Answer:
It will depend on the type of material and how often the mulcher is used. It has a built in mulching control lever that allows you to set the machine from pine needles to wet leaves.
Comes with 36, 85 mil 14" long nylon cutting cord, uses two cords at at time. Reduction ratio is 11:1.
Having extra cords on hand will prevent down time, a package of 12 is only $5.95 (item #20839).
Chipper/Shredders have two hoppers. One equipped with a chipping knife to chip small tree limbs, the other with free-swinging hammers that pulverize different type of garden debris such as vines, fibrous brush, brambles, etc.