Kawasaki EN650 Vulcan S 2015 Onwards Service Manual

MoreBikes' own launch review captures the genuine departure this bike represents from Kawasaki's traditional Vulcan lineup: "it might be listed under the 'cruiser' section of the Kawasaki website and carry the Vulcan name — normally associated with large capacity V-Twins — but the Vulcan S is so much more." MCN's own retrospective confirms the deliberate positioning: launched using "a retuned version of the ER-6 engine in a bespoke frame," Kawasaki billed it as a genuine "sports-cruiser," designed to bring a more modern approach to the segment with contemporary colors and black finishes rather than the traditional glittery metalflake and heavy chrome of conventional cruisers.

Power comes from a 649cc liquid-cooled parallel-twin, delivering a claimed 61 hp at 7,500 rpm and roughly 46.5 lb-ft of torque at 6,600 rpm — MoreBikes' own review confirms this is genuinely the same fundamental engine as the Versys 650 and ER-6, specifically retuned for new riders through revised camshaft profiles and intake funnels aimed at boosting lower-rpm performance, with Kawasaki claiming a genuine 5% fuel efficiency improvement over that shared engine's prior tune. MotorcycleDaily's own second-ride impression confirms the character delivers on that promise: "this bike has an excellent engine... the Vulcan S has a broad spread of power from the Ninja 650-derived engine. Decent low-end, followed by a progressive surge of power as the tach sweeps right. This doesn't feel anything like your typical, slow-revving cruiser engine."

The genuine standout feature across this platform is Kawasaki's Ergo-Fit system — Cycle World's own coverage of the launch specifically highlights this "fresh approach to motorcycle fit," letting riders adjust footpeg position (a 2-inch range via special Ergo-Fit shift rods), handlebar reach, and seat options to genuinely tailor the riding triangle to their own body size, a real departure from the one-size-fits-all ergonomics of most cruisers. MoreBikes' own review confirms an all-new perimeter, high-tensile steel frame kept deliberately slim so shorter riders can get their feet down and weave through traffic confidently, paired with an under-engine muffler and dual-wall exhaust design maintaining that slim profile. Braking uses a single 300mm front disc with a dual-piston caliper and a 250mm rear disc with a single-piston caliper, with UK-market bikes fitted with Bosch 9.1M ABS. MCN's own coverage confirms the range expanded genuinely over subsequent years: a Vulcan S Café variant with trendier colors and a flyscreen, a Performance trim with a larger screen and Arrow exhaust, and dedicated Tourer versions of each adding a large windscreen, panniers, and a pillion backrest — with a genuine A2-licence-friendly restricted version launched in 2018 alongside these expanded trims. MCN's own testing confirms genuinely low running costs throughout: 63+ mpg fuel economy, with tires, brake pads, and the chain-and-sprocket set all reported to last well beyond typical intervals.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2015-onwards Vulcan S/EN650 running the way it was built to.