Chewed carb screws

[donkeydoo]

Next job in the coming weeks whilst I have it in bits will be to sort out the darn chewed carb screws. I have been soaking them every now and then in penetrating oil, have not yet tried to remove them only gently and stopped straight away.

Any tips would be much appreciated, am getting quite handy with the drill on this bike so guess I may have to use it on these too.

cheers

 

[Robbi]

Gently tap a straight screwdriver into the buggered hole whilst twisting at the same time

 

[Pip5ter]

A couple of gentle taps on the screwdriver with an hammer might help if you haven’t already tried that…


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[MickDB1]

If yer can tap the heads of the pozidrive back down to get yer square back then use PLUSGAS to help release it along with maybe leaving a soldering iron on top of screwhead to warm it up and expand it. good luck

 

[Gelandestrasse]

I might have some replacements for those, too....

 

[Vern]

You need these. Work every time if you can get straight onto the offending screws and you have a drill with reverse

https://www.ebay.co.uk/itm/17466344...2Bj6foK12Q%3D%3D|clp:2334524|tkp:BFBMnPbF-Jpf

 

[Robbi]

You need these. Work every time if you can get straight onto the offending screws and you have a drill with reverse

https://www.ebay.co.uk/itm/17466344...2Bj6foK12Q%3D%3D|clp:2334524|tkp:BFBMnPbF-Jpf

Think I need to get some of those

 

[kettle738]

If you can tap the top of the screw enough to restore the cross head profile a little and have an impact screwdriver with a bit that fits those screws, dip the tip of the bit in some coarse grinding compound and turning the impact by hand only (don't hit it) you can exert a lot of pressure and the grinding compound helps the bit grip the screw...... it worked for me on a mates Z650 seized tank badge screws that he had completely buggered....... all four were properly stuck but came out in short order.

Mick.

 

[Big Si]

Another trick is to buy some cheap torx bits, oversize in this case, tap them in and ease the screw backwards and forwards using a 10mm spanner on the end of the bit to ease it, then unscrew them.

 

[Beemerboff]

The Torx trick worked for me, bur I drilled a short hole to get a bit better grip with the bit.

 

[g.s.john]

Try dipping the screwdriver head in some valve grinding paste that gives it some grip.

 

[id30209]

It happend to me as well. I drilled them all, carefully not to damage housing. They were replaced by SS screws which won’t get chewed up even if high torque applied.


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[scooter paul]

Copied from a FB group. Use an open ended spanner to turn the screwdriver bit.

 

[Vulpine2]

^^^^ clever...

 

[barny]

Good idea and it takes all the load so shouldn't damage the casting.

 

[ChasF]

2.5mm, maybe 3mm drill with a dremel, then old Tx15 screwdriver bit pushed on with a g clamp as above.

 

[donkeydoo]

Copied from a FB group. Use an open ended spanner to turn the screwdriver bit.

This will be my first and then shall move onto other suggestions shall let you know how I get on.

 

[Gelandestrasse]

The WD40 brand penetrant is IMHO the best on the market. It should eat the corrosion holding those screws at bay.

https://www.eurocarparts.com/p/wd-4...MIvN6tu5r_8wIVgdPtCh2g7w6GEAQYAyABEgI-r_D_BwE

 

[Bear]

It's cheaper at Halfords: https://www.halfords.com/motoring/e...44BRER97*MTYzNjA1MDIzOS4xLjEuMTYzNjA1MDI0MC4w

 

[donkeydoo]

Got some RP-90 on the shelf cheaper still, not sure if it's as good or better.