Yesterday's Tractor Co. Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
John Deere Tractors Discussion Forum
Show Parts for Model:

620 Compression

Welcome Guest, Log in or Register
Author  [Modern View]

02-09-2013 15:32:14

Report to Moderator

What should the compression be and what is considered OK?

[Log in to Reply]   [No Email]

02-10-2013 12:35:11

Report to Moderator
 Re: 620 Compression in reply to RMOMN, 02-09-2013 15:32:14  
Usually best to check it on a couple different never know if you might have a little chunk of carbon trapped under a valve that could be temporary..

Pretty sure mine is around 125# in each one..

Can handle 4x16" in 2nd in some hard-pulling ground..when properly weighted..


[Log in to Reply]  [No Email]

02-10-2013 07:31:43

Report to Moderator
 Re: 620 Compression in reply to RMOMN, 02-09-2013 15:32:14  
My 620 has 90# on both cylinders I was told the tractor hasn't been used in over 10 years. I'm going to plow with it and see how it does

[Log in to Reply]  [No Email]

02-09-2013 17:51:12

Report to Moderator
 Re: 620 Compression in reply to RMOMN, 02-09-2013 15:32:14  
we have one with 100# in the left hole and 75# in the right hole and it runs good. the other one we have is sone where between 100 and 125# in each hole,dont remember the exact number now but that one was the same on each side if i remember right, it also runs very good

[Log in to Reply]  [No Email]
Gene Hillman

02-09-2013 19:59:07

Report to Moderator
 Re: 620 Compression in reply to johndeeregreg, 02-09-2013 17:51:12  
Well charged battery, both plugs removed, throttle and choke wide open, accurate gauge. Eveness is more important than the reading but should be within 10 percent of each other.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums

Copyright © 1997-2018 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters