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Wes · July 4th, 2009, 01:05 PM

The screws on those covers are Japanese Industrial Standard screws, and not US-style #2 Phillips -- which is very similar but NOT THE SAME. You need to be extra careful, as well, as those screws are very soft metal and easy to strip.

When I work on those carbs, I don't have a JIS screwdriver, so I put the carbs in a vice on my bench and use a hand impact driver with a #2 Phillips bit to loosen them before turning them out.

If you guys are shimming the needles (#4 washers are a good choice, BTW) with the carbs on the bike, I would really strongly suggest using the right screwdrivers. It's not so bad now when then bikes are new, but wait 'till the screws have been in there for a few years.

I hate Keihin for doing this, BTW. What morons.

Here is a page discussing various types of cross-head screws: http://www.instructables.com/id/SAD3S3IFOVXPGXR/

Wes

July 4th, 2009, 01:05 PM	#430
Wes ninjette.org member Name: Wes Location: Kingston, ON Join Date: Jul 2009 Motorcycle(s): EX250-F14 Posts: 41	The screws on those covers are Japanese Industrial Standard screws, and not US-style #2 Phillips -- which is very similar but NOT THE SAME. You need to be extra careful, as well, as those screws are very soft metal and easy to strip. When I work on those carbs, I don't have a JIS screwdriver, so I put the carbs in a vice on my bench and use a hand impact driver with a #2 Phillips bit to loosen them before turning them out. If you guys are shimming the needles (#4 washers are a good choice, BTW) with the carbs on the bike, I would really strongly suggest using the right screwdrivers. It's not so bad now when then bikes are new, but wait 'till the screws have been in there for a few years. I hate Keihin for doing this, BTW. What morons. Here is a page discussing various types of cross-head screws: http://www.instructables.com/id/SAD3S3IFOVXPGXR/ Wes