MTD A08585 — Flat idler pulley (deck/belt guide)

Replace a worn or seized idler pulley with this sturdy flat steel idler (part A08585). Designed to guide the flat deck belt and keep correct tracking under load, it’s a heavy‑duty stamped steel pulley with an outer diameter of about 81 mm and a centre bore sized for a 12.7 mm (1/2") mounting bolt — the compact, low‑profile shape keeps the belt running against the flat face for reliable mulch/shred/deck operation.

Fits and cross‑references

- Commonly listed as Rover A08585 (also cross‑referenced to MD951‑00031 / PT8649), and used on Rover “Chip‑N‑Shred” machines such as model numbers 09862, 898117, 898150 and 89862. It’s also the same style found on a number of MTD/Cub‑Cadet ride‑on and deck applications that use a flat idler arrangement.

Why this part

- Direct replacement geometry for belt alignment and pulley life — no machining or modification needed when the original pulley is worn or damaged. Simple bolt‑on installation (remove belt tension, swap pulley, re‑tension belt) gets your deck back to normal.

If your machine lists A08585 (or the Rover/MD/PT cross‑reference), this pulley will restore proper belt routing and deck performance.