Farm_Kid2
Guest
Congrats Old Pokey! You now have a combine! It took a lot of effort to get our 2188 to keep up with the 1680, and the 1680 runs cool with a dirty radiator when the 2188 runs warm with a clean radiator. I think you've got it. I wouldn't worry about the other spring too much if it will smooth out at startup. I know the guy who set our 1680 pump had to replace the Idle Bumper Spring with a lighter one. I'm not sure what effect this hasIJ I would really like to get my hands on the diagrams of the pump. Where did you find themIJ Have a safe (high speed) harvest, Mike
I think the reason you lost so much power was when you lowered the high idle, the throttle shaft can no longer pull on the other springs the amount they need to. If you turn one screw, several other screws need to be adjusted accordinly. At least thats how it works on my pump. I turned my governor screw "in_clockwise" and then had to lower the high idle. Since you lowered your high idle, you'd likely have to work the equation in reverse. RightIJIJIJ Again, before you turn anything, I'd suggest finding out what type governor you have. On my pump, I put the throttle in the stop position and took a 10mm allen to remove the plug. Then I took a 4mm allen to turn the screw. When I started the machine, both the low idle and the high idle were out of adjustment. I readjusted the high idle, then when I readjusted the low, it started to lope slightly. I had to adjust the bumper screw, which is the large screw just below the low idle screw, to stop the loping. The bumper screw takes a 19mm box wrench and a flat blade screw driver. When I turned the bumper screw in, it raised the idle again, so I had to work both the low idle, and the bumper in sequence with each other. Then guess whatIJ the high ide was off again.:-( Geez, had to go back and forth a number of times to get them all to play nice together. After the first try at 3 clicks, the second try, I had to readjust the throttle linkage to get enough shaft throw to idle the engine. I adjusted it, then went to work on the other screws again in the same way as before. Now the engine tries real hard to keep the rpms at the very top of the range. Before the adjustments, it would fall all the way down to 2500 before it would make any effort to hold. Does that make any sense to youIJ. Its your engine, so do what you wish, but if you're in any doubt at all, dont do anything till you find the right info.