest technology regarding the
design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all advantages of your MTN 850-A. The Owner’s Manual
does not only instruct you in how to operate, inspect and maintain your motorcycle, but also in how to safeguard yourself and
others from trouble and injury.
In addition, the many tips given in this manual will help keep your motorcycle in the best possible condition. If you have any
further questions, do not hesitate to contact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!
Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most cur-
rent product information available at the time of printing, there may be minor discrepancies between your motorcycle and this
manual. If there is any question concerning this manual, please consult a Yamaha dealer.
Please read this manual carefully and completely before operating this motorcycle.

Important Manual Information
Particularly important information is distinguished in this manual by the following notations:
*Product and specifications are subject to change without notice.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICE
TIP
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to the
vehicle or other property.

Important Manual Information
©2018 by Yamaha Motor Co., Ltd.
1st edition, January 2018
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Malaysia.
MTN850-A
OWNER’S MANUAL
HIDF15000501

Table Of Contents
Safety information........................... 1-1
Description....................................... 2-1
Left view ......................................... 2-1
Right view....................................... 2-2
Controls and instruments................ 2-3
Special features............................... 3-1
D-mode (drive mode)...................... 3-1
Traction control system.................. 3-1
Quick shift system .......................... 3-3
Instrument and control functions... 4-1
Immobilizer system......................... 4-1
Main switch/steering lock................ 4-2
Handlebar switches........................ 4-4
Indicator lights and warning lights...... 4-5
Multi-function meter unit................. 4-8
Clutch lever................................... 4-14
Shift pedal..................................... 4-14
Brake lever ................................... 4-14
Brake pedal .................................. 4-15
ABS .............................................. 4-15
Fuel tank cap................................ 4-16
Fuel............................................... 4-17
Fuel tank overflow hose................ 4-19
Catalytic converter........................ 4-19
Seat.............................................. 4-20
Storage compartment................... 4-20
Adjusting the front fork.................. 4-21
Adjusting the shock absorber
assembly......................................... 4-23
Luggage strap holders ................. 4-24
Auxiliary DC connectors............... 4-25
Sidestand..................................... 4-25
Ignition circuit cut-off system........ 4-26
For your safety – pre-operation
checks.............................................. 5-1
Operation and important riding
points................................................ 6-1
Starting the engine......................... 6-1
Shifting........................................... 6-2
Tips for reducing fuel consumption .. 6-3
Engine break-in.............................. 6-3
Parking........................................... 6-4
Periodic maintenance and
adjustment........................................ 7-1
Owner’s tool kit............................... 7-2
Periodic maintenance chart for the
emission control system ................... 7-3
General maintenance and
lubrication chart ................................ 7-5
Removing and installing panels ..... 7-9
Checking the spark plugs............. 7-10
Canister........................................ 7-11
Engine oil and oil filter cartridge.... 7-12
Coolant............................................ 7-15
Air filter element........................... 7-18
Checking the engine idling
speed.............................................. 7-18
Checking the throttle grip free
play................................................. 7-19
Valve clearance........................... 7-19
Tires............................................. 7-19
Cast wheels................................. 7-22
Adjusting the clutch lever free
play................................................. 7-22
Checking the brake lever free
play................................................. 7-23
Brake light switches..................... 7-23
Checking the front and rear brake
pads................................................ 7-24
Checking the brake fluid level...... 7-24
Changing the brake fluid.............. 7-26
Drive chain slack.......................... 7-26
Cleaning and lubricating the drive
chain............................................... 7-28
Checking and lubricating the
cables............................................. 7-28
Checking and lubricating the throttle
grip and cable................................. 7-29
Checking and lubricating the brake
and shift pedals............................. 7-29
Checking and lubricating the brake
and clutch levers ........................... 7-30
Checking and lubricating the
sidestand........................................ 7-30

