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Author Topic: Fuel mixture for weed wacker  (Read 414 times)

Rene T

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Fuel mixture for weed wacker
« on: October 14, 2018, 06:11:55 PM »
I have a leaf blower and a chain saw and they both run on a fuel/oil mixture of 50:1.  I have a weed wacker and it runs on a 30:1 ratio. I have to keep 2 gas cans. Kinda a PITA.  Would it hurt the weed wacker if I run it with the 50:1 ratio. I know it would get better lubrication but I'm wondering if the plug would foul sooner.
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

pappy437

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Re: Fuel mixture for weed wacker
« Reply #1 on: October 14, 2018, 08:34:45 PM »
Won't last long.50 to 1 is a lot less oil than 30 to 1.

Roy M

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Re: Fuel mixture for weed wacker
« Reply #2 on: October 14, 2018, 09:21:41 PM »
Not necessarly. The trimmer is likely quite old if 30:1 is specified, oil technology has come a long way. I run my old saws (at least the ones I can start) on 50:1 using Stihl Ultra oil with no problems, my Homelite originally called for 16:1 but that was non detergent motor oil which was all we had at the time. You will need to fine tune the carburetor.

Utclmjmpr

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Re: Fuel mixture for weed wacker
« Reply #3 on: October 14, 2018, 09:46:21 PM »
  Why not go the other way and mix everything 40:1 and go with it/???Dan
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Rene T

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Re: Fuel mixture for weed wacker
« Reply #4 on: October 14, 2018, 09:52:38 PM »
I just went outside and looked again. The weed wacker is 40:1. I'll change my question. Can I run the leaf blower and chain saw on a 40:1 ratio instead of 50:1?
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

Lou Schneider

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Re: Fuel mixture for weed wacker
« Reply #5 on: October 14, 2018, 10:34:27 PM »
40:1 is 3.2 ounces of oil per gallon, 50:1 is 2.6 ounces per gallon.  I wouldn't worry about +/- 0.6 ounces of oil per gallon, if they don't smoke excessively you're fine running the richer (40:1) mixture.
« Last Edit: October 14, 2018, 10:36:24 PM by Lou Schneider »

Rene T

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Re: Fuel mixture for weed wacker
« Reply #6 on: October 15, 2018, 03:46:19 AM »
40:1 is 3.2 ounces of oil per gallon, 50:1 is 2.6 ounces per gallon.  I wouldn't worry about +/- 0.6 ounces of oil per gallon, if they don't smoke excessively you're fine running the richer (40:1) mixture.

Thanks Lou. That's what I was hoping. It will make it easier to just keep one fuel can instead of two.  I'll have to wait till next spring because all three are sort of winterized and put to bed for the winter. Winterized means I ran them dry of fuel so the carbs don't gum up over winter.
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

wackymac

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Re: Fuel mixture for weed wacker
« Reply #7 on: October 15, 2018, 06:51:35 AM »
Rene T---Are we going to have another mini-rally this coming January?
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Rene T

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Re: Fuel mixture for weed wacker
« Reply #8 on: October 15, 2018, 08:01:24 AM »
Rene T---Are we going to have another mini-rally this coming January?

Most likely. Haven't got together with Ed yet to come up with a date.  We usually don't decide until sometime in late November or early December. 
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

jhskick

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Re: Fuel mixture for weed wacker
« Reply #9 on: October 15, 2018, 08:53:48 AM »
Rene with the new PC gas gumming up everything I started using  the premixed stuff atTractor Supply. Have not had any problems.
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lynnmor

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Re: Fuel mixture for weed wacker
« Reply #10 on: October 15, 2018, 10:11:30 AM »
There are 42 stations in New Hampshire that sell ethanol free gas.

Roy M

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Re: Fuel mixture for weed wacker
« Reply #11 on: October 15, 2018, 10:50:40 AM »
Rene with the new PC gas gumming up everything I started using  the premixed stuff atTractor Supply. Have not had any problems.
That works very well. It is pricey but for the amount most people use in a trimmer over the summer it's not going to break the bank.

SpencerPJ

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Re: Fuel mixture for weed wacker
« Reply #12 on: October 15, 2018, 12:49:52 PM »
I mix my stuff 50:1 and then the one item I have that takes 30:1 (the snowblower, lol)  if i need it, i fill the tank with 50:1 and add a few drops of 2 cycle oil straight in the tank. 

Rene T

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Re: Fuel mixture for weed wacker
« Reply #13 on: October 15, 2018, 01:48:52 PM »
I mix my stuff 50:1 and then the one item I have that takes 30:1 (the snowblower, lol)  if i need it, i fill the tank with 50:1 and add a few drops of 2 cycle oil straight in the tank.

What's a snowblower?   ::) :o :-\ ;D
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

SpencerPJ

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Re: Fuel mixture for weed wacker
« Reply #14 on: October 15, 2018, 03:10:23 PM »
For all you SnowBirds, in case you really don't know what a snowblower is, this is what we do in the winter time when in rains below 32 degrees.
 ;) :o 8) ::) :-\

Rene T

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Re: Fuel mixture for weed wacker
« Reply #15 on: October 15, 2018, 05:23:08 PM »
For all you SnowBirds, in case you really don't know what a snowblower is, this is what we do in the winter time when in rains below 32 degrees.
 ;) :o 8) ::) :-\

Oh, I remember that now.  :'( :'( :'( (:( (:( (:(  Looks like fun. NOTTTTT
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

jhskick

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Re: Fuel mixture for weed wacker
« Reply #16 on: October 15, 2018, 05:54:34 PM »
Just bought a kubota with loader mower deck and snow blower. Diesel no mixing. Sandwich fair Rene.
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Back2PA

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Re: Fuel mixture for weed wacker
« Reply #17 on: October 15, 2018, 06:08:08 PM »
Just bought a kubota with loader mower deck and snow blower.


Had a Kubota with the same setup with last house in PA, plus a salt spreader on the 3 point. Buddy kiddingly told me I probably had better equipment than the township  ;)  When that blower got a good mouthful it would really throw the snow, guessing 50-75'. Blower was made in Canada.
Scott
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Hanr3

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Re: Fuel mixture for weed wacker
« Reply #18 on: October 15, 2018, 09:12:12 PM »
FYI- you cannot run a carburetor dry. The fuel bowl still holds fuel, you must drain the fuel bowl too.

Gasoline allowed to remain turns to varnish, which fouls out carburators. Alcohol (ethanol) is used to remove varnish. Burning ethanol blended gasoline helps prevent the build up of varnish. The bad rap comes from the switch over from 100% gas to the mix. As ethanol ran through the carb it started cleaning out the varnish, and that varnish plugged up the carbs. It wasn't the ethanol that caused the problem, it was the varnish build up from 100% gas people were using.


The best method for storing power tools is to add stabilizer treatment to the second to last tank of the season and run equipment like normal. Top off the gas tank and add more stabilizer for the winter. The gas will keep over the winter, even with ethanol in it.   
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Roy M

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Re: Fuel mixture for weed wacker
« Reply #19 on: October 15, 2018, 10:02:48 PM »
Ethanol is very hard on diaphragms, gaskets and fuel lines, they deteroriate very quickly. It is hygroscopic, attracts free water, and becomes quite coorosive. Most quality two stroke oils now have stabilizer added to them so more really doesn't do much good.