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KTM
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250 SX
KTM 250 SX User Manual
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21
TECHNICA
L
DATA
120
21.3.6
Carburetor
tuning
(All
150
models)
KEIHIN PWK
38S
AG
M/FT
ASL
TEMP
-20°C ... -7°C
-2°F ... 20°F
-6°C ... 5°C
19°F ... 41°F
6°C ... 15°C
42°F ... 60°F
16°C ... 24°C
61°F ... 78°F
25°C ... 36°C
79°F ... 98°F
37°C ... 49°C
99°F ... 120°F
3.000 m
10,000 ft
2.301 m
7,501 ft
ASO
IJ
NDL
POS
MJ
1
48
N0Z F
3
182
1
45
N0Z G
3
180
2
45
N0Z G
3
180
2
45
N0Z H
3
178
2
45
N0Z H
2
178
2.300 m
7,500 ft
1.501 m
5,001 ft
ASO
IJ
NDL
POS
MJ
1,5
50
N0Z F
4
182
1
48
N0Z F
3
182
1
45
N0Z G
3
180
2
45
N0Z G
3
180
2
45
N0Z H
3
178
2
45
N0Z H
2
178
1.500 m
5,000 ft
751 m
2,501 ft
ASO
IJ
NDL
POS
MJ
1
50
N0Z E
4
185
1,5
50
N0Z F
4
182
1
48
N0Z F
3
182
1
45
N0Z G
3
180
2
45
N0Z G
3
180
2
45
N0Z H
3
178
750 m
2,500 ft
301 m
1,001 ft
ASO
IJ
NDL
POS
MJ
1
52
N0Z E
4
188
1
50
N0Z E
4
185
1,5
50
N0Z F
4
182
1
48
N0Z F
3
182
1
45
N0Z G
3
180
2
45
N0Z G
3
180
300 m
1,000 ft
0 m
0 ft
ASO
IJ
NDL
POS
MJ
1
52
N0Z E
5
188
1
52
N0Z E
4
188
1
50
N0Z E
4
185
1,5
50
N0Z F
4
182
1
48
N0Z F
3
182
1
45
N0Z G
3
180
402549-01
M/FT
ASL
Sea
level
TEMP
Temperature
ASO
Id
le
air
adjusting
screw
open
IJ
Idling
jet
NDL
Needle
POS
N
eedle
position
from
top
MJ
Main
jet
Info
Not
for
sandy
surfaces
121
123
Table of Contents
Default Chapter
4
Table of Contents
4
1 Means of Representation
7
Symbols Used
7
Formats Used
7
2 Safety Advice
8
Use Definition - Intended Use
8
Degrees of Risk and Symbols
8
Tampering Warning
8
Safe Operation
9
Protective Clothing
9
Work Rules
9
Environment
9
Owner's Manual
9
3 Important Notes
10
Guarantee, Warranty
10
Operating and Auxiliary Substances
10
Spare Parts, Accessories
10
Service
10
Figures
10
Customer Service
10
4 View of Vehicle
11
View of Vehicle, Front Left (Example)
11
View of Vehicle, Rear Right (Example)
12
5 Serial Numbers
13
Chassis Number
13
Type Label
13
Engine Number
13
Fork Part Number
13
Shock Absorber Article Number
13
6 Controls
14
Clutch Lever
14
Hand Brake Lever
14
Throttle Grip
14
Kill Switch
14
Electric Starter Button (All XC Models)
14
Opening the Filler Cap
15
Closing the Filler Cap
15
Fuel Tap (All SX Models)
16
Fuel Tap (All XC Models)
16
Choke
17
Shift Lever
17
Kick Starter
17
Foot Brake Lever
18
Plug-In Stand (All SX Models)
18
Side Stand (All XC Models)
18
7 Preparing for Use
19
Advice on First Use
19
Running in the Engine
20
Preparing the Vehicle for Difficult Riding Conditions
20
Preparing for Rides on Dry Sand
20
Preparing for Rides on Wet Sand
22
Preparing for Rides on Wet and Muddy Surfaces
23
Preparations for Riding at High Temperatures and Low Speeds
23
Preparing for Rides at Low Temperature or in Snow
24
8 Riding Instructions
25
Checks and Maintenance Work When Preparing for Use
25
Starting
25
Starting off
26
Shifting, Riding
26
Braking
27
Stopping, Parking
27
Transport
28
Refueling
28
9 Service Schedule
29
All SX Models
29
Service Work (as Additional Order)
30
All XC Models
30
Service Schedule
30
Service Work (as Additional Order)
31
10 Tuning the Chassis
32
Checking the Basic Chassis Setting with the Rider's Weight
32
Air Suspension AER 48 (125/150 SX EU)
32
Compression Damping of the Shock Absorber
33
Adjusting the Low-Speed Compression Damping of the Shock Absorber
33
Adjusting the High-Speed Compression Damping of the Shock Absorber
34
Adjusting the Rebound Damping of the Shock Absorber
35
Measuring the Rear Wheel Sag Unloaded
36
Checking the Static Sag of the Shock Absorber
37
Checking the Riding Sag of the Shock Absorber
38
Adjusting the Spring Preload of the Shock Absorber
38
Adjusting the Riding Sag
39
Checking the Basic Setting of the Fork
41
Adjusting the Fork Air Pressure (125/150 SX EU)
41
Adjusting the Compression Damping of the Fork
42
Adjusting the Rebound Damping of the Fork
43
Handlebar Position
44
Adjusting the Handlebar Position
44
11 Service Work on the Chassis
46
Raising the Motorcycle with a Lift Stand
46
Removing the Motorcycle from the Lift Stand
46
Bleeding the Fork Legs
47
Cleaning the Dust Boots of the Fork Legs
47
Removing the Fork Legs
48
Installing the Fork Legs
48
Removing the Fork Protector
49
Installing the Fork Protector
49
Removing the Lower Triple Clamp
49
Installing the Lower Triple Clamp
50
Checking the Play of the Steering Head Bearing
52
Adjusting the Steering Head Bearing Play
52
Greasing the Steering Head Bearing
53
Removing the Start Number Plate