Table Of Contents
Lubricating the swingarm
pivots............................................... 7-31
Checking the front fork ................. 7-31
Checking the steering................... 7-32
Checking the wheel bearings ....... 7-32
Battery.......................................... 7-32
Replacing the fuses...................... 7-34
Vehicle lights ................................ 7-36
Replacing a turn signal light
bulb................................................ 7-37
Supporting the motorcycle............ 7-37
Troubleshooting............................ 7-38
Troubleshooting charts................. 7-39
Motorcycle care and storage.......... 8-1
Matte color caution......................... 8-1
Care................................................ 8-1
Storage........................................... 8-3
Specifications.................................. 9-1
Consumer information.................. 10-1
Identification numbers .................. 10-1
Diagnostic connector.................... 10-2
Vehicle data recording.................. 10-2
Index............................................... 11-1

1
1-1
Safety Information
Be a Responsible Owner
As the vehicle’s owner, you are
responsible for the safe and proper
operation of your motorcycle.
Motorcycles are single-track vehicles.
Their safe use and operation are
dependent upon the use of proper
riding techniques as well as the
expertise of the operator. Every
operator should know the following
requirements before riding this
motorcycle.
He or she should:
Obtain thorough instructions from
a competent source on all aspects
of motorcycle operation.
Observe the warnings and
maintenance requirements in this
Owner’s Manual.
Obtain qualified training in safe
and proper riding techniques.
Obtain professional technical
service as indicated in this
Owner’s Manual and/or when
made necessary by mechanical
conditions.
Never operate a motorcycle
without proper training or
instruction.
Take a training course. Beginners
should receive training from a
certified instructor. Contact an
authorized motorcycle dealer to
find out about the training courses
nearest you.
Safe Riding
Perform the pre-operation checks
each time you use the vehicle to make
sure it is in safe operating condition.
Failure to inspect or maintain the
vehicle properly increases the
possibility of an accident or equipment
damage. See page 5-1 for a list of
pre-operation checks.
This motorcycle is designed to
carry the operator and a passenger.
The failure of motorists to detect
and recognize motorcycles in traffic
is the predominating cause of
automobile/motorcycle accidents.
Many accidents have been caused
by an automobile driver who did not
see the motorcycle. Making
yourself conspicuous appears to
be very effective in reducing the
chance of this type of accident.
Therefore:
Wear a brightly colored jacket.
Use extra caution when you are
approaching and passing
through intersections, since
intersections are the most likely
places for motorcycle accidents
to occur.
Ride where other motorists can
see you. Avoid riding in another
motorist’s blind spot.
Never maintain a motorcycle
without proper knowledge.
Contact an authorized motorcycle
dealer to inform you on basic
motorcycle maintenance. Certain
maintenance can only be carried
out by certified staff.
Many accidents involve inexperien-
ced operators. In fact, many
operators who have been involved
in accidents do not even have a
current motorcycle license.
Make sure that you are qualified
and that you only lend your
motorcycle to other qualified
operators.
Know your skills and limits.
Staying within your limits may
help you to avoid an accident.
We recommend that you prac-

