JIS Screwdriver sizes

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  • Gibbelstein
    • Jan 2026

    #1

    JIS Screwdriver sizes

    I am trying to get the stator cover off and (no surprise) haven't been having much luck with my philips bits. I haven't been able to find any JIS screwdrivers locally, but I have seen the links provided by others on this site.

    Can anyone tell me what size the case screw heads are? There are a couple of kits on the http://www.rjrcooltools.com/shop_ite...?subcat_ID=138 site and I don't want to spend the cash to order them in only to find out they are not the right size. On that site, they have a 'motorcycle' kit with a #1, #2, and #3 screwdrivers, or a 5 piece kit that goes from #00 to #2.

    If someone can help me ensure I won't be wasting my time and money waiting for the wrong kit, I would appreciate it.

    Chris
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35784
    • Torrance, CA

    #2
    You need an impact driver. Sears Craftsman makes a good one. A #3 bit fits well into the screws. Use a nice heavy hammer too.
    Ed

    To measure is to know.

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    Comment

    • GateKeeper

      #3
      here







      and all of the results from search



      and what Nessism says, get an impact driver as well

      Comment

      • Joe Nardy
        Forum Guru
        GSResource Superstar
        Past Site Supporter
        • Jul 2003
        • 5849
        • East Tennessee

        #4
        Looking at mine I would guess #2 for cover screws, maybe #3. Definitely nothing smaller.

        Joe
        IBA# 24077
        '15 BMW R1200GS Adventure
        '07 Triumph Tiger 1050 ABS
        '08 Yamaha WR250R

        "Krusty's inner circle is a completely unorganized group of grumpy individuals uninterested in niceties like factual information. Our main purpose, in an unorganized fashion, is to do little more than engage in anecdotal stories and idle chit-chat while providing little or no actual useful information. And, of course, ride a lot and have tons of fun.....in a Krusty manner."

        Comment

        • Gibbelstein

          #5
          Nessim, Thanks for the suggestion. I have a smaller impact driver from HF that wasn't doing the job. I'll consider an upgrade.

          Joe, Thanks for the extra set of eyes. I thought they looked awfully large, so if I place and order I'll probably go with the 1,2,3 set.

          Comment

          • cowboyup3371
            Forum LongTimer
            Past Site Supporter
            • Apr 2010
            • 13996
            • In Ohio Now

            #6
            That HF impact will do fine but you'll want the better bits from Sears. I have the same one and that is what I did the day after I bought it and chewed up the tips on the first three screws.
            Cowboy Up or Quit. - Run Free Lou and Rest in Peace

            1981 GS550T - My First
            1981 GS550L - My Eldest Daughter's - Now Sold
            2007 GSF1250SA Bandit - My touring bike

            Sit tall in the saddle Hold your head up high
            Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
            and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

            Comment

            • tkent02
              Forum LongTimer
              Past Site Supporter
              • Jan 2006
              • 35571
              • Near South Park

              #7
              Actually the small one from HF won't do much except on tiny screws. The normal size one works OK with better tips.
              http://img.photobucket.com/albums/v5...tatesMap-1.jpg

              Life is too short to ride an L.

              Comment

              • Road Rash

                #8
                Autozone had a decent one for $9.99. I bought one and it's proven to be invaluable. Just used it on my stator cover and made pretty easy work of it.

                Comment

                • Gibbelstein

                  #9
                  I could hear it taunting me from my living room...

                  So, I bought the one at Sears and a 4lb dead blow from HF. It is ridiculous how well that worked. I had the bigger HF driver a couple of years ago, and it didn't work for me nearly as well as the one I got tonight, if that's helpful to anyone who might stumble across this in a search...

                  Thanks, everyone for the input!

                  Comment

                  • Guest

                    #10
                    Originally posted by Gibbelstein
                    I am trying to get the stator cover off and (no surprise) haven't been having much luck with my philips bits. I haven't been able to find any JIS screwdrivers locally, but I have seen the links provided by others on this site.

                    Can anyone tell me what size the case screw heads are? There are a couple of kits on the http://www.rjrcooltools.com/shop_ite...?subcat_ID=138 site and I don't want to spend the cash to order them in only to find out they are not the right size. On that site, they have a 'motorcycle' kit with a #1, #2, and #3 screwdrivers, or a 5 piece kit that goes from #00 to #2.

                    If someone can help me ensure I won't be wasting my time and money waiting for the wrong kit, I would appreciate it.

                    Chris
                    Once you get those phillip screws out, replace all your fasteners with SS socket (allen head) fasteners. Z1 Enterprises has fastener kits for most GSs.

                    Comment

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