HRS ZeroDrag Seal Installation Instructions (engine shown is a GSR40; same process used for all installations) Clean crankshaft and seal of debris prior to sliding ZeroDrag Seal on crankshaft. Press ZeroDrag seal with fingers or socket until it snaps into existing seal. Complete installation of front seal assembled on engine. Same process for rear seal installation; flywheel must be removed. Use socket if too difficult with fingers. Complete installation of rear seal assembled on engine. Congratulations!!!! You have installed the ZeroDrag Seals and now have a freer reving engine with rpm gain.