1
Safety Information
1-2
tice riding your motorcycle
where there is no traffic until you
have become thoroughly familiar
with the motorcycle and all of its
controls.
Many accidents have been caused
by error of the motorcycle
operator. A typical error made by
the operator is veering wide on a
turn due to excessive speed or
under-cornering (insufficient lean
angle for the speed).
The posture of the operator and
passenger is important for proper
control.
Always obey the speed limit and
never travel faster than
warranted by road and traffic
conditions.
Always signal before turning or
changing lanes. Make sure that
other motorists can see you.
The operator should keep both
hands on the handlebar and
both feet on the operator
footrests during operation to
maintain control of the
motorcycle.
The passenger should always
hold onto the operator, the seat
strap or grab bar, if equipped,
with both hands and keep both
feet on the passenger footrests.
Never carry a passenger unless
he or she can firmly place both
feet on the passenger footrests.
Never ride under the influence of
alcohol or other drugs.
This motorcycle is designed for
on-road use only. It is not suitable
for off-road use.
Protective Apparel
The majority of fatalities from
motorcycle accidents are the result of
head injuries. The use of a safety
helmet is the single most critical factor
in the prevention or reduction of head
injuries.
Always wear an approved helmet.
Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.
The use of a jacket, heavy boots,
trousers, gloves, etc., is effective
in preventing or reducing
abrasions or lacerations.
Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.
Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust
system become very hot during or
after operation and can cause
burns.
A passenger should also observe
the above precautions.
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
carbon monoxide can cause
headaches, dizziness, drowsiness,
nausea, confusion, and eventually
death.
Carbon Monoxide is a colorless,
odorless, tasteless gas which may be
present even if you do not see or
smell any engine exhaust. Deadly
levels of carbon monoxide can collect
rapidly and you can quickly be
overcome and unable to save
yourself. Also, deadly levels of carbon
monoxide can linger for hours or days
in enclosed or poorly ventilated areas.
If you experience any symptoms of
carbon monoxide poisoning, leave the
area immediately, getfresh air, and
SEEK MEDICAL TREATMENT.

1
Safety Information
1-3
Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can
rapidly reach dangerous levels.
Do not run engine in poorly
ventilated or partially enclosed
areas such as barns, garages,
or carports.
Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories or cargo to your
motorcycle can adversely affect
stability and handling if the weight
distribution of the motorcycle is
changed. To avoid the possibility of an
accident, use extreme caution when
adding cargo or accessories to your
motorcycle. Use extra care when
riding a motorcycle that has added
cargo or accessories. Here, along with
the information about accessories
below, are some general guidelines to
follow if loading cargo to your
motorcycle:
The total weight of the operator,
passenger, accessories and cargo
must not exceed the maximum load
limit. Operation of an overloaded
vehicle could cause an accident.
Maximum load:
174 kg (384 lb)
When loading within this weight limit,
keep the following in mind:
Cargo and accessory weight
should be kept as low and close to
the motorcycle as possible.
Securely pack your heaviest items
as close to the center of the
vehicle as possible and make sure
to distribute the weight as evenly
as possible on both sides of the
motorcycle to minimize imbalance
or instability.
Shifting weights can create a
sudden imbalance. Make sure
that accessories and cargo are
securely attached to the
motorcycle before riding. Check
accessory mounts and cargo
restraints frequently.
Properly adjust the suspension
for your load (suspension-ad-
justable models only), and
check the condition and
pressure of your tires.
Never attach any large or heavy
items to the handlebar, front
fork, or front fender. These
items, including such cargo as
sleeping bags, duffel bags, or
tents, can create unstable
handling or a slow steering
response.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are
available only from a Yamaha dealer,
have been designed, tested, and
approved by Yamaha for use on your
vehicle.
Many companies with no connection
to Yamaha manufacture parts and
accessories or offer other
modifications for Yamaha vehicles.
Yamaha is not in a position to test the
products that these aftermarket
companies produce. Therefore,
Yamaha can neither endorse nor
This vehicle is not designed to
pull a trailer or to be attached to
a sidecar.

