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250 SX 2019
KTM 250 SX 2019 User Manual
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TECHNICA
L
DATA
21
137
21.3.4
250
XC
US
Carburetor
type
MIKUNI
TMX
38
Carburetor
identification
number
TMX
38
85
Needle
position
2nd
position
from
top
Jet
needle
6BFY43
‑
75
(6BFY42
‑
75)
Main
jet
470
(450,
460,
480)
Idling
jet
35
(30/32.5)
Starting
jet
80
Needle
jet
S
‑
4
Idle
air
adjusting
screw
Open
2
turns
21.3.5
Carburetor
tuning
(250
XC
US)
403173-01
M/FT
ASL
Sea
level
TEMP
Temperature
ASO
Idle
air
adjusting
screw
open
138
140
Table of Contents
Default Chapter
4
Table of Contents
4
1 Means of Representation 1
7
Symbols Used
7
Formats Used
7
2 Safety Advice
8
Use Definition - Intended Use
8
Misuse
8
Degrees of Risk and Symbols
9
Tampering Warning
9
Safe Operation
9
Protective Clothing
10
Work Rules
10
Environment
10
Owner's Manual
11
3 Important Notes
12
Manufacturer and Implied Warranty
12
Operating and Auxiliary Substances
12
Spare Parts, Accessories
12
Service
12
Figures
12
Customer Service
12
4 View of Vehicle
14
View of Vehicle, Front Left (Example)
14
View of Vehicle, Rear Right (Example)
15
5 Serial Numbers
16
Chassis Number
16
Type Label
16
Engine Number
16
Fork Part Number
16
Shock Absorber Article Number
17
6 Controls
18
Clutch Lever
18
Hand Brake Lever
18
Throttle Grip
18
Kill Switch
18
Electric Starter Button (All XC Models)
19
Opening the Filler Cap
19
Closing the Filler Cap
20
Fuel Tap (All SX Models)
21
Fuel Tap (All XC Models)
21
Choke
22
Shift Lever
22
Kick Starter
23
Foot Brake Lever
23
Plug-In Stand (All SX Models)
23
Side Stand (All XC Models)
24
Service Hour Counter
24
7 Preparing for Use 7
25
Advice on First Use
25
Running in the Engine
26
Preparing the Vehicle for Difficult Operating Conditions
26
Preparing Vehicle for Rides on Dry Sand
27
Preparing Vehicle for Rides on Wet Sand
28
Preparing Vehicle for Rides on Wet and Muddy Circuits
29
Preparing Vehicle for High Temperatures or Slow Riding
30
Preparing Vehicle for Low Temperatures or Snow
31
8 Riding Instructions
32
Checks and Maintenance Measures When Preparing for Use
32
Starting
32
Starting off
33
Shifting, Riding
34
Applying the Brakes
34
Stopping, Parking
35
Transporting
35
Refueling
36
9 Service Schedule
38
Additional Information
38
Required Work
38
Recommended Work
39
10 Tuning the Chassis 10
41
Checking the Basic Chassis Setting with the Rider's Weight
41
Air Suspension AER 48
41
Compression Damping of the Shock Absorber
42
Adjusting the Low-Speed Compression Damping of the Shock Absorber
42
Adjusting the High-Speed Compression Damping of the Shock Absorber
43
Adjusting the Rebound Damping of the Shock Absorber
44
Measuring the Rear Wheel Dimension Unloaded
44
Checking the Static Sag of the Shock Absorber
45
Checking the Riding Sag of the Shock Absorber
46
Adjusting the Spring Preload of the Shock Absorber
46
Adjusting the Riding Sag
47
Checking the Basic Setting of the Fork
48
Adjusting the Fork Air Pressure
49
Adjusting the Compression Damping of the Fork
50
Adjusting the Rebound Damping of the Fork
51
Handlebar Position
51
Adjusting the Handlebar Position
52
11 Service Work on the Chassis
54
Raising the Motorcycle with a Lift Stand
54
Removing the Motorcycle from the Lift Stand
54
Bleeding the Fork Legs
55
Cleaning the Dust Boots of the Fork Legs
55
Removing the Fork Legs
56
Installing the Fork Legs
56
Removing the Fork Protector
57
Installing the Fork Protector
57
Removing the Lower Triple Clamp
57
Installing the Lower Triple Clamp
58
Checking the Play of the Steering Head Bearing
60
Adjusting the Steering Head Bearing Play
61
Lubricating the Steering Head Bearing
61
Removing the Start Number Plate
62
Installing the Start Number Plate
62
Removing Front Fender
62
Installing Front Fender
