Posted by Jiles on May 26, 2013 at 20:13:10 from (69.137.22.160):
In Reply to: Chainsaw revving posted by soundguy on May 26, 2013 at 18:43:15:
Quoting Removed, click Modern View to see
Check to make sure linkage is not holding carb slightly open. If not, you probably have an air leak. I would check the carb mounting boot first then I would suspect crank seals.
Is this a new for you saw? If not, I don't think you have a carb issue but I would adjust each screw out 1--1 1/4 turns.
An air leak is bad news for a 2 cycle engine. The motor will seize if not corrected!
With all chainsaws the "H" carb screw should be set to "4-stroke"-- when run at wide open throttle--but not in a heavy cut.
This can be done by holding the saw wide open and adjust for highest RPM--then turn screw out 1/8 turn until it seems to be choking up (four stroking). I have seen lots of mechanics overdo the revving but I only hold the throttle wide open for 3 to 4 seconds with each test
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
