Manual KTM 250 MXC (page 113 of 153) (English)

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Repair manual KTM 250 / 300 / 380 Art No 3206004 -E

9-29C

TIGHTENING TORQUES - ENGINE

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

250 SX 250 MXC, EXC

BASIC CARBURETOR SETTING

Keihin PWK 38 AG

061200

170 (168,172)

48 (45,50)

NOZ E (NOZ F/D)

III

6,5

1,5

–

Keihin PWK 38 AG

030201

178 (175,180)

45 (48)

NOZ E (NOZ F)

6,5

1,5

–

300 MXC, EXC

Keihin PWK 38 AG

040201

175 (172,178)

45 (48)

NOZ H (NOZ I)

III

6,5

1,5

–

380 SX, MXC, EXC

Keihin PWK 38 AG

050201

170 (168,172)

45 (48)

NOZ G (NOZ H)

III

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

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KTM 250 MXC Manual

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