Mower deck with tilted idle pulleys

A mower machine having a mower unit configured to rotate a blade by a rotational power from an engine, the mower unit comprising:

• a mower deck liftable up/down by a lift mechanism;
• a plurality of blade rotational shafts extending through a top plate of the mower deck perpendicularly;
• a plurality of blade pulleys mounted on the respective blade rotational shafts;
• an idle pulley unit comprising plural tilted pulleys with tilt axes that tilt away from each other relative to a vertical axis of an output pulley of the engine;
• and
• a single belt routed around the output pulley of the engine, the idle pulley unit, and the blade pulleys;
• wherein a pulley height of the idle pulley unit is set higher than a pulley height of the blade pulleys;
• and
• a belt portion of the belt running between the output pulley and the idle pulley unit extends to pass over and above the other belt portion.

A mower unit, comprising:

• a height adjustable mower deck;
• a plurality of blade rotational shafts extending through a top plate of the mower deck;
• a plurality of blade pulleys mounted on the respective blade rotational shafts;
• a first pulley that rotates about a first axis that is tilted relative to axes of the blade rotational shafts;
• a second pulley that rotates about a second axis that is tilted relative to axes of the blade rotational shafts;
• the first and second axes being non-parallel to one another and tilting away from each other;
• a single belt having:
• a first belt portion configured to pass around an output pulley of a drive source and pass around the first and second pulleys;
• and
• a second belt portion that passes around each of the blade pulleys;
• a pulley height of the first and second pulleys being higher than a pulley height of the blade pulleys;
• and
• a portion of the first belt portion running between the output pulley and the first and second pulleys passes over and above a portion of the second belt portion.