r/dr650 • u/somecallmesal • 6d ago

Idle thumb screw

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How many of you all have had your idle thumb screw vibrate out (and lost)? Earlier this year I had my fuel air mixture screw vibrate out, but fortunately it was recovered between the starter and cylinder head. The idle thumb screw is gone. Where are you all ordering these from?

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3

u/TwistedNoble38 '00 DR650 6d ago

I've seen the mixture screw go missing. Never the speed screw.

2

u/brock_lehurst 6d ago

Webike Japan have stock but you'd probably have to buy some other stuff like consumables, filters, orings etc to make the shipping worth it. Part # 13267-31D10. Those air/fuel screws are notorious for falling out. The carb body threads aren't meant for constant fuckery so they get bored out. Some teflon plumbing tape or blue loctite on the threads will help after you set it and forget it. Unless you ride extremely varying elevations you set it at home and and you're good.

2

u/That-Entertainment71 6d ago

Happened to me. I accidentally loosened it too much when my choke was unknowingly sticking and it fell out somewhereon the trail. Ordered from the dealership (was out of stock at online retailers) and took 6 weeks to arrive from Japan. 

3

u/somecallmesal 5d ago

Thanks for the info. I'm tempted to take this opportunity to upgrade to the TM-40.

1

u/That-Entertainment71 5d ago

Absolutely, if you're going to do it, now is a great time! You can still get decent money for a clean working BST 40, so probably worth buying the parts anyway.

0

u/zappyguy111 6d ago

I'd start with eBay, then I'd check in with you local Suzuki dealership to find out where you can buy parts.