Minneapolis-Moline ZA / ZAS / ZASI
VerifiedProduction years: 1949–1953 (per TractorData).
The Minneapolis-Moline ZA / ZAS / ZASI is documented here with production years, manuals, and service references. Serial-number-by-year decoding for this model is pending a verified tabular source. We do not assert horsepower, engine, or production-count figures until confirmed against factory literature.
Nebraska Tractor Test Results
Official, independently measured performance from the University of Nebraska Tractor Test Laboratory (public-domain reports). Figures are as-tested on a specific fuel/transmission variant — your tractor may differ. Look up the full report by test number.
| Test No. | Fuel | Year | Drawbar hp (max) | PTO/Belt hp |
|---|---|---|---|---|
| 438 | Gasoline | 1950 | 32.07 hp | 36.20 hp (Belt) |
Factory Paint Colors
Body, wheel, and powertrain colors documented for this model's era by the MMCI Paint Committee. The exact part-by-part configuration, year breaks, and footnotes are in the full paint reference. Individual tractors vary — special orders and regional exceptions were common, so confirm against your own machine.
- Prairie Gold (body)
- Cherry Red (wheels / trim)
Finding Parts
We don't publish part numbers we can't verify against factory literature. The authority for this model's part numbers is its factory parts catalog; interchange is serial- and configuration-dependent, so always confirm against the parts book before buying.
Carburetor
Documented carburetor for this model: Marvel-Schebler TSX-97 (MM #RE9046) (per MolineParts.com — MM Carburetor Applications (Marvel-Schebler / Zenith / factory)). Applications vary by year, fuel, and serial — confirm your tractor's number against the carburetor tag and your parts catalog before ordering a kit.
Documented parts
Cataloged Minneapolis-Moline part numbers documented for this model. Applications vary by serial, year, and configuration — confirm against your parts book before ordering.
Clutch
- 10P355 — 10" organic clutch plate, solid center
- 10A3743 — Pressure plate, 11", three levers, 9 springs
Oil Filter
- RE5599 — Oil filter
Surviving Examples (collector-reported census)
No tractors registered for this model yet. The MinnieMo registry is owner-submitted and moderator-reviewed — help start the census.
Sources & Verification Notes
Status: Verified
Primary source: TractorData — Minneapolis-Moline model listings tier 4
Last checked: 2026-05-31