Question about Kymco 2005 Mongoose 250

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What are some likely scenarios for a 2005 Mongoose 250 not starting

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Bad pulsar unit
Bad CDI unit
Bad gearbox electrical unit
Bad coil
Bad HT lead or caps
Bad spark plug
Bad earth wires
Bad ignition key switch
Contaminated fuel
Dirty carburetor

Posted on May 25, 2015

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Posted on Jan 02, 2017

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1 Answer

How to hot wire a mongoose 90


join the wires on the back of the ignition switch. Power wire to one of the others until the ignition light comes on. Better to buy a new key though.



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What oil and how much for it?


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May just need a battery if not maybe the solenoid sometimes you can peck on the solenoid and it might start or a fuse

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Hi Matt only help I can give is look along top & bottom of chain for a tensioner it will be a round rubber wheel. If you cant find a tensioner it will more than likely you need to cut the chain down. If your not sure how to let me know & i'll let you know how. Also DO NOT USE IT while chain is loose as if you do & chain comes off you can crack engine case which then means a new engine

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