They regulate the size of mulch coming out.
There is a handle on the back of the machine. It is very easy to move around. You just rock it back slightly and the wheels make it easy to balance and move around. (A bit like moving a wheelie bin.)
The CM65 machine with either the Briggs & Stratton or Honda engine, weighs approximately 90kg. (About the same weight as a full green wheelie bin).
The CM65 machine can be transported in most types of cars.
For domestic use the warranty is 2 years, for commercial use the warranty is 3 months.