Dedicated Subsystem WorkbenchPlatform Gen: 1990–2026

2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS) Throttle Body Synchronization & Fuel Delivery

Multi-cylinder vacuum