March–April 2020

November–December 2019
January 24, 2020
May–June 2020
May 19, 2020


2 The 7020 and 7520 Series Tractors Decoded
Digging Into The Serial Number Registers
16 Commentary
24 Perspectives
6030 Standard Tractors — by Jack Cherry
Early “720” Tractors — by Jack Cherry
Being Self-Sufficient — by Jack Cherry
Tractor Woes and Malfunctions — Hydraulic and Electrical Issues with
New Generation Tractors
— by Dan Resh
Sackett Sez… 2020 Is Off To A Great Start — by Lee Sackett
Model “AR” Serial Number 268280 — by David Dow
Tractor Talk Shrunken Down — The Model “420” I Tractors — by Doug Beaty

Regional Two-Cylinder Ambassador Program
John Deere 1:16 Scale Toy Replicas and Merchandise
John Deere Day Movies on DVD!
Products • Services • Suppliers
Classified Ads


The 7520 is the largest New Generation Tractor. This splendid example, in its final stages of being fully restored, is owned by Norris Fuchs of Texas. It is currently in Bob Herring’s care, an Eastern Iowa farmer, and the tractor was there when the cover photo of the 4050 Hi-Crop was taken for the November–December 2019 issue. Bob said that Norris is planning on putting the 7520 back to work!
The 4WD 7020 and 7520 Tractors are featured in this issue. These were the first 4-wheel-drive tractors entirely engineered and manufactured by John Deere, and they certainly have a well-deserved place in the company’s product history.

Two-Cylinder (ISSN 0899-2258) is the official publication for members of the Two-Cylinder Club®, and is available to anyone interested in the preservation of John Deere Tractors and related products.

The Two-Cylinder Club was chartered in Iowa in 1985 as a nonprofit service, educational, and recreational organization; and extends an invitation of membership to individuals interested in the preservation of John Deere Tractors and Implements and their important role in our agricultural heritage.

Two-Cylinder magazine is published bimonthly by Two-Cylinder, Ltd., 618 G Avenue, Grundy Center, IA 50638. Periodicals postage paid at Grundy Center, Iowa, and additional mailing offices. Annual (non-refundable) subscription rates, which include membership in the Two-Cylinder Club, are: $40.00 U.S., $56.95* Canada, and $94.95* to all other foreign countries (*U.S. funds). Single issue price: $10. Send all subscriptions and inquiries to P.O. Box

Postmaster: Send address changes to:

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Grundy Center, IA 50638-0430
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The information presented in Two-Cylinder is the result of considerable time and effort on the part of many dedicated individuals. However, it is recognized that the potential for error always exists, and this publication is no exception. Therefore, the publisher does not warrant or guarantee the information contained herein to be absolutely accurate, and accordingly, the publisher shall not be liable in regard to the use or reliance placed upon this information.

The images presented in Two-Cylinder are the property of several entities including Deere & Company, the Two- Cylinder Club, and private individuals. Each of the originating entities retains copyright of their photographs, materials, and documents.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the Publisher. Two-Cylinder magazine is subject to change in overall size, volume, content, and publishing/mailing schedule at discretion of the publisher.

Copyright © 2020
Two-Cylinder Ltd.
Volume 33 • Number 2

All rights reserved.

Editorial Director
Jack Cherry
Publication Manager
Brenda Harrenstein
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Gretchen Madden
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