20 Most Recent 2009 Derbi GPR 125 Racing Questions & Answers

Ground (negative) cables are usually black

If the bike only run when choke is on you may have have a plug metering jet. Small jet located in the carb body near the main jet.Jet could have unscrewed from carb due to vibration.

try this
http://www.youtube.com/watch?v=8DGY8feEluw

will show you how to do it

John

If the engine is turning over, then the battery is probably ok. I would suggest put the choke on and crank it over. If it does not start, then hold the throttle wide open. If it gets flooded, then this will allow enough air to level out the fuel. When an engine is flooded, it is best to hold the throttle all the way. The bike should start. If not you might spray a small amount of starting fluid in the air filter then start the engine. Don't use too much starting fluid. Just a small shot.

hay especialist talleres aqui en alicante para racing pero possibly el mejor soloution es pregunta en una concesionario de piagio ,porque derby es una producto de piagio mismo mi gillera 125 .Pregunta a depende el mostrador ?? pero con una bueno mostrador tu encuentra una sitio de especialista para pieces por tu moto

I know you said you cleaned the carb, but maybe something got in the carb when trying to start the bike. Because it sure sounds like you have a clogged pilot jet.

Fixya is unable to source parts.

One of these. You buy by make and model, not by size. https://www.google.com/search?q=2008+derbi+terra+flywheel+extractor.

What state is the battery in? Fully charged? Did it work before the overhaul? Check your wires again from top to bottom

Use a airlift or comparable coolant system air removal/refill system.You attach the unit to the coolant system filler and it vacuums all air from the system,then you use the supplied hose to return the coolant into the vacuumed system.This fills the system with just coolant and no air.

cycle oil..30wt..or car