041 Super Flywheel Problem

[Bob95065]

I have a Stihl 041 that I picked up years ago. It was completely torn apart in a box. I think there was a 041 in there too but I don't remember. I tried to give it away on the Christmas thread unsuccessfuly for years so now I'm putting it together. I think I may have given some stuff away because I still have a 041 cylinder but I don't remember.


I was able to clean up the cylinder and got a new Cross piston on eBay. The Cross piston was NOS and appears to be of good quality.


I set the points and put the flywheel on it and set the timing using the mark. I torqued the flywheel and the crankshaft was very difficult to impossible to turn. I removed the flywheel and saw that it was interfering with a raised ridge on the case half. Pictures below:


Ridge interference is at shiny ring:




Different view of ridge:




Close up of flywheel. Bosch part number 0204003033



So does anyone know if the flywheels were different between the points 041 and Super? Am I doing something wrong? Why is there contact between the flywheel and case? Any help appreciated.


Thanks,


Bob

 

[Stump Shot]

1110 400 1205 is the 041FB & 041AV points
1110 400 1201 is the 041AV electronic
So, yes, everything is different between the two ignitions.
The number you have there is a Bosch number I believe.
I have a 041FB parts saw here if you need a flywheel.

 

[Bob95065]

Are you saying I have the stihl part number 1110 400 1201 flywheel which is not correct for a points saw?

 

[jacob j.]

I think the 041 service manual lists the Bosch part numbers for the points and electronic flywheels. If you could get the
service manual, then you could figure out which flywheel you have.

I had to do that years ago when sorting 045/056 magnet structures.

 

[Bob95065]

I think the 041 service manual lists the Bosch part numbers for the points and electronic flywheels. If you could get the
service manual, then you could figure out which flywheel you have.

I had to do that years ago when sorting 045/056 magnet structures.

Thanks! I'll check it out

 

[Stump Shot]

Are you saying I have the stihl part number 1110 400 1201 flywheel which is not correct for a points saw?

There were also flywheels;
1110 400 1202
1110 400 1206
1110 400 1207

There was Bosch points style, Bosch electronic and SEM ignitions for the 041, what you have going on I couldn't say other than if the glove don't fit, you must acquit.

I think the 041 service manual lists the Bosch part numbers for the points and electronic flywheels. If you could get the
service manual, then you could figure out which flywheel you have.

I had to do that years ago when sorting 045/056 magnet structures.

Bosch breaker controlled 0 204 003 033

Bosch Electronic version (MHKZ) 0 204 096007

SEM Electronic version 100 468 00

 

[Bob95065]

I think the 041 service manual lists the Bosch part numbers for the points and electronic flywheels. If you could get the
service manual, then you could figure out which flywheel you have.

I had to do that years ago when sorting 045/056 magnet structures.

I took your advice and looked at the service manual. I found this:



I circled the Bosch part number the SM called out - 0204003033. It's the same as the flywheel I have:


This flywheel also has a cam ground in the center hub. Unfortunately there is no Stihl part number on the flywheel. This flywheel is the same part # listed in the Service Manual. This leads me to my original thought - could the 041 Super take a different flywheel than the 041?

 

[Stump Shot]

I think the 041 service manual lists the Bosch part numbers for the points and electronic flywheels. If you could get the
service manual, then you could figure out which flywheel you have.

I had to do that years ago when sorting 045/056 magnet structures.

Weren't all the "Supers", o41 AV Super Electronic?

 

[Stump Shot]

This leads me to my original thought - could the 041 Super take a different flywheel than the 041?

Plausible, seems the more I look the less clear it becomes sadly.
There is another manual I see than I have, that may have the key you're looking for possibly.

 

[jacob j.]

Weren't all the "Supers", o41 AV Super Electronic?

I'm not sure but I would think so - They turned the 041 over to Electronic about the same time they did the 031/051s, but of course you never know with Stihl
in those days. They did some pretty funky stuff. I think Stihl's engineers may have discovered Cocaine long before the rest of the world.

 

[Bob95065]

I solved the problem. It may be a redneck solution but it worked.

I looked at where the interference was and I came up with a way to relieve it. I used my stationary belt sander to bring the end of the flywheel down a bit to make clearance with the case. It didn't take much and I was able to torque the flywheel nut down. I checked for spark right away and it worked. I completed assembling the saw and it started right up and ran well.

You guys may be right that the Supers had electronic ignitions, at least this one may have. The top cover says "Electronic". I may have the only one with points ignition. The box of parts only had that ignition with a brand new set of points. It may have gone with the other saw, who knows.

I put a scrappy bar on it to set the carburetor. It may be ugly but it was a fun project.

 

[lehman live edge slab]

I’m pretty sure all 041 supers were electronic and it was late 60’s early 70’s the electronic was becoming popular. I had a red and grey 041 non av that was electronic. I do have the repair manual for the really old 041 saws that I got from and old dealer. The manual came out in early 70’s so should ave all the variables listed. I also have 2 041 av supers the owner of the shop I got stuff from became a dealer in the late 50’s early 60’s. He said the 041 is one saw that shouldn’t have ever been made into a super because loose screws were common on standard size and worse on a super.

 

[av8or3]

You have answered a question I’ve had about those saws. You can convert the Electronic versions to the points style. I have an 041 magneto boxed up and ready to go should it be required. Thanks!

 

[jblnut]

Tagging onto an old thread as well ….

Anyone thing similar logic could be applied to an 048 with parts from some other saw ? I’ve got one here with a bad ignition and can’t seem to locate parts. It’s been shelved for far too long now.

 

[lehman live edge slab]

Tagging onto an old thread as well ….

Anyone thing similar logic could be applied to an 048 with parts from some other saw ? I’ve got one here with a bad ignition and can’t seem to locate parts. It’s been shelved for far too long now.

I should have the ignition parts you need, I have a few 042/048’s with Bosch and sem. Can get you a complete ignition with matching flywheel after I test for spark

 

[jblnut]

I should have the ignition parts you need, I have a few 042/048’s with Bosch and sem. Can get you a complete ignition with matching flywheel after I test for spark

That would be amazing ! I can get you pics of my flywheel and such if you’d like.

 

[lehman live edge slab]

That would be amazing ! I can get you pics of my flywheel and such if you’d like.

You can but at the very worst I can get you the whole ignition and even a rewind depending on what flywheel you have vs the whole ignition and flywheel I have. I have 5 or 6 042/0048’s so I should have a good ignition and still have what I need to build one. Your profile says central mn I live in northern mn so we might even be able to meet to get you the parts.