My 416-8 tractor I have repowered with a small engine warehouse Briggs and Stratton 23hp vanguard engine two years ago. This week the tractor ran fine and I cut most of the grass until it rained out. I thought I would finish the lawn the next day but I will not run correctly. The tractor will crank but will not start. I have replaced the spark plugs and fuel filter already to no avail. I removed the spark plug and used starting fluid in the cylinder but It did not help any. When cranking the engine is the clear fuel filter housing supposed to fill up most of the way? It seems to be only filled about 1/4 of the way. I found a bad terminal in the engine to chassis 9 pin molex connector for the starter which I bypassed until I get a terminal remover tool. I bought a new molex connector body and terminals for this type of repair a few years ago. Another weird thing is when it did start and run in the past the switch is turned to start I have to turn on the head light switch for it crank over. Once it started I would turn off the head light switch to disengage the starter. The switch and head light trick has been working for two years. I am presuming I put the wrong terminal in the wrong spot in the 9 way connector 2 years ago but I worked fine other wise for two years. Is there any other trouble spots I need to test on the tractor?
I have a fluke dvom for testing purposes if needed.
Thank you in advance.