Question about Yamaha XJ 900 S Diversion Motorcycles
To start ensure that you have checked and replaced the air filter element. To replace the element you need to remove the fuel tank, then remove filter cover, held by three screws, and finally replace the filter, as in pictures below:
If replacing air filter does not fix the problem, then you have to work on carburetor settings, first adjusting the throttle cable, then working on the carburettor synchronization.
The first part of the settings, adjusting the carburetor cable, is not a difficult operation, while synchronizing the carburettors requires experience and a good hear for the engine. I suggest to have this last operation done by a mechanic if necessary.
Here the whole procedure:
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
SOURCE: Will only run in full choke mode
Try a fuel additive to clean the system, also if the airfilter is dirty or damp, this can cause problems.
You may even have a rust problem in the barrels.
Or even the engine oil may have thickened causing a resistance in the crank bearings, so flush the engines oil ways if other solutions don't work.
Posted on Jun 18, 2009
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