John Deere's original dealer service manual SM-2025 for the 720 Series spark ignition tractors, covering gasoline, LP-Gas and All-Fuel versions. It gives full removal, disassembly, inspection, repair, assembly and installation instructions for the engine, transmission, Custom Powr-Trol, steering and more, plus complete factory specifications. Most of it applies equally to the Model 70 and 730 Series.
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This manual (SM-2025, dated 9-58) is written for the John Deere 720 Series two-cylinder tractor, built in Gasoline, LP-Gas and All-Fuel versions. The factory states that most of the content applies equally to the Model 70 and 730 Series tractors, since the three share identical or near-identical components and procedures.
The engine is a two-cylinder, cast-in-block, valve-in-head design displacing 360.5 cubic inches, pressure-lubricated with a full-flow oil filter and governed by a flyweight-type governor. Belt horsepower ranges from 45.3 on the All-Fuel version to just under 60 on gasoline and LP-Gas. The tractor offers six forward speeds and one reverse, a dry-disk hand-operated clutch with six 10-inch disks, and either manual steering or optional hydraulic power steering. Custom Powr-Trol hydraulics, when fitted, use a position-responsive rockshaft or a rockshaft paired with one or two remote cylinders.
Electrical/ignition detail beyond removal and installation is covered in the separate SM-2026 Electrical Systems manual; power steering detail is in SM-2016; carburetors in SM-2024; and Custom Powr-Trol detail in SM-2022. This is a vintage factory manual reproduced from the original 1958 printing.
| Manual Number | SM-2025 (9-58) |
|---|---|
| Models | 720 Series (also 70, 730) |
| Engine | 2-cyl, 360.5 cu in |
| Fuel Versions | Gasoline, LP-Gas, All-Fuel |
| Transmission | 6 fwd, 1 reverse |
| Machine Type | Row-crop tractor |
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