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SE MN | I guess I am assuming that all 8770's have the same fuel filter set-up with a water separator filter and then the primary filter. Also, I have been calling the square one the primary filter, so maybe we are confusing which filter we are talking about. The round one has the water drain at the bottom. On top of this round one there is a plastic cap that screws on and off. I had a bunch of stuff get caught up in the area under this cap and the plug that comes out of there once and the tractor would run great and then randomly loose power and even die sometimes. Cleaned the junk out and problem solved. The square one has the check valve and it is on the bottom right port of the base. It kind of looks like an extra fitting that is between the filter base and supply line. It is part # RE54244. | |
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Deere 8770 fuel priming question
