Posted by norm s on December 24, 2010 at 11:00:55 from (216.157.201.172):
A number of weeks ago I posted a message about how I can never start my BN when it gets cold because it kicks back. Timing was checked and rechecked but to no avail. When the weather cooled down it would give problems and once winter actually got here it would not start at all because of kick back. Well, today I took the mag off and brought it into the shop and clamped it gently in the vise with wood on each side. While still cold I turned the mag drive and low and behold, it only tripped once in a while, not every time like it was supposed to. I could literally turn it round and round and it would not trip. So, I pulled the drive plate off and found a gooey mess inside - old oil, moisture, dirt, etc. had all accumulated over the years and made the mechanism gooey. Next job was to pull off the last piece of the mechanism which holds the trip fingers. Using a small puller I put tension on, just a little more, just a little more and POP, the casting broke :((( So now that I could see inside, the other thing I found was that the trip finger pivots were extremly worn, so even if it was clean and lightly oiled, I may still have caused problems with the tiny springs not being able to push the fingers out. Well, anyway, the piece is broken so I need a new one - and I still can't get the old one off the shaft. I called a old gentleman who works on mags and he says its a taper shaft with a key and he's never had a problem getting them off. So, I'm letting it soak with PB blaster on it, hopefully that will loosen it enough to get it off. Now I just need a new part...time to post a wanted ad here or go visit the IH dealer and take out a loan for a new one...
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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