OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Victa Lawn Mower Frames Victa Vulcan 505 self prop mower runs too fast!

My limited understanding is that the o rings from carb to "manifold" and "manifold" to cylinder can cause over rev if they are leaking. May be worth replacing them as they can deteriorate over time and cause an overly lean mixture.
Chris