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Stripped Philips head 10mmimg bolt to remove

ukjules

ukjules

Forum Sage
I have a tough philips head screw that goes in the top of the carburettors to remove.
I am soaking it in WD-40 overnight and I'm having to buy a better impact driver tomorrow.

On four carburettors I have three Phillips head screws that's are in danger of heads being stripped making them impossible to turn.

Any thoughts on slick ways to remove them. ?
I have loads of things to get bolts out but not really these.

I am of course replacing them.all with hex bolts.
 

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I have used 4 inch 'vice grip' locking pliars. No evil damage to screw heads.

If the screws are original...they are not philips. They are JIS. Jules, I figure you do know that. Subtle design difference...but the proper JIS screw driver for the OEM fasteners will probably do the 'trick'
 
Just say'in, pretty sure those screws aren't Philips, but JIS (Japanese Industrial Standard). They are similar to Philips but different... A correct size JIS screwdriver set, or JIS impact bit set, should save you a bunch of headaches, now and later.... Also appears maybe (hopefully) enough room to get a 4" vice-grip to clamp on the edge of that screw.
 
From factory they should be J.I.S screws, not Philips, J.I.S is indicated by a small dot on the screw head usually. Also WD-40 sucks as a penetrating oil, use a proper penetrating oil.

Of-course the proper diamond tipped J.I.S screwdrives helps but I got myself a T-handle years ago and it has saved my ass multiple times, the leverage helps. See photo below for what I mean:
1791229263444.png

As to getting them out, I would try using a sharp chisel and small hammer to get them going.
 
Yep your all right it is jis... I have madly never ever used a jis screwdriver ...... Time I did for sure !!!
Iv only just in seriousness religiously started to use pz ones instead of buggering wood screws with Philips.....

I'll order some ..didn't know you could get them for an impact driver either.

I have just found my old box of things to sort stripped things. I think I can do this with them or with methods suggested
 
Jis bits and t bar ordered .... And jis impact driver bits.
About time too !!! How did I survive so long without ....

Thanks guys
 
All you JIS screwdriver fanboys should read up on cross headed screw standards.
1) JIS standard has been superseded
2) Of all the competing cross head screw standards; JIS is the loosest (meaning you'll find the biggest variation in shape of the tip on JIS drivers compared to the other standards).

A SnapOn Anti-camout P2 driver will take out more cross head screws, easily and neatly, than anything called JIS... and the patent on SnapOn anti camout has expired and you can find them from other manufacturers.
... the truth IS: you need different cross head drivers ... pozidriv is good too. You don't necessarily NEED JIS drivers, you NEED a good selection of decent cross head drivers... that aren't worn out.
(They're cross head screws. Philips is an american trade name. We wouldn't have this problem if Ford used Robertson screws on the Model A... we'd be arguing about JIS square drives. A Robertson is superior to Philips in every way. Ford bought the "Philips" patent when he couldn't buy the patent for Robertson... and that's why you americans think a cross headed screw is called Philips)

Here's a tip that isn't widely known: Use the longest driver you can fit (within reason). It is very easy, when using a short driver, to cant the blade (leading to "cam out"). With a longer driver it is easier to get the tip at 90 degrees to the head. The P2 I use most often is 16-18" long.
I used to rebuild electric motors. If you want to seize a fastener: run electric current through it. I have removed more stuck screws than I want to admit too. It takes practice and decent tools... and the BEST tool is a manual impact driver.
 
Agree with chuck... That's why there's always been sets of allen and hex head bolts available for most all bike engines... I'd bet if they'd came with bolts they'd have never made a screw set to replace them with.
 
Update :
In the end I had to Dremel screw heads to allow a flat impact driver head to take em out. All bolts now out.

Will replace with hex heads and ordered them

I have ordered my first ever jis screwdriver heads , t bar anyway but get what all say. I have enough 80's bikes in fact all my bikes are 80's to make it worth it .......
 
ukjules said:
What planet you on buddy ? I don't like your tone !
I haven't read it and never will either !
I asked a question for debate ! It will be unnecessary for you to ever reply to my threads !
Click to expand...
That attitude is a sure way to NOT get answers to your questions. Maybe you need to do some research before you fill up the forum with questions that have been answered already.

An excellent starting point for anything to do with carbs is the Carb Rebuild Tutorials!

I'm glad there is an ignore option on this forum!:p
 
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