[sdfarmer]

return is always high even with bottom sieve open all the way.also sometimes the fan will get some grain in it then the grain tank looks like what you would find in a bale of hay.

 

[cutterihc915]

if you are getting grain in the fan then your precleaner is opened to far, wich disrupts your air flow causing the dirty sample as you arent getting proper air flow over the sieves. You should be able to play with the air and the sieves to obtain a perfect sample with little or no return...

 

[8010pilot]

What is your sensitivity set at ...ours it at 35. Factory "professional" told us to set it between 35 and 50!!!