Really simple to check the advance. First thing is to look inside the distributor. Take the breaker plate out so you can see the marking on the shaft. It will say 40L or 30L or some other one of several different advances. Then you know what you are dealing with. Static time the engine to top dead center, mark the front pulley or flywheel off in degrees. Hook up a timing light and see if it is near top dead center at low idle & gradually increases the advance up to the total that is marked on the shaft when you reach rated rpm's. It should have a 30 degree advance but a 40 will work as is probably what is in it but you never know. If you do not have the correct total advance you never will achieve maximum horse power. Also, if it does not retard as the engine slows down you will not have good lugging power. If you had it on a dyno you could change the timing as it is pulling and set for max power, then note that timing and select the correct advance distributor shaft for your purpose.
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Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
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