Originally Posted by
mbx5rcr34
noticed that carb got a leak (3r),i went n checked through it n i believe the seal (o-ring) on the carb n crankcase is worn,i checked amainhbbs n theres nothing parts available,pls. can someone tell me where to buy this o-ring,thks for your help .................my 3r is going to 6 gals. n m very happy with it
Both upper and lower carb O rings are on A-Main
http://www.amainhobbies.com/product_...ducts_id/10603
http://www.amainhobbies.com/product_...ducts_id/10604
The carb on the 3RSpec is the same as the 5 and 7 Ports.
If you replace the upper O ring (black one) it might pay to do the lower crankcase (brown one) as well. These lower O rings can get a little bit chewed up with any slight sideways movement of the carb, and can end up dropping little shreds of rubber into your crankcase
For a couple of dollars itīs good insurance to change both
