I hope it quits raining soon so you can get back at it. Ok, the fan cutoff point is at back of the fan housing where the opening for the air to go to the seives. At the top of the opening the fan blades come close to the sheet metal air director. This is the air cutoff point. You may not be able to get a tape in there but if you can take off the sidewind sheild on the left side of the machine you should be able to get a fairly close estimate. It needs to be no greater than about 1_8". I run mine less than 1_16" to keep the air from continueing on around the fan. Its easy to adjust, as I'm sure you see the bolt slots on side of the machine. The purpose of getting the clearence tight is to send all the air to the seives rather than just continueing to spin in the fan. Be careful if you do adjust it, take the belt off the fan so you spin it freely cause sometimes one blade may be "high" with can hit the housing. That would'nt be good! I've seen combines come from factory with over 3_4" clearance. When combining heavy material like wheat the fan just could'nt pump enough air to keep up. On the side cutouts, you'll notice the fan blades actually disapear behind the sheild at about 7 or 8 o'clock position when viewed from the left side. This disrupts the air flow to the center of the fan. As soon as the fan blade passes the cutoff point it begins to start a new intake cycle.You'll see that at the 1 o'clock position the end of the blade is open, so air can pass inward but when it disappears behind the sheild the air can no longer travel inward, it can only be pushed foward by the blade. Its tough to describe, but if you cut out the sheild so that some blade end is always visable it will allow a consistant flow to center of the seives. If you post your email address, I'll try to send pictures of the cutout. If you'd rather not "cut up" your combine, I can definately understand and there are ways to sort of mask over the problem, there just not as effective. Also, if this problem just started this year and you never had the problem in the past then sometimes the crop is just going to make setting the machine near impossible. When you say a patch of daisys, they're probly green yet arent theyIJ This will probly coat you seives with a sticky coating of daisy juice and man that'll really reek havok when it comes to setting the machine. When I run red clover on a dry year sometimes we get a serious coating of "honey dew" ,which will be so stickky the cleaner mill has to add talk powder to get to flow through thier equipment. Its near impossible to get a clean sample. We just have to pay the piper on those years. Shutting the machine down full sounds tough but its a lot easier on the machine than a windrow slug that plugs the rotor. I'm not sure, but your manual should give instructions on a "quick kill". If not, and you do want to try it, just let me know and I'll post some general guidelines for doing so.
