JIS Mythbusting

[Morrisman]

I forget which is which now, but use the wrong type of tip and the first thing that contacts is the point of the screwdriver, leaving a gap all around the driving faces.

 

[premmington]

Another tool you didn't know you needed is a Shake N Break which uses an air hammer to provide the percussive force while while you control the rotation with the side bar.

Used one - nothing to hand impact drivers of old...

 

[Bdog507]

I bought some JIS impact rated bits for my hammer powered impact driver I bought in the 70's when I first started tinkering with Jap bikes.

It still makes a guest appearance when nothing else will work.

View attachment 520452

I have a good old impact driver. Likewise it still makes the occasional appearance for use on sturdy things.
I had a customer who once tried to remove the float bowl screws on some Honda carbs with one. Errrrrrr you can guess the rest!


Cheers.


Stewart.

 

[Bdog507]

Another tool you didn't know you needed is a Shake N Break which uses an air hammer to provide the percussive force while while you control the rotation with the side bar.

I have a similar tool called Vibro Shock, (which sounds like it belongs in an Ann Summers catalogue).
It's been pretty effective when I've used it on both nuts & screws. Although one has to have an air hammer with a progressive trigger. Aln 'all or nothing' trigger could end in disaster.
I get it out when all other methods have failed.


Cheers.


Stewart.

 

[ukracer]

Whoops; I've no idea how I did that. I've fixed it now.

Ah Ah nothing to do with the cloudfare outage that caused mayhem with Makerworld amongst a lot more places.

 

[ukracer]

Another tool you didn't know you needed is a Shake N Break which uses an air hammer to provide the percussive force while while you control the rotation with the side bar.

And if that doesn't worth you could use it as a drill to drill it out. Lol

 

[Keithmac]

I do more work on Carburettors now than ever, as Carbs have become one of the dark arts it would appear. The screws can be a right sod to remove! Especially if they've never been apart before.

I recently had to sort out a set from a 1985 Suzuki 750 Katana. Unfortunately the owner had already had a bash at them.
Not only had his 'Sunday market' screwdrivers rounded off most of the float bowl screws, he'd also had a go at the mounting frame screws that hold the carbs together.
I managed to get most of them out using some excellent hefty pliers end on, but on a few of the screws I had to mill the heads off, & get the threaded part out once the carbs were apart.

It didn't half add to the bill somewhat!


Cheers.


Stewart.

Snap-On Lineman pliers are good if you can get access, just to turn the head enough to release the friction on the screw.

I've used impact screwdriver on very rare occasions on carbs but you have to be very careful!.

Personally I replace the screws with m4 Allen bolts on reassembly but have to check first as some customers want them totally original.

 

[Cobbler]

Another tool you didn't know you needed is a Shake N Break which uses an air hammer to provide the percussive force while while you control the rotation with the side bar.

I made one of those out of a broken Pozi screwdriver & a air chisel bit, it worked ok, until I broke the shaft of the screwdriver.

 

[Bdog507]

Snap-On Lineman pliers are good if you can get access, just to turn the head enough to release the friction on the screw.

I've used impact screwdriver on very rare occasions on carbs but you have to be very careful!.

Personally I replace the screws with m4 Allen bolts on reassembly but have to check first as some customers want them totally original.

Snap-On Lineman pliers are exactly the ones I use. I have both the 7 & the 9 inch ones.
They're expensive, but no other pliers come close when using them end on.

You're right about folks wanting them to look original. So I keep a stock of the original type of screws with the integral spring washer in 12 & 16mm lengths.


Cheers.


Stewart.

 

[jack-daniels]

Snap-On Lineman pliers are exactly the ones I use. I have both the 7 & the 9 inch ones.
They're expensive, but no other pliers come close when using them end on.

Snap-On Lineman pliers are good if you can get access, just to turn the head enough to release the friction on the screw.

Have you guys tried the Knipex Twingrips for screw removal?

https://www.knipex.com/twingrip/

Or

Engineer

Screw Removal / Screw Extractor | ENGINEER INC. -Global-

Screw Removal Pliers, Rapid Screw Extractor, etc. Innovative and patented pliers for removing stripped or rusted screws and fastners just in seconds! Try our Neji-Zaurus series PZ-55 PZ-56 PZ-57 PZ-58 PZ-59 PZ-60 PZ-64 PZ-65 PZ-77, PZ-78, PZ-79, PZ-22 DBZ-20 DBZ-60G

www.engineertools-jp.com

 

[Bdog507]

Have you guys tried the Knipex Twingrips for screw removal?

https://www.knipex.com/twingrip/

View attachment 520693



Or

Engineer

Screw Removal / Screw Extractor | ENGINEER INC. -Global-

Screw Removal Pliers, Rapid Screw Extractor, etc. Innovative and patented pliers for removing stripped or rusted screws and fastners just in seconds! Try our Neji-Zaurus series PZ-55 PZ-56 PZ-57 PZ-58 PZ-59 PZ-60 PZ-64 PZ-65 PZ-77, PZ-78, PZ-79, PZ-22 DBZ-20 DBZ-60G

www.engineertools-jp.com

I've not tried either of those. They may well be worth a look.
The main issue with the Snap-On Lineman's pliers is that they're a trifle bulky, & when one is trying to grip say a float bowl screw there might only be a few degrees of movement before the plier jaws are up against the float bowl.

A good head's up. Thank you.


Cheers.


Stewart.

 

[Erie Fred]

I like Torx screws.......

 

[Jackimus]

I like Torx screws.......

In the alternate reality where I am god emperor of the world, everything is made with Torx fastenings on pain of death.