TRC is primarily funded by ad revenue. If you like the content you find here, don't block the ads check them out instead. Thank you.
Results 1 to 12 of 12

Thread: Float Bowl screws

  1. #1
    Not Much To Do
    Join Date
    Dec 2016
    Posts
    617
    Like
    83
    Liked 314 in 157 posts

    Default Float Bowl screws


    TRC is primarily funded by ad revenue. If you like
    the content you find here, don't block the ads check
    them out instead. Thank you.
    Tight as fuck ones...
    Visited the Boy out in Oz , and carried out a service on a Bike he's had for a couple of months.
    Old School GS500.
    Basically showing the Lad Filters and Oil change , but thought as the Bike is 12 years old , a good Carb clean would be useful.
    Shift the screws on the bowls ? Could I bollocks.
    If it were mine and back here and not needed as daily transport , then I know I could have fix them.
    Decided to leave them and is down to do on the next visit when Ill be tooled up.
    But what's your technique ?

  2. #2
    Should Get Out More KungFooBob's Avatar
    Join Date
    Aug 2012
    Location
    The Forest Moon of Endor
    Posts
    18,055
    Like
    447
    Liked 8,253 in 4,658 posts

    Default Re: Float Bowl screws

    Use the correct screwdriver. if that doesn't work, cut a slot and use a flathead.

    Once they're off, replace them with allen headed ones.

  3. #3
    Should Get Out More Julian_Boolean's Avatar
    Join Date
    Jan 2008
    Location
    1985
    Posts
    16,916
    Like
    1,359
    Liked 3,847 in 2,368 posts

    Default Re: Float Bowl screws

    Use a JIS screwdriver, it makes a massive difference on Mikuni carb screws.
    But I assume we're talking rounded out chewed up heads by now, if you can get a pair of mole grips on them that will usually undo them, a good squirt with penetrating oil the night before won't hurt either.

  4. #4
    At Work iansoady's Avatar
    Join Date
    Feb 2008
    Location
    Birmingham
    Posts
    1,217
    Like
    144
    Liked 315 in 160 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by Julian_Boolean View Post
    Use a JIS screwdriver, it makes a massive difference on Mikuni carb screws.
    Absolutely. Much of the misplaced criticism of cross-head screws stems from using the wrong ones. But they're not cheap and as far as I know only Vessel make them.

    I have to confess that it took me more than 40 years to find this out.

  5. #5
    Should Get Out More Taipan's Avatar
    Join Date
    Dec 2007
    Location
    Boerthal's hill
    Posts
    49,251
    Like
    17,954
    Liked 11,316 in 5,905 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by Julian_Boolean View Post
    Use a JIS screwdriver, it makes a massive difference on Mikuni carb screws.
    But I assume we're talking rounded out chewed up heads by now, if you can get a pair of mole grips on them that will usually undo them, a good squirt with penetrating oil the night before won't hurt either.
    Quote Originally Posted by iansoady View Post
    Absolutely. Much of the misplaced criticism of cross-head screws stems from using the wrong ones. But they're not cheap and as far as I know only Vessel make them.

    I have to confess that it took me more than 40 years to find this out.


    The one in a bikes tool kit will be better at this than your best snap on if its not JIS.

  6. #6
    Should Get Out More maccecht's Avatar
    Join Date
    Jan 2008
    Location
    South East England Kent.
    Posts
    6,891
    Like
    182
    Liked 1,015 in 568 posts

    Default Re: Float Bowl screws

    Impact driver first choice. Second choice cut a slot with a dremmel for a flat blade screwdriver then replace the M4 screws

  7. #7
    Should Get Out More nidge's Avatar
    Join Date
    Jan 2008
    Location
    Oxford
    Posts
    6,242
    Like
    1,829
    Liked 2,513 in 1,125 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by iansoady View Post
    Absolutely. Much of the misplaced criticism of cross-head screws stems from using the wrong ones. But they're not cheap and as far as I know only Vessel make them.

    I have to confess that it took me more than 40 years to find this out.
    US Pro do a set for about 12 now (available from Amazon too) https://www.tools2udirectsw.com/us-p...16-19394-p.asp

  8. #8
    Not Much To Do
    Join Date
    Dec 2016
    Posts
    617
    Like
    83
    Liked 314 in 157 posts

    Default Re: Float Bowl screws

    Yes to you all. I knew all that. Thought that my usual technique of putting a left turn pressure on a pozi and tapping with a hammer would work. No chance. Gave up at 2 partially knackered screws. More time would have been nice but the Itinerary to be an Outback Trucking Gold Digger didn't allow.
    So it's 8 allens and a JiS on the next trip

  9. #9
    Should Get Out More Taipan's Avatar
    Join Date
    Dec 2007
    Location
    Boerthal's hill
    Posts
    49,251
    Like
    17,954
    Liked 11,316 in 5,905 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by maccecht View Post
    Impact driver first choice. Second choice cut a slot with a dremmel for a flat blade screwdriver then replace the M4 screws
    I had a SV 650 that had absolutely mulled float bowl screws. Every single one of them has a mess where a screw driver used to fit! I was lucky they all undid witha sharp tap from the impact driver, although God knows how. It was only then I realised I didn't have any replacements and had to put them back in as I needed the bike for work the next day! I did order some Allan bolts up and fit them though!

  10. #10
    Should Get Out More
    Join Date
    Dec 2007
    Location
    A windswept Hebridean paradise.
    Posts
    22,774
    Like
    1
    Liked 4,524 in 2,615 posts
    Blog Entries
    8

    Default Re: Float Bowl screws

    You can reshape the screws heads with a reasonable level of success. Screw them into a bolt and tap the chewed up bits flatter with a hammer, then tap the correct screwdriver bit it. Not perfect, but they'll work until you can get replacements.

    Needs must when you live some way from a spares outlet.

  11. #11
    Should Get Out More 1888's Avatar
    Join Date
    Mar 2010
    Location
    JockLand
    Posts
    27,302
    Like
    913
    Liked 2,978 in 2,128 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by KungFooBob View Post
    Use the correct screwdriver. if that doesn't work, cut a slot and use a flathead.

    Once they're off, replace them with allen headed ones.
    That is my route also

  12. #12
    At Work iansoady's Avatar
    Join Date
    Feb 2008
    Location
    Birmingham
    Posts
    1,217
    Like
    144
    Liked 315 in 160 posts

    Default Re: Float Bowl screws

    Quote Originally Posted by Nobbynumbnut View Post
    Thought that my usual technique of putting a left turn pressure on a pozi and tapping with a hammer would work.
    Pozidriv is the worst possible choice as it has extra ridges that prevent it from engaging anything like properly with the screw head. There's a rough hierarchy: JIS works for Phillips which works for Pozidriv but not in the reverse order. And when I say "works" that is "sort of" not completely.

Go Back to Forum My Forum

TRC Affiliates - Help TRC make a small amount of commission