Riding lawn mower

A riding lawn mower, comprising:

• a seat for a user to sit thereon;
• a body supporting the cutting system;
• a cutting system comprising a mowing element for cutting vegetation, a deck, and a first motor, the deck surrounding and forming a mowing space for accommodating at least part of the mowing element, and the first motor configured to drive the mowing element to rotate relative to the deck;
• and
• a circuit board mounted to the body;
• wherein the first motor comprises:
• a rotor assembly comprising a rotor shaft enabled to rotate about a rotation axis;
• a stator assembly, comprising a stator coil and a stator core;
• and
• a motor housing surrounding and forming an accommodation cavity for accommodating at least part of the stator assembly;
• wherein the circuit board comprises a substrate board having a first surface and a second surface, a printed circuit layer arranged on the first surface, an insulating layer covering an upper side of the printed circuit layer arranged to expose a first conductive portion and a second conductive portion on the printed circuit layer, a first type of electronic component comprising a first connecting portion electrically connected to the first conductive portion and a second connecting portion electrically connected to the second conductive portion, and a waterproof layer covering at least part of a whole formed by the insulating layer and the first type of electronic component with a substantially same thickness through vapor deposition with the first connecting portion and the second connecting portion being insulated from each other on a path through which the waterproof layer is connected after the waterproof layer covers the first type of electronic component.