---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Wed 07/15/15: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:22 AM - Re: Re: 912 rough running below 3000 rpm (Flynn Elliott) 2. 04:53 PM - Re: 912 rough running below 3000 rpm (Roger Lee) ________________________________ Message 1 _____________________________________ Time: 10:22:01 AM PST US From: "Flynn Elliott" Subject: RE: RotaxEngines-List: Re: 912 rough running below 3000 rpm Hi Roger,and all who offered advice, The rough running is now in the history books. After cleaning the carbs yet again, blowing air around and through every nook and cranny all over a white towel with no crud to be seen whatsoever, I reassembeled the carbs with new jet 'o' rings etc. Put the carbs back on and balanced with gauges then a borrowed Carbmate (which is fantastic to use) Fired up the motor and to my great surprise my 912 was back to her old self, smooth as silk. I sooo wish we found some crapp in the carbs if only to tell me the problem !! Many many thanks for the help. Flynn -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee Sent: 03 June 2015 04:01 PM Subject: RotaxEngines-List: Re: 912 rough running below 3000 rpm Hi Flynn, The carb must be off the engine and held upside down. Take a MM ruler and stand it upright (straight up) on the outside lip of the carb. Now slide it over towards the float armature so you can see the ruler marks next to the float armature. The top of the float armature should be 10.5mm. If it is not just bend the tab where the float needle is suspended to obtain the proper 10.5mm height. This is what controls the fuel level in the bowl as the floats push up against it. If it is off adjustment it can cause some flooding and rough running. -------- Roger Lee Tucson, Az. Rotax Instructor & Rotax IRC Light Sport Repairman Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=442934#442934 ----- No virus found in this message. Checked by AVG - www.avg.com ________________________________ Message 2 _____________________________________ Time: 04:53:48 PM PST US Subject: RotaxEngines-List: Re: 912 rough running below 3000 rpm From: "Roger Lee" Hi Flynn, Glad it worked out. Sometimes when you clean the carbs the tiniest spec goes flying out and the eye never sees it. It may have been a passage that only had a partial obstruction to cause the roughness. It's happened to me. I have learned not to piecemeal everything and just bugle down and just the job top to bottom and 100% and that eliminates that as a potential problem. Over all it will take less time in the long run and be a lot less frustrating. -------- Roger Lee Tucson, Az. Rotax Instructor & Rotax IRC Light Sport Repairman Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=444807#444807 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.