1969-1978 Ariens 22000 Series Sno-Thro Parts & Service Manual (P/N 000138A)

• Covers 1969–1978 Ariens 22000 Series Sno-Thro tractors, including all 20-inch and 24-inch clearing widths across 4, 5, and 6 horsepower configurations
• Official Ariens publication P/N 000138A, dated 1969–1978
• Contains 59 pages of exploded-view diagrams, parts lists, and system wiring schematics for the tractor, snow scoop, and electric starter components
• Provides the definitive parts breakdown and factory service guidelines across every production serial range

Component and System Documentation

Getting a classic Sno-Thro back to factory spec requires exact diagrams. This publication delivers thorough documentation for the assembly and maintenance of the tractor and its clearing attachments. You get clear, exploded-view breakdowns of the collector housing, rake system, discharge chute, and drive train assemblies. Need to trace a wiring fault or route a new cable? The text includes specific guidance on shift linkages, cable routing, and 120-volt electric starter kit installations. It also outlines the procedures needed to adjust the friction wheel, carrier brackets, and interlock safety systems. As a standard shop practice when applying these adjustment procedures to rotating assemblies, always ensure the spark plug wire is disconnected and grounded to prevent accidental starts. Additionally, the manual features complete troubleshooting charts to help isolate stubborn issues like belt misalignment or shifting difficulties.

Specification Highlights

Accurate technical data is the backbone of any heavy repair or restoration. This documentation provides the exact figures needed to maintain the integrity of the drive and clearing systems. For example, the engine assembly section lists a critical crankshaft runout tolerance of ±0.08 mm (0.003 in). The manual confirms standard fuel tank capacity at 4.7 liters (1.2 US gallons). You will also find precise hardware callouts, such as the M10 × 1.5 mm fastener requirements for blade attachment bolts. Whether you are replacing a shear pin or rebuilding the entire gearbox, this 59-page reference provides the precise electrical wiring specs and part numbers essential for servicing these vintage machines.