Thanks for the reply. There is NO spark to the plug when hot, when cold there is spark and it starts right up and stays running. I've posted the problem on several message boards but with no real help. The Toro igniter module and the coil are over $150 EACH. The cheapest fix is to try a Stens megafire II spark module @ $17.00. if that doesn't solve the hot start problem I'll just have to make sure I have enough gas in the tank to finish the job before shutting off he machine. Thanks againSeeing you have not gotten any responses yet, I'll throw out a couple of ideas. From the looks it's a single stage with electronic ignition. I'd absolutely confirm you have no spark by getting it to fail and using a plug tester or a grounded plug to confirm there's not spark what-so-ever. If there's a weak spark then I'd look at the coil etc first. Make sure you're still getting gas and it's not restricted.
I'd go through what I could with an ohm meter and looking at everything for loose connections, broken wires or cold solder joints, etc.
If that all checks out ok I really don't know what to tell you. I don't know if there's a tester for the module or coil on those machines. If the machine is worth enough, may be worth paying to have a diagnostic done, if there's one available. If not then I'm sure they'll just throw parts at it and you might be able to do that also. Big concern I'd have there is if there's some clearance on a pickup or comparable, can you set it the same as it currently has?
Worst case, are parts machines available like yours at a decent price? If you found one at a decent enough price, may be able to either use parts from that one on yours or reverse to get one working unit.
Just some random thoughts. Good luck
Change the ignition coil, ignition coil other they die or act like yours when they are hot.
Sorry to bump an old thread, but doing more Reading & Research (my version of relaxing R&R) and seeing that a lot of plowing professionals really like the Toro 3650 single stage, finding it to be very effective for typical snows (as long as not too sloppy / icy / deep). One of these sounds like it would be more maneuverable and quicker for most situations that I am likely to encounter here in northern NJ.Change the ignition coil, ignition coil other they die or act like yours when they are hot.
small engine doctor