Routine engine maintenance on 2022 yz450f

mtbkris2
Posts
826
Joined
1/17/2024
Location
San Diego, CA US
Edited Date/Time 3/26/2024 8:08pm

I’m at about 50 hours now, just wondering what you guys are doing at this point in terms of engine maintenance. I’ve heard a lot of differing opinions on when to do my top end, so not sure if now is the time or I should wait another 25-50 hrs. Should I check my valves? Should I replace my timing chain?

I’d consider myself mid to upper novice after spending several years off the bike and I do wring the throttle more than most vets. Oil and filter are done every 1-2 rides. Air filter every ride. 

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3/27/2024 5:15am

I’d start thinking about it around 70 hours or so. If you’re not holding it on the chip all the time and keep your filters clean I don’t see you having a problem until then. I’d wait until then to check the valves unless it’s having trouble starting. 

1
3/27/2024 10:50am

I would do a leak down test and check the valve clearance.

1
27thmx
Posts
116
Joined
7/31/2020
Location
Naples, FL US
4/21/2024 4:20pm

I would say a piston at 75 hours should be safe for a 450. It just depends on how hard your ride and maintenance. 

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