The engine rpm should drop when the lever is pulled back. The throttle plate has notches to hold the throttle in a given position. Several things could have happened. On one of mine the tooth on the throttle handle was worn down. We welded a small bead on the tooth and then I filed it down to a sharp point. Another thing could be that the grooves in the stationary part of the throttle plate have been round over through years of wear. It is also possible that the bolt holding the throttle lever is not tight enough. There is a spring in there and this may be allowing the throttle to drop back to the idle postion. O.E.M. Tractor parts has the entire throttle assembly for $68.00 or the throttle handle for $32.00. You could probably also get through your CASE/IH dealer.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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