Posted by Pleasejustmakeitrun on July 28, 2014 at 07:21:25 from (65.255.130.118):
I will start with saying i have one hell of a pieced together machine. It is a Cletract AG-6 that has had the engine from a Farmall H pieced onto it and a loader from god knows where. I bought it at an auction for basically the price of scrap so cant really go wrong there. It runs very well to be honest but as the Farmall H motor is undersized for that machine already i need all the ponies i can get out of it.
So heres the problem, I was attempting to tune the carb the other day after i had torn it apart and cleaned it out. First off there is saposed to be a fuel air mix screw on the bottom left of the carb. If i adjust that screw at all it just leaks fuel and it seems that its only purpose is to hold the main jet in place. Secondly you are saposed to be able to adjust the main fuel adjustments and get the engine to "blubber" i cannot do that at max rpms, in fact i cannot even get it to smoke black when under heavy load. I can open the main screw all i want and it doesn"t make a bit of difference, it will however if i close it a certain amount start starving out. As it is a gravity feed tank is it possible that the tank from the cletract is just not high enough to flow enough fuel to the carb? I am by no means a expert on tractors or carbs so any help is appreciated.
The last issue is the timing. The pulley seems to be way off because if you use a light and match the marks ups to the timing point on the block it runs rough and with absolutely no power. However if you turn the distributor counter clockwise a ways it runs pretty darn good. My question is how to you tune the timing by ear on these things or do you just guess and check how much power you have until you get the best setting?
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