A Wizard Rototiller spark plug question...

Discussion in 'Mechanic and Repair' started by wildncrazyguy, Feb 1, 2008.

  1. wildncrazyguy

    wildncrazyguy LawnSite Member
    Messages: 37

    Made back in the old days, I'm guessing 70's and sold by Western Auto. Well, I'm trying to find out what spark plug it takes and had some spark plug questions as well. This one is real hard... sorry for the length. I found out in the owner's manual it takes a Western Auto stock number something plug. (Manual not handy right now.) Guess what. Nothing crosses to it now. I did look up the Briggs and Stratton engine model number (5 HP) and found on B&S website a part number for the plug. The magic number is... 298809, which apparently is so old it has been replaced by 802592S. Apparently the 802592S B&S plug is in a league of its own because I can't find anyone, Champion, NGK, Bosch, etc. that will cross it. I've seen some sites say a Champion RCJ8 and some say a Champion RJ19LM. Two different plugs...

    Leads me to my quest for help. This is a tiller (old) so if I get a R plug, does it matter? R = Resistor. From what I've read about resistor plugs it cancels the radio frequency build up that may cause issue with electronics (in autos mainly, etc.), but this is an old tiller, might not need an R, but will an R cause issues? Now, after saying all that, I would like to get either a RCJ8 or a RJ19LM because I have other stuff that uses those plugs and those manuals say to use them. Since my tiller manual is so old, and references a Western Auto part number that likely does not exist anymore, would it matter if I used a resistor plug or not in a little old tiller?

    After all that. The plug in it right now is an Autolite 255. Of coarse, non resistor, but I don't know if it's been in there all these years or not... I acquired the tiller from an uncle that worked on small engines most his life, so who knows what the original spark plug was? Probably the Western Auto part number, hee hee.

    So, to sum up. Would a resistor plug matter in an old tiller? I would like to get one as I have other equipment that take the RCJ8 or RJ19LM so I can limit my plug purchases to just 2 or 3 different types, but if it will screw it up I can expand my plug inventory if necessary. I don't have anything against Autolite, but it's the only oddball in my "fleet" of small engine equipment. Also, do you think those plugs are the equivilant of the B&S 802592S or what's the best guess on a cross? I'm just wanting to replace it with the right thing and I don't want to burn up something that has been running great for so many years by putting a plug that's not right for it. Since it has been in the family so to speak for all this time, it's kind of sentimental you know... 'Coarse it could blow up tomorrow anyway...

    Sorry to ramble, but another question I have is does anyone know the difference between the Champion RC12YC (leaf vac) and the Champion QC12YC (chipper/shredder)? Something about EMI. I'm thinking Electromagnetic Inteferance... Can I just buy one plug or the other for these? I don't have the manual for the chipper/shredder, but the leaf vac is about two years old and definitely came with the Champion RC12YC. When I buy them, would like to just buy the RC12YC unless you think I need to stick with a QC12YC in the MTD chipper/shredder, both B&S by the way.

    Thanks in advance for any help on probably such an easy topic. I just don't know much about plugs and it seems everything I have currently has something different in it. I'm planning on doing some PM and am wanting to take advantage of buying as few types of plugs as I can. Hope that makes sense.
  2. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 965

    The 298809 is equivalent to a CJ8

    RE the Q vs R. On a Briggs engine, I wouldn't worry about it. On an automotive application, I would.
  3. wildncrazyguy

    wildncrazyguy LawnSite Member
    Messages: 37

    Thank you Bill. Appreciate the reply and help. Just a dumb question about the CJ8. I can use the RCJ8 if I want, right. Probably don't need the resistor for that tiller, but it shouldn't hurt anything, right? Am I understanding the resistor part right? It just cancels radio frequency build up from what I've read, but that shouldn't cause me any grief on a tiller... ? Thanks again.
  4. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 965

    Although I'd prefer a "non R", I wouldn't worry about the "R", if I already had the plug in hand. It's just a tiller. You aren't going to "hurt" anything by using an R.
  5. wildncrazyguy

    wildncrazyguy LawnSite Member
    Messages: 37

    Thank you sir. See I've got a Stihl trimmer that the manual says use a RCJY8, so I'm definitely getting that one. Now I can just find an RCJY8 at the store, get 2 and be on my way. Trying to consolidate and this tiller was my oddball. Now I can buy a few of each plug and have extras on hand for next time or if a plug issue comes up, I'm not trying to go find plugs again, or worst case scenario I lose or sell a device and have a couple of plugs left with nothing to do with them. This assurance you just gave me takes me down to 4 types of plugs to stock so to speak. Champion RCJY8, Champion RC12YC, Champion RJ19LM, and Bosch WSR6F, all pretty common, easy to get plugs.

    Thanks again!
  6. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

  7. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 965

    The Y adds a different dimension. A J8 and a J8Y are 2 very different plugs! Y is extended tip. You can't really compare heat ranges either, since they are 2 different families.
  8. wildncrazyguy

    wildncrazyguy LawnSite Member
    Messages: 37

    Sorry. Brain Fa**... I don't know where I came up with the RCJY8. :confused: I meant to say... RCJ8. Again, Thanks for the help. Great forum.
  9. dannyland3

    dannyland3 LawnSite Member
    Messages: 6

    hey,i am looking for a manual for a wizard tiller i have model GIS 2120 A97 i don't now what you manual covers but if any one now-es where i can get one or a copy i would appreciate it
  10. jkason

    jkason LawnSite Senior Member
    Messages: 546

    The original plug crosses to a Champion CJ8.
    However, if this thing loads up with carbon, switch to a J19LM (with or without the "R").

    It burns a little hotter and will keep the carbon down.

    The only way your'e going to find a manual for that tiller is if someone somewhere finds one in their house somewhere. None available from the manufacturer (Western Auto/MTD).

Share This Page