157QMJ stock camshaft By jomama0867 (Read 515 times)

[jomama0867]

Can someone help me identify this part and what it does (or doesn't do)? I recently invested in a BBK (63mm) and the kit included an A9 camshaft, but the part circled is missing. Does this mean I will have to remove the bearing(s) and switch it to the new camshaft? See photos:

[jerryscript]

Looks like a cam stopper, which is supposed to prevent the motor from spinning backwards in the event of kickback during starting. It is not a "required" component, more of an engine saftey feature.

[jomama0867]

Yeah, jerryscript, that's kinda what I figured too, but then there is this (see pics)! This spring-loaded wheel reacts every revolution, but as far as I can tell it's not connected to anything electrical OR mechanical. It just "hangs" there!

[Alleyoop]

Here is the CAME STOPPER NOT all motors come with one. But for it to work the CAM has to have that prodtruding piece like in your picture. If the cam does not have it you do not need the cam stopper piece it will do nothing.
Alleyoop

Here is the cam stopper Mechanism.

[jomama0867]

Thanx, Alley! I guessed it might be something like that (but with the Chinese, WHO KNOWS)! At least now I can sleep soundly tonight knowing that tomorrow I can continue the "big build" without having to worry about "fluff"!