Triumph Bonneville T100 2018 User guide

Owner's Handbook
Bonneville T100, Bonneville T120,
Bonneville T120 Ace, Bonneville T120 Diamond,
Speed Twin, Street Scrambler, Street Twin,
Thruxton and Thruxton R
This handbook contains information on the Triumph Bonneville T100, Bonneville T120,
Bonneville T120 Ace, Bonneville T120 Diamond, Speed Twin, Street Scrambler,
Street Twin, Thruxton and Thruxton R motorcycles. Always store this Owner's
Handbook with the motorcycle and refer to it for information whenever necessary.
The information contained in this publication is based on the latest information
available at the time of printing. Triumph reserves the right to make changes at any
time without prior notice, or obligation.
Not to be reproduced wholly or in part without the written permission of Triumph
Motorcycles Limited.
© Copyright 11.2018 Triumph Motorcycles Limited, Hinckley, Leicestershire, England.
Publication part number 3855598-US issue 1
1

2
Table of Contents
This handbook contains a number of different sections. The table of contents below
will help you find the beginning of each section where, in the case of the major
sections, a further table of contents will help you find the specific subject required.
Foreword 3
Safety First 7
Warning Label Locations 14
Parts Identification 16
Serial Numbers 29
General Information 31
How to Ride the Motorcycle 79
Accessories, Loading and Passengers 93
Maintenance and Adjustment 97
Cleaning and Storage 149
Specifications - Bonneville T100 and Bonneville T120 159
Specifications - Bonneville T120 Ace and Diamond 163
Specifications - Street Scrambler 167
Specifications - Speed Twin 171
Specifications - Street Twin 175
Specifications - Thruxton and Thruxton R 179
Index 183

Foreword
3
Foreword
Warnings, Cautions and
Notes
Throughout this Owner's Handbook
particularly important information is
presented in the following form:
Warning
This warning symbol identifies special
instructions or procedures, which if
not correctly followed could result in
personal injury, or loss of life.
Caution
This caution symbol identifies special
instructions or procedures, which,
if not strictly observed, could result
in damage to, or destruction of,
equipment.
Note
This note symbol indicates points of
particular interest for more efficient and
convenient operation.
Warning Labels
At certain areas of the motorcycle,
the symbol (above) can be seen. The
symbol means 'CAUTION: REFER TO THE
HANDBOOK' and will be followed by a
pictorial representation of the subject
concerned.
Never attempt to ride the motorcycle
or make any adjustments without
reference to the relevant instructions
contained in this handbook.
See page 14 for the location of all
labels bearing this symbol. Where
necessary, this symbol will also appear
on the pages containing the relevant
information.
Maintenance
To ensure a long, safe and trouble free
life for your motorcycle, maintenance
should only be carried out by an
authorized Triumph dealer.
Only an authorized Triumph dealer
will have the necessary knowledge,
equipment and skills to maintain your
Triumph motorcycle correctly.
To locate your nearest authorized
Triumph dealer, visit the Triumph web
site at www.triumph.co.uk or telephone
the authorized distributor in your
country. Their address is given in the
service record book that accompanies
this handbook.

Foreword
4
Noise Control System
Tampering with the noise control
system is prohibited.
Owners are warned that the law may
prohibit:
1. The removal or rendering
inoperative by any person other
than for purposes of maintenance,
repair or replacement, of any device
or element of design incorporated
into any new vehicle for the purpose
of noise control prior to its sale or
delivery to the ultimate purchaser
or while it is in use and,
2. the use of the vehicle after such
device or element of design
has been removed or rendered
inoperative by any person.
Among those acts presumed to
constitute tampering are the acts listed
below:
• Removal of, or puncturing the
muffler, baffles, header pipes or any
other component which conducts
exhaust gases.
• Removal of or puncturing of any
part of the intake system.
• Lack of proper maintenance.
• Replacing any moving parts of the
vehicle, or parts of the exhaust or
intake system, with parts other than
those specified by the manufacturer.
Immobilizer and Tire Pressure
Monitoring System
This device complies with part 15 of the
Federal Communications Commission
(FCC) Rules.
Operation is subject to the following two
conditions:
1. This device may not cause harmful
interference.
2. This device must accept any
interference received, including
interference that may cause
undesired operation.
Changes or modifications to the device
could void the user’s authority to
operate the equipment.
Tires
With reference to the Pneumatic Tires
and Tubes for Automotive Vehicles
(Quality Control) Order, 2009, Cl. No.
3 (c), it is declared by M/s. Triumph
Motorcycles Ltd. that the tires
mounted on this motorcycle meet the
requirements of IS 15627: 2005 and
comply with the requirements under
Central Motor Vehicle Rules (CMVR),
1989.

