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Message: <blockquote data-quote="wford" data-source="post: 93428" data-attributes="member: 6365"><p>We purchased a used 1816B some years ago, probably the third owner, that has been a big disappointment. The seller said that the hydraulics were "a little jumpy" - that was an understatement. I only know of one other 1816 unit whose owner says his does it and it is the nature of the beast (but I don't think so). Of course, it is more pronounced when cold, and more amplified when we installed a Kohler Command Twin. I've gone through the machine several times over the years tightening the belts, adjusting the control lever linkage, tightening the chains, checking the oil pressure, inspecting the check valves, etc., but found nothing that points to the problem and a solution. Also, one side always appears to be "weaker" than the other. When the clutch is engaged and with the control levers (they are "touchy") in neutral, as you VERY CAREFULLY inch the control levers forward (or reverse), you can feel the unit beginning to get power when all of a sudden it will violently lurch forward (one side or the other - you never know) in a dangerously out-of-control manner. It is almost like what would happen if you had the engine running full throttle and slammed the control lever full forward. Releasing the controls to neutral will cause it to buck wildly back-and-forth as you frantically disengage the clutch to get it to stop. We keep the engine at near idle because full throttle is just way too dangerous. Once you get it underway, you can increase engine speed, but it is uncomfortably "jumpy". We have checked the charge pressure, system pressure, pressure at the relief valves, and all appear to be within normal limits. We had the motors bench-tested, but not the pumps (just pressure checked). We have changed the oil and filters according to the service manual. We thought it might be an oil flow problem, but once you can get it moving, it has lots of power to the point you can kill the engine if you plant the bucket. We are at a loss for an answer, and any ideas would be appreciated.</p></blockquote><p></p>

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