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125 SX 2023
KTM 125 SX 2023 User Manual
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11
SERVICE
WORK
ON
THE
CHASSIS
60
11.20
Removing
the
seat
S05350-10
–
Remove
screw
1
.
S05493-10
–
Raise
seat,
pull
it
toward
the
fuel
tank
and
take
it
off.
11.21
Mounting
the
seat
S05495-10
–
Attach
the
seat
to
the
collar
bushings
at
the
front
and
simulta-
neously
push
it
back.
The
holding
lugs
engage
in
the
recesses
at
the
back.
–
Make
sure
the
seat
is
latched
in
place
correctly.
S05350-10
–
Mount
and
tighten
screw
1
.
Guideline
Screw,
seat
fixing
M6
8
Nm
(5.9
lbf
ft)
61
63
Table of Contents
Table of Contents
4
Means of Representation 1
7
Symbols Used
7
Formats Used
7
Safety Advice
8
Use Definition - Intended Use
8
Misuse
8
Degrees of Risk and Symbols
8
Tampering Warning
9
Safe Operation
9
Protective Clothing
9
Work Rules
10
Environment
10
Owner's Manual
10
Important Notes 3
11
Manufacturer Warranty, Implied Warranty
11
Fuel, Auxiliary Substances
11
Spare Parts, Technical Accessories
11
Service
11
Figures
11
Customer Service
11
View of Vehicle
12
View of Vehicle, Front Left (Example)
12
View of Vehicle, Rear Right (Example)
13
Serial Numbers
14
Vehicle Identification Number
14
Type Label
14
Engine Number
14
Fork Part Number
14
Shock Absorber Article Number
15
Controls
16
Clutch Lever
16
Hand Brake Lever
16
Throttle Grip
17
Stop Button
17
Start Button
18
Combination Switch
18
Overview of Indicator Lights (125 SX EU)
18
Overview of Indicator Lights (125 XC US)
19
Combination Instrument
19
Opening the Fuel Tank Filler Cap
19
Closing the Fuel Tank Filler Cap
20
Cold Start Button
21
Idle Speed Adjusting Screw
21
Shift Lever
22
Foot Brake Lever
22
Plug-In Stand (125 SX EU)
22
Side Stand (125 XC US)
23
Preparing for Use
24
Advice on Preparing for First Use
24
Running in the Engine
25
Starting Power of Lithium-Ion Batteries at Low Temperatures
26
Preparing the Vehicle for Difficult Operating Conditions
26
Preparing the Vehicle for Rides on Dry Sand
27
Preparing the Vehicle for Rides on Wet Sand
27
Preparing the Vehicle for Rides on Wet and Muddy Circuits
28
Preparing Vehicle for High Temperatures or Slow Riding
28
Preparing the Vehicle for Low Temperatures or Snow
29
Riding Instructions
30
Checks and Maintenance Measures When Preparing for Use
30
Starting the Vehicle
30
Starting off
31
Shifting, Riding
32
Braking
32
Stopping, Parking
33
Transporting
33
Refueling
34
Service Schedule
36
Additional Information
36
10 Tuning the Chassis
38
Checking the Basic Chassis Setting with Rider's Weight
38
Compression Damping of the Shock Absorber
38
Adjusting the Low-Speed Compression Damping of the Shock Absorber
38
Adjusting the High-Speed Compression Damping of the Shock Absorber
39
Adjusting the Rebound Damping of the Shock Absorber
40
Measuring the Dimension of the Rear Wheel Unloaded
40
Checking the Static Sag of the Shock Absorber
41
Checking the Riding Sag of the Shock Absorber
41
Adjusting the Spring Preload of the Shock Absorber
42
Adjusting the Riding Sag
43
Air Suspension XACT
44
Checking the Basic Setting of the Fork
44
Adjusting the Fork Air Pressure
45
Adjusting the Compression Damping of the Fork
46
Adjusting the Rebound Damping of the Fork
46
Handlebar Position
47
Adjusting the Handlebar Position
48
11 Service Work on the Chassis
50
Raising the Motorcycle with a Lift Stand
50
Removing the Motorcycle from the Lift Stand
50
Bleeding the Fork Legs
51
Cleaning the Dust Boots of the Fork Legs
51
Removing the Fork Protector
52
Installing the Fork Protector
52
Removing the Fork Legs
52
Installing the Fork Legs
53
Removing the Lower Triple Clamp
53
Installing the Lower Triple Clamp
54
Checking Steering Head Bearing Play
56
Adjusting Steering Head Bearing Play
57
Lubricating the Steering Head Bearing
57
Removing the Start Number Plate