53
Installing the Start Number Plate
54
Removing the Front Fender
54
Installing the Front Fender
54
Removing the Shock Absorber
54
Installing the Shock Absorber
56
Removing the Seat
58
Mounting the Seat
58
Removing the Air Filter Box Cover
59
Installing the Air Filter Box Cover
60
Removing the Air Filter
61
Cleaning the Air Filter and Air Filter Box
61
Installing the Air Filter
62
Securing the Air Filter Box Cover
62
Sealing the Air Filter Box
63
Disassembling the Main Silencer
63
Installing the Main Silencer
64
Changing the Glass Fiber Yarn Filling in the Main Silencer
64
Removing the Fuel Tank
65
Installing the Fuel Tank
66
Checking the Chain for Dirt
68
Cleaning the Chain
68
Checking the Chain Tension
69
Adjusting the Chain Tension
69
Checking the Chain, Rear Sprocket, Engine Sprocket, and Chain Guide
70
Checking the Frame
73
Checking the Swingarm
73
Checking the Routing of the Throttle Cable
73
Checking the Rubber Grip
74
Additionally Securing the Rubber Grip
75
Adjusting Basic Position of Clutch Lever
75
Checking/Correcting the Fluid Level of the Hydraulic Clutch
75
Changing the Hydraulic Clutch Fluid
75
12 Brake System
77
Checking the Free Travel of the Hand Brake Lever
77
Adjusting the Basic Position of the Hand Brake Lever
77
Checking the Brake Discs
77
Checking the Front Brake Fluid Level
78
Adding Front Brake Fluid
78
Checking the Front Brake Linings
79
Changing the Front Brake Linings
79
Checking the Free Travel of Foot Brake Lever
81
Adjusting the Basic Position of the Foot Brake Lever
81
Checking the Rear Brake Fluid Level
82
Adding Rear Brake Fluid
83
Checking the Rear Brake Linings
84
Changing the Rear Brake Linings
84
13 Wheels, Tires
86
Removing the Front Wheel
86
Installing the Front Wheel
86
Removing the Rear Wheel
87
Installing the Rear Wheel
88
Checking the Tire Condition
88
Checking the Tire Air Pressure
89
Checking the Spoke Tension
89
14 Electrical System
91
Removing the Battery (All XC Models)
91
Installing the Battery (All XC Models)
91
Recharging the Battery (All XC Models)
92
Change the Main Fuse (All XC Models)
93
15 Cooling System
94
Radiator Cover (All 125/150 Models)
94
Installing the Radiator Cover (All 125/150 Models)
94
Removing the Radiator Cover (All 125/150 Models)
95
Checking the Antifreeze and Coolant Level
95
Checking the Coolant Level
96
Draining the Coolant
96
Refilling with Coolant
97
16 Tuning the Engine
99
Checking the Play in the Throttle Cable
99
Adjusting the Play in the Throttle Cable
99
Carburetor - Idle
100
Carburetor - Adjusting the Idle Speed
100
Ignition Curve Plug-In Connector
101
Changing the Ignition Timing Map
102
Checking the Basic Position of the Shift Lever
102
Adjusting the Basic Position of the Shift Lever
103
Engine Characteristic - Auxiliary Spring (All 250/300 Models)
103
Engine Characteristic - Setting the Auxiliary Spring (All 250/300 Models)
103
17 Service Work on the Engine
105
Emptying the Carburetor Float Chamber
105
Checking the Gear Oil Level
105
Changing the Gear Oil
106
Draining the Gear Oil
106
Refilling with Gear Oil
107
Adding Gear Oil
108
18 Cleaning, Care
109
Cleaning the Motorcycle
109
19 Storage
110
Preparing for Use after Storage
110
20 Troubleshooting
111
21 Technical Data
113
Engine
113
All 125 Models
113
All 150 Models
113
Engine Tightening Torques
116
All 125/150 Models
116
All XC Models
117
Carburetor
119
All 125 Models
119
Carburetor - Basic Setting for Sandy Surfaces (All 125 Models)
119
Carburetor Tuning (All 125 Models)
120
All 150 Models
121
Carburetor - Basic Setting for Sandy Surfaces (All 150 Models)
121
Carburetor Tuning (All 150 Models)
122
Carburetor - Basic Setting for Sandy Surfaces (250 SX)
123
Carburetor Tuning (250 SX)
124
Carburetor Tuning (250 XC)
125
Carburetor Tuning (300 XC)
127
21.3.14 General Carburetor Tuning
128
Capacities
128
Gear Oil
128
Coolant
128
Fuel
128
Chassis
128
Electrical System
129
Tires
129
Fork
130
125/150 Sx Eu
130
125/150 Sx Us
130
Sx Us
131
All XC Models
131
Shock Absorber
132
125/150 Sx Eu
132
125/150 Sx Us
132
Sx Eu
133
Sx Us
133
All XC Models
134
Chassis Tightening Torques
134
22 Substances
136
23 Auxiliary Substances
138
24 Standards
140
25 List of Abbreviations
141
Index
142
Other manuals for KTM 250 SX
Owner's Handbook
37 pages
Setup Instructions
22 pages
4
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KTM 250 SX Specifications
General
Brand
KTM
Model
250 SX
Category
Motorcycle
Language
English
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