Stihl 045AV

[babaoriley]

Got this thing few days ago. It’s hard to start. I got it started for a little bit then it bogged down. So I thought might be a good idea to clean the carb. So I did it and now it doesn’t start. I looked around for the same thread and I’ve checked everything; fuel, spark, exhaust are all good. But the I see the piston a bit scored. I don’t have compression tool, but I don’t think it’s that bad. So if the piston is not that bad then what could be the problem here? Thank you!

 

[Overlooker]

Check the flywheel key. If it's damaged, your ignition timing will be off. O

 

[Overlooker]

When you try starting it and it doesn't start, is the spark plug wet (flooded) or dry (fuel starved)? O

 

[babaoriley]

When you try starting it and it doesn't start, is the spark plug wet (flooded) or dry (fuel starved)? O

Wet flooded.

 

[babaoriley]

Check the flywheel key. If it's damaged, your ignition timing will be off. O

Flywheel has been untouched for years from the look of it. However the pull cord broke and it looks newer and aftermarket. I replaced it with an old pull cord from a 031. I put things back the way they were and cleaned the flywheel and starter with brake cleaner. It has plenty of sparks, but I’m not sure if I messed up something in the process or not. Btw I don’t think compression is the issue. When I pull, it fights back very hard, the strongest compression I feel out of all of my saws.

 

[Overlooker]

If the spark plug is wet, maybe the needle valve lever is set too high, causing too much fuel to enter the carb. Pressure/vacuum testing the carb would tell you a lot. O

 

[babaoriley]

If the spark plug is wet, maybe the needle valve lever is set too high, causing too much fuel to enter the carb. Pressure/vacuum testing the carb would tell you a lot. O

Thank you!

 

[babaoriley]

Turned out she’s fine, just the choke bracket is off and at the same time I was pulling non stop to flood the plug. Here she is running, thanks for your help again!

 

[Overlooker]

Turned out she’s fine, just the choke bracket is off and at the same time I was pulling non stop to flood the plug. Here she is running, thanks for your help again!

I'm glad you got it running. I love to see old saws get new life! O

 

[babaoriley]

I'm glad you got it running. I love to see old saws get new life! O

Thank you, me too, these 045/056 are growing on me. I want 056 mag now lol gonna sell my saws to make it happen.