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I inherited a Sears 647G chainsaw, but no manual. It has separate tanks for the oil and gas. Do I put a mixture of oil and gas in the gas tank? The oil tank I think is just to oil the chain. Or does it mix itself from both tanks? Do you know where I can get a manual for this? Cat

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I'm sure the separate oil tank is for the chain... you'll need to mix the gas with 2 cycle oil... typical ratio is 40:1 to 50:1...
Manuals are going to be real scarce... you may want to check with a local small engine repair shop to see if you can copy something they may have...

Posted on May 16, 2010

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Is this a oil injecting are do I mix like any other 2 cycle. It has a oil tank on the motor


Be very careful, the oil tank on the unit is probably a chain oiler. Please provide the make and model and let's see if we can find a manual.

You will know that running a two stroke motor without oil will seize the engine.

May 10, 2015 | Garden

1 Answer

What is the ratio of gas to oil for a 35cc engine


Mix 3.2 ounces of Poulan 2-cycle air cooled engine oil to one gallon of fresh unleaded gasoline to obtain the recommended 40:1 fuel to oil ratio.
Over a period of time oil will separate from gasoline. To properly insure oil and gas mixture, I recommend thoroughly shaking your oil and gas mixture before refueling your unit.
If the saw is to be stored for longer than 30 days - drain the fuel tank, re-tighten the gas cap, and start the unit and let it run until it stops.

Jun 09, 2014 | Poulan Predator 35cc P3516pr Chainsaw...

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Do you have to make a petrol/oil mixture for briggs ans stratton lawn mower engines?


Typically no, it uses gas only in the fuel tank and oil in a separate tank. To make sure do you have a separate cap for oil? If yes then you only use gas not a mixture of gas and oil.

Aug 18, 2010 | Briggs & Stratton Garden

1 Answer

Gas oil mixture


The header says that it is an electric saw which would only require bar oil. A 2-stroke gas engine, however, does require fuel mixed with a modern saw oil at 40:1 ratio plus bar/chain oil in it's own tank as well. Always premix the fuel and oil in a separate can and shake well even before filling the saw. Hope this helps!

May 24, 2010 | Homelite Consumer Products 9.0 Amp, 14 In....

1 Answer

I inherited a super xl automatic 04541447 from my deceased father and do not have a manual. Can you tell me the correct mixture for the gas?


Use 40:1 mix. Make sure to use only modern synthetic saw oils and premix in a separate can before use. Good luck!

May 20, 2010 | Garden

1 Answer

Port in front for oil and the back is for gas and mixture


Hello Andre;
I think you are saying you put oil/fuel mix in the oil tank and bar oil in the fuel tank; discovered your mistake drained both tanks and refilled with the correct fluids. Now the saw runs but smokes excessively. I think it will do no lasting harm. After you have run a few tanks of the correct mix (50:1) through the saw. Remove and clean the muffler and spark arrestor, reinstall them. Inspect your plug if any evidence of fouling replace it. I think you will be cutting with this saw for years.

Yes the additional smoke is caused by a very oil rich mixture and should abate with each fresh tank of fuel. If the chain is not moving ensure the chain brake is not engaged.

If you have more questions or need additional help please reply below and I will get back to you. Good Luck. HTH
Lou
Thank You for using FixYa.

Apr 23, 2010 | Homelite Consumer Products 9.0 Amp, 14 In....

3 Answers

What is the proper fuel mixture for a husqvarna chain saw ?


The Correct Fuel Mixture Ratio
All two stroke engine 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 50 to 1 ratio, and I use all types of makes and models, Stihl, Homelite, Husqvarna, Shindaiwa, and Echo, Sears. I mix up a 5 liter fuel can and use it in all of the equipment for my customers and for my landscaping. To calculate the ratio is simple. For instance , if you have 1 gallon of fuel it is best to break it down into smaller units, like ounces. One gallon = 128 oz. You then divide this amount by the ratio of the mixture which is 50 to 1 (50 parts fuel, 1 part oil). So therefore 128 oz of divided by 50 = 2.56 oz (you would just measure out 2.5 oz ) of two stroke oil. If using metric, say a 5L gas can, you would break this down to smaller units, which would be milliliters. 5L = 5000 ml. 5000 ml of fuel divided by 50 = 100 ml of two stoke oil.

Jul 25, 2009 | Garden

2 Answers

What kind of oil do I use in the oil reservoir of my chain saw?


I believe the reservoir you are talking about is for the bar chain oil. You can get it most anywhere. As for mixing the gas and oil mixture, you will need 2 cycle oil. It is available most everywhere also. Most modern chain saws use a 50:1 mixing ratio which means 2 1/2 ounces of oil to 1 gallon of gas. Hope this helps.

Apr 26, 2009 | Remington 16" Electric Chain Saw

1 Answer

I have inherited my dad's Echo chainsaw - CS-3900, but not the manual. My question is simple - how do I know if I should use a 50:1 or 32:1 oil to gas mixture?


Oil to gas mixture is more a function of the oil than the saw. If you use high quality oil like Echo brand, (or Stihl or Husqvarna) you'll be fine at 50:1. If the saw is older than 15 or so years you'd be a little safer running 32:1. It'll just smoke a little more at 32:1. I wouldn't worry about it too much.

Apr 19, 2009 | Garden

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