The Trusty Earthquake is fairly simple to operate. Standing at the rear facing forward lever on left hand handle bar is the clutch, not clear from the photo but it looks as if your machine has a throttle control on the right hand side. The original engine was governor controlled, no throttle lever. On the right hand side of gearbox is the gear lever, all the way forward should be reverse, then as you come back neutral, first, neutral, second and if a three speed gearbox, neutral, third. Lever on back of gearbox is to engage drive to rotavator tines. Depth control is the spring loaded bolt/pin at very back which is used to adjust depth skid. Depending on ground conditions do not try to go full depth on first pass, go in stages. If trying too much in one go machine will tend to jump or even stall depending on ground. Hope this helps.
