Small Engines (Lawn Mowers, etc.): Chain Saw help, synthetic motor oil, two stroke engines

Question
I just bought a chain saw from an older woman whose husband passed away she said that he used the saw often and that it still worked but that is all she new. My question is what type of fuel mixture do I use it has on the cap that it is fuel oil mix. It is a homelite (textron) chain saw. It is old i am guessing cause the case is all cast iron. I looked online to see if i could find it and that was no luck. I cleaned it up and found a UT NO.10520A and a SER NO.702390682 but again that did not help me out either. I have never had a chain saw before so i do not know diddley about them, so i want to find out the correct to fill it up. Thankyou for your help!
Bradley

Answer
Hello Bradley:

The OEM Suggest a 32:1 Ratio for this Saw. However, All Two Stroke Engines will use a 50 to 1 Ratio using Today's Two Stroke Oils.  I once used an Old Chainsaw probably from the 1960s, that had a sticker on it that said to use a 25 to 1 Fuel/Oil Ratio, but that would have been using Two Stroke Oils of the Time Period the Chainsaw was Manufactured.  In that Chainsaw I used 50 to 1 Ratio with no problems.  Today's Two Stroke Oils compared to Yesteryears are more Efficient at Lubricating.  It is like comparing Today's Synthetic Motor Oil to Motor Oils of Decades ago.  All the Equipment I use in Landscaping, anything from a Weed Eater, Leaf Blower, Chainsaw, Hedge Trimmer, use 40 to 1 ratio, and I use all types of makes and models, Stihl, Homelite, Husqvarna, Shindaiwa, and Echo, Sears.  I mix up a 5 Gallon Fuel can and use it in all of the Equipment for my Customers and for my Landscaping. I like my Fuel/Oil Ratio a Little Heavy, so I Use a 40:1 Ratio. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John

Hello Again Bradley:

Have you Cleaned the Exhaust Port and Muffler? If these are Clogged, then the Carburetor Can Not Draw Gas Into the Cylinder. If the Saw has Set for a While, then I Suggest you  Remove, Disassemble and Soak the Carburetor Overnight in Carburetor Cleaner (I Use Gunk). I have Found that Most People can Use a Breakdown/IPL and Disassemble the Carburetor Enough for Proper Cleaning. You Only have to Remove the Bowl, Float Pin, Float (if Applicable)  and Needle Valve and Any Adjustment Screws that Go Into the Carburetor Body. The Welch Plugs Do Not have to be Removed. Then Soak the Carburetor Body and Parts in a 1 Gallon Can of Gunk Carburetor Cleaner Overnight. The Can has a Parts Tray Inside it for the Small Parts. Once the Carburetor and Parts are in the Cleaner, you can Replace the Lid for Safety and to Prevent Accidental Spillage. Then Blow Out the Passages with Compressed Air. Install New Parts if Required. If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.

Respectfully

John