Foreword
5
Owner's Handbook
Warning
This Owner's Handbook, and all other
instructions that are supplied with
your motorcycle, should be considered
a permanent part of your motorcycle
and should remain with it even if your
motorcycle is subsequently sold.
All riders must read this Owner's
Handbook and all other instructions
which are supplied with your
motorcycle, before riding, in order to
become thoroughly familiar with the
correct operation of your motorcycle's
controls, its features, capabilities
and limitations. Do not lend your
motorcycle to others as riding when
not familiar with your motorcycle's
controls, features, capabilities and
limitations can lead to an accident.
Thank you for choosing a Triumph
motorcycle. This motorcycle is the
product of Triumph's use of proven
engineering, exhaustive testing,
and continuous striving for superior
reliability, safety and performance.
Please read this Owner's Handbook
before riding in order to become
thoroughly familiar with the correct
operation of your motorcycle's controls,
its features, capabilities and limitations.
This handbook includes safe riding tips,
but does not contain all the techniques
and skills necessary to ride a motorcycle
safely.
Triumph strongly recommends that
all riders undertake the necessary
training to ensure safe operation of this
motorcycle.
This handbook is available from your
local dealer in:
• English
• US English
• French
• German
• Italian
• Dutch
• Spanish
• Portuguese
• Swedish
• Japanese
• Thai.
Talk to Triumph
Our relationship with you does not end
with the purchase of your Triumph. Your
feedback on the buying and ownership
experience is very important in helping
us develop our products and services
for you.
Please help us by ensuring your
authorized Triumph dealership has your
email address and registers this with us.
You will then receive an online customer
satisfaction survey invitation to your
email address where you can give us
this feedback.
Your Triumph Team.

Foreword
6
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Safety First
7
Safety First
The Motorcycle
All Models Except Street Scrambler
Warning
This motorcycle is designed for on-
road use only. It is not suitable for off-
road use.
Off-road operation could lead to loss
of control of the motorcycle resulting
in an accident causing injury or loss of
life.
Street Scrambler Only
Warning
This motorcycle is designed for on-
road and light off-road use. Light off-
road use includes use on unpaved, dirt
or gravel roads, but does not include
riding on any motocross course,
any off-road competition (such as
motocross or enduro riding), or riding
off-road with a passenger.
Light off-road use does not include
jumping the motorcycle or riding over
obstacles. Do not attempt to jump
over any bumps or obstacles. Do not
attempt to ride over any obstacles.
Extreme off-road use could lead to
loss of motorcycle control and an
accident.
Warning
This motorcycle is not designed to tow
a trailer or be equipped with a sidecar.
Installing a sidecar and/or a trailer
may result in loss of control and an
accident.
Warning
This motorcycle is designed for use
as a two-wheeled vehicle capable of
carrying a rider on his/her own, or a
rider and one passenger (subject to
a passenger seat and footrests being
installed).
The total weight of the rider, and any
passenger, accessories and luggage
must not exceed the maximum load
limit of 463 lb (210 kg).

