2014 450 3.7hrs Broken In?


10 replies to this topic
  • Stickerking

Posted October 18, 2015 - 10:47 PM

#1

Haven't had a new four stroke for ages, just checked the valves, all in the middle of spec.

In other peoples experience with the yz450 the first valve adjustment is always sometime after break in or have some bikes not needed adjustment at all in the first say 30 hours?

Just wondering how soon to check them again I suppose.

With this bike I may have bitten off more than I can chew as I am only c grade level rider but I am sure
Gonna have fun trying to tame the beast!

Rekluse,mapping and flywheel ASAP I say!!

My other bike is a 300xc with rekluse core so it's best of both worlds now!!
(No more trying to ride the XC on the track)

  • Krannie McKranface

Posted October 19, 2015 - 04:33 AM

#2

You don't have to worry about valve adjustments so much with the Yamaha.

 

Ring seating is more important, but it's too late for that (first 15 min).

 

As soon as the bike gets noticably harder to start, adjust them again. 



  • drtrcr400

Posted October 19, 2015 - 10:35 AM

#3

My 2014 has 170 hours on it now and the valves are still in spec.

  • Stickerking

Posted October 19, 2015 - 10:50 AM

#4

All good news for someone used to a 2 stroke.

  • GHILL28

Posted October 19, 2015 - 11:42 AM

#5

My 2014 has 170 hours on it now and the valves are still in spec.

 

What kind of maintenance schedule?  Oil/filter/interval?

 

Changed the piston or timing chain yet?



Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • drtrcr400

Posted October 19, 2015 - 11:44 AM

#6

Always ran Amsoil and change it every 6-7 hours. I did a piston and timing chain at about 110 hours but everything looked perfect. Mostly just wanted to keep it fresh.

  • Dklassen

Posted October 19, 2015 - 06:34 PM

#7

Always ran Amsoil and change it every 6-7 hours. I did a piston and timing chain at about 110 hours but everything looked perfect. Mostly just wanted to keep it fresh.

This is great news for me I have one in the garage with no hours on it. I'm waiting for next season so it's nice know how long the bike is going to last!

  • Monk

Posted October 19, 2015 - 07:40 PM

#8

I'm nearing 120hrs. Haven't touched a thing...

  • grayracer513

Posted October 20, 2015 - 06:28 AM

#9

On my '06, I changed the piston and one intake valve out at over 300 hours, honed the cylinder and done.  Piston should have come out a little earlier, but the bore was fine.  



  • Stickerking

Posted October 20, 2015 - 10:48 AM

#10

These engines are tough!

  • YamaLink

Posted October 21, 2015 - 05:26 AM

#11

Arguably the toughest engines I've had since entering the 450 world in 2002 with the opposite of "tough engine": the beloved CRF450R.







Related Content

Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

Is it worth it? (Cam and High compression piston) by macgi77


Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

First Hare scramble tips by dhend8


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.