When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
01 Fatboy, 18k mikes. Primary gasket started leaking the other day. It's original. I purchased a replacement. Each time I've changed the primary oil I've used approx 24-26oz of primary fluid. When opening the primary to change the gasket and it emptying completely, how much primary oil should I need? I want to make sure I order the right amount (in case I'll need any from a second quart)
Different bikes with different size primaries will dictate the amount.... check with the service manual for your year bike... OR....
Just put in the usual amount, an then, with the bike standing up, off the jiffy stand, fill it up to the bottom of the clutch pack..
NOTE- my 88ci softail service manual says 26oz... the difference between drain/refill and cover-off refill is usually 4 to 6ozdepending on the size of the primary...... you should be fine with buying 1 quart.. Of course, never hurts to have a spare on hand...
Last edited by hattitude; Feb 27, 2018 at 10:54 AM.
Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.