Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Model 42A707 1653-01
Hello all,  I can't get this thing to run off choke.

I replaced the fuel lines, fuel filter, fuel and spark plugs.  I checked compression at 120 psi in both cylinders.  Spark was checked with a plug at 0.060" gap to check power of spark and both cylinders sparked fine.  I re-gapped at 0.030.

I rebuilt the carb, blew out all passages with carb cleaner/compressed air.  I am on round 3 of tearing this down and blowing out each port.

While it is running while choked, dropplets of fuel are spraying out of the carb throat onto me and everything else in the area.  When I shut it down, I can see fuel puddled at the collector below the carb.  Plugs aren't wet.

Any suggestions?  Thanks

I got it!  The flywheel key sheared and the fw spun 90*, and I couldn't see it.  Runs like a champ now.

Thanks for everyone's help!

Awesome, glad you got it sorted out! Any idea what caused the key to shear off? In your recap of what led to this, you mentioned pulling the flywheel, but that was after the problems had started. If the key was still intact when you pulled the flywheel, was the flywheel nut torque set too low when re-installed, or something, which allowed the flywheel to spin and shear the key?

I initially pulled the flywheel to check the alternator - I kept blowing diodes.  Apparently I didn't torque the fw enough.  Rule #728: Don't forget to torque yee flywheel  :-)

cool... The fix is even cheap!

Friiy