62
Removing the Shock Absorber
63
Installing the Shock Absorber
64
Removing the Seat
66
Mounting the Seat
66
Removing the Air Filter Box Cover
67
Installing the Air Filter Box Cover
68
Removing the Air Filter
68
Cleaning the Air Filter and Air Filter Box
69
Installing the Air Filter
70
Preparing Air Filter Box Cover for Securing
70
Removing the Main Silencer
70
Installing the Main Silencer
71
Changing the Glass Fiber Yarn Filling in the Main Silencer
71
Removing the Fuel Tank
72
Installing the Fuel Tank
73
Checking the Chain for Dirt
75
Cleaning the Chain
75
Checking the Chain Tension
76
Adjusting the Chain Tension
76
Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide
77
Checking the Frame
80
Checking the Swingarm
80
Checking the Throttle Cable Routing
80
Checking the Rubber Grip
81
Adjusting Basic Position of Clutch Lever
82
Checking/Correcting the Fluid Level of the Hydraulic Clutch
82
Changing the Hydraulic Clutch Fluid
83
12 Brake System 12
85
Checking the Free Travel of the Hand Brake Lever
85
Adjusting the Basic Position of the Hand Brake Lever
85
Checking the Brake Discs
85
Checking the Front Brake Fluid Level
86
Adding Front Brake Fluid
87
Checking the Front Brake Linings
88
Changing the Front Brake Linings
88
Checking the Free Travel of Foot Brake Lever
91
Adjusting the Basic Position of the Foot Brake Lever
91
Checking the Rear Brake Fluid Level
92
Adding Rear Brake Fluid
92
Checking the Brake Linings of the Rear Brake
94
Changing the Rear Brake Linings
94
13 Wheels, Tires 13
97
Removing the Front Wheel
97
Installing the Front Wheel
98
Removing the Rear Wheel
98
Installing the Rear Wheel
99
Checking the Tire Condition
101
Checking the Tire Air Pressure
101
Checking Spoke Tension
102
14 Electrical System 14
103
Removing the Battery (All XC Models)
103
Installing the Battery (All XC Models)
103
Recharging the Battery (All XC Models)
104
Changing the Main Fuse (All XC Models)
106
15 Cooling System 15
107
Checking the Antifreeze and Coolant Level
107
Checking the Coolant Level
108
Draining the Coolant
109
Refilling with Coolant
110
16 Tuning the Engine
112
Checking the Play in the Throttle Cable
112
Adjusting the Play in the Throttle Cable
112
Carburetor Setting
113
Carburetor - Idle
115
Carburetor - Adjusting the Idle Speed
116
Plug-In Connector of Ignition Timing Map Adjustment
117
Changing the Ignition Timing Map
118
Checking the Basic Position of the Shift Lever
118
Adjusting the Basic Position of the Shift Lever
118
Engine Characteristic - Auxiliary Spring
119
Engine Characteristic - Adjusting the Auxiliary Spring
119
17 Service Work on the Engine
122
Emptying the Carburetor Float Chamber
122
Checking the Gear Oil Level
123
Changing the Gear Oil
123
Adding Gear Oil
124
18 Cleaning, Care
126
Cleaning the Motorcycle
126
19 Storage
128
Preparing for Use after Storage
129
20 Troubleshooting
130
21 Technical Data
132
Engine
132
All SX Models
132
XC Us
132
XC Us
133
Engine Tightening Torques
134
All SX Models
134
All XC Models
135
Carburetor
137
All SX Models
137
Carburetor Tuning (All SX Models)
137
Carburetor - Basic Setting for Sandy Surfaces (All SX Models)
138
250 XC Us
139
Carburetor Tuning (250 XC US)
139
300 XC Us
141
Carburetor Tuning (300 XC US)
141
Capacities
142
Gear Oil
142
Coolant
142
Fuel
142
Chassis
142
Electrical System
143
Tires
143
Fork
143
Sx Eu
143
Sx Us
144
All XC Models
144
Shock Absorber
145
Sx Eu
145
Sx Us
145
All XC Models
146
Chassis Tightening Torques
147
22 Substances 22
149
23 Auxiliary Substances 23
151
24 Standards 24
153
25 List of Abbreviations
154
Index
155
4
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KTM 250 SX 2019 Specifications
General
Brand
KTM
Model
250 SX 2019
Category
Motorcycle
Language
English
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