58
Installing the Start Number Plate
58
Removing Front Fender
58
Installing the Front Fender
59
Removing the Shock Absorber
59
Installing the Shock Absorber
60
Removing the Seat
62
Mounting the Seat
62
Removing the Frame Protector
63
Installing the Frame Protector
63
Removing the Engine Guard (125 XC US)
63
Installing the Engine Guard (125 XC US)
64
Removing the Air Filter Box Cover
64
Installing the Air Filter Box Cover
65
Removing the Air Filter
67
Cleaning the Air Filter and Air Filter Box
67
Installing the Air Filter
68
Preparing Air Filter Box Cover for Securing
69
Removing the Main Silencer
69
Installing the Main Silencer
69
Changing the Glass Fiber Yarn Filling in the Main Silencer
70
Removing the Fuel Tank
70
Installing the Fuel Tank
72
Checking the Chain for Dirt
73
Cleaning the Chain
73
Checking the Chain Tension
74
Adjusting the Chain Tension
75
Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide
76
Checking the Frame
78
Checking the Link Fork
78
Checking the Throttle Cable Routing
78
Checking the Rubber Grip
79
Adjusting the Basic Position of the Clutch Lever
80
Checking/Correcting the Fluid Level of the Hydraulic Clutch
80
Changing the Hydraulic Clutch Fluid
81
Brake System 12
83
Checking the Free Travel of the Hand Brake Lever
83
Adjusting the Basic Position of the Hand Brake Lever
83
Checking the Brake Discs
83
Checking the Front Brake Fluid Level
84
Adding Front Brake Fluid
85
Checking that the Brake Linings of the Front Brake Are Secured
86
Changing the Brake Linings of the Front Brake
87
Checking the Free Travel of Foot Brake Lever
89
Adjusting the Basic Position of the Foot Brake Lever
89
Checking the Rear Brake Fluid Level
90
Adding Rear Brake Fluid
91
Checking that the Brake Linings of the Rear Brake Are Secured
92
Changing the Rear Brake Linings
92
Wheels, Tires 13
95
Removing the Front Wheel
95
Installing the Front Wheel
96
Removing the Rear Wheel
96
Installing the Rear Wheel
97
Checking the Tire Condition
99
Checking Tire Pressure
99
Checking Spoke Tension
100
Cooling System 14
101
Checking the Antifreeze and Coolant Level
101
Checking the Coolant Level
102
Draining the Coolant
102
Refilling with Coolant
103
Changing the Coolant
105
Electrical System 15
107
Removing the 12-V Battery
107
Installing the 12-V Battery
108
Charging the 12-V Battery
109
Changing the Main Fuse
110
Changing the Fuse of the Fuel Pump
111
Diagnostics Connector
112
Exhaust Control 16
113
Programming the End Positions of the Exhaust Control
113
Tuning the Engine 17
115
Changing the Mapping
115
Checking the Play in the Throttle Cable
115
Adjusting the Play in the Throttle Cable
116
Adjusting the Idle Speed
117
Checking the Basic Position of the Shift Lever
117
Adjusting the Basic Position of the Shift Lever
118
Service Work on the Engine 18
119
Changing the Fuel Screen
119
Checking the Gear Oil Level
120
Changing the Gear Oil
120
Adding the Gear Oil
121
Cleaning, Care 19
123
Cleaning the Motorcycle
123
Storage 20
125
Preparing for Use after Storage
126
Troubleshooting 21
127
Blink Code 22
129
Technical Data 23
131
Engine
131
Engine Tightening Torques
131
Capacities
133
Gear Oil
133
Coolant
133
Fuel
133
Chassis
133
Electrical System
134
Tires
134
Fork
134
Sx Eu
134
XC Us
135
Shock Absorber
135
Sx Eu
135
XC Us
136
Chassis Tightening Torques
137
24 Substances
140
25 Auxiliary Substances
142
26 Standards
144
Index of Special Terms 27
145
28 List of Abbreviations
146
List of Symbols 29
147
Yellow and Orange Symbols
147
Green and White Symbols
147
Index
148
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Setup Instructions
25 pages
4
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KTM 125 SX 2023 Specifications
General
Brand
KTM
Model
125 SX 2023
Category
Motorcycle
Language
English
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