Solsun, You mention two different carb numbers, but assuming typos you got the 640349 on there (you typed 640039 in one post). That kind of farting and the 60 compression would have me checking the head gasket and valve clearance, but 60 can be be OK. The way it is intermittent in the "trouble in paradise" video sure seems electrical, though. Have you had the recoil shroud off? It may be worth it to check for a bad flywheel key for giggles, but look for a nest or something playing around with the kill wire from the coil. Usually if it's a bad head gasket or long valve it's consistent. IE it runs vrrrroooom and soon as it hits a load it dies . Your's is all over the place missing. I've had some that had a bad ground setup for the key plug (plastic insert one) you have, but they wouldn't ground out to shut down. I've seen some that the wiring at the handlebars for the key "switch" (actual key in a cylinder) was bad and caused intermittent grounding. Best test is to pull the wire from the inside of the recoil housing leading to a spade under the carb heater box and wrap it in electrical tape. Then start the machine and see if you have the same farting. You can stall out the machine with the choke if it does indeed run fine, or take some pliers and pop off the spark plug boot.
Youíre correct, I did have a typo on the carb part #, it is 640348 as youíve pointed out.
Ground issue does make sense.
This machine is new to me as of Jan., I havenít removed the recoil shroud. Tonight I did remove the recoil housing as suggested.
Flywheel has a considerable amount of rust. The ground wire was firmly on the ignition, I removed it as suggested. I took a few pictures: https://imgur.com/a/lUxYQ
Is the rust an issue? I assume itís not helping and should sand it off.
It was midnight when finished getting everything taken apart, so I didnít get a chance to fire it up. Tomorrow evening Iíll give it a shot and let you know the result.
Thanks for your help here
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