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Old 04-08-2014, 01:11 PM   #1
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Mower/Trimmer Gas Issues


A few questions about gas for mowers and trimmers. I had trimmer problems at the end of last season and research indicates that use of old gas was the cause. (One 5-gallon gas can will last all season - but I am finding out that is not a good idea.) So I cleaned everything out and I am hoping it will work OK again. But I have some questions moving forward.

1. The trimmer uses a 40:1 oil mix. Can I add something to it to keep the trimmer engine clean? Will that allow me use old gas?

2. I read that "stale" gas/oil mix can be used up by mixing with regular gas in my mower. Is that true and is it safe? If so, what is a good ratio?

3. When cleaning out the trimmer carburetor, I detached the tubes leading from it to the gas tank, but - oops - I forgot to note which was which. I reattached them from memory but I want to be sure. Does the tube coming from the primer area of the carburetor go to the top of the gas tank or to the bottom where the gas intake cylinder-shaped filter is attached? (Sorry for not knowing the proper terminology.)

Thanks!

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Old 04-08-2014, 01:21 PM   #2
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Mower/Trimmer Gas Issues


No one here knows what trimmer you have.
Only mix 1, gal.at a time.
Dump the old right in your car or truck. Been doing it for 40 years and never had an issue.
Try to find a place that sells nonethanol fuel, or at least add a fuel additive that counter acts the effect of it.
And no it's not the red Stabil.
Any auto parts store, Wal-Mart, local power equipment shop will have it.
There no use trying to "fix" old gas.

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Old 04-08-2014, 01:29 PM   #3
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Mower/Trimmer Gas Issues


Don't leave any fuel sitting in the trimmer or mower over winter.
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Old 04-15-2014, 10:44 PM   #4
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Mower/Trimmer Gas Issues


Only mix one gallon of gas at a time. 5 gallons is too much. I'd recommend using 91-92 octane gas.

As long as you've got the lines off, spray the heck out of the carb (inside and out) with carb cleaner.

To re-attach the lines, determine which is the main, and which is the return line. Then go online and look up information/diagrams regarding that specific trimmer. It'll take a little digging, but you'll find the right information.
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Old 04-15-2014, 11:41 PM   #5
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Mower/Trimmer Gas Issues


Put a bit of Sea Foam in it and run it through the gas system. That will clean any Varnish & crud out of the fuel & carburetor.
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Old 05-18-2014, 10:24 AM   #6
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Mower/Trimmer Gas Issues


Gas and battery operated lawnmower which one better?
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Old 05-18-2014, 11:43 AM   #7
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Mower/Trimmer Gas Issues


Really should be adding your own post not hijacking someone else's bosch.
When you add your own add how big a yard your trying to mow.
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Old 05-27-2014, 11:34 AM   #8
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Mower/Trimmer Gas Issues


Quote:
Originally Posted by gregzoll View Post
Put a bit of Sea Foam in it and run it through the gas system. That will clean any Varnish & crud out of the fuel & carburetor.
Great advice. I've had a problem with my mower for years. At idle it would constantly surge high and low rpms. Also had a tendency to bog down occasionally. I added some SeaFoam to the gas tank and cut the grass and noticed no change. Then a week later I cut the grass again and the surging was gone. It now idles steady as a rock and seems like a new engine.

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