1
Safety Information
1-4
recommend the use of accessories not
sold by Yamaha or modifications not
specifically recommended by Yamaha,
even if sold and installed by a Yamaha
dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket
products similar in design and quality
to genuine Yamaha accessories,
recognize that some aftermarket
accessories or modifications are not
suitable because of potential safety
hazards to you or others. Installing
aftermarket products or having other
modifications performed to your
vehicle that change any of the
vehicle’s design or operation
characteristics can put you and
others at greater risk of serious injury
or death. You are responsible for
injuries related to changes in the
vehicle.
Keep the following guidelines in mind,
as well as those provided under
“Loading” when mounting accessories.
Never install accessories or carry
cargo that would impair the
performance of your motorcycle.
Carefully inspect the accessory
before using it to make sure that it
does not in any way reduce
ground clearance or cornering
clearance, limit suspension travel,
steering travel or control
operation, or obscure lights or
reflectors.
Accessories fitted to the
handlebar or the front fork area
can create instability due to
improper weight distribution or
aerodynamic changes. If
accessories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to a
minimum.
Bulky or large accessories may
seriously affect the stability of
the motorcycle due to
aerodynamic effects. Wind may
attempt to lift the motorcycle, or
the motorcycle may become
unstable in cross winds. These
accessories may also cause
instability when passing or being
passed by large vehicles.
Certain accessories can
displace the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the operator
and may limit control ability,
therefore, such accessories are
not recommended.
Use caution when adding
electrical accessories. If electrical
accessories exceed the capacity
of the motorcycle’s electrical
system, an electric failure could
result, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires and Rims
The tires and rims that came with
your motorcycle were designed to
match the performance capabilities
and to provide the best combination
of handling, braking, and comfort.
Other tires, rims, sizes, and
combinations may not be
appropriate. Refer to page 7-19 for
tire specifications and more
information on replacing your tires.
Transporting the Motorcycle
Be sure to observe following
instructions before transporting the
motorcycle in another vehicle.
Remove all loose items from the
motorcycle.

1
Safety Information
1-5
Check that the fuel cock (if
equipped) is in the “OFF” position
and that there are no fuel leaks.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to
prevent movement.
Shift the transmission in gear (for
models with a manual
transmission).
Secure the motorcycle with
tie-downs or suitable straps that
are attached to solid parts of the
motorcycle, such as the frame or
upper front fork triple clamp (and
not, for example, to
rubber-mounted handlebars or
turn signals, or parts that could
break). Choose the location for
the straps carefully so the straps
will not rub against painted
surfaces during transport.
The suspension should be
compressed somewhat by the
tie-downs, if possible, so that the
motorcycle will not bounce
excessively during transport.

2
2-1
Description
Left view 34 5,6,7 89
1012 11
1, 2
1. Front fork spring preload adjusting bolt (page 4-21)
2. Front fork compression damping force adjusting screw (page 4-21)
3. Shock absorber assembly rebound damping force adjusting screw
(page 4-23)
4. Seat (page 4-20)
5. Fuse box 2 (page 7-34)
6. Main fuse (page 7-34)
7. Fuel injection system fuse (page 7-34)
8. Storage compartment (page 4-20)
9. Shock absorber assembly spring preload adjusting ring (page 4-23)
10.Shift pedal (page 4-14)
11.Engine oil drain bolt (page 7-12)
12.Coolant drain bolt (page 7-16)

2
Description
2-2
Right view 14
6
7
8910 5
2, 3
1. Fuel tank cap (page 4-16)
2. Front fork spring preload adjusting bolt (page 4-21)
3. Front fork rebound damping force adjusting screw (page 4-21)
4. Fuse box 1 (page 7-34)
5. Coolant reservoir (page 7-15)
6. Engine oil level check window (page 7-12)
7. Engine oil filler cap (page 7-12)
8. Brake pedal (page 4-15)
9. Rear brake light switch (page 7-23)
10.Rear brake fluid reservoir (page 7-24)

2
Description
2-3
Controls and instruments
123 4 5 67 8
1. Clutch lever (page 4-14)
2. Left handlebar switches (page 4-4)
3. Main switch/steering lock (page 4-2)
4. Multi-function meter unit (page 4-8)
5. Front brake fluid reservoir (page 7-24)
6. Right handlebar switches (page 4-4)
7. Throttle grip (page 7-19)
8. Brake lever (page 4-14)

