KTM MXC Automobile Parts User Manual


 
Repair manual KTM 250 / 300 / 380 Art No 3206004 -E
9-31C
TIGHTENING TORQUES
Flange bolts - cylinder-head M 8 35 Nm (25 ft.lb)
Nuts-cylinder base M 10 35 Nm (25 ft.lb)
Flywheel collar nut M 12x1 60 Nm (44 ft.lb)
Nut for primary sprocket (LH thread) M 18x1.5 Loctite 243 150 Nm (110 ft.lb)
Nut for inner clutch hub M 18x1.5 Loctite 243 100 Nm (74 ft.lb)
Crankcase and cover bolts M 6 8 Nm (6 ft.lb)
Swingarm pivot M 14 100 Nm (74 ft.lb)
Flat head bolt release plate kickstarter M 6x16 Loctite 648 19 Nm (14 ft.lb)
Other bolts M 6 10 Nm (7 ft.lb)
M 8 25 Nm (19 ft.lb)
M 10 45 Nm (33 ft.lb)
Piston fitting clearance 0.06 mm (250) 0.06 mm (300) 0.08 mm (380)
Piston ring end gap 0.3–0.4 mm
Connecting rod bearing - radial clearance
0.021–0.032 mm
Transmission shafts end float 0.1–0.2 mm
Clutch springs - length Ø 2.5 new = 43 mm, minimum length = 42 mm
TOLERANCES AND FITTING CLEARANCES
GASKET THICKNESSES
Crankcase 0.5 mm
Clutch cover 0.5 mm
Cylinder bottom gasket as required
Available cylinder bottom gaskets 0.2/0.4/0.5/0.75 mm
Cylinder-head gasket O-rings
BASIC CARBURETOR SETTING
300 EXC AUS
throttled
Keihin PWK 38 AG
070201
170 (172,168)
45 (48)
85
NOZ G (NOZ H)
II
6,5
1,5
slide stop 36mm
250 EXC USA
Keihin PWK 38 AG
030201
178 (175,180)
45 (48)
85
NOZ E (NOZ F)
IV
6,5
1,5
Carburetor
Carburetor setting number
Main jet
Idling jet
Starting jet
Jet needle
Needle position from top
Slide
Air adjustment screw open
Performance restrictor
Power jet jet
300 MXC/EXC
USA
Keihin PWK 38 AG
040201
175 (178,172)
45 (48)
85
NOZ H (NOZ I)
III
6,5
1,5
250 SX
380 SX
380 SX USA
BASIC CARBURETOR SETTING
Keihin PWK 38 AG
061200
170 (168,172)
48 (45,50)
85
NOZ E (NOZ F/D)
III
6,5
1,5
Keihin PWK 38 AG
050201
170 (168,172)
45 (48)
85
NOZ G (NOZ H)
II
6,5
1,5
250/300 EXC
throttled
Keihin PWK 38 AG
061200
175 (172,178,180)
35 (45/48)
85
R 1475 J (NOZ E/H)
III
6,5
1,5
slide stop 34mm
Carburetor
Carburetor setting number
Main jet
Idling jet
Starting jet
Jet needle
Needle position from top
Slide
Air adjustment screw open
Performance restrictor
Power jet jet