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hello, i just purchased a 2003 mxz800 Blair morgan, i had out for 5 mins, i stopped then pressed the reverse button, machine didnt reverse, and it started driving very boggy,no power. the buddy i bought it off said the tether switch may be too loose.
any suggestion on how to fix this problem? thanks
 

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Tether switch on these is the D.E.S.S. key, they were very problematic because the little tin piece inside the cap would expand and not make good contact with the ring.

For these to go into reverse, everything must be in perfect order. If the idle is to high or low, it will just sputter and die, for example.
 

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You'll have to get it reprogrammed. The ECM and DESS are programmed for each other.
 
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