2019-2020 CRF 450 valve adjustments

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10/20/2019 10:32 PM

Question for the actual owners...how often do you check valves and do you have to adjust them?

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10/20/2019 10:55 PM

I'm a rev-happy back of the pack privateer that had one. Stock internals, piston changed at 25 hours and looked brand new still. Sold the bike with 45 hours and checked the valves at 20 and 40 hours with ZERO movement. Rock solid bike overall and wouldn't hesitate to grab another. I'm sure everyone would say stick to the service manual, but service life is often times subjective to the rider's characteristics and not necessarily the amount of hours you put on it.

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10/22/2019 10:42 AM

Shit, I’m at 101 hours and haven’t checked mine lol. The bike still starts in 1-2 kicks, even hot and in gear. I’m not rev limiter happy but I’m a decent rider.

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2017 CRF450r

10/22/2019 11:08 AM

hubbardmx50 wrote:

Shit, I’m at 101 hours and haven’t checked mine lol. The bike still starts in 1-2 kicks, even hot and in gear. I’m not rev limiter happy but I’m a decent rider.

I have a 2018 450RX...basically the same engine as the R. Adjusted 1 valve at 100 hours. The Honda valve train is pretty solid.

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10/22/2019 11:10 AM

hubbardmx50 wrote:

Shit, I’m at 101 hours and haven’t checked mine lol. The bike still starts in 1-2 kicks, even hot and in gear. I’m not rev limiter happy but I’m a decent rider.

" 1-2 Kicks" !?!? You should be pushing a button, bro. lol

But if you keep a clean airfilter, don't bounce off the rev-limiter constantly and it's running fine.... I wouldn't even check it until 100 hours

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10/22/2019 1:11 PM

hubbardmx50 wrote:

Shit, I’m at 101 hours and haven’t checked mine lol. The bike still starts in 1-2 kicks, even hot and in gear. I’m not rev limiter happy but I’m a decent rider.

BroFoSho wrote:

" 1-2 Kicks" !?!? You should be pushing a button, bro. lol

But if you keep a clean airfilter, don't bounce off the rev-limiter constantly and it's running fine.... I wouldn't even check it until 100 hours

LOL, probably should’ve included that mine is a 17 but same motor and valve train. I’m looking forward to E-Start on my next bike but for now I don’t mind kicking, especially when it’s so easy to start anyways. I really like what Honda did with the right side crank case for 2019 where the Kickstarter used to be.

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2017 CRF450r

10/22/2019 1:19 PM

Never. My experience with a number of modern 4 strokes is valves are no longer a "consumable/wear component" as in the early days like my 2005 HOnda 450. My last 5 bikes (2013 thru 2019 KTM 450 models) I got 200+ hours from every one of them and never opened the engine. Not to start a territorial urination contest, but my 450 KTM's get over 200 hours without touching the top end, bottom end or even the clutch. I'm amazed at the longevity. I buy a bike every other year at the 200 hour mark.

I will state I'm a intermediate vet who rides 3rd gear the entire track. I'm easy on equipment. My son is an mid pack intermediate rider and he got 156 hours on his 2017 KTM 450 before it needed a top end. Nothing else was done to his bike. His valves were spot on.

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10/22/2019 4:23 PM

O&GDriller wrote:

Never. My experience with a number of modern 4 strokes is valves are no longer a "consumable/wear component" as in the early days like my 2005 HOnda 450. My last 5 bikes (2013 thru 2019 KTM 450 models) I got 200+ hours from every one of them and never opened the engine. Not to start a territorial urination contest, but my 450 KTM's get over 200 hours without touching the top end, bottom end or even the clutch. I'm amazed at the longevity. I buy a bike every other year at the 200 hour mark.

I will state I'm a intermediate vet who rides 3rd gear the entire track. I'm easy on equipment. My son is an mid pack intermediate rider and he got 156 hours on his 2017 KTM 450 before it needed a top end. Nothing else was done to his bike. His valves were spot on.

Had a 05 CRF450R. Was nothing but a valve eating machine. Was so bad I was really cautious when purchasing my 2020. So glad I did. Just a fun bike to ride!

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