Backtroller
ArboristSite Operative
My 034AV has not been run in probably 10 years. I believe it was built before 1991 since it is badged "Made in West Germany" It also has the white tank vent. I bought it at a rummage sale and only cut down a 20" silver maple with it. It was then cleaned up, removed the fluids and put on s shelf. It looks like it was not used much by the original owner either.
Well Today I wanted to run it. I checked the compression and it hit 175psi. Removed the muffler and the piston looks new. I checked the fuel line and intake boot and those all look fine. The impulse line is fairly hard. I fueled it up and after about 5 pulls she started. As long as I kept giving it gas it ran fine, let go of the gas and it would die. I increased the LA and in order to keep it from dieing I had to have the LA high enough for the chain to rotate.
I removed the carb (Zama C3S) and the only "junk" I found in it was the factory sealer used on the welch plug. It was lifted and some of it was missing. I though that was probably the problem. I cleaned the carb throughly and removed the H and L needles. The L had been about 1 1/2 turns out and the H was only about 5/8 turns out. I put them both to one turn out. The diaphragm felt fine and the gaskets were still pliable so I put it back together. The main jet still was orange tipped and had a nice shape to it. The intake side of the piston was new looking too.
The saw started fine and again I attempted to set the LA since the chain was rotating. If I stop the chain rotation it will die. Finally, I was able to stop the chain but the L was then 1 1/2 turns out so it would not die but there was a huge bog when you hit the trigger and it will die. If I have an air leak I don't want to damage it so I was done for today.
So, I am planning on replacing the fuel line, impulse line, and get a carb kit. I am also thinking possibly a new rubber intake too? I am thinking I can eliminate the fuel system/intake then. Is this a good plan?
Well Today I wanted to run it. I checked the compression and it hit 175psi. Removed the muffler and the piston looks new. I checked the fuel line and intake boot and those all look fine. The impulse line is fairly hard. I fueled it up and after about 5 pulls she started. As long as I kept giving it gas it ran fine, let go of the gas and it would die. I increased the LA and in order to keep it from dieing I had to have the LA high enough for the chain to rotate.
I removed the carb (Zama C3S) and the only "junk" I found in it was the factory sealer used on the welch plug. It was lifted and some of it was missing. I though that was probably the problem. I cleaned the carb throughly and removed the H and L needles. The L had been about 1 1/2 turns out and the H was only about 5/8 turns out. I put them both to one turn out. The diaphragm felt fine and the gaskets were still pliable so I put it back together. The main jet still was orange tipped and had a nice shape to it. The intake side of the piston was new looking too.
The saw started fine and again I attempted to set the LA since the chain was rotating. If I stop the chain rotation it will die. Finally, I was able to stop the chain but the L was then 1 1/2 turns out so it would not die but there was a huge bog when you hit the trigger and it will die. If I have an air leak I don't want to damage it so I was done for today.
So, I am planning on replacing the fuel line, impulse line, and get a carb kit. I am also thinking possibly a new rubber intake too? I am thinking I can eliminate the fuel system/intake then. Is this a good plan?
