KTM 2012 250 SX-F User Manual

4
Troubleshooting: Engine
Problem
Possible Cause
Solutions
Engine
Rattling
Improper Valve
Clearance
 Adjust
Valves(pg.11)
Engine timing off
 Adjust
Timing(pg.23)
Excess Piston
Wear
 Replace piston
and rings(pg.13)
Excess Rod
Bearing Wear
 Check crank rod
bearings(pg.21)
Loss of
Power
Excess Piston
Wear
 Replace piston
and rings(pg.13)
Smoke
coming
out of
exhaust
Damaged
Cylinder
 Check and
replace Cylinder,
piston, and rings
(pg.13)
 Check oil level
Engine
will
crank
but
won’t
start
Improper Valve
Clearance
 Adjust Valves
(pg.11)
Engine timing off
 Adjust Timing
(pg.23)
Engine
won’t
turn over
Possible damaged
Piston, Cylinder,
or Crankshaft
 Check Piston
 Check Cylinder
 Check Crank

KTM 2012 250 SX-F Specifications

General

Engine Type	Single cylinder, 4-stroke
Displacement	249.91 cc
Starter	Electric starter
Transmission	5-speed
Cooling	Liquid cooled
Rear Suspension	WP Monoshock
Fuel Tank Capacity	7.5 liters
Compression Ratio	12.8:1
Bore x Stroke	76 mm x 54.8 mm
Fuel System	Keihin EFI
Frame	Central double-cradle type 25CrMo4 steel
Front Suspension	WP USD 48 mm
Front Brake	260 mm disc
Rear Brake	220 mm disc
Seat Height	992 mm
Ground Clearance	375 mm