Rebuilding a 1978 5124

[WhyZed]

This is the muffler







This model of can doesn't have a pipe or single port for the exhaust gases to exit, instead there is a series of holes drilled around the perimeter of the bowl for gases to exit. The really big rusted hole is directly under the exhaust port of the engine so it exhausts pretty well straight out. That is not good for the economy, efficiency or noise. For best 2 stroke engine power & efficiency there must be a certain amount of back-pressure there, that is why high performance 2 strokes have combustion chambers close to the engine.
I don't know if this is the stock exhaust as there were a lot of things wrong with this example.

I'm going to take my 'F's' muffler off & see if it will fit, I'm confident it will.

 

[impalass]

This is the muffler

View attachment 14714

View attachment 14715

View attachment 14716

This model of can doesn't have a pipe or single port for the exhaust gases to exit, instead there is a series of holes drilled around the perimeter of the bowl for gases to exit. The really big rusted hole is directly under the exhaust port of the engine so it exhausts pretty well straight out. That is not good for the economy, efficiency or noise. For best 2 stroke engine power & efficiency there must be a certain amount of back-pressure there, that is why high performance 2 strokes have combustion chambers close to the engine.
I don't know if this is the stock exhaust as there were a lot of things wrong with this example.

I'm going to take my 'F's' muffler off & see if it will fit, I'm confident it will.

F muffler will not fit. Second thought it should fit but i don't need the muffler that i took off the 5124.

 

[WhyZed]

You are correct Sir, the F and D mufflers are indeed very different..

F on left D on right





F inside D

 

[impalass]

You are correct Sir, the F and D mufflers are indeed very different..

F on left D on right

View attachment 14719

View attachment 14720

F inside D

View attachment 14721

If you want my muffler let me know.

 

[WhyZed]

If you want my muffler let me know.

What do you have in mind?

I am not like our good friend 'franchi' (who'd drive 300kms one way) for a fully equipped LB! :drink:
I can't drive 300 miles one away for an old rusty muffler? :confused2: :laughing:

I took mine muffler to a welder, who said, "there is not enough material left anywhere to weld anything to :frown: so yes I am indeed in need. :wink:

 

[impalass]

What do you have in mind?

I am not like our good friend 'franchi' (who'd drive 300kms one way) for a fully equipped LB! :drink:
I can't drive 300 miles one away for an old rusty muffler? :confused2: :laughing:

I took mine muffler to a welder, who said, "there is not enough material left anywhere to weld anything to :frown: so yes I am indeed in need. :wink:

I can mail it to you.

 

[WhyZed]

Well that would be just swell :drink:
I'll PM.

 

[impalass]

What type of muffler do you need. Do you have a picture of the old muffler.

Link to engine manual so can read and find out about the carb.

https://lookup3.toro.com/ttcGateway/acrobat/manuals/lball.html



Lawn-Boy Service Manual 1950-88 Complete

 

[impalass]

F muffler will not fit. Second thought it should fit but i don't need the muffler that i took off the 5124.[/QUOTE
Carb from my 5124

 

[WhyZed]

F muffler will not fit. Second thought it should fit but i don't need the muffler that i took off the 5124.[/QUOTE
Carb from my 5124

Hey impalass,

I just checked Can-Post. It is going to cost $38.15 to ship a box 12"x12"X10" tall weighing 2kg, COD..
Fedex, $11.06 -> $48 depending on the service, no COD offered without an account so I'd need to get one set up.


I'm going to pickup some stuff an hr down the road. One Buddy has a couple used mufflers there. I'll take my old one & see if he has one compatible.
Don't discard your exhaust just yet. If we do this, I do need some bolts, 2 muffler bolts, 2 deck plate bolts and the 4 bolts that hold the cowling on.

Not sure I need the carb, mine is not to bad. You don't want or need yours?

Maybe franchi could stop in and pick it up on his next mower purchase, chances are pretty good he'll be driving right by! :laughing: