Today's Message Index:
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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)
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| Subject: | 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
-----
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Message 2
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| Subject: | Re: 912 rough running below 3000 rpm |
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
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