Got the 149 home yesterday

[_DX3_]

Let me go get a picture of the camshaft with spring and weights so you know what your looking for. BRB

[_DX3_]

Here are a couple of pictures. If the spring is not attached as it is here you should be able to reach in and slide it over the weight to reattach it. If the ACR tab is broken you will need either a new weight and tab or a good used Cam.

[Dave R]

Hey thanks so much for the pictures. That helps a lot. How close to the side of the motor case will the spring/weight side be? Is there room enough to get the spring back on with some needle nose pliers, or replace it if need be without taking the camshaft, etc. out of the block?

The manual says the mechanism is relatively fool proof and the spring is about all that goes wrong with it. I guess we'll see.
Thanks again
Dave in SW Missouri

[Dave R]

I got a visual on it now in my mind how it looks inside the engine. I see the two lifting lobes on the camshaft, so now I know where the weights and springs are relative to the whole part. I'll slip that cover off tomorrow and see what I can see in there. I hope it has just slipped off the weight.
Dave

[_DX3_]

Keeping my fingers crossed for you. I am actually amazed that spring even works, once you see it you will understand.. It is very flimsy. But then again all it has to do is keep the weights pulled in while the motor is starting. Once started, centrifugal force causes the weights to sling out thus lowering the acr tab and not keeping the valve open all the time. Pretty cool design. I am completely replacing my cam. It is good but I want one that is a bit more beefy, if you need a cam let me know.

[Dave R]

Thanks DX3 and all the friends that have answered regarding the ACR.

I appreciate all the help. Going to try tomorrow to see whats going on in there. Hope the spring can be slipped back on, we'll see.
Dave

[Dave R]

Heres where we are:
Took off the inspection plate at the cam gear with the dipstick sticking out. Turned the engine slowly to look at the gear/weights/spring assembly. The spring was in place, however, the tab was bent down. I have no idea how it got bent down, but I place a flat blade screwdriver under it and eased it back up straight. Put it back together and had compression release like it should.

A few tries with the starter and it fired up. I had overhauled the carb, but I did not have the parts to rebuild the vertical throttle shaft. It has lots of wear and is loose, even jiggles around while its running. So needless to say it did not run well and trying to adjust the jets was a waste of time with this slop in the shaft.

I did, however, idle it down slow and drove it around the yard and engaged the mower deck. Inspite of running VERY rough, it seemed to have plenty of power and ran the mower ok. It was pleased the hydrostat worked as did the lift.

So, a little more work on the carb and I think we are on the home stretch. Its been a fun and learning day for this ole man.

I'm thankful for everyones help too!
Dave

[_DX3_]

Outstanding. Glad to hear things are looking up. The throttle shaft repair is quite easy. I did one years ago and was my first one and it came out good. Keep us up to date.

[Methos]

Originally Posted by Dave R

Heres where we are:
Took off the inspection plate at the cam gear with the dipstick sticking out. Turned the engine slowly to look at the gear/weights/spring assembly. The spring was in place, however, the tab was bent down. I have no idea how it got bent down, but I place a flat blade screwdriver under it and eased it back up straight. Put it back together and had compression release like it should.

A few tries with the starter and it fired up. I had overhauled the carb, but I did not have the parts to rebuild the vertical throttle shaft. It has lots of wear and is loose, even jiggles around while its running. So needless to say it did not run well and trying to adjust the jets was a waste of time with this slop in the shaft.

I did, however, idle it down slow and drove it around the yard and engaged the mower deck. Inspite of running VERY rough, it seemed to have plenty of power and ran the mower ok. It was pleased the hydrostat worked as did the lift.

So, a little more work on the carb and I think we are on the home stretch. Its been a fun and learning day for this ole man.

I'm thankful for everyones help too!
Dave

Dave check this out for the throttle shaft problem your having.

http://cubfaq.com/throttle.html

[Dave R]

I got the 149 running today, done some carb work, had a bad time getting it to run, right, miss, die, run, miss die, etc. I finally put the old spark plug back in it and it ran of sorts. It will idle fairly well, but doesn't want to throttle up without just dying out.

Now the real problem is, if I throttle it up slow and keep messing with it to keep it from dying, it knocks bad. I suspect thats rod knock, but its loud. So I didn't run it long, figuring sooner or later something might come out the side.

I guess its time to put it aside for a while, save up some $$$ and overhaul it. Never done that, but there is no need to let that stop me.

Keep you posted.
Dave in SW Missouri