Check the following with mower off and spark plug wire removed to prevent starting:
1
Check your deck and drive components for debris. Remove any obstructions.
2
Check your belts for excessive wear or physical damage. Replace mower deck belt.
3
Check all fasteners to ensure that they are tight. Tighten loose fastener(s).
4
Inspect all pulleys for wear or damage. Replace worn or damaged pulleys.
5
Inspect that there is nothing around blade or lower spindle shaft.
Please refer to operator's manual or contact authorized service center for additional help.