Triumph Speed 400 User guide

OWNER’S HANDBOOK 01
Speed 400 and Scrambler 400 X
MIN
This handbook contains information on the Triumph Speed 400 and Scrambler 400 X 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 America Limited. Este
Manual del propietario está disponible en español.
© Copyright 09.2023 Triumph Motorcycles America Limited.
Publication part number 3850291-US-EN issue 1

CONTENTS
02
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.
03 FOREWORD
07 SAFETY FIRST
16 WARNING LABELS
18 PARTS IDENTIFICATION
23 SERIAL NUMBERS
25 INSTRUMENTS
41 GENERAL INFORMATION
65 HOW TO RIDE THE MOTORCYCLE
77 ACCESSORIES, LOADING AND PASSENGERS
83 MAINTENANCE AND ADJUSTMENT
137 CLEANING AND STORAGE
147 WARRANTY
159 SPECIFICATIONS
165 INDEX
169 APPROVAL INFORMATION

FOREWORD 03
Owner's Handbook
WARNING
The Owner's Handbook or Quick
Start Guide (where supplied with
the motorcycle), and all other
documents 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 the Owner's
Handbook, Quick Start Guide, and all
other documents 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 may lead to
loss of motorcycle control which could
result in serious injury or death.
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 Owner's 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.
The latest version of this
Owner's Handbook containing
any changes is available from
your local dealer and online from
www.triumphmotorcycles.co.uk/
handbooks in:
▼English
▼US English
▼Arabic
▼Chinese
▼Dutch
▼French
▼German
▼Italian
▼Japanese
▼Portuguese (Brazil)
▼Spanish
▼Swedish
▼Thai
▼Finnish (available online only from
www.triumphmotorcycles.co.uk/
handbooks)
▼Portuguese (available
online only from
www.triumphmotorcycles.co.uk/
handbooks).
The languages available for this Owner's
Handbook are dependent on the specific
motorcycle model and country.

FOREWORD
04
Dangers, Warnings, Cautions
and Notices
Particularly important information is
presented in the following form:
DANGER
This danger symbol identifies special
instructions or procedures which, if
not correctly followed, will result in
serious injury, or death.
WARNING
This warning symbol identifies special
instructions or procedures which, if
not correctly followed, could result in
serious injury, or death.
CAUTION
This caution symbol identifies special
instructions or procedures which, if
not strictly observed, could result in
minor or moderate injury.
NOTICE
This notice 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 and/or text.
Never attempt to ride the motorcycle
or make any adjustments without
reference to the relevant instructions
contained in this handbook.
For the location of all labels showing
this symbol, see the Warning Label
Locations section of this Owner's
Handbook. 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 a
competent person with the specialist
knowledge and technical understanding
of motorcycles, such as an authorized
Triumph dealer.
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 05
Noise Control System
Tampering with the noise control
system is prohibited.
Owners are warned that the law may
prohibit:
▼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,
▼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.
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.
Off-road Use
Scrambler 400 X Only
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.

FOREWORD
06
This page intentionally left blank

SAFETY FIRST 07
The Motorcycle
Speed 400
WARNING
This motorcycle is designed for on-
road use only.
Do not ride this motorcycle off-road.
Off-road operation may lead to loss of
motorcycle control which could result
in serious injury or death.
Scrambler 400 X
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 may lead to
loss of motorcycle control which could
result in serious injury or death.
All Models
WARNING
This motorcycle is designed for use
as a two-wheeled vehicle capable
of carrying a rider and up to 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 as specified in the Specifications
section.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.
WARNING
This motorcycle is not designed to tow
a trailer or be equipped with a sidecar.
Mounting a sidecar and/or a trailer
may affect the handling, stability
or other aspect of the motorcycle
operation.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.

SAFETY FIRST
08
Fuel and Exhaust Fumes
DANGER
Never start the engine or run the
engine in a confined area.
Always operate the motorcycle in the
open air or in an area with adequate
ventilation.
Exhaust fumes are poisonous and will
cause loss of consciousness and death
within a short period of time.
WARNING
GASOLINE IS HIGHLY FLAMMABLE:
- Always turn off the engine when
refueling.
- Pay full attention and remain alert
while 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 gas 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 gas should
immediately be removed.
- Burns and other serious skin
conditions may result from contact
with gas.
Failure to follow the advice above
could result in serious injury or death.
Helmet and Clothing
DANGER
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.
Failure to follow the advice above will
result in serious injury or death.

SAFETY FIRST 09
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 serious injury or
death.
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.
Maintenance and Equipment
WARNING
Whenever there is doubt as to the
correct or safe operation of this
motorcycle, contact a competent
person with the specialist knowledge
and technical understanding of
motorcycles, such as an authorized
Triumph dealer.
Operation of an incorrectly performing
motorcycle may aggravate a fault and
may also compromise safety.
Continued operation of an incorrectly
performing motorcycle may affect the
handling, stability or other aspect of
the motorcycle operation, leading to
loss of motorcycle control which could
result in serious injury or death.
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
affect the handling, stability or other
aspect of the motorcycle operation,
leading to loss of motorcycle control
which could result in serious injury or
death.

