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91 rm125 won't start?

This is a discussion on 91 rm125 won't start? within the RM forums, part of the Suzuki category; I was out riding it for like an hour, ran great,real fast but towards the end it tried to shut ...


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Old 12-24-2008   #1
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Default 91 rm125 won't start?

I was out riding it for like an hour, ran great,real fast but towards the end it tried to shut off.Then it took off for a second but shut off and now it won't start,it won't even roll start.Does anybody know what it could be and if so is it majorit made a loud backfire when itried to roll it off and someone said it could be something like the flywheel key
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Old 12-27-2008   #2
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My guess would be that you might have either really old gas, or an improper fuel/oil mix, leaning on the rich side I would say. Buy yourself a brand new spark plug, and if your fuel is mixed right, then it should come back to life. Oh yeah, is your air filter OK? Maybe it's clogged up.
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Old 12-28-2008   #3
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for 1 the plug might be knocked out or the bottom end come out meaning your going to have to buy a new rod and it will cost about 200 to 300$
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Old 05-22-2009   #4
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Clean the idle jet inside of the carburetor .Put it back on with a new fuel filter.If it`s got spark I think it will now run. ------
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Old 08-25-2009   #5
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Make sure that the sheer key, that holds the fly wheel in place has'nt sheered.....also check the timing....you will see 3 lines...use the middle one..
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