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  1. #1

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    Question fuel cut off switch on MSX 140 2003 mod

    I am at the lake with a friends Polaris
    does it have a fuel cut off switch like my yammie ?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    No fuel valve, no choke.

    Electric fuel pump has a circuit breaker (Reset button) or fuse.

    On the MSX 140 everything is controlled by the EMM computer. The Polaris Ficht fuel injection system is different from the Yamaha system.

  3. #3

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    thanks

    K447

    I looked all over with no luck , That explains why I couldnt find one

    guess sputtering problem is in fuel lines or injectors
    pull the trigger sometimes it sputters sometime it goes

    can be running along great WFO then its like you loose power like trash in fuel
    guess I will check that next

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by ALL MY DOE View Post
    ....guess sputtering problem is in fuel lines or injectors
    pull the trigger sometimes it sputters sometime it goes

    can be running along great WFO then its like you loose power like trash in fuel
    guess I will check that next
    The diagnostics for the Ficht fuel injected engine are completely different from a carburetor engine.

    I doubt the fuel system is the problem. The important fuel system test is fuel pressure. Should be over 20PSI at the schrader valve tee.

    I would suspect the TPS (Throttle Position Sensor) is failing. The only reliably test is to install a new or known good TPS.

    Make sure the correct spark pugs are installed - NGK PZFR6H, no substitutes.

  5. #5

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    Will tell friend

    if he chooses to let me know I will post back results

    thanks again

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