Oil leak somewhere behind the front sprocket

3 replies to this topic
  • ktownyz

Posted May 18, 2013 - 08:59 PM


I was out for a nice warm up ride when i noticed a nice slick on my swing arm, i stopped checked my level, it was low and limped back &%$#@!

  • sherco67

Posted May 19, 2013 - 03:53 AM


Pressure washers are notorious for blowing out sprocket seals, buy the kit for about 20 bucks, search e-bay here is one that will ship to you, 150955984886

Edited by sherco67, May 19, 2013 - 03:53 AM.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted May 19, 2013 - 06:38 AM


The output shaft seal is covered by a mud shield, besides being tucked behind the sprocket. It's impossible to spray it directly with a pressure washer, so it would be notoriety that is undeserved, You don't need a kit from someplace, only the seal, possibly the collar under the seal, and the O-ring under the collar.


Posted May 19, 2013 - 04:22 PM


Probably running your chain too tight.

Related Content


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
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 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

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

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

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.