Recent content by Jim Cook

By the VIN, your bike is a 2000 EC250. By looking at the photo, I see that you don't have an airbox door and shortened left number plate to make room for it: so it is a 2000, not a 2001.

I have both a 2008 and a 2009 2-stroke EC parts book in my computer files. If you would like for me to send you one or both of the files in an email, let me know what to send you in a Private Message here with an email address. I will send the parts manual(s) in a pdf format file to that email...

The 45 pilot jet gave better acceleration during a WFO start, but badly spooged the exhaust during enduro and trail rides. The 42 pilot jet worked almost as well in a WFO drag race, but didn't create as much exhaust spooge in normal "real world" riding situations. Yeah. The N1E* series of jet...

Send me a private message with your email address, and I will email you a pdf file of a workshop manual that will work with your bike. (It is a 2005/6 workshop manual; the first year that GasGas published one.) The stock jetting was "motocross style" jetting, which promoted midrange to high...

Your reeds look a lot like the Boyesen replacement reeds for the V-Force 3 reeds on this page. https://boyesen.com/c58-ultimate-performance-reeds , but look even more like those in the right hand photo on the previous page here: https://boyesen.com/s49-mx-offroad-mini . I wish I could be more...

I'm not sure if the reed block on your 2008 is the same as those originally used on the EC250. Are you sure that it originally came with the Boyesen Rad Valve? My 2006 DE300 (EC300) came with the Moto Tass V-Force 3 set-up. The original Boyesen reeds that GasGas used in the earlier models...

Thanks for that information. Back in the early '80s, I used Golden Spectro at 50/1. My Yamaha dealer raced enduros, and he recommended the GS at 50/1. I wasn't getting very good wear out of my piston/rings/cylinder bore, so I mixed it at 40/1. When I used the GS at 40/1, it burned so dirty...

I tried, but still haven't found the workshop manual for your bike. I am not familiar with the 450/515 GasGas 4-strokes for 2008-9010. All my experiences were with the 2002-2005 FSE. I think the 250cc GasGas 4-stroke models produced in '08-'09 had Yamaha engines in the GG chassis. I have a...

I wish that I could help you, but I do not have the shop manual for the FSE after 2005 year model. I will look and see if I can locate where you can download one. I believe GasGasman might have a link to download manuals. I will check. If I find one, I will send you a private message to...

Thank you for sharing your ride with us. I enjoyed it. Good Riding to You! Jim .

Well Done!

F5 gives good advice here. Plug reading as a diagnostic is only really useful on two strokes for WFO use, tuning 4-strokes, and seeing if you have melted aluminum stuck to it after the bike seizes. (melted piston) If you want to see if the bike is cooling properly, run it up and down your...

You are welcome. Thank you for the nice words. Regarding your cooling. (side note: I never measure the coolant. If I have an expansion tank in operation on the bike, I lean the bike to the right and fill the left radiator to the top of the neck. If it doesn't have an expansion tank, I fill...

Hi Jay. There is only one powervalve "flapper" on the 200/250/300 EC/MC Gassers. They all use the same assembly and parts. You can see the flapper if you remove the exhaust pipe and look into the cylinder through the exhaust manifold. The powervalve "flapper" is the movable piece in the top...

Through 2004. In 2005 they changed the cases.