Safety First
8
Fuel and Exhaust Fumes
Warning
GASOLINE IS HIGHLY FLAMMABLE:
Always turn off the engine when
refueling.
Do not refuel or open the fuel filler cap
while smoking or in the vicinity of any
open (naked) flame.
Take care not to spill any gasoline on
the engine, exhaust pipes or mufflers
when refueling.
If gasoline is swallowed, inhaled or
allowed to get into the eyes, seek
immediate medical attention.
Spillage on the skin should be
immediately washed off with soap
and water and clothing contaminated
with gasoline should immediately be
removed.
Burns and other serious skin
conditions may result from contact
with gasoline.
Warning
Never start the engine or run the
engine in a confined area.
Exhaust fumes are poisonous and can
cause loss of consciousness and death
within a short period of time.
Always operate the motorcycle in the
open air or in an area with adequate
ventilation.
Helmet and Clothing
Warning
When riding the motorcycle, both
rider and passenger (on models where
carrying a passenger is permitted)
must always wear appropriate clothing
including a motorcycle helmet, eye
protection, gloves, boots, trousers
(close fitting around the knee and
ankle) and a brightly colored jacket.
During off-road use (on models
suitable for off-road use), the rider
must always wear appropriate clothing
including trousers and boots.
Brightly colored clothing will
considerably increase a rider's
(or passenger's) visibility to other
operators of road vehicles.
Although full protection is not possible,
wearing correct protective clothing
can reduce the risk of injury when
riding.

Safety First
9
Warning
A helmet is one of the most important
pieces of riding gear as it offers
protection against head injuries. You
and your passenger's helmet should
be carefully chosen and should fit you
or your passenger's head comfortably
and securely. A brightly colored helmet
will increase a rider's (or passenger's)
visibility to other operators of road
vehicles.
An open face helmet offers some
protection in an accident though a full
face helmet will offer more.
Always wear a visor or approved
goggles to help vision and to protect
your eyes.
When choosing a helmet, always look for
a DOT (Department of Transport) sticker
indicating that the helmet has DOT
approval. Do not buy a helmet without
DOT approval.
Parking
Warning
Always switch off the engine and
remove the ignition key before
leaving the motorcycle unattended.
By removing the key, the risk of use
of the motorcycle by unauthorized or
untrained persons is reduced.
When parking the motorcycle, always
remember the following:
- Engage first gear to help prevent the
motorcycle from rolling off the stand.
- The engine and exhaust system
will be hot after riding. DO NOT park
where pedestrians, animals and/
or children are likely to touch the
motorcycle.
- Do not park on soft ground or on
a steeply inclined surface. Parking
under these conditions may cause
the motorcycle to fall over.
For further details, please refer to the
'How to Ride the Motorcycle' section of
this Owner's Handbook.

Safety First
10
Parts and Accessories
Warning
Owners should be aware that the
only approved parts, accessories
and conversions for any Triumph
motorcycle are those which carry
official Triumph approval and are
installed to the motorcycle by an
authorized dealer.
In particular, it is extremely hazardous
to install or replace parts or
accessories whose installation requires
the dismantling of, or addition to,
either the electrical or fuel systems
and any such modification could cause
a safety hazard.
The installation of any non-approved
parts, accessories or conversions may
adversely affect the handling, stability
or other aspect of the motorcycle
operation that may result in an
accident causing injury or death.
Triumph does not accept any liability
whatsoever for defects caused by the
installation of non-approved parts,
accessories or conversions or the
installation of any approved parts,
accessories or conversions by non-
approved personnel.
Maintenance/Equipment
Warning
Consult your authorized Triumph
dealer whenever there is doubt as to
the correct or safe operation of this
Triumph motorcycle.
Remember that continued operation of
an incorrectly performing motorcycle
may aggravate a fault and may also
compromise safety.
Warning
Make sure all equipment that is
required by law is installed and
functioning correctly.
The removal or alteration of the
motorcycle’s lights, mufflers, emission
or noise control systems can violate
the law.
Incorrect or improper modification may
adversely affect the handling, stability
or other aspect of the motorcycle
operation, which may result in an
accident causing injury or death.
Warning
If the motorcycle is involved in an
accident, collision or fall, it must be
taken to an authorized Triumph dealer
for inspection and repair.
Any accident can cause damage to
the motorcycle that, if not correctly
repaired, may cause a second accident
that may result in injury or death.

