Posted by ScandiaRon on June 10, 2013 at 12:40:40 from (66.77.190.72):
I was mowing pastures this past weekend and after about an hour and a half, my 641's throttle didn't want to stay at rpms sufficient to keep the rotary mower blade cutting. The engine would surge and slow, physically moving the throttle (slowing to about 1/3 rpms of what I wanted). I finished the pasture holding the throttle where I wanted it.
Could anyone help with how I should proceed? Is it a throttle/spring matter, the engine or something else?
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