Vintage Dirt Bike Q & A

Anything and everything about Vintage Dirt Bikes! After you Register, email nathan@alp-sys.com and let me know so I can activate you.
It is currently Thu Mar 28, 2024 4:13 pm

All times are UTC - 7 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: MR 250 keihin carb parts
PostPosted: Tue Sep 27, 2016 6:43 am 
Offline

Joined: Thu Aug 22, 2013 6:11 pm
Posts: 4
Is there a best site to find keihin carb parts.? Air screw adjuster on the air intake side of the carb. Seized in there.


Top
 Profile  
 
PostPosted: Tue Sep 27, 2016 10:33 am 
Offline

Joined: Sun Nov 30, 2008 12:10 pm
Posts: 1010
Location: Connecticut, USA
Everything in the carb kit below should fit your carb (the pilot jet is 4mm shorter, but will still fit):

http://www.ebay.com/itm/73-74-HONDA-CR2 ... 0883003512

Many of the other jets etc. can be found here:

https://jetsrus.com/a_jets_by_carbureto ... ection.htm

Re stuck air screws, I've had fairly good luck using a small flat punch to repair screw slot damage, then heating the aluminum around the screw with a propane torch (small flame, 30 seconds or less per attempt). The aluminum expands faster than the brass, breaking the corrosion bond. PB Blaster can help too, especially when sprayed on while the metal's still warm.

Ray

_________________
'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


Top
 Profile  
 
PostPosted: Tue Sep 27, 2016 4:27 pm 
Offline

Joined: Thu Aug 22, 2013 6:11 pm
Posts: 4
Thanks for the comments on heating. I'm out of the garage for a few days so I'm letting it soak that long. Then il try the heat. I have one of those cheap pencil propane torches. Perfect for that kind of work. The air screw is the biggest issue everything else looks very good. Il look at the links!


Top
 Profile  
 
PostPosted: Tue Sep 27, 2016 5:15 pm 
Offline

Joined: Sun Nov 30, 2008 12:10 pm
Posts: 1010
Location: Connecticut, USA
If the eBay link doesn't open, go to eBay and enter 400883003512 in the search line, which should bring you to the carb-kit auction. You can also search for kh-0138, which will bring up the same carb kit from other sellers.

Ray

_________________
'74 CR125M (175cc), '75 MR175, '82 RM250Z, '08 YZ250F, '14 Zero FX electric, '14 Zero MX electric, '18 Alta MXR electric


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 7 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 36 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group