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
Summary of Contents for 2012 250 SX-F
Page 1: ...In Depth Engine and Fuel System Maintenance and Repair Manual 2012 KTM 250 SX F ...
Page 2: ......
Page 3: ...Jeremy Jonas December 2 2013 Denton TX ...
Page 6: ......
Page 7: ......
Page 8: ......
Page 29: ...Technical Data Engine Tightening Torques 23 Picture 2 4 KTM 87 ...
Page 30: ...24 Picture 2 5 KTM 87 ...