Thread: Attn: Bob L Re Chain Saw Service

Originally Posted by chambezio

Hi Bob and others
As promised here is an update of the surgery my mate and I did on 2 Baumr Ag 62cc saws.
We pulled out and cleaned the filter in the tank on the suction line to the carbi.Put one back together and... ran very well, and stopped and was started easy. But the other one.....would not start. we swapped carbis and the first one went as good as it had with its original carbi, so its not the carbi. We have spark. When we pulled the feed line off the carbi the second saw had pressure in that line after a number of pulls trying to start it.(the first saw did not have this build up of pressure. There is another line going off the carbi which we suspect is the vent to the tank but this line is clear of any obstruction.

The next thing I would suggest is a crank case pressure test.

i would sum it up and say for the price of these saws you get what you pay for TROUBLE

sounds like a leek in sump or lo compresion.

There is one of these saws in the local tip shop,runs but has no chain,bar is badly bered.I ges the olier shat it hens the bar and no chain.,Is i werth picking up.Are th oilers hard to fix?and the price of chain?.Would it be wouth it as they are only $150.

Originally Posted by eli szoko

sounds like a leek in sump or lo compresion.

If you look hard I heard you can sometimes see the green tips growing out of the exhaust

It coming from China, it's probably full of pesticides.

Chambezio

The second line from the carb is the impulse pipe, which operates the diaphragm pump by transmitting pulses from varying crankcase pressure. If this is leaking, or is blocked (perhaps in the crankcase) then the carb will not pump fuel. Does the saw fire and then die if you put a few drops of fuel in the inlet (which would indicate this may be the problem)? If you disconnect the impulse line at the carb and turn the engine over can you feel any pulses from it?

Cheers

Si

Originally Posted by eli szoko

There is one of these saws in the local tip shop,runs but has no chain,bar is badly bered.I ges the olier shat it hens the bar and no chain.,Is i werth picking up.Are th oilers hard to fix?and the price of chain?.Would it be wouth it as they are only $150.

who was the idiot that took it out of the tip it was in its place

I gues that you are sugesting its not werth it Hahaha.

Rod, it'd be frustrating to have one working and the other not and have done just about everything to both of them. It'd be the kind of thing regardless of what it cost I'd wanna find out why if the saw was some expensive big brand one or some cheaper no name saw - just frustrating