Harley Davidson FLSTF FLSTFI Softail Fat Boy 2002 Service Manual

Harley's own 2002 marketing copy explains the genuine engineering challenge this generation solved: "a smooth running twin-cam 88B engine set in a classic frame... twin counterbalancers, that's where unwanted engine vibrations go to die." Because Softail frames hard-mount the engine directly to the frame tubes rather than isolating it with rubber, the standard Twin Cam 88 used on Dyna and Touring models would have transmitted harsh vibration straight to the rider — so Harley developed the dedicated 88B variant specifically for this platform, marking the biggest powertrain upgrade to the Fat Boy since its 1990 debut on the Evolution engine.

Power comes from the Twin Cam 88B, a 1,449cc air-cooled 45-degree V-twin with pushrod-operated overhead valves and hydraulic self-adjusting lifters, delivering a claimed 63-67 hp at 5,200 rpm and roughly 78-86 lb-ft of torque at 3,200-3,500 rpm depending on carbureted (FLSTF) versus fuel-injected (FLSTFI) configuration. Wikipedia's own model history notes 2002 specifically brought bullet-style turn indicators, plus a factory alarm and immobilizer — genuine security and styling additions layered onto the Twin Cam-era platform that had launched two years earlier.

The chassis carries a mild steel rectangular-section backbone frame with twin downtubes, a Hydra Glide-style front fork, and the Fat Boy's signature solid disc wheels — 16 inches front and rear — wrapped in 130/90-16 tires at both ends. Four-piston calipers grip patented, uniform-expansion rotors front and rear (11.5 in. x .20 in. front, 11.5 in. x .23 in. rear), delivering 5.10 inches of front suspension travel and 4.34 inches at the rear. Styling stays true to the model's established formula: fat FL front forks, a black powdercoated engine with chrome covers, full-length floorboards, an FL rear fender, a 7-inch chrome headlamp with fork nacelle, and a hand-laced leather tank panel with textured leather seat insert. Dimensions run 94.3 in. long with a 64.5-inch wheelbase, shipping at 705.5 lbs dry with an 18.9-litre fuel tank. 2002 pricing started at $15,795.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 2002 FLSTF/FLSTFI Fat Boy running the way it was built to.