Posted by Nebraska Cowman on March 03, 2009 at 03:52:47 from (66.252.120.75):
Lanse, The piston at the top means nothing. It comes up TWICE for every cycle. Once compressing the fuel mixture to fire (valves closed) and once to expel exhaust (exhaust valve open) If you have the mag timed to fire on the exhaust stroke it ain't gonna run. Read my instruction again.
Chucky. There is nothing wrong with your tractor. You need to time the mag right. FIRST, (this is simple) Take out the #1 spark plug (thats the one at the front, closest to the radiator) Now with your thumb over the spark plug hole have a friend crank the engine over till you feel air pressure on your thumb, (you might have to try this several times to get it right. Once you start to feel some air coming out, STOP cranking. Now, with a piece of wire or something, (I use a screwdriver or my plier handle) poke in the hole and continue cranking the engine SLOWLY. You will be able to tell when the piston is at it's very top. Grab the fan and rock it back and forth a little to be sure it's at the top. (you might want to take all the spark plugs out so it turns easier) NOW....without moving ANYTHING, Take the distributor cap off. See which way the brass piece on the rotor is pointing. That is where the spark is coming from and it needs to get directed to number one cylinder at this time because it is the one that is ready to fire. (Do you understand how a 4 cycle engine works? ) Four strokes, Intake stroke, as the piston goes down, intake valve opens and fuel mixture is sucked in. Compression stroke, both valves closed, piston comes up and squeezes fuel vapor real tight, when at the top of the stroke spark occurs BOOM, Power stroke piston is forced downward by explosion, (I know you understand that) both valves are closed. Exhaust stroke exhaust valve opens as piston comes up and burnt gasses are expelled. The other 3 cylinders follow in like manner. In your case 1,2,4,3. Let's see, now, where was I? Oh yeah, The rotor. Look at that pointer piece. Now look at the cap. Is it pointing toward one of the holes in the cap? close to it? before or slightly after? Slightly after is good. Before will break your arm. Stick #1 plug wire in that hole. (nothing else matters at this point, let's get the tractor running first) Now continue in a clockwise direction and insert the other plug wires, 1,2,4,3 and reinstall the spark plugs. Try starting it now. Unless you have had the magneto apart and messed up the internal timing (very easy to do) it should at least try to run.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