SAFETY FIRST
10
WARNING
If the motorcycle is involved in an
accident, collision or fall, it must be
taken for inspection and repair.
Inspections and repairs must be
completed by a competent person with
the specialist knowledge and technical
understanding of motorcycles, such as
an authorized Triumph dealer.
Any accident can cause damage to
the motorcycle that, if not correctly
repaired, may cause a second accident
which could result in serious injury or
death.
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, radiator, exhaust
system, rear suspension unit and
brakes 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, refer to the How
to Ride the Motorcycle section of this
Owner's Handbook.
Failure to follow the advice above
could result in damage to property,
serious injury or death.

SAFETY FIRST 11
Riding
DANGER
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, leading to loss of motorcycle
control which will result in serious
injury or death.
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.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.
WARNING
Always ride defensively and wear
the protective equipment mentioned
elsewhere in this Safety First section.
Remember, in an accident, a
motorcycle does not give the same
impact protection as a car.
Failure to follow the advice above
could result in serious injury or death.
WARNING
This motorcycle should be operated
within the legal speed limits for the
particular road traveled.
Riding a motorcycle at high speeds
can be dangerous since the time
available to react to a hazard is
greatly reduced at high speeds.
Always reduce speed in potentially
hazardous driving conditions such as
bad weather or heavy traffic.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.

SAFETY FIRST
12
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 affect the handling,
stability or other aspect of the
motorcycle operation.
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.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.
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.

SAFETY FIRST 13
Handlebars and Footrests
WARNING
The rider must maintain control of the
motorcycle by keeping hands on the
handlebars at all times.
The handling and stability of a
motorcycle will be affected if the
rider removes their hands from the
handlebars.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.
WARNING
The rider and passenger (if applicable)
must always use the footrests
provided, during operation of the
motorcycle.
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.
Failure to follow the advice above
may lead to loss of motorcycle control
which could result in serious injury or
death.
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 lead
to loss of motorcycle control which
could result in serious injury or death.
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
- Weather.
Banking to an unsafe angle may lead
to loss of motorcycle control which
could result in serious injury or death.
WARNING
Always replace the bank angle
indicators before they are worn to
their maximum limit.
Use of a motorcycle with bank angle
indicators worn beyond the maximum
limit will allow the motorcycle to be
banked to an unsafe angle.
Banking to an unsafe angle may lead
to loss of motorcycle control which
could result in serious injury or death.

SAFETY FIRST
14
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.
We recommend accessories and
conversions be completed by
a competent person with the
specialist knowledge and technical
understanding of motorcycles, such as
an authorized Triumph 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
affect the handling, stability or other
aspect of the motorcycle operation,
leading to loss of motorcycle control
which could result in serious injury or
death.
Triumph does not accept any liability
whatsoever for defects caused by the
installation of non-approved parts,
accessories or conversions.
Triumph does not accept any liability
whatsoever for defects caused by the
incorrect installation of approved parts,
accessories or conversions.

SAFETY FIRST 15
This page intentionally left blank

WARNING LABELS
16
Speed 400 shown
Left Hand Side
NOTICE
The labels detailed on this and the following pages draw your attention to
important safety information in this handbook. Before riding, make sure that you
have understood and complied with all the information to which these labels relate.
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
6 5
123
R.P.M.
www.triumphmotorcycles.co.uk/handbooks
4
1. Headlight (page 133)
2. Breaking-In (page 63)
3. Unleaded Fuel (page 48) and Helmet
(page 08)
4. Owner's Handbook Download Details
(under seat)
5. Daily Safety Checks (page 64)
6. Coolant - Expansion Tank Cap (page 95)

WARNING LABELS 17
Right Hand Side
NOTICE
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.
MIN
12
5
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
3
4
NEVER OPEN HOT
PRESSURISED
SYSTEM
1.4 bar
1. Engine Oil (page 89)
2. E5 and E10 Fuel (if equipped) (page 48)
3. Bar End Mirrors (if equipped) (page 113)
4. Coolant - Radiator Filler Cap (page 95)
5. Tires (page 121) and Drive Chain
(page 101)

PARTS IDENTIFICATION
18
Speed 400
Left Hand Side
3
4
5
6
891112131 41 6 17
7
15
2
1
10
1. Front turn signal
2. Headlight
3. Clutch lever
4. Battery (under seat)
5. Rear/brake light
6. License plate light
7. Rear turn signal
8. Rear brake disc
9. Rear brake caliper
10. Rear suspension unit
11. Side stand
12. Gear shift pedal
13. Coolant expansion tank
14. Coolant expansion tank cap
15. Horn
16. Front brake caliper
17. Front brake disc

PARTS IDENTIFICATION 19
Right Hand Side
MIN
12
3
5
4
6
8910111213 7
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. Radiator
8. Oil filler plug
9. Oil level sight glass
10. Rear brake pedal
11. Rear brake fluid reservoir
12. Drive chain
13. Muffler

PARTS IDENTIFICATION
20
Scrambler 400 X
Left Hand Side
3
4
5
6
891112131 41 6 17
7
15
2
1
10
1. Front turn signal
2. Headlight
3. Clutch lever (behind handguard)
4. Battery (under seat)
5. Rear/brake light
6. License plate light
7. Rear turn signal
8. Rear brake disc
9. Rear brake caliper
10. Rear suspension unit
11. Side stand
12. Gear shift pedal
13. Coolant expansion tank
14. Coolant expansion tank cap
15. Horn
16. Front brake caliper
17. Front brake disc