Pilot Jet screwdriver size

brian12 · September 9th, 2013, 07:18 PM

Does anybody know what size screwdriver fits? I used a 3/16 cabinet tip tonight like I did on my old carb and it damaged them while I was taking them off. I don't remember it damaging them when I used what I believe was the same screwdriver last time(bought another one from lowes after I lost the first one).

I have a 1/8 but its a little loose. Will a 5/32 work?

Alex · September 9th, 2013, 07:26 PM

I thought they were all JIS screws, so none of the normal US sizings are a perfect match.

brian12 · September 9th, 2013, 07:51 PM

Quote:

Originally Posted by Alex

I thought they were all JIS screws, so none of the normal US sizings are a perfect match.

I figured it might be metric. I've never seen a metric flat head though. Do you have any idea what size it takes?

Alex · September 9th, 2013, 07:55 PM

I don't, but I hope someone comes along shortly to help us both out.

greg737 · September 9th, 2013, 08:10 PM

Look no further than your local Home Depot (or equivalent).

Rather than thrashing around trying to find real no-shiite JIS drivers you can just pick up the two smallest sizes of drywall driver bits at Home Depot. Their profile is almost identical to that of the JIS drivers.

You'll never 'cam-out' another carb screw.

FvnnyL3tt3r1ng · September 10th, 2013, 02:36 PM

Quote:

Originally Posted by greg737

Look no further than your local Home Depot (or equivalent).

Rather than thrashing around trying to find real no-shiite JIS drivers you can just pick up the two smallest sizes of drywall driver bits at Home Depot. Their profile is almost identical to that of the JIS drivers.

You'll never 'cam-out' another carb screw.

Will have to look into that to get my stuck pilot jets out. Glad I live a 5 min. walk from the hardware store!

brian12 · September 11th, 2013, 10:57 AM

Apparently there is no such thing as a flat head jis screwdriver.

Quote:

JIS screw drivers are only cruciform (Phillips-like). The flat head drivers needed for removing jets and adjusting pilot mixture screw are Hitachi or Mukuni proprietery bits. There was a post recently about buying these sets, but the common practice is to get a cheap set of screw drivers and grind them.

http://xjbikes.com/Forums/viewtopic/p=331827.html

I checked out sears yesterday and the craftsman professional 1/8 and 3/16 both seemed to fit pretty well. The regular craftsman not so much. The 3/16 would probably need to be filed down some to fit into the carb.

Both Lowe's and Harbor freight had 5/32 in sealed packages so I couldn't try them. Sears had a 5/32 but it wasn't the professional line and it didn't fit that well. I think maybe the reason the last time I used the lowes 3/16 and it worked is because of the poor tolerances on these cheap screwdrivers.

Anyways, I ended up wrapping the 1/8 I had in a tissue and using it to tighten the new jets in. My bike is up and running now after having cleaned the carb out twice. Need to sync the carbs, change the oil and tighten the chain and then it should be road worthy.

Quote:

Originally Posted by FvnnyL3tt3r1ng

Will have to look into that to get my stuck pilot jets out. Glad I live a 5 min. walk from the hardware store!

I think he's referring to the phillips heads on the bowls. Those bits look like phillips which won't work on the jets.

September 9th, 2013, 07:18 PM	#1
brian12 ninjette.org member Name: Brian Location: Southeast Join Date: Oct 2010 Motorcycle(s): 250 Posts: 19	Pilot Jet screwdriver size Does anybody know what size screwdriver fits? I used a 3/16 cabinet tip tonight like I did on my old carb and it damaged them while I was taking them off. I don't remember it damaging them when I used what I believe was the same screwdriver last time(bought another one from lowes after I lost the first one). I have a 1/8 but its a little loose. Will a 5/32 work?

September 9th, 2013, 07:26 PM	#2
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	I thought they were all JIS screws, so none of the normal US sizings are a perfect match. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

September 9th, 2013, 07:55 PM	#4
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	I don't, but I hope someone comes along shortly to help us both out. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

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September 9th, 2013, 08:10 PM	#5
greg737 - Name: - Location: - Join Date: May 2009 Motorcycle(s): - Posts: A lot.	Look no further than your local Home Depot (or equivalent). Rather than thrashing around trying to find real no-shiite JIS drivers you can just pick up the two smallest sizes of drywall driver bits at Home Depot. Their profile is almost identical to that of the JIS drivers. You'll never 'cam-out' another carb screw.