I have a new piston.
I have taken the cam cover off and found tdc compression.
Before I break the timing chain. How do I lock the timing so there is no chance of the crank moving.
ktm 250 excf.
locking the timing chain
Started by gsxr1, Nov 21 2009 07:55 AM
2 replies to this topic
Posted 21 November 2009 - 07:55 AM
I have a new piston.
I have taken the cam cover off and found tdc compression.
Before I break the timing chain. How do I lock the timing so there is no chance of the crank moving.
ktm 250 excf.
Posted 28 November 2009 - 09:04 AM
Doesn't the 2007 EXC-F have the new RC4 engine (guessing your bike from earlier posts)
http://www.dirtbikew...F/engine_LG.jpg
If you have that one, there is no need to break the chain to do a top-end. There is a crank-locking bolt on the right side of the engine (the one with a thick washer)
I think the RC4 is similar to the engine the re-build here, at least when I compare it to the repair manual for the 250EXC-F
http://www.dirtrider...uild/index.html
http://www.dirtbikew...F/engine_LG.jpg
If you have that one, there is no need to break the chain to do a top-end. There is a crank-locking bolt on the right side of the engine (the one with a thick washer)
I think the RC4 is similar to the engine the re-build here, at least when I compare it to the repair manual for the 250EXC-F
http://www.dirtrider...uild/index.html
Posted 29 November 2009 - 12:12 PM
Use crank locking bolt (remove washer, reinsert bolt). Details are in the service manual. Can download on here http://www.freepdfma...e-repair-manual This is for 2003, but as far as I know the procedure is the same for the rc4 engine.
