20% of the fuel used in a 2 stroke goes out the exhaust unburnt. So the exhaust is shooting fuel vapour onto your grass, and leaving a trail of dead grass. We all know what happens when you spill petrol onto grass. The machine is lingering too long in any given spot and bombarding the grass with this unburnt petrol.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!