BBM ZT ELITE MODELS ZERO-TURN MOWER. Manual - part 11
PAGE 41
Blade Removal:
To change blades, it may be easier to use a piece of
wood to keep the blade from turning so that the bolt
can be loosened. Use a 15/16” socket and impact
Drill, or a wrench and an extension to gain more
leverage. You might need to put a ¾” wrench on top
of the pulley bolt to keep the blade from spinning.
Bolts used have right-handed threads.
Re-torque the blade bolts to 90-110 lbs.
The blade spindles contain a sealed ball bearing
inside the top and bottom of the spindle. The bearings
are replaceable for a more cost effective repair.