1
3
3-1
Special Features
WARNING
WARNING
1. Drive mode switch “MODE”
D-mode (drive mode)
D-mode is an electronically controlled
engine performance system. This
model has three mode selections:
“STD”, “A”, and “B”.
Do not change the drive mode while
the vehicle is moving.
With the throttle grip closed, push
this switch to change the drive mode
in the following order:
STD A B STD
TIPMake sure you understand each
drive mode before operating the
drive mode switch.
The current drive mode is shown
in the drive mode display (page
4-10).
The current drive mode is saved
when the vehicle is turned off.
Mode “STD”
Mode “STD” is suitable for various
riding conditions.
This mode allows the rider to enjoy
smooth and sporty drivability from
the low-speed range to the
high-speed range.
Mode “A”
Mode “A” offers a sportier engine
response in the low- to mid-speed
range compared to mode “STD”.
Mode “B”
Mode “B” offers response that is
somewhat less sharp compared to
mode “STD” for riding situations that
require especially sensitive throttle
operation.
Traction control system
The traction control system (TCS)
helps maintain traction when
accelerating on slippery surfaces,
such as unpaved or wet roads. If
sensors detect that the rear wheel is
starting to slip (uncontrolled
spinning), the traction control system
assists by regulating engine power
as needed until traction is restored.
The traction control system is not a
substitute for riding appropriately
for the conditions. Traction control
cannot prevent loss of traction due
to excessive speed when entering
turns, when accelerating hard at a
sharp lean angle, or while braking,
and cannot prevent front wheel
slipping. As with any motorcycle,
approach surfaces that may be
slippery with caution and avoid
especially slippery surfaces.

3
Special Features
TIP
3-2
Setting the traction control system
NOTICE
1
1. Traction control system indicator light
“”
2. Engine trouble warning light “ ”
12
1. Traction control system switch “TCS”
With the throttle closed, push this
switch down to change from TCS “1”
to TCS “2”. Push up to change from
“2” to“1”.
With the vehicle stopped, push this
switch up for two seconds to turn the
system off. Push down to turn the
system on.
The current TCS setting is shown
in the TCS display (page 4-10).
Traction control can be turned on
or off only when the vehicle is
stopped.
When the key is turned to “ON”,
traction control is turned on and
set to “1” or “2” (whichever was last
selected).
Turn the traction control system off
to help free the rear wheel if the
vehicle gets stuck in mud, sand, or
other soft surfaces.
TCS “OFF”
TCS “OFF” turns the traction control
system off.
TCS “1”
TCS “1” minimizes traction control
system assist.
TCS “2”
TCS “2” maximizes traction control
assist; wheel spin is most strongly
controlled.
The “ ” indicator light flashes when
traction control has engaged. You
may notice slight changes in engine
and exhaust sounds when the system
has engaged.
When the traction control system has
been set to “OFF”, the “ ” indicator
light will come on.
Use only the specified tires. (See
page 7-19.) Using different sized
tires will prevent the traction
control system from controlling tire
rotation accurately.

3
Special Features
TIP
TIP
3-3
Resetting the traction control
system
The traction control system will
automatically disable when:
the front wheel or rear wheel
comes off the ground while riding.
excessive rear wheel spin is
detected while riding.
either wheel is rotated with the key
turned to “ON” (such as when
performing maintenance).
If the traction control system is
disabled, both the “ ” indicator light
and the “ ” warning light will come on.
Should this occur, try resetting the
system as follows.
Stop the vehicle and turn the key
to “OFF”.
Wait a few seconds and then turn
the key back to “ON”.
The “ ” indicator light should turn
off and the system be enabled.
If the “ ” indicator light remains on
after resetting, the vehicle may still be
ridden; however, have a Yamaha
dealer check the vehicle as soon as
possible.
Have a Yamaha dealer check the
1.
2.
3.
4.
vehicle and turn off the “ ”
warning light. Quick shift system
The quick shift system (QS) allows
for full-throttle, clutch lever-less,
electronically-assisted upshifts.
When the shift switch detects motion
in the shift pedal (page 4-14), engine
power and drive torque are
momentarily adjusted to allow the
upshift to occur.
The quick shift system operates
when traveling at least 20 km/h
(12mi/h) with an engine speed of
2300r/min or higher, and only
when accelerating.
It does not operate when the
clutch lever is pulled.

