KTM EXC Repair Manual page 104

9-20C
TIGHTENING TORQUES - ENGINE
Flange bolts - cylinder-head
Nuts-cylinder base
Flywheel collar nut
Nut for primary sprocket (LH thread)
Nut for inner clutch hub
Crankcase and cover bolts
Swingarm pivot
Flat head bolt release plate kickstarter
Other bolts
TOLERANCES AND FITTING CLEARANCES
Piston fitting clearance
Piston ring end gap
Connecting rod bearing - radial clearance 0.021 – 0.032 mm
Transmission shafts end float
Clutch springs - length
GASKET THICKNESSES
Crankcase
Clutch cover
Cylinder bottom gasket
Available cylinder bottom gaskets
Cylinder-head gasket
BASIC CARBURETOR SETTING
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
250 SX 250 MXC, EXC
Keihin PWK 38 AG PJ Keihin PWK 38 AG
010300
172 (170,175) 178 (175,180)
48 (45,50)
85
NOZ E (NOZ F) NOZ G (NOZ H)
III
7
1,5
–
55
M 8
M 10
M 12x1
M 18x1.5 Loctite 243 150 Nm (110 ft.lb)
M 18x1.5 Loctite 243 100 Nm
M 6
M 14
M 6x16 Loctite 648 19 Nm
M 6
M 8
M 10
0.06 mm (250) 0.06 mm (300) 0.08 mm (380)
0.3 – 0.4 mm
0.1 – 0.2 mm
Ø 2.5 new = 43 mm, minimum length = 42 mm
0.5 mm
0.5 mm
as required
0.2/0.4/ 0.5 / 0.75 mm
O-rings
300 MXC, EXC
Keihin PWK 38 AG
030300 050300
175 (172,178)
45 (48) 45 (48)
85 85
NOZ H (NOZ I)
IV III
6,5 6,5
1,5 1,5
– –
– –
35 Nm (25 ft.lb)
35 Nm (25 ft.lb)
60 Nm (44 ft.lb)
(74 ft.lb)
8 Nm (6 ft.lb)
100 Nm (74 ft.lb)
(14 ft.lb)
10 Nm (7 ft.lb)
25 Nm (19 ft.lb)
45 Nm (33 ft.lb)
380 SX, MXC, EXC
Keihin PWK 38 AG
070300
170 (168,172)
45 (48)
85
NOZ G (NOZ I/NOZ H)
III
6,5
1,5
–
–