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1nd1anajones

Service Intervals

8 posts in this topic

Sorry about asking this question because you guys probably hear it all the time but its kind of rider specific. I just picked up a brand new 11 yz450f and Im wondering what the service intervals should be and what Ive gotten from this site so far is that I shouldnt really go with what the service manual says.

I usually putt along in the trails and do some hill climbing but definitely no MXing or large jumps. Keep in mind Im not the most mechanically inclined and the most I will do is check valves, I dont have the tools or the know how to start ripping this bike apart. I want this bike to last and I want avoid "grenading the engine". If you guys have anything to add please let me know.

Would you guys say this is a decent plan?

-clean air filter every ride or two, depending on condition of filter

-change oil and filter every 8 hrs or every couple rides

-check valves every 20hrs

-get a shop to replace timing chain, valves, and piston at 100-150hrs?

-bottom end replace things as needed

If you dont agree with me please dont rip me apart, Im new to this stuff haha

Thanks

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Sounds like you have it douwn pat. Depending on what kind of oil you use about changing it in around 8 hrs. I would say if you use Yamalube I would change it after every ride of about 2 hrs of ride time.

Amsoil 10w-40 MCF like I use then every 8 hrs. I however change mine after every race but in your case where you're not MX'ing then you would be ok with 8 hrs.

BTW I have a YZ 2011 450F and before that I had a YZ 2010 450F. I went 15 hrs before I checked my valves and they were AOK. Then I went to 30hrs and still they were AOK. I checked them again at 48hrs and still they were in spec. Last time I checked them before I sold it was at 60hrs(when I sold it) and they were still in spec.

I hope the 2011 is this good about holding the clearence of the valves. I will just continue to change my oil and clean my filter regularly.

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Sounds like you have it douwn pat. Depending on what kind of oil you use about changing it in around 8 hrs. I would say if you use Yamalube I would change it after every ride of about 2 hrs of ride time.

Amsoil 10w-40 MCF like I use then every 8 hrs. I however change mine after every race but in your case where you're not MX'ing then you would be ok with 8 hrs.

BTW I have a YZ 2011 450F and before that I had a YZ 2010 450F. I went 15 hrs before I checked my valves and they were AOK. Then I went to 30hrs and still they were AOK. I checked them again at 48hrs and still they were in spec. Last time I checked them before I sold it was at 60hrs(when I sold it) and they were still in spec.

I hope the 2011 is this good about holding the clearence of the valves. I will just continue to change my oil and clean my filter regularly.

Ya if i can go at least 60hrs before having to anything I will be happy, I would like to not have to do anything for at least a season, or until the bikes paid off haha. I was thinking about going with yamalube, figuring it would be the best, why would the life of yamalube oil be less than other oils?

I told my dad and uncle that these high performance 450's only get up to 200hrs on an engine before you have to do a rebuild and they started laughing at me, saying that you should get 2000hrs. I swear all these old timers are living in the old days when xr's were the only four strokes around and they lasted forever.

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09yz450 with 400 hrs and all original. So the old timers are somewhat right. Yamahas last much longer than the other brands.

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Just be sure to use a High grade oil like Amsoil MCF 10w-40 or something similiar and change the oil and filter regularly along with cleaning the air filter after each good ride and you wont have any issues.

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09yz450 with 400 hrs and all original. So the old timers are somewhat right. Yamahas last much longer than the other brands.

I was originally going to buy a kawi but even my buddies who ride kxf450's told me to go yamaha because of reliability. So glad I did.

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