Crank End Access Cover Stuck


2 replies to this topic
  • JLB943

Posted November 24, 2015 - 05:26 AM

#1

Have a 2011 YZ450, in process of redoing top end. I tried to get my crank end access cover off. After spraying with penetrating oil and heating up it will not budge. The 14 mm allen is now rounded out on the cover after a few attempts to loosen. My next attempt will be a chisel and punch on the outer edge. Any tips or tricks for getting these out? I was thinking about possibly drilling and tapping a hole with left hand thread but worried about debris in the engine. The cover will be thrown away at this point so I just have to get it out. Anybody had a similar issue and what worked?


Edited by JLB943, November 24, 2015 - 05:28 AM.


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

Posted November 27, 2015 - 03:40 PM

#2

I had this problem as well..i ended up taking a dremel and cutting a slot from one of the points of the allen out towards the edge of the plug..but not all the way. 

Also don't use a sharp edge screwdriver or punch and be sure to cut a good lip to hammer at an angle and not directly into the motor..i actually split the plug at my first go at it



  • JLB943

Posted November 29, 2015 - 05:54 PM

#3

Got it to come off. Used a dremel to make a groove the out toward the edge. Tapped it with a flat faced punch.







Related Content

Forums
Photo

Megabomb Fitment by 288yz450


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

Should I buy this bike? help....... by Numsa Hul


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies
Forums
Photo

James Stewart back on a YZ450F by YamaLink


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

BIGBORE FOR YZ450F 2006? by Taattie94


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

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017
 
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.