Abstract: A twin belt mule drive for a mower deck has a pair of belts that transmit power from a drive shaft or PTO to driven sheaves for three rotary cutting blades. The drive shaft or PTO has two drive sheaves. The belts are twisted by two pairs of guide sheaves on horizontal shafts below the drive sheaves. The first belt transmits power to at least one of the driven sheaves, and the second belt transmits power to at least one other driven sheave that is not engaged by the first belt.

Abstract: An engine to transmission coupler includes an isolator that dampens, reduces or eliminates torque spikes and vibrations transmitted to the transmission. The isolator is located between the flywheel and a flywheel adaptor plate mounted to the flywheel. A universal joint assembly extends through central openings in the flywheel adaptor plate and isolator.

Abstract: A gear box for a grass mowing machine with a generally horizontal shaft extending from the engine and/or transmission, and a rotary cutting blade with a generally vertical shaft. The gear box has a top surface and a bottom surface, the gear box enclosing the first end of the generally horizontal shaft and the first end of the generally vertical shaft. The generally vertical shaft extends through the bottom surface of the gear box. The gear box houses a pair of spiral bevel gears to change the transmitting direction from the generally horizontal shaft to the generally vertical shaft. The measurement from the generally horizontal shaft to the bottom surface of the gear box is greater than the measurement from the generally horizontal shaft to the top surface of the gear box.