If it only does it off idle then it is unlikely to be something major such as the TPS or fuelling.

Often it can be as simple as the fact the idle speed is too low. It is quite common to report random cutting out when rolling on the throttle from idle due to this. The XT motor (and most singles) need an idle speed in the 1400-1500 range to avoid involuntary stalling.

The first thing I would do is check your idle speed and set it to 1450rpm. You will first need to access the inbuilt rev counter in the dash as follows:

• Turn off engine RUN switch, switch KEY to off position.
• Press both SELECT and RESET buttons and hold them down while switching the ignition ON with the key. Keep SELECT and RESET buttons held down for at least 8 more seconds. The display then changes to "DIAG". Release SELECT and RESET buttons at this point.
• Press the SELECT button once until “CO” displays in the screen. Press SELECT and RESET buttons simultaneously again. “CO1” should now be in the display.
• Once CO1 showing in the display, switch on the RUN switch and start the engine. Once started the rev counter should be displayed in the right side of the LCD screen.

Now you can adjust the idle/tick over with the throttle stop screw until you get a steadyish 1450 in the display.

See how it goes after that…

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