JD-SM2020 John Deere

John Deere 720 Series Diesel Tractor Service Manual (SM-2020)

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John Deere SM-2020 service manual (1957) for the 720 Series diesel tractor, serials above 7214900. Diesel and cranking engine, transmission and Powr-Trol.

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Specifications
BrandJohn Deere
Model720 Series Diesel
Year1957
Manual NumberSM-2020 (12-57)
Model720 Series Diesel
Serial RangeAbove 7214900
Engine2-cyl diesel, 376 cu in
Cranking Engine4-cyl gasoline, 18.85 cu in
Belt HP58.84 (Nebraska Test No. 594)
CompatibilityJohn Deere 720 Series diesel tractor, Serial Numbers above 7214900 (with notes for earlier serials). Service manual SM-2020, 12-57 edition. Two-cylinder diesel, 376 cu in, with a four-cylinder gasoline cranking engine for cold starts.
FormatPDF
DeliveryInstant, after checkout
Product codeJD-SM2020
Instant accessDownload link after checkout
Any deviceComputer, tablet or phone
Support[email protected]

The 720 diesel is a two-cylinder that starts on a little V4 gasoline pony engine. This 1957 John Deere dealer manual covers both, plus the rest of the tractor.

Fits

720 Series diesel above S.N. 7214900, with notes where earlier tractors differ. Two-cylinder 376 cu in, 58.84 belt hp (Nebraska Test 594). Dated December 1957.

Table of contents

  • Section 10 - Description, Operation and Specifications
  • Section 20 - Predelivery, Delivery, After-Delivery and 150-Hour Services
  • Section 40 - Tune-Up and Adjustment
  • Section 60 - Diesel Engine
  • Section 65 - Cranking Engine and Accessories
  • Section 70 - Governor and Speed-Control Linkage
  • Section 80 - Electrical System
  • Section 90 - Cooling System
  • Section 100 - Diesel Engine Lubrication System
  • Section 110 - Fuel System
  • Section 120 - Pulley, Clutch and Pulley Brake
  • Section 130 - Transmission
  • Section 135 - Powershaft
  • Section 140 - Differential and Final Drive
  • Section 145 - Float-Ride Seat
  • Section 150 - Brakes
  • Section 160 - Wheels and Tires
  • Section 170 - Steering Mechanism and Front Axle
  • Section 180 - Custom Powr-Trol

Check before you buy

The gasoline and LP-Gas 720 uses SM-2025. Power steering is in SM-2016 and Powr-Trol in SM-2022. Scanned copy of the original factory printing.

PDF, English. Download link right after checkout. Independent seller, not affiliated with John Deere.