SPOOL VALVE SERVICE MANUAL

Rebuild your Ion right.

Teardown guides, torque specs, and part references for the Smart Parts Ion family — written from actually rebuilding 80+ of them, not reposted from a decade-old forum thread.

Ion The original — most common, most parts on the used market. Ion 2.0 Revised board & body. Easy to confuse with the original. Ion XE Bolt-out-the-back — same core internals, different reload. Epiphany Distinct body, grip frame, and regulator grip. Coming soon.

Not sure which one you have? Use the model ID guide — the differences are subtler than you'd think, especially 1.0 vs 2.0.