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Shimano Front Derailleur Screwdriver ?

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Shimano Front Derailleur Screwdriver ?

Old 07-17-20, 10:18 PM
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frogman
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Shimano Front Derailleur Screwdriver ?

Does Park make a special screwdriver for adjusting Shimano front derailleur screws ? I have tried phillips and have ended up using a small flat blade screwdriver. Not very good but it works. It looks like a small flat screwdriver with a round pointed center would be the thing needed.
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Old 07-17-20, 10:50 PM
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I use a number 2 phillips head, it helps to back off some cable tension before adjusting the limiter
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Old 07-17-20, 11:00 PM
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You need a JIS screwdriver. https://www.vesseltools.com/handtool...trial-standard Various mfrs and levels of quality available. Much harder to strip out "JIS-Philips" heads with these. Works on all Asian screws.
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Old 07-17-20, 11:36 PM
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A JIS phillips. Makes sense for a Japanese derailleur
I have a set of JIS screwdrivers. Hadn't thought of using them. I use them for removing the cabinet screws on Yaesu ham radio cabinets so I don't round out the screw heads.
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Old 07-18-20, 03:06 AM
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Would it help if you replaced the screws with DIN 912 or 913 with hex socket, like what SRAM uses?
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Old 07-18-20, 04:23 AM
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I believe that Park offers something like that -- why don't you check Park's webite and find out for yourself instead of asking strangers on the internet? PRO TIP: I've never tried this but many have said you can just grind down the tip of an ordinary Phillips, and it works well enough.
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Old 07-18-20, 05:26 AM
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Originally Posted by frogman View Post
I have a set of JIS screwdrivers.
Sounds as if you are good to go
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Old 07-18-20, 05:27 AM
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Originally Posted by onyerleft View Post
I believe that Park offers something like that -- why don't you check Park's webite and find out for yourself instead of asking strangers on the internet? PRO TIP: I've never tried this but many have said you can just grind down the tip of an ordinary Phillips, and it works well enough.
Maybe you forgot what the purpose of a bicycle forum is especially in the Bicycle Mechanics sub forum. To add insult to injury, you (the stranger) give advice on grinding down a screwdriver. You answered the question from the OP that you specifically told them not ask. This is mind boggling.

Back to regular programing.

JIS screwdrivers are the proper tool as reported above by the nice strangers. Though the Park Tool one is expensive.
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Old 07-18-20, 05:41 AM
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Originally Posted by onyerleft View Post
PRO TIP: I've never tried this but many have said you can just grind down the tip of an ordinary Phillips, and it works well enough.
Hmm, close-ish, but not as good as JIS. At least with the ones I tried with.
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Old 07-18-20, 06:01 AM
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It also helps if you relieve the spring pressure on the screw by pushing/pulling the derailleur by hand while making the adjustment, instead of trying to use the screw to drive against the force of the spring. But the correct JIS screwdriver or or swapping the screws for socket head is the best in any case.
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Old 07-18-20, 08:01 AM
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Originally Posted by blakcloud View Post

JIS screwdrivers are the proper tool as reported above by the nice strangers. Though the Park Tool one is expensive.
Yes, the Park JIS screw driver is expensive. But you can get JIS bits for magnetic screw drivers. I just recently went that direction and have to say the screwdriver works much better.
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Old 07-18-20, 08:11 AM
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I tried using a JIS phillips screwdriver as suggested and it works perfectly. Thanks for all the reposnses every one.
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Old 07-18-20, 09:41 AM
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Great information here. Never heard of this before.
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Old 07-18-20, 10:43 AM
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Not so much on derailleur screws, but on electronics items and many others, JIS screws can be recognized by a dot or dimple on the head next to the drive recess.

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Old 07-18-20, 11:26 AM
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The Park Tool DSD-2 is probably the finest screwdriver I have used and I highly recommend it. It is supposed to "exceed JIS standards" I don't know if that is totally true but it certainly is excellent at its job.
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Old 09-14-20, 11:19 PM
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Originally Posted by dsbrantjr View Post
Not so much on derailleur screws, but on electronics items and many others, JIS screws can be recognized by a dot or dimple on the head next to the drive recess.

I made a short video demonstration, comparing three different brand Phillips screwdrivers on a Shimano RD limit screw, including one with a tip ground down a bit - which seems to help a little (at the end I talked a bit about Pozidriv as well, but that's not relevant for this topic):

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