A forum for owners of Yamaha TTR250 trail and enduro bikes!

It's quite a lot of work. Why do you think they need replacing?

The front slipper is trapped between the head and barrel so the head needs to come off - see here

To remove the rear slipper involves the same work as replacing the timing chain - see here 

Sorry to bear bad tidings 

Brian

I parted with my first ttr with 70000kms on it. still all original inside the engine my current one is around the 20,000km mark with no need to open the motor at 6k.

I'd be surprised if it needs new guides 

Markvan wrote:

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ttboof , interesting , as im hoping to keep my ttr for many years and hope i gain that many KMS with little hassels. What % was road roading, how many times have you done valve shims , how many chains sprockets. How often oil change, any stator change , and rear shocks. I relize it has to do with the way you rode and conditions. My local bike shop said $250 au for a shim job. Does your ttr use any oil with 70,000 kms on it. Thnx. 

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 my current ttr has only got 30000ks on it doesnt use oil havent had to shim yet recently checked still ok my last  one i had to  shim at 45000 

I ride 90% dirt use castrol active 4 Oil change it depending on the riding as it's cheap might be after 8 hours sometimes 20 hours the ttr tends to let u know when it's ready the gear changes get a bit hard to get right . Air filter regularly but not too often my training with bosch taught me clean filters don't filter as well as a partially used one (clean ones are best for power ).

I don't find it's using any oil .only other wear and tear would be lower shock bearing wheel bearings  the occasional chain and sprockets and about 4rear tires and one front per year .

would recommend new fork oil in all ttrs the stuff they use straight ups a bit suss , id recommend 10w fork oil it makes the forks work well for average to quick trail riding

I ride with a grade and  world class riders but some one has to be last  .

All comes down to basic care and enjoying the ttr . I sort of work on 70.000ks before considering any sort of rebuild .

as for the valves checking them is a fairly simple job . changing them isn't very hard but if you arnt into DIY , id recommend checking them your self if they need adjusting then spend the money

this forum is fantastic full of info and I am  enjoying seeing ttrs in other parts of the world , but having all the feed back in one place sometimes problems such as stators can seem a bit more common than they are (no offence intended )

I will be up that your way soon for  work will keep an eye out for the 2up ttr