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Reply to "MTH ENGINE PROBLEM"

Could be a number of things.  I'd start by checking the speaker, maybe at a certain rev level of the sounds, it's vibrating enough to start shorting to the speaker frame.  I've had a number of MTH speakers that have the cone wires very close to the speaker frame, if they touch, you'd get all sorts of nasty noises.  The fact that you can slow down, thus changing the pitch of the prime mover sounds and make it go away, leads me to suspect the speaker.

Question.  Does it do the same thing if you turn the volume WAY down so you can barely hear it and then run it past 25 SMPH?  How about the rest of the operation, smooth running above 25 with the sounds off?

Last edited by gunrunnerjohn

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