knocking or ticking in neutral

4 replies to this topic
  • sean3239

Posted March 19, 2008 - 05:28 PM


was working on my bike (06 YZ450) and spun the rear wheel by hand while its up on the stand in neutral. I hear a knocking or ticking sound while doing this. I notice that it coincides with exactly one revolution of the drive sprocket and it sounds like its coming from that area. I checked to see if it was the chain or anything else exterior but could not find anything. The bike runs fine and I don't hear any abnormal noises while its running.....I changed the oil a week ago and everything was fine. I did the same thing on my son's yz125 just to make sure and it does not do it. Any ideas what this is?

  • grayracer513

Posted March 19, 2008 - 05:55 PM


One possibility is a damaged tooth one of the four gears in the trans that rotate in neutral when the rear wheel is turned. That would be either the 4th or 5th gear pair. The other three pairs are stationary if the mainshaft isn't turning. To check this, you might want to try putting the bike in 4th and then in 5th, pushing it with the engine off and the clutch in. The knock should get louder in one of those two gears if that is the problem.

Otherwise, I can't think of anything off the top of my head except perhaps the output shaft seal dust cover rubbing on one spot in the back of the sprocket.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • sean3239

Posted March 20, 2008 - 03:20 PM


wow, good call Grayracer. I pushed it in all gears with clutch and in 4th gear the sound is very pronounced. I don't really ride in 4th that much so it must of been a really bad shift or something? Strange, cause I had this same type of thing happen on my 03 but it was third gear that went.....dang, this is pretty expensive since I am unable to do the work myself. Well, thanks for the help.

  • grayracer513

Posted March 20, 2008 - 05:10 PM


wow, good call Grayracer.

It's not always so much fun to be right :excuseme: :confused: :excuseme:

  • FreshDonutsCAN

Posted March 20, 2008 - 09:53 PM


wow gray is super smart heh

Related Content


Michigan Motocross Tires by 288yz450

Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply

Need help by Goforaride

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  68 replies

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies

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

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

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.