Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Cylinder floods? And you have good spark. Fuel mix 40/50-1, new fuel. That would make me think compression may be low, do you have a compression tester to check compression? Needs to be well over 120 psi. When did the last run?
Fuel is fresh?
You say plugs are wet? If plugs are wet, and you have spark, what kind of fuel are you using? A premix or mixing your own?
I don't know, seems like it is fuel related. I would try a quart of the premix, just to try something else. Maybe the unleaded gas is problem.
OK, let me opt out and see if someone else can help.
Hello,, if the carb is flooding it will fill the crankcase with gas. Try this, remove the plug and with the switch in off position turn saw upside down and pull the rope several times to see if it blows out fuel. Dry off the plug and try to start without priming or choking. Just the throttle last or squeezed trigger.
If fuel does come out and saw starts run til it clears up and let sit overnight to see if case fills with fuel again indicating a carb problem.
Did you try starting saw like mentioned above? Did you use pressure tester on the carb to see if leaking? Is there fuel in the crankcase again?
If the saw sits overnight does the crankcase fill up again? Were you able to start the saw after being upside down?
Remove the muffler and shine a light to look at the piston and make sure the rings are free and there aren't any scratches Even though you have 120 psi (which meets specs) there could be internal damage. I replaced many,many pistons and cylinders when covered by store warranty or repair agreement.
Did you remove the plug again after sitting overnight and turn upside down again and pull rope?
Did gas come out again?
Try starting with the throttle latch on-no choke and no priming
That's normal with the bearings, they pull right off. Did you see any scratches or scoring at all? If the RTV seal between crankcase wasn't good it would suck air and not start. Also check the carb adapter for cracks or bad gaskets
I just use a screwdriver to scrape the carbon off. Is the piston ring free?
I'm running out of ideas. Is the flywheel ok?
The key(way) isn't sheared ? It would be out of time
The portion of fuel line inside the tank is not stiff or rotted and the fuel filter is still connected to it?
I don't know what else to check. Not seeing it for myself doesn't help. Re seal the c/case and see what happens
The inner race turns? Did you check for play in the crank before disassembling the saw?