Starting trouble.
 

I really don't mean to be a bother, ...I have tried everything I know...static checked the timing....set valve lash....changed S/G's....checked voltage to S/G ...to + side of points....12v across the ammeter.....but when I try to crank it it hangs up then releases ..then hangs up....I believe it might be the ACR but have never checked or adjusted one....this was a good engine but I have run out of things to check....if I pull the plug, seems to turn over fine...put it back...hangs on first rotation..also, checked all contact points and made good.

Any pointers would be APPRECIATED very much.

Rick

:bigthink:

What model of Cub are you working on...??

:Huh:

Sorry 'bout that......it's a 147.....thanks for replying.

I would suggest that you check your electrical cable connections starting at the Battery and going all the way to the S/G. Make sure they are clean, polished and tight. This is for both the positive and negative (ground) cables.

Thanks Roland....will try to do that today before going to work !!!

Would the mating points where the engine contacts the frame..(4 bolts) have any effect on the "ground" . Did not check that before installing the engine.

As far as the starter turning, that would depend on where your ground wire connects. But Yes it could be.

I always say:

The three most important things to remember about the IH built Cub Cadet electrical systems are:
1.) Check and clean your grounds.
2.) Check and clean your grounds.
and
3.) Check and clean your grounds.

I know that sound like I'm being a smart a$$, but the truth is; bad grounds have been the real cause of problems from timing to carburetion. If you have a bad ground it can cause you to chase your tail and you never will get the problem solved. You would be surprised how many carburetors have been adjusted or rebuilt because of a bad ground.

SO, the other thing I always say is... 98% of all carburetor problems are electrical!

Hi Rick!

You need to determine if the ACR is working. Two ways to do it,, first is to pull the head and look at it the second is to use a dial indicator through the plug hole set on top of the valve. Pretty pricey for that type of rig so I'd just pull the head to see, and if that is not the problem you can clean things up anyways and put on a new head gasket. I'm betting against a bad ACR and would look for other things.

How long does it hang up per revolution... an instant, a half second,,, a few seconds?

Try running a jumper cable from the negative post of the battery to a clean mounting bolt on the S/G.

We will figure this out!!

Richard T....thanks for replying......thanks for covering the ACR...which was the issue in my post....thought I covered I checked all connections, but still worth doing again. It hangs up and holds for about 3-4 seconds then turns again to answer your question.

Will check the engine with the head off to watch the ACR....pretty sure it's something simple but when your simple-minded , things are easy to miss.

Thanks again for responding to my question and issue.

How do the brushes and commutator in the S/G look? How old is the battery? This may have nothing at all to do with the engine.