[mitchbase]

My 250 excf is coming up to 100 hours, is it much of a job to fit new rings and how long should it take a first timer? quite good on the tools. Or how much would a shop charge?

 

[redbikejohn]

having read kevin's advice on other threads ref exc-f's i think his advice is to replace the piston as well. i just rebuilt my bike and did a guide on my website. it's not hard.

 

[fiesta14]

Hi mate

I replaced my piston and rings together at around the 90 hr mark. Easy job and I'm not a overly experienced bike mechanic. Just follow the easy step by step guide in the sxf engine manual (which can be found and downloaded from the members section), it was a while ago but I think it took around 3hrs. You'll have no problems doing it yourself, it will save you a load of money and give you a feeling of great satisfaction when you fire it up for the first time.

Cheers

 

[mitchbase]

Yeah i read ya report very informative. Do i need any special tools for the job? Any make of piston do the job?