ATCO lightweight starting

[abelw44]

I have already stripped, cleaned and rebuilt the engine and carburettor as I bought this mower as a non-working project.

Abelw44

 

[billsmowers]

I have already stripped, cleaned and rebuilt the engine and carburettor as I bought this mower as a non-working project.

Abelw44

ok did you replace the crankshaft seals? you realty need to test the compression & test the crankcase for vacuum / pressure to see if you have any leaks as this will stop the engine running
without preforming these test you are working blind

bill

 

[abelw44]

As far as I can see, there are no crankshaft seals, and I can't see there ever having been any because the engine was attached to the mower in it's original position when I bought it. I tested the compression just roughly with my hand and there was basically nothing. I think this might be to do with the original head gasket that is sixty years old, thin, and plasticy still being attached. Is this the case?

 

[billsmowers]

OK IF YOU HAVE NO COMPRESSION YOU WILL NEVER START THE ENGINE YOU NEED TO FIND THE COMPRESSION PROBLEM BEFORE YOU CAN MOVE FORWARD AS FOR THE CRANK SEALS SOMETIMES THEY FORM PART OF THE CRANK SHAFT BEARINGS YOU WILL SEE A SEAL ON THE OUTSIDE OF THE BEARINGS BUT IF YOU DO NOT HAVE COMPRESSION THIS IS YOUR MAIN PROBLEM FOR NOW

BILL

 

[abelw44]

As far as I can see on Youtube vids and on my own engine, there are no bearings or crankcase seals. So I'm gonna make a new head gasket and see. Also, I tested the compression again and it seems I was wrong the first time it actually does have OK compression.

Thanks
Abelw44

 

[abelw44]

Hi all,
The ATCO does also leak a fair amount of fuel out of the air filter. As you have probably guessed, I am not familiar with two strokes having never worked on one before. Does anyone know what this fuel leaking business means?

Thanks
Abelw44