Stihl 1127 (029/039) Repair Thread.

[Onan18]

Install the ground wires.


Flywheel back on.


Studs and gasket in place.


The mufflers on this series are very restrictive, this is one way to help things out a little.


Also trimming back on the cover to make the opening slightly bigger.

 

[Onan18]

Muffler on, I did get a third nut and washer.


Oil pump back in.


Worm gear in.


Washer on.


Clutch back on.

 

[Onan18]

Clutch drum dropped in place.


Grease the bearing.


Slide the bearing in.


Washer and clip back on.

 

[Onan18]

New fuel line and pulse line installed.


And a new fuel filter.


Recoil back on.


Pull the kill wires through.


And the pulse line.

 

[Onan18]

The handle needs to go into the top front A/V mount.


Like this.


Pull the boot through.


Reinstall the expander and route the wires.


Install the front handle.

 

[Onan18]

Time to give the carb some attention.


Here is the kit.


Was missing the strainer screen.


New one in place.


Fuel pump diaphragm on.

 

[Onan18]

Gasket on.


And the cover.


New needle and fulcrum in.


Gasket on.


And a new metering diaphragm.

 

[Onan18]

Cover plate back on.


Slide the carb in.


Install the guide and tighten the nuts.


Air filter back on.

 

[Onan18]

Air filter cover back on.


Chain sharpened, bar dressed, and it is ready for firewood season.

 

[Onan18]

Hope this proves helpful, if anyone has anything to add please feel free to do so.

 

[smokey7]

That saw seems like its had little use. Is it normal to have to reseal this series with such little use? Did it have a airleak? Or is it a prevention type of thing? Nice work you make it look so easy!!!

 

[Milkman31]

View attachment 102231
Clean the mating surfaces thoroughly, I like to resurface them on a flat plate.

View attachment 102232
Going back together with Dirko, simply because it is Stihl OEM. Hondabond works just as well.

View attachment 102233
Apply a thin layer to both sides, and oil up the cylinder.

View attachment 102234
New crank seals on, this installation tool makes life easy.

View attachment 102235
Engine back together, using nuts as spacers until the sealant sets.

At this point here is where I like to vac/psi test the engine! Great job!!

 

[Fruecrue]

I can’t believe how clean that saw is, all of your build threads in fact, great job!
We need before and after shots next time.
Pressure washer right?

 

[Keith Gandy]

Great job sir!! Very informative!

 

[Onan18]

I can’t believe how clean that saw is, all of your build threads in fact, great job!
We need before and after shots next time.
Pressure washer right?

Yes Sir, pressure washer. It is not a pleasant experience but definitely gets the job done.

 

[stihl_head1982]

You are a brave soul Joe for tackling one of these, I avoid these models like the plague, but I would feel much better now about tackling 1 now, if I had to. Great thread.

I started out on the clam shells. I remember these types of threads from AS (and the guy playing the Elvis music in the background of videos of them as well ). Maybe some of the long time AS members can help me recall -- wasn't there a clam shell tear down/reassemble competition at a get together many moons ago? The object was to see who could disassemble and reassemble one of these the fastest.

I managed to buy my first clam shell at a yard sale, the rest is history I reckon. This thread is great. After looking at the seals I wondered if you were going to replace them with the clam shell together. Did my eyes fool me or are those the "hard" seals. Great thread and great information. Clam shells are big sellers around here for homeowners and firewood cutters. Threads like this have helped me a lot on various models. Thanks for posting!

 

[Onan18]

That saw seems like its had little use. Is it normal to have to reseal this series with such little use? Did it have a airleak? Or is it a prevention type of thing? Nice work you make it look so easy!!!

This saw actually has an AM replacement piston and cylinder on it. Whoever did it used a sealant that was not fuel resistant, the entire engine pan was leaking badly.

 

[Onan18]

I started out on the clam shells. I remember these types of threads from AS (and the guy playing the Elvis music in the background of videos of them as well ). I managed to buy my first clam shell at a yard sale, the rest is history I reckon. This thread is great. After looking at the seals I wondered if you were going to replace them with the clam shell together. Did my eyes fool me or are those the "hard" seals. Great thread and great information. Clam shells are big sellers around here for homeowners and firewood cutters.

The ones I showed the Part Number for were in fact the hard ones. My Stihl dealer sent them by mistake. I exchanged them for the regular ones but didn't think to get the part number.

 

[Dub11]

The ones I showed the Part Number for were in fact the hard ones. My Stihl dealer sent them by mistake. I exchanged them for the regular ones but didn't think to get the part number.

Can you clarify what hard seals mean please?

And thanks again for the sweet build thread.

 

[Onan18]

Can you clarify what hard seals mean please?

And thanks again for the sweet build thread.

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