Roots Lumberjack Chainsaw with AH-81 engine

[sawnami]

Left one is a Barker Super C80, right one is a Mono 7. I'd have to get my David Bradley down from the wall to see what it has.

Sent from my SM-N950U using Tapatalk

 

[sawnami]

There should be an aluminum tag attached by a case screw beside the reed valve port in the case. Those numbers might help.

Sent from my SM-N950U using Tapatalk

 

[TRTermite]

Clockwise from top:
HL141 off a Homelite C5, .8” bore
HL261 for a Homelite 2100, 1” bore
Stihl 070/090, 1” bore
HC11 off Clinton D-45, .8” bore

4 barrel carb system Do you have a picture of the breather and intake manifold?

 

[cpr]

More pics of the intake into the case. The filter is the factory foam one still.

 

[Chris Doherty]

Thank you cpr.

Well, Im missing the both adapters on both sides of the carb. That sucks.

 

[cpr]

Check on vintage kart forums or search just Power Products AH81 engine. They aren't an especially rare powerplant. The manifolds from the carb into the case should be fairly easy to come by. The elbow in front of the carb, if you are comfortable with brazing or welding, could probably be replicated with out too much difficulty.

 

[46 Poulan]

That is soo cool!

Let’s drag Steve into this. [emoji48] I want the saw just for the cool logo and I dig the old magnesium!!!

@sawnami

 

[Chris Doherty]

Jackpot!

Carburetor Found!

It is a HL66A

 

[Chris Doherty]

I will resurrect this saw!

 

[Bobby Kirbos]

No carb help, but I find the data plate comical. "Remove carbon from muffler and exhaust holes every 50 hours."

Data plates on today's saws, "Compliance period: 50 hours"

I know the difference, I just think it's symbolic of the time we live in (which would be a discussion for a thread in a different sub-forum).
Old school, maintain it, keep it running, fix it when it breaks. Now, when it breaks, throw it away and get a new one.

 

[Chris Doherty]

I put everything back together and was able to get it started for a few seconds and then died and now she lost spark. I cleaned the points before starting as you can see in the attached pic. The saw had great spark before starting and now nothing.

I have no idea where to go from here. Is it possible that there is a replacement ignition system I could get for this?

Any help for the Tecumseh AH81 experts?

 

[leeha]

Did you physically take the points out and clean them. Did you clean them with that dollar bill or
gap them with it. Either way that is wrong. I always take the points out and sand them on a piece
of glass with 400 grit wet dry paper then 800 grit then 1000 grit. Reinstall them and gap to .020.

 

[buzz sawyer]

Love to see success stories like this. This may also qualify for the YOU SUCK thread.

Hopefully we'll see a video of it running before long?

 

[wcorey]

Try swapping out the condenser, any automotive/small engine one will likely do...

 

[Chris Doherty]

I gaped to .020 and the points looked clean, so I used the dollar bill to semi-polish them b/c that's all I had at the time. I know that's probably not the proper way to do it but could that actually be the problem? I didn't want to take it that far apart in fear of damaging the old 50yr old plastic. I really don't know all that much about point systems. The strange thing is that I had good spark up until it ran for a few seconds and then....nothing no spark. Everything still looks good to me.

I bought a vintage old stock condenser off of fleabay since it was available. I hope that it fixes the problem!

I hope that the Coil is not the problem as I cant find a model number on it. I don't know if there is a way to test any of the parts. I cant find anything on the Repco F-2120 as far as assembly replacements either.


Does anyone have any ideas where I could find replacement parts? Or anything else I could try?

Thanks for all the help!
Chris

 

[buzz sawyer]

Do the magnets in the flywheel feel strong? I like to spray some electrical parts cleaner on the points. As long as you see shiny metal on the contacts they should be fine.

 

[67L36Driver]

REPCO is same as Phelon or Wico.

Looks very much like the one used on Homelite C-5 types.

 

[sawnami]

There's a coil in this group of parts.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/132833113686

The Power Products/Tecumseh part number is 610-371.

Sent from my SM-N950U using Tapatalk

 

[Chris Doherty]

REPCO is same as Phelon or Wico.

Looks very much like the one used on Homelite C-5 types.

Do you know the model numbers that will work on a Tecumseh AH-81 ?

There's a coil in this group of parts.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/132833113686

The Power Products/Tecumseh part number is 610-371.

Sent from my SM-N950U using Tapatalk

Unfortunately I dont this ebay Coil looks anything like mine. I dont know how it would bolt on or work

 

[Chris Doherty]

Do the magnets in the flywheel feel strong? I like to spray some electrical parts cleaner on the points. As long as you see shiny metal on the contacts they should be fine.

Magnets seem fine as they pull a screw-diver from a half inch away. Also cleaned with electrical cleaner but still nothing.

It really sucks taking this thing apart over and over.

Im guessing this will just become a wall hanger sooner than I wanted. Just would love to see this thing run again.