Use this forum to discuss small engines, and the equipment or machinery that they power. This is the main section for any technical help posts and related questions.
This is the one I bought in the 80's. Self tapping. Only 1 spacing. I guess they have updated it since then. I also bought a knock-off by a company called Silver-Streak that broke (Now a Stens brand?) I would go with the real deal. JMO...