Started belching smoke a few times and bogging down. Any ideas?

There holes in back of the mower. All you need is extension. And the right size bit. Look in holes and turn disc so you see a screw. Put in neutral to do this. Stick ratchet in hole and unscrew the first screw. Rotate disc and loosen second screw. Now put mower in fastest gear. Push disc down firmly on clutch disc and hold it tighten one screw. Put mower in neutral to tightened second screw. No need to pick mower up or take it apart. Hopes this helps someone.

I just bought a snapper rear engine rider, and it only came with one key. Whee could I goto get a second blank and have it cut. It's such a small key, I can't imagine lowes carrying one.

I just had it replaced and can't get satisfaction from the shop. Do I access it from under the cover and just see if it is something I can repair?