300 Governor problem (Jim must read)

300guy

Member
I went to the farm today and checked the governor problem. I unhooked the linkage from the governor arm, set the throttle at the WOT and then moved the governor arm to WOT. The arm went about 2 inches farther than the linkage. So I was debating about taking all the side covers off today and started to do a little looking at the linkages. The problem was right under my nose!!!!! As I moved the throttle arm into different notches on the rack, luckily I was on the right side of the tractor, in front the rear wheel and as I looked to see if the linkage was moving small amounts, I looked back at the throttle arm and just happen to notice the roll pin that holds the arm onto the throttle rod was out about 3/8 of an inch. I looked at the other side and the roll pin was flush with the throttle arm. I said I wonder, decided to drive that part of the roll pin back into the rod. I then rechecked the hole alignment and now they matched!!!! So I hooked everything back up and as soon as I moved the throttle arm to a notch off idle or another one down, the engine speed immediately went up. So like I said the problem was right under my nose! The roll pin was pushed out of the bottom of the arm and I would have NEVER seen it unless I was looking for things like this and the procedure Jim said to do to isolate the problem. So THANK YOU Jim!!!!! Your procedure probably saved me a bunch of money to send governor in to have rebuilt to find it still had the same problem. Now all I have to do is get a new roll pin and replace the broken one!!!! Thanks Jim!!!!!!!! Who would think a roll pin partially out of the arm and rod would change the engine speed change that drastically.
 
My uncle's 400 had a throttle lever that needed to be pushed forward and moved under the lower bracket to get to speed. The rod was twisted, the pin was 1/2 sheared, and there was wear in the parts under the hood at pivot points. I fixed all those issues then I had to make a special effort to tell all operators not to wreck it again because they had gotten used to putting it under the bracket. Jim
 
Ahh, Intresting Jim, I got a 450 LP gas, it runs a little slow maybe 150 rpm, I don't use it much, so it's not a priority to figure it out,but my throttle has never been put under the bracket, it wont go that far,and wouldn't want anybody to try it, One of these days i will work on it!!
 

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