KTM 250 SX-F USA 2010 User Manual

MAINTENANCE WORK ON CHASSIS AND ENGINE 81
13.89Glass fiber yarn filling of main silencer
The main silencer is filled with glass fiber yarn.
Over a period, the fibers of the insulating material vanish into the air, and the silencer "burns out".
Not only is the noise level higher, the performance characteristic changes.
13.90Removing main silencer
Warning
Danger of burns The exhaust system gets very hot when the vehicle is driven.
– Allow the exhaust system to cool down. Do not touch hot components.
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– Disconnect spring .
– Remove screws  and take off main silencer.
13.91Installing the main silencer
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– Mount the main silencer. Mount and tighten screws .
Guideline
Remaining screws, chassis M6 10 Nm (7.4 lbf ft)
– Reconnect spring .
13.92Removing the air filter box lid
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– Pull off the air filter box lid in area  to the side and remove to the front.
13.93Installing the air filter box lid
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– Insert the air filter box lid into the rear area  and clip it into the front area .

KTM 250 SX-F USA 2010 Specifications

General

Displacement	249.5 cc
Bore x Stroke	78 mm x 52.3 mm
Compression Ratio	13.5:1
Transmission	5-speed
Fuel System	Electronic Fuel Injection
Rear Suspension	WP Monoshock
Front Brake	260 mm disc
Rear Brake	220 mm disc
Seat Height	950 mm
Fuel Tank Capacity	7.5 Liters
Ignition	Kokusan
Front Wheel	21 Inch
Rear Wheel	19 Inch
Fuel Capacity	7.5 Liters
Engine Type	Single-cylinder, 4-stroke
Front Suspension	WP 48 mm
Engine	Single-cylinder, four-stroke
Starter	Kickstarter
Frame	Central Tube Frame Made of Chrome Molybdenum Steel Tubing