ATV Repair and Maintenance 92 350l crank seals question October 31, 2015 I have a 1992 350 L trail boss. I believe the crank seals are blown out. My question is do I need to pull the motor from the chassis to replace the crank seals and or crank bearings? Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related