Re: 1978 mer 140 inline 6
You'll need an impact wrench and 15/16" socket to break loose the flywheel nut, or a strap to lock the flywheel and a big breaker bar.<br /><br />Best way to pull off the flywheel is with a puller meant for a Merc motor. Get one at
www.oldmercs.com , eBay, or dealer.<br /><br />In a pinch remove two opposite bolts on the flywheel hub and use an automotive-type harmonic balancer puller. Use Grade 8 or better 5/16" NF puller bolts. Use red Loctite on the hub bolts when you reinstall them.<br /><br />DO NOT pry on the outer ring of the flywheel or you'll damage the flex plate!<br /><br />Once the flywheel is off it's just a matter of disconnecting & removing the stator & trigger assy and replacing. If I recall you'll want to use a drop of blue or red Loctite on the stator retaining screws to keep them from vibrating loose.<br /><br />Torque the flywheel to factory specs; you really should pick up a service manual to help guide you thru the process. Seloc makes an excellent book for the layman and it'll step you right thru the entire job.<br /><br />You'll also want to do the "link-n-synch" when you're done, as the trigger R&R will affect timing/carb linkages. And you'll have to realign the timing pointer as it's in the way of removing the flywheel. Mark it carefully and you should be able to get it very close to its original position; this'll help you with proper alignment.<br /><br />HTH.........ed
