If it scored on the exhaust side it could be carbon build up from a rich mix or from the spark arrester being clogged. On the intake side it's usually a lean mix and that can happen on the exhaust side too. Bad seals or a poor head to crankcase seal can cause leaning but it's usually some guy leaning it out so she "screams". Bad or dirty air cleaners can cause leaning or a rich condition depending on what you have. There are likely a few other reasons too.
IME any name brand oil, Stihl, Husky, Jred, Dolmar, Echo, will give good results if mixed properly and with correct carb settings when used with decent gas. Alcohol and oil don't mix well as a general rule, so I run 40ish -1 rather than 50-1.
If the saw is in otherwise decent shape, a piston or piston and jug may be worth it. Look around at what a replacement would cost and then decide.
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 - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[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.
