Get rid of ALL the gas everywhere. Rebuild the carb, (easy), blow all the lines out everything, put in new gas.
Drain all the
oil, then put in some crummy new stuff, bar the engine over until the dizz is pointing in a direction you will remember with the body also poing in a direction you will remember, then pull the dizz and prime the
oil through the engine. (Good idea to take the valve covers off and look for
oil coming theough all the rockers). Put the dizz back right how you found it, (dont turn the engine over while the dizz is out or you will be timing the thing). Put the dizz back.
Pull and toss the plugs, spray some lube in the holes, turn it over a few times with the starter now (with the plugs OUT), put in some new plugs. Leave one out with a wire on it, turn the engine with it grounded check for spark.
Check gas is getting to the carb (the accel pump will tell you).
You should have gas, spark and compression...
Start and warm up, change the crummy for good oil.
now for your crummy rotten brake calipers and clutch slave cylinder likely full of water...