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Carb screw screwdriver-Great new toy

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soccerdad

soccerdad

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After stripping out another set of the carb screws on the plate that covers the main jet, I went to find an old post on carbs. I found one that said the screws were actually JIC and not Phillips. So I bought this screwdriver http://www.***********/gp/product/B000W9N09M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 on Amazon. It is a JIC +2 size. I just got it and it works GREAT. I pulled the plates off 3 different carbs and they did not even think about camming out. One was really stuck, but the screwdriver really holds great and it pulled it right out. You can tell it fits the screws very well. This one has a big ball on the end that is easy to hold and turn and put a lot of pressure down on the screw. If you do carbs, I would seriously look into getting one. This one was only $12 delivered free in two days with Prime.
 
20.jpg
. A picture of it


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Nice Ill have to buy a couple. I have a favorite set from Northern tool they fit extremely well. I do alot of carbs though so I usually buy a new set once a year for my main set and throw the old ones in other boxes.

For jets I modify some older ones to just the right size with the grinder. Narrow down the sides and make the tip just the right thickness.

21.jpg
 
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Yep, if you google JIC screws, you will see that the difference between the JIC and Phillips heads. Close but very different. The JIC screws are easy to spot. They have the dot in the head next to the cross.
 
Well I had JIC on my brain and it is really JIS. Sorry. Cant edit the posts now for some reason. Also, the link is bad so in Amazon it is a Hozan D-332-100 JIS +2 Ball Grip Screwdriver
 
My Brother and I wore out two Honda Trail bikes. The hammer driven Impact driver never failed us! I did one of my 717 carb's this summer. Screws never had a chance. One minor hammer pop and they were loose! Even with the "right screw driver" the screws are still too tight and have never been taken out. I my case 14 years. Carbs have not been touched in 14 years. Paint was still intact.
 
I just gotta rep Soccerdad for figuring this out. Here I am at 1am cleaning yet another set of carbs and I had a super duper tight one. Gave the new driver a couple hammers and she twisted right out, zero damage to the screw.


If you work on more than one seadoo...these are a MUST HAVE.
 
If I can throw in my 2 cents.....


Yes... it's JIS... not JIC.

Yes... there is some minor differences.

Yes... there is a dimple in the head. BUT over the years, it's not just for JIS screws. You can find that dimple on small metric socket bolts too. So, it's come to be a metric marking. (bigger bolts get the rating on the head)

And finally... YES... the proper tool is always the best to use.




With all that said... do you think that there is any shop mechanic out there, who is using the JIS screwdrivers? If you want to believe they do... that's fine... but I bet if you walk into the back of your favorite shop... you will see normal Phillips.

Also... as the guys above have said... Just use an impact. The reason is... a lot of these older carbs will have corrosion in behind the threads... and it takes that impact force to get it to crack loose. Not to mention... when I would get a set of carbs in my shop, that someone else already messed up... I could normally take the impact bit... set it into the messed up screwhead... tap it in with a hammer... then put the impact on that... and it will bite, and pull the screw out anyway.

I've owned a heavy hand impact for the past 30 years... and it's never let me down. Just like Mickirig1 said... I got mine when I was young, working on dirtbikes. (late 70's Yamaha's for me) And it was the only way to crack the case bolts loose.


So... while the JIS bits are nice... on these little 3mm/4mm screws... the heads aren't formed well enough to make a difference. And because of that... a hand impact is the proper tool for carbs. The only small screws that I've seen that NEED a JIS bit is when they are made out of aluminum.

That's my story and I'm sticking to it !!!!
 
You have a set Tony? I think they fit better than my favorite #2. The impact one has it built in so you dont need to get more tools out. While I agree the old impact works very well, I think these JIS drivers work very good.

I dont think the average guy needs them, but if you do more than a few sets a year I personally think they are a must have.
 
Hey, for $15 on amazon with free shipping, the impact version is a great deal, even if you are going to do just one set of carbs. Besides, I am always looking for more reasons to fill my tool box!
 
love it.... but one question.

why the hell did sea-doo use these? or are they mikuni, and that's why...

like, everything on my jeep was metric, but the axles... which were dana, were standard.

DEATH to standard! MeTriC4Life! etc. etc.
 
Just got mine yesterday, looked just like a plain phillips head but it worked A LOT better!!!
 
SabrToothSqrl said:
love it.... but one question.

why the hell did sea-doo use these? or are they mikuni, and that's why...

like, everything on my jeep was metric, but the axles... which were dana, were standard.

DEATH to standard! MeTriC4Life! etc. etc.
Click to expand...

Mikuni is why, Japanese, JIS = Japanese Industrial Standard (or something like that). Someone posted some interesting info on that recently, cannot remember who.

Seems I recall from way back in the 60s or some such time that there was a United States commitment to be converted to metric by .... what was that date again?
 
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