jetting, factory manual mistake



1 reply to this topic
  • blaze

Posted January 01, 2001 - 06:44 PM

#1

Just bought a 2000 426 and while doing some rejetting noticed the factory manual incorrectly labels the choke circut jet as the pilot jet. Just thought I'd point it out so someone else won't be confused. Is this an isolated mistake or is the whole manual filled with mistakes? My first 4-stroke in 25 years of riding, and jetting this thing is hard enough as it is!

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

Posted January 01, 2001 - 08:59 PM

#2

Blaze: there is another mistake concerning the cams. In the section where it describes the steps to remove the cams, it describes removing the cam sprocket bolts. The sprockets are pressed on to the the end of the camshafts, not bolted. I believe that the original design was to have them bolted on but changed to a pressed-on design at the last minute to save a few pennies. The pressed-on design makes degreeing the cam much harder. Bummer!





Related Content

Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride


Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies
Forums
Photo

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F


Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies
Forums
Photo

Megabomb Fitment by 288yz450


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
 
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.