Big Block Engine

The air-cooled Vanguard Big Block engines on its IS 2000Z and IS 3100Z mid-mount zero-turn mowers are covered by a global 3-year commercial limited warranty. 

• IS 2000Z is available with a 30-hp Vanguard Big Block with a 61” mowing deck
• IS 3100Z features 30- and 32-hp Big Block units with 61” decks and 32-hp Big Block model with a 72” deck