Harley Davidson FLSTN Softail Deluxe 2015 Service Manual

Ultimate Motorcycling's own review doesn't hedge on this bike's genuine class-defining status: "there are few motorcycles that define the term 'cruiser' in a more authoritative way than the 2015 Harley-Davidson Softail Deluxe. With its low bucket seat, wide bars, deep fenders, wire wheels, and whitewall tires, the Softail Deluxe is what stylish cruising is all about. Heavy on nostalgia, the Harley-Davidson Softail Deluxe has all the traditional visuals you expect from a classic cruiser, including a big-inch air-cooled motor, forward floorboards and just the right amount of chrome balancing a rich paint job." That same review found the ergonomics genuinely well-judged for the format: "sitting on the bike is a pleasure. Your feet find the floorboards naturally and the bars come back to meet you at a pleasant point."

Power comes from the air-cooled Twin Cam 103B, a 1,690cc V-twin with a 3.87-inch bore and 4.374-inch stroke and a 9.6:1 compression ratio, fed by Electronic Sequential Port Fuel Injection, delivering a claimed 97.4 lb-ft (132 Nm) of torque at 3,000 rpm through a multi-plate wet clutch and 6-speed Cruise Drive transmission with belt final drive. Ultimate Motorcycling's own confirmed testing found the platform's real cornering limits genuinely modest, given the format: a 25.8-degree right lean angle and 26.7 degrees to the left, backed by 42 mpg fuel economy in EPA urban/highway testing.

Rocky Top Harley's own confirmed factory spec sheet lists a mild-steel tubular frame with a rectangular-section backbone, a 41.3mm telescopic front fork with chrome dust covers, and a hidden, horizontally-mounted rear shock — the genuine hardtail-look engineering Harley's own dealer copy explains directly: "you get the classic lines of a vintage 'hardtail' frame with the horizontal rear shocks hidden in the guts." That same confirmed spec sheet lists 292mm brake discs at both wheels with 4-piston front and 2-piston rear calipers, MT90B16 front and MU85B16 rear tires, a 32.1-degree rake with 5.8 inches of trail, and a 64.4-inch wheelbase.

Confirmed fluid capacities list a 5-gallon fuel tank and 3.5 quarts of oil (with filter), with shipped weight at 695 lbs rising to 726 lbs in running order. This exact 2015 model year represents the final Softail Deluxe before Harley's 2016 platform-wide refresh brought the High Output Twin Cam 103B (with a sixth-gear overdrive borrowed from Project RUSHMORE touring models), electronic cruise control, and revised throttle control to the whole Softail range.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2015 Softail Deluxe FLSTN running the way it was built to.