Safety First
11
Riding
Warning
Never ride the motorcycle when
fatigued or under the influence of
alcohol or other drugs.
Riding when under the influence of
alcohol or other drugs is illegal.
Riding when fatigued or under the
influence of alcohol or other drugs
reduces the rider's ability to maintain
control of the motorcycle and may
lead to loss of control and an accident.
Warning
All riders must be licensed to operate
the motorcycle.
Operation of the motorcycle without
a license is illegal and could lead to
prosecution.
Operation of the motorcycle without
formal training in the correct riding
techniques that are necessary to
become licensed is dangerous and may
lead to loss of motorcycle control and
an accident.
Warning
Always ride defensively and wear
the protective equipment mentioned
elsewhere in this foreword.
Remember, in an accident, a
motorcycle does not give the same
impact protection as a car.
Warning
This Triumph motorcycle should be
operated within the legal speed limits
for the particular road traveled.
Operating a motorcycle at high speeds
can be potentially dangerous since the
time available to react to given traffic
situations is greatly reduced as road
speed increases.
Always reduce speed in potentially
hazardous driving conditions such as
bad weather or heavy traffic.
Warning
Continually observe and react to
changes in road surface, traffic and
wind conditions. All two-wheeled
vehicles are subject to external forces
which may cause an accident. These
forces include but are not limited to:
- Wind draft from passing vehicles
- Potholes, uneven or damaged road
surfaces
- Bad weather
- Rider error.
Always operate the motorcycle at
moderate speed and away from
heavy traffic until you have become
thoroughly familiar with its handling
and operating characteristics. Never
exceed the legal speed limit.

Safety First
12
Wobble/Weave
A weave is a relatively slow oscillation
of the rear of the motorcycle, while
a wobble is a rapid, possibly strong
shaking of the handlebar. These are
related but distinct stability problems
usually caused by excessive weight in
the wrong place, or by a mechanical
problem such as worn or loose bearings
or under-inflated or unevenly worn tires.
Your solution to both situations is
the same. Keep a firm hold on the
handlebars without locking arms or
fighting the steering. Smoothly ease off
the throttle to slow gradually. Do not
apply the brakes, and do not accelerate
to try to stop the wobble or weave. In
some cases, it helps to shift your body
weight forward by leaning over the tank.
Copyright © 2005 Motorcycle Safety
Foundation. All rights reserved. Used
with permission.
Handlebars and Footrests
Warning
The rider must maintain control of
the vehicle by keeping hands on the
handlebars at all times.
The handling and stability of a
motorcycle will be adversely affected
if the rider removes their hands from
the handlebars, resulting in loss of
motorcycle control and an accident.
Warning
The rider and passenger (if applicable)
must always use the footrests
provided, during operation of the
vehicle.
By using the footrests, both rider
and passenger will reduce the risk
of inadvertent contact with any
motorcycle components and will
also reduce the risk of injury from
entrapment of clothing.

Safety First
13
Warning
Use of a motorcycle with bank angle
indicators worn beyond the maximum
limit will allow the motorcycle to be
banked to an unsafe angle. Therefore,
always replace the bank angle
indicator pegs before they are worn
to their maximum limit. Banking to an
unsafe angle may cause instability,
loss of motorcycle control and an
accident.
Details of the bank angle wear limits
can be found in the Maintenance and
Adjustment section on page 132.
Warning
The bank angle indicators must not
be used as a guide to how far the
motorcycle may be safely banked.
This depends on many various
conditions including, but not limited
to, road surface, tire condition and
weather. Banking to an unsafe
angle may cause instability, loss of
motorcycle control and an accident.
Warning
When banking and the bank angle
indicator, attached to the rider's
footrest, makes contact with the
ground, the motorcycle is nearing its
bank angle limit. A further increase of
the banking angle is unsafe.
Banking to an unsafe angle may cause
instability, loss of motorcycle control
and an accident.
citc
1
1. Bank angle indicator

Warning Label Locations
14
Warning Label Locations
The labels detailed on this and the following pages draw your attention to important
safety information in this handbook. Before riding, make sure that all riders have
understood and complied with all the information to which these labels relate.
R.P.M.
DAILY SAFETY CHECKS
TÄGLICHE SICHERHEITSKONTROLLEN
CONTROLES DE SECURITE QUOTIDIENS
CHEQUEOS DE SEGURIDAD DIARIOS
VERIFICAÇÕES DIÁRIAS DE SEGURANÇA
VERIFICHE GIORNALIERE DI SICUREZZA
DAGELIJSKE VEILIGHEIDSINSPECTIES
DAGLIG SÄKERHETSKONTROLL
運行前点検
678
1234
5
MAX LOAD
5 kg (11 lbs)
MAX LOAD
3 kg (6.6 lbs)
1. Headlight (page 143)
2. Breaking-In (page 76)
3. Helmet (page 8)
4. Luggage Rack (if equipped) (page 74)
5. Panniers (if equipped) (page 93)
6. Coolant (page 107)
7. Daily Safety Checks (page 77)
8. Tires (page 132)

Warning Label Locations
15
Warning Label Locations (continued)
Caution
All warning labels and decals, with the exception of the Breaking-in label, are
mounted on the motorcycle using a strong adhesive. In some cases, labels are
installed prior to an application of paint lacquer. Therefore, any attempt to remove
the warning labels will cause damage to the paintwork or bodywork.
12
6 7
RON/ROZ 95 min. 91
E5 E10
3900691
Unleaded fuel only
Carburant sans plomb
Gasolina sin plomo
Bleifreies Benzin
Endast blyfri bensin
Benzina senza piombo
Ongelode Brandstof
Combustival sem schumbo
34
5
1. Engine Oil (page 103)
2. E5 and E10 Fuel (if equipped) (page 63)
3. Unleaded Fuel (page 63)
4. Mirrors (page 122)
5. Windshield (if equipped) (page 154)
6. Drive Chain (page 113)
7. Tire Pressure Monitoring System
(if equipped) (page 52)

Parts Identification
16
Parts Identification
Bonneville T100, Bonneville T120, Bonneville T120 Ace and
Bonneville T120 Diamond (Bonneville T120 shown)
1
2
3456
7
8
91 0111213
14
15
16
17
1. Front turn signal
2. Headlight
3. Clutch lever
4. Battery (under seat)
5. Owner’s Handbook (under seat) or
supplied separately
6. Brake/tail light
7. Rear turn signal
8. Rear brake disc
9. Rear brake caliper
10. Coolant expansion tank
11. Coolant expansion tank cap
12. Side stand
13. Gear shift pedal
14. Horn
15. Radiator
16. Front brake caliper
17. Front brake disc

Parts Identification
17
Parts Identification - Continued
Bonneville T100, Bonneville T120, Bonneville T120 Ace and
Bonneville T120 Diamond (Bonneville T120 shown)
13 4
6
891011121314 7
52
1. Fuel tank
2. Coolant pressure cap (under fuel tank)
3. Fuel filler cap
4. Front brake fluid reservoir
5. Front brake lever
6. Front fork
7. Oil filler plug
8. Oil level sight glass
9. Rear brake pedal
10. Rear brake fluid reservoir (behind side
panel)
11. Adjustment tool (behind side panel)
12. Drive chain
13. Rear suspension unit
14. Muffler

Parts Identification
18
Parts Identification
Street Scrambler
1
2
3
45 6
7
8
91011
12
13
14
15
16
17
18
1. Front turn signal
2. Headlight
3. Clutch lever
4. Adjustment tool (behind side panel)
5. Battery (under seat)
6. Owner’s Handbook (under seat)
7. Brake/tail light
8. Rear turn signal
9. Rear brake disc
10. Rear brake caliper
11. Coolant expansion tank
12. Coolant expansion tank cap
13. Side stand
14. Gear shift pedal
15. Horn
16. Radiator
17. Front brake caliper
18. Front brake disc

Parts Identification
19
Parts Identification - Continued
Street Scrambler
6
7
8
5
12
9
10
3
11
4
12
13
1. Fuel tank
2. Coolant pressure cap (under fuel tank)
3. Fuel filler cap
4. Front brake fluid reservoir
5. Front brake lever
6. Front fork
7. Oil filler plug
8. Oil level sight glass
9. Rear brake pedal
10. Rear brake fluid reservoir (behind side
panel)
11. Drive chain
12. Rear suspension unit
13. Muffler

Parts Identification
20
Parts Identification
Speed Twin
6
1
2
3 4 5
7
891011121314
1. Front turn signal
2. Headlight
3. Clutch lever
4. Battery (under seat)
5. Rear turn signal
6. Brake/tail light
7. Rear brake disc
8. Rear brake caliper
9. Side stand
10. Gear shift pedal
11. Horn
12. Radiator
13. Front brake caliper
14. Front brake disc