KTM 250 SX-F 2008 Repair Manual

Removing the camshafts
– Open the plug on the chain tensioner 1 and pull out the chain
tensioner
2.
– Discard the sealing washer on the plug and the O-ring
3 on the
chain tensioner.
– Loosen all of the screws and nuts on the upper camshaft bearing
bridge
4 and carefully remove the camshaft bearing bridge.
NOTE: the screws on the timing chain guide rail
5 have distance
bushings
6, be careful not to lose them.
– Turn the exhaust camshaft up along the timing chain and towards
the intake camshaft; take the timing chain off the camshaft gear.
– Also remove the intake camshaft; let the timing chain fall into the
timing chain compartment.
4-4
Repair manual KTM 250 -F Art.-No. 3.206.052-E
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KTM 250 SX-F 2008 Specifications

General

Engine Type	Single cylinder, 4-stroke
Displacement	249.5 cc
Compression Ratio	12.8:1
Fuel System	Keihin MX FCR 39
Starter	Kickstarter
Transmission	5-speed
Lubrication	Pressure lubrication with 2 oil pumps
Primary Drive	24:73
Final Drive	13:50
Clutch	Wet multi-disc clutch, hydraulically operated
Ignition	Kokusan
Cooling	Liquid