Question about 2005 Derbi GPR 125 Racing

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I have trouble starting my scooter, the indicators and brake lights and all that work, but when i try to turn it on using electric start it just makes a humming noise. is this due to my drivebelt being on too tight or the starter moter broke?. please could you help. This doesent have a scooter option but i figured it shouldnt be much difference

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I can't find the a micro phish on but if i where to guess where to start it would be the start clutch or idler gear
Some bike use a sprag clutch it lets it engageone way and free spin the other works great but can get worn out.
Pull your starter out most bikes two bolts and a + wire that comes from your relay. after you have in your hot light hand take a battery and a set of jumper cables clip the groung (-) the body and the positive (+) the to the post. Now clip the ground to the battery and while holding the starter down touch the positive to the battery if you start is working right it should spin fast and want to jump off the table. if so check your starter clutch, or idler gear.

Posted on Feb 01, 2010


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