4
4-1
Instrument And Control Functions
Immobilizer system light (See page 4-7.)
NOTICE
1. Code re-registering key (red bow)
2. Standard keys (black bow)
This vehicle is equipped with an
immobilizer system to help prevent
theft by re-registering codes in the
standard keys. This system consists
of the following:
a code re-registering key (with a
red bow)
two standard keys (with a black
bow) that can be re-registered with
new codes
a transponder (which is installed in
the code re-registering key)
an immobilizer unit
an ECU
an immobilizer system indicator
The key with the red bow is used to
register codes in each standard key.
Since re-registering is a difficult
process, take the vehicle along with
all three keys to a Yamaha dealer to
have them re-registered. Do not use
the key with the red bow for driving. It
should only be used for re-registering
the standard keys. Always use a
standard key for driving.
DO NOT LOSE THE CODE
RE-REGISTERING KEY!
CONTACT YOUR DEALER
IMMEDIATELY IF IT IS LOST! If
the code re-registering key is
lost, registering new codes in the
standard keys is impossible. The
standard keys can still be used to
start the vehicle, however if code
re-registering is required (i.e., if a
new standard key is made or all
keys are lost) the entire
immobilizer system must be
replaced. Therefore, it is highly
recommended to use either
standard key and keep the code
re-registering key in a safe place
Do not submerse any key in
water.
Do not expose any key to
excessively high temperatures.
Do not place any key close to
magnets (this includes, but not
limited to, products such as
speakers, etc.).
Do not place items that transmit
electrical signals close to any
key.
Do not place heavy items on any
key.
Do not grind any key or alter its
shape.
Do not disassemble the plastic
part of any key.
Do not put two keys of any
immobilizer system on the same
key ring.
Keep the standard keys as well
as keys of other immobilizer
systems away from this vehicle’s
code re-registering key.
Keep other immobilizer system
keys away from the main switch
as they may cause signal
interference.

P
ON
OFF
LOCK
4
Instrument And Control Functions
4-2
Main switch/steering lock
WARNING
The main switch/steering lock controls
the ignition and lighting systems, and
is used to lock the steering. The
various positions are described below.
Be sure to use the standard key (black
bow) for regular use of the vehicle. To
minimize the risk of losing the code
re-registering key (red bow), keep it in
a safe place and only use it for code
re-registering.
TIP
TIP
ON
All electrical circuits are supplied with
power. The meter lighting, taillight,
license plate light and auxiliary lights
come on, and the engine can be
started. The key cannot be removed.
The headlight comes on automatically
when the engine is started and stays
on until the key is turned to “OFF”,
even if the engine stalls.
OFF
All electrical systems are off. The key
can be removed.
Never turn the key to “OFF” or
“LOCK” while the vehicle is
moving. Otherwise the electrical
systems will be switched off, which
may result in loss of control or an
accident.
LOCK
The steering is locked and all electrical
systems are off. The key can be
removed.

12
12
4
Instrument And Control Functions
TIP
4-3
To lock the steering To unlock the steering
(Parking)
NOTICE
1. Push.
2. Turn. 1. Push.
2. Turn.
Turn the handlebars all the way to
the left.
With the key in the “OFF” position,
push the key in and turn it to
“LOCK”.
Remove the key.
1.
2.
3.
If the steering will not lock, try turning
the handlebars back to the right
slightly.
From the “LOCK” position, push the
key in and turn it to “OFF”.
The hazard lights and turn signal
lights can be turned on, but all other
electrical systems are off. The key
can be removed. The steering must
be locked before the key can be
turned to “ ”.
Using the hazard or turn signal
lights for an extended length of
time may cause the battery to
discharge.