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Very tight JIS screws 29 Jun 2023 19:33 #886640

  • ckahleer
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I could not get the timing plate adjustment screws loose on my kz400. Not even with my Vessel and Craftsman inpact tools. Just boogered up the heads more.
Back in January, I bought a pair of Vampliers that I never used. They got all 3 adjustment screws out. Great tool.
www.amazon.com/gp/product/B08P64T6NQ/ref...05_s00?ie=UTF8&psc=1
94 KE100
81 CM200t
82 KZ305
85 VT 500c
85 VF1100c
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Very tight JIS screws 29 Jun 2023 20:22 #886642

  • sf4t7
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I've heard of them before, but never found anyone who had used them.  Now I'm gonna get me a pair.  

Scotty
Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1

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Very tight JIS screws 30 Jun 2023 12:13 #886665

  • blipco
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I have a 1/2 inch impact gun but for small screws such as what’s on float bowls I use my Milwaukee impact screw gun. The trick is making a standard 1/4 inch hex #2 bit act like a JIS bit. I do this by filing down the end of the brand new #2 bit so that it doesn’t cam out. And it works as long as I hold the bit firmly and square to the work. 
"Swim against the current, even a dead fish can go with the flow"-somebody (I forget Who)

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Very tight JIS screws 30 Jun 2023 23:29 #886678

  • Kidkawie
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Unless you need the hex driver, there's no reason to buy special jis bits.  They come in practically every Japanese bike tool kit.
Second, internal engine screws most likely have locktite, so use some heat.  The countersunk bearing retainers can be a pain.
Any stubborn screw that you get a hold of, I use a set of battery pliers (see link) that I ground the tips to more of a point.  They grab 10x better than vice grips and the fastener is usually junk after.

STEELMAN 77020 Battery Terminal Pliers a.co/d/dEbGJpq
1975 Z1 900
1994 KX250 Supermoto
2004 KX125

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Very tight JIS screws 01 Jul 2023 06:07 #886683

  • slmjim+Z1BEBE
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I could not get the timing plate adjustment screws loose on my kz400. Not even with my Vessel and Craftsman inpact tools. Just boogered up the heads more.
Back in January, I bought a pair of Vampliers that I never used. They got all 3 adjustment screws out. Great tool.
www.amazon.com/gp/product/B08P64T6NQ/ref...05_s00?ie=UTF8&psc=1

 
We're hopeless tool junkies. 

EDIT: (Well, slmjim is anyway... )

We have a set of three VamPlires. They are some of the highest quality tools we've ever seen.  They are available individually, and also come in a set of three, different sizes & slightly different jaw designs.  If you appreciate very-high-quality tools, you won't be disappointed with any VamPlire tool.

Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.

1972 Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A

www.kawasaki-z-classik.com
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

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Last edit: by slmjim+Z1BEBE. Reason: SWMBO edit

Very tight JIS screws 02 Jul 2023 06:26 #886731

  • Michi
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I got them out in the end. I tried the JIS bits on an impact driver, but the screws were so tight the heads just got chewed.
I cut a big, deep slit in them with an angle grinder, then gave them a few more whacks with the impact driver with the biggest flat-head bit. They came out easily. Piece of cake!
KZ440A LTD (1980)
The following user(s) said Thank You: SWest, Mikaw, Wookie58

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Very tight JIS screws 02 Jul 2023 06:34 #886732

  • sf4t7
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Adapt and overcome.   

Scotty
Scotty

1974 Z1A
1015
welded Z1 crank
Andrews 1X Cams
Delkevic 4 into 1
The following user(s) said Thank You: Nessism

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