The Craftsman 6.5 HP lawn mower typically requires a spark plug with the following specifications:
- Champion RC12YC
- NGK BPR6ES
- Autolite 4194
These spark plugs have a thread diameter of 14mm and a reach (thread length) of 19mm. The heat range of these spark plugs is designed to match the specific engine requirements of the Craftsman 6.5 HP lawn mower.
It is important to use the recommended spark plug size and type to ensure optimal performance and longevity of your lawn mower engine. Using an incorrect spark plug can cause engine damage and affect its performance.
If you are unsure about the spark plug size or need assistance replacing the spark plug, refer to the owner's manual of your Craftsman 6.5 HP lawn mower or consult with a qualified small engine mechanic.