A lot will depend on the type of equipment the engine is used on. Ball park figures are 1400-1800 for idle and 3200-3600 for high speed. Again these are ball park, some units go as low as 1200 and as high as 3800. Hope this helps.
Not familiar with that piece of equipment, but being a type of lawn tractor, I would set idle at 1400 and governed top speed at 3200. This is based on past experience, not coming from a manufacturer. Some one may prove me wrong.
