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Steve-F 
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Location: Ohio
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 Topic: WD-45 Spark Plug Type????
Posted: 08 Apr 2018 at 4:18pm |
What brand model of spark plugs should I buy for my WD-45 and what gap should they be set at?
Thanks, Steve
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EPALLIS
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Location: Illinois
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Posted: 08 Apr 2018 at 8:07pm |
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Probably a lot of debate about this topic. Nevertheless, I always used AC-45 spark plugs. For gap I always set about .035. Basically because the owners manual said gap them .030-.040. I never had any issues with that plug or gap so it must be somewhat reliable information.
Hope that helps. Thanks.
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dawntreader74
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Posted: 08 Apr 2018 at 10:52pm |
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yes the AC-45 plug works the best; but the 35 gap is to big' works the best at less then 30' like 28 is more like it on a wd or wd45 d17 an so on little hotter worked better fore me on working tractors.
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SteveM C/IL
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Posted: 08 Apr 2018 at 11:48pm |
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My WD & 45 have had AC45's forever gapped at .035.Never had a problem. All I'm saying is,it works for me. The WD has been here since new in 49.
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dawntreader74
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Posted: 09 Apr 2018 at 1:33am |
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steve; if it works' thats all that matters; it's hard to fine good fuel now a days also.
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SteveM C/IL
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Posted: 09 Apr 2018 at 11:13am |
 dawntreader74 wrote:
steve; if it works' thats all that matters; it's hard to fine good fuel now a days also. |
For sure! Mine comes off the delivery truck so I'm often burning 6-8 month old gas and I can no longer get non alcohol fuel. It's a wonder anything around here runs.
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DougS
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Posted: 09 Apr 2018 at 8:28pm |
SteveM C/IL wrote:
dawntreader74 wrote:
steve; if it works' thats all that matters; it's hard to fine good fuel now a days also. |
For sure! Mine comes off the delivery truck so I'm often burning 6-8 month old gas and I can no longer get non alcohol fuel. It's a wonder anything around here runs. |
Does your premium contain ethanol? Usually it doesn't, but you'll pay for it. AVGAS won't contain ethanol either, but you'll really pay for it.
Edited by DougS - 09 Apr 2018 at 8:29pm
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SteveM C/IL
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Posted: 09 Apr 2018 at 9:30pm |
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I don't know but would be surprised if bulk truck offers premium.
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dawntreader74
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Posted: 09 Apr 2018 at 10:08pm |
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helps a lot to put a few gallons of 110 race gas in a tank' to brighten it up some' sure can tell it's there ' helps blow the cobs out
Edited by dawntreader74 - 09 Apr 2018 at 10:09pm
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DougS
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Posted: 10 Apr 2018 at 5:43am |
SteveM C/IL wrote:
I don't know but would be surprised if bulk truck offers premium. |
I don't know which supplier would and which wouldn't. If the supplier also has filling stations that have premium, the odds are they'll bring it to you in bulk too.
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SteveM C/IL
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Posted: 10 Apr 2018 at 8:20am |
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They do bulk only.The pumps in town came out years ago.
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DougS
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Posted: 10 Apr 2018 at 8:43am |
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Call them. You might be surprised. You may have to make a minimum order, though. I use to order number 1 diesel, but had to take a 300 gallon minimum.
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Brian G. NY
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Posted: 10 Apr 2018 at 10:19am |
Both my WD and WD-45 Operator's Manuals state plug gap should be set .028" to .032". I "shoot for" .030! Point gap is .020" for both a mag or a distributor.
Edited by Brian G. NY - 10 Apr 2018 at 10:21am
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SteveM C/IL
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Posted: 10 Apr 2018 at 1:47pm |
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I have in front of me the "operating instructions maintenance and repair parts illustrations" for AC WD tractor that came with dad's new WD in 1949.No copyright date. It says .030-.040 for plugs.Keep in mind this used a mag. Also says use Autolite AN7 or AC45 plugs for gasoline and Autolite A11 or AC47 for low octane fuel.
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Steve-F
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Posted: 10 Apr 2018 at 5:07pm |
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Thanks for the replies guys! Where can these AC45 plugs be purchased? Called NAPA today and they do not sell them.
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chaskaduo
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Posted: 10 Apr 2018 at 5:33pm |
I see them on ebay, $$$!!! 
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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archangel_cpj
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Posted: 10 Apr 2018 at 7:18pm |
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Looks like advanced auto Carrys the....
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dawntreader74
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Posted: 10 Apr 2018 at 7:37pm |
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farm+fleet store has ac45's ac46 also.
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Dan Hauter
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Posted: 10 Apr 2018 at 7:48pm |
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You guys are a wealth of info. Thanks. What about a WC or WF? Same spark plug recommendations?
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Clay
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Posted: 11 Apr 2018 at 10:05am |
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Brian G. NY
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Posted: 12 Apr 2018 at 10:38am |
SteveM C/IL wrote:
I have in front of me the "operating instructions maintenance and repair parts illustrations" for AC WD tractor that came with dad's new WD in 1949.No copyright date. It says .030-.040 for plugs.Keep in mind this used a mag. Also says use Autolite AN7 or AC45 plugs for gasoline and Autolite A11 or AC47 for low octane fuel. |
For the heck of it, I looked at my WC manual which shows a picture of a mag in the text and it gives the plug gap as .030" - .040".
My conclusion, plugs on tractors with mags should be set at .030" - .040" and tractors with distributors should be set at .028" - .032".
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