This MTD Troy Cap Bilt Small closes off the related opening and helps keep the system sealed from dirt, moisture, or fuel vapor depending on application. Replace the cap when the original part is damaged, missing, or no longer seals correctly.
This MTD Troy Cap Bilt Small is used in the related assembly where wear, damage, or loss of the original part can affect normal operation. Matching the part number to your model is the best way to confirm fit.
Not sure if 731-04681 is the right MTD part for your model? Search your part or engine model number in our MTD Parts Lookup Tool.