Tait
ArboristSite Lurker
I pulled my dad's late 70's 031av out of the shed to go to work. It has sat for a few years (empty) as I could not get it started. I figured I would get to it at some point. That time has come. Here is what I have replaced:
Rebuilt the Walbro carb (diaphragm was stiff so assumed that was the problem)
Reset high and low to 1 1/4 turns out
New fuel line from white elbow to carb
Checked impulse line and carb boot for cracks. None found
New spark plug
Pulled condenser and replaced with electronic ignition module
The saw shows the same condition as before. It will NOT start up. If I shoot a squirt of starting fluid it will fire up for a half second, but once the starting fluid flashes off then nothing. I pulled the spark plug and have spark. Also put a spark plug tester on and it too sparks. Checked the compression. It came in at 115 psi. I am assuming this is low? The spark plug hole has been coiled. Way before my time and I doubt my dad would remember when it was done.
At this point, I have a new impulse line and good used carb boot in case either of those have slight leaks. I need to get out my multimeter and check the coil for proper resistance. I need to see if I can find that number on here somewhere. Does anyone have any ideas what else could be the issue?
My next steps:
Pull coil and test
Replace piston and rings
I know I am putting a lot of effort into an older and outdated saw but it has sentimental value and I would love to get it running and cutting again. Thanks.
Rebuilt the Walbro carb (diaphragm was stiff so assumed that was the problem)
Reset high and low to 1 1/4 turns out
New fuel line from white elbow to carb
Checked impulse line and carb boot for cracks. None found
New spark plug
Pulled condenser and replaced with electronic ignition module
The saw shows the same condition as before. It will NOT start up. If I shoot a squirt of starting fluid it will fire up for a half second, but once the starting fluid flashes off then nothing. I pulled the spark plug and have spark. Also put a spark plug tester on and it too sparks. Checked the compression. It came in at 115 psi. I am assuming this is low? The spark plug hole has been coiled. Way before my time and I doubt my dad would remember when it was done.
At this point, I have a new impulse line and good used carb boot in case either of those have slight leaks. I need to get out my multimeter and check the coil for proper resistance. I need to see if I can find that number on here somewhere. Does anyone have any ideas what else could be the issue?
My next steps:
Pull coil and test
Replace piston and rings
I know I am putting a lot of effort into an older and outdated saw but it has sentimental value and I would love to get it running and cutting again. Thanks.