20 Most Recent 2008 Gas Gas EC 300 Questions & Answers

You may be right - check the fuse to see if it has blown due to a ground short.

hav a pro ajust or clean that jet--do you own a repair manual

I Have a 2006 ec300 and it had a very similar problem. I problem was with a small lever or clip inside the powervalve. (A bike shop repaired this for me) The bike was good as gold again

Be sure to change the piston and rings sometime around two years from now, but only if you want to. So long as the engine doesn't seize up due to lack of oil in the gas, the piston and rings should last for years. Please rate my answer.

Air bubbles float up so start bleeding at the banjo bolt at master cylinder first(not the bleed nipple)Best to use silicone brake fluid as it dosent eat paint, or else try flicking the leaver with cover of mastercylinder removed and look for raising air bubbles,flick,flick,then pull all the way in then flick,flick.Air bubbles should be visable soon.Keep trying this for 5 mins.If that dosn't work,& youve fit new seals you have probably fit them the the wrong way.
Regards Andrew Porrelli

you might find that there is oil getting past the rings and going out the exhaust meaningthe rings are gone, before looking at that take the exhaust off and clean out the exhaust could just be clog up

maybe wrong kind of sparkplugs...check which one you have in there, probably the "cold"ones...change them out for the higher temp ones.

Here is a tech article I wrote up on my old 2001 XC250. Since it is of the same general vintage you may want to look at the wiring diagram shown in the article. My guess is that the wiring color codes would be similar. http://www.gasgasrider.org/html/headlight___horn.html,

hi buddy its better if it has more compression have you serviced it and is it 4 or 2 stroke

You need to change the power pack to cool start and hot start the engine.

OK just using logic, no specialist knowledge but... If temperature fluctuates, then it sounds more like a thermostat/heat control problem. If it CAN get hot then doubtless there is gas available... It's probably something to do with the heat controller unit - can you get it checked? have you looked inside the unit to see if there is any obvious issues?

Kerry, Check for vacuum leaks, check the fuel line is not old and collapsing (they can look good on the outside and inner collapsed), if it ha a vented cap make sure it is not plugged.Were the floats set correctly or could be sticking. There still is a chance dirt has been re introduced into jets to. Good luck.

Is the machine a two stroke? Because if it is a blocked exhaust (full of carbon deposits) will cause exactly this symptom. The best way to clean it is to stand it on its end and fill it with oven cleaner and leave it for a day. In the old days it was just a case of heating the exhaust with a blow lamp and tapping the pipe gently to loosen the deposits

The best way to remove the old ignition lock is to remove the top yolk because most likely the lock will be FASTENED WITH SECURITY BOLTS. various videos on youtube might help

You would not fix a wiring diagram in most circumstances so what is your question really about. If you want wiring diagram you will likley only get one from the manufacturer in a service manual or possibly online.

IF YOUR KICKSTART HAS SEIZED AND IT WON'T TILT BACK IN THE PROBLEMS ON THE SHAFT (REMOVE THE DOMED ALAN CAP BOLT THEN REMOVE THE ACTUAL KICKSTART AND CLEAN UP THE SHAFT AND INSIDE DIA OF THE KICKSTART AND LUBE IT BEFORE REFITTING, MIND YOU DON'T LOSE THE SPRING AND BALL). IF ITS SEIZES WHEN YOU KICK THE KICKSTART THEN ITS THE KICKSTART GEAR OR BUSH IN THE SIDE COVER THATS THE PROBLEM. ITS EASY ENOUGH TO CHANGE IF YOU HAVE THE TOOLS FOR THE JOB. IF ITS A DIRT BIKE TRY TO PRESSURE WASH IT THEN SPRAY WITH WD-40 IT MIGHT HELP. GOOD LUCK IF YOU NEED HELP WITH STRIPPING IT DOWN JUST LET ME KNOW (ALSO LET ME KNOW IF ITS A LEFT OR RIGHT SIDE KICKSTART)

yes you can but you must change the rings coz if normal the liner is chrome or coated they are different !! P...

Check your clutch adjustment. If the cable is too sloppy it will make it difficult to get it into gear especially neutral. I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_5bac37c3cb991fdb

clean carb...fresh fuel...change oil...

Some common causes and potential solutions: Air/Vacuum Leak: If your Harley develops a vacuum leak in its air intake system, the air-fuel mixture becomes too rich. This can cause frequent stall outs, especially after the bike warms up. Vacuum leaks often occur due to dried-out or cracked air intake boots, faulty gaskets, or worn-out carburetor seals. When air escapes from the intake system, the fuel fills the empty space in the combustion chamber, altering the air/fuel ratio and negatively impacting combustion. Severe vacuum leaks can lead to excess fuel flowing into the exhaust system, causing backfiring and stalling while riding. Clogged Fuel Tank Filter/Fuel Injectors: A blocked fuel tank filter (due to coagulated fuel, moisture, dirt, or corrosion) impairs fuel flow, resulting in a lean air/fuel ratio. On fuel-injected Harleys, clogged fuel injectors produce similar symptoms. Regular maintenance, including cleaning and inspecting fuel filters, helps prevent these issues. Faulty Cam Chain Tensioner: A malfunctioning cam chain tensioner can affect engine timing and cause stalling. Regular checks and replacements are essential to avoid this problem. Faulty Cam Position Sensor: The cam position sensor plays a crucial role in ignition timing. If it malfunctions, it can lead to stalling and backfiring. Clogged Air Cleaner: A dirty air cleaner restricts airflow, affecting combustion efficiency. Regularly clean or replace the air filter to prevent this issue. Ignition System Failure: Faulty ignition components (such as spark plugs, ignition coils, or wires) can cause misfires, backfires, and stalling. Inspect and maintain these parts regularly. Compromised Battery Terminal Connection: Poor battery connections can disrupt electrical flow, affecting the ignition system. Ensure clean and secure battery terminals. Remember that diagnosing and addressing these issues may require professional assistance. Regular maintenance and timely repairs can keep your Fat Boy running smoothly on the road.