2008 Ktm 450 sx-f timing is off. help please.....
Posted February 08, 2009 - 04:28 PM
Posted February 09, 2009 - 09:34 AM
Crank needs to be rotated so piston is at TDC, crank needs to be indexed there.
You need to do a leak down test to see if you bent valves turning it over with cams out of time, if it leaks replace valves, if not proceed
Cams need to come out, the bolts that hold the gears on removed, gears pressed off, then put back on loose!
Reassemble, install the cam indexing tool
then tighten the bolts that hold the cams
Posted February 14, 2009 - 12:58 PM
If you do not understand the cam/head assembly, take it to your KTM tech.
If you do not have the timing tool, set the motor to TDC and use the screw to lock it. You will need a thin perfect straight edge such as a machinist scale. Place the straight edge across the cam flats and assemble the timing chain and gears. The KTM tool holds the head in time with the block. The flats must stay perfect under the straight edge. If you did not remove the cam gears, the gears will align on the chain exactly as it was before you disassembled the motor.
You should inspect your valves and make sure you did not bend anything on your previous assembly.
If this does not make sense, Take it to a KTM tech. !
Posted February 15, 2009 - 05:56 PM