Alshine Posted October 10, 2005 Report Share Posted October 10, 2005 Hi, I have had a 2005 Rev 3 250cc for about 4 months now and have been plagued with pinking problems for a long time. Before I start playing with the carb can someone tell me the standard setting for the mixture screw(mine is just over one turn out) and what size the standard jets are for this bike? It also seems the engine is hunting for fuel If they are ok would adding octane booster to the petrol help cure it. Thanks in advance for any info Regards AS Quote Link to comment Share on other sites More sharing options...
batrial Posted October 10, 2005 Report Share Posted October 10, 2005 On my 2003 250 the principal jet is 150 and the idle is 30. The engine runs well with the idle when the screw is unscrewed of 1,5 turns. Quote Link to comment Share on other sites More sharing options...
landrover Posted October 10, 2005 Report Share Posted October 10, 2005 my 05 250 rev3 mixture screw is just over one turn out,i use shell optimax mixed 70ml oil to 5lts of petrol and it runs fine this was set on delivery Quote Link to comment Share on other sites More sharing options...
Alshine Posted October 11, 2005 Author Report Share Posted October 11, 2005 (edited) Cheers Guy's Thanks for the info, just proves once again what a friendly crowd Trials riders are. Best Regards AS Edited October 11, 2005 by Alshine Quote Link to comment Share on other sites More sharing options...
Alshine Posted October 11, 2005 Author Report Share Posted October 11, 2005 Another thing I should mention Re: my pinking problem is that I had another carb slide in the box of bits that came with my Rev 3. I now have slides with a 2.0 and a 3.0 cutaway.Anyone know which is the standard one.I could just try them to see the difference but the carb is such a B*****d to keep taking off. Any info once again greatly received. Many Thanks AS Quote Link to comment Share on other sites More sharing options...
landrover Posted October 13, 2005 Report Share Posted October 13, 2005 mine as the 2.0 fitted as standard and runs fine Quote Link to comment Share on other sites More sharing options...
Alshine Posted October 13, 2005 Author Report Share Posted October 13, 2005 Cheers Many Thanks AS Quote Link to comment Share on other sites More sharing options...
neonsurge Posted October 13, 2005 Report Share Posted October 13, 2005 I could just try them to see the difference but the carb is such a B*****d to keep taking off. <{POST_SNAPBACK}> Not sure how you're doing it but the Beta's carb is the easiest and quickest to remove and refit of any bike I've owned. To remove, loosen the two jubilee clips, pop the carb out of the boots, disconnect the fuel line and unscrew the top to remove the slide/needle (turn the carb, not the top) - it's off in less than a minute. Reinstalling is slightly trickier although it gets easier when you've done it a few times and a light coat of WD40 on the inside of the rubbers helps a lot. Reinstall the slide/needle, reconnect the fuel line then (this is the trickiest bit) get the airbox rubber on. Once done, push the carb back and inwards and it'll pop back onto the manifold boot. Tighten clips and the job's done! Once you've done it a few times it's possible to get the carb off, clean out, even rejet or adjust the needle height if so desired and get it back on in 5 minutes - I've done it myself between laps at a trial. Quote Link to comment Share on other sites More sharing options...
worldtrialchamp Posted November 4, 2005 Report Share Posted November 4, 2005 Alshine, did you fix the pinking problem yet? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.