INTERNAL COMBUSTION ENGINE PNEUMATIC TIRE. replace.me 8FGU | 8FDU SPECIFICATIONS Limited free-lift 2-stage mast (V). The data in this brochure is determined based on our standard testing condition,. The performance may vary depending on the actual specification and condition. Mast dimensions and rated capacities Model Lift height Height, mast lowered Height, mast extended 1) Height, mast extended Free lift, without load backrest Free.