Derbi Senda Sm 02, Problems Again :(

[Tt 101]

Must be the winter weather killing of all the 50cc's

Anyway....

Last night after trying to keep up with the rs125, i started getting really bad performace from her went subway for a brew came out and she ran fine for about 20mins before the same problems.

Today shes been a complete arse, ran fine for 20mins then started again with the problems and now doesnt matter if you leave her for a few hours same problem, she doesnt respond to throttle that well takes a good few seconds before she gets going, need alot of revs to stop her cutting out, doesnt rev freely, feels really boggy when going and after changing gear.

So I took the spark plug out and was completely black, cleaned the plug of, same performace so i guess shes running rich for some reason? I think theres a choke switch on the bike but im not sure, doesnt seem to do anything when clicked.

Is there a manual for the sm 02? Can't find one anywere.

Done 11,500 miles, had a new spark plug, piston kit about 3k of them ago, guessing its time or could it be something else?

Cheers Kris
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Past Bikes : BTS GY150 (Field) And A Gilera Dna 50, Derbi Senda SM, Kawasaki Kmx 125 "89, Suzuki SV650 2002 (33bhp)
Current: Street Triple 2009 Black

[Ichy]

Might be worth checking the air filter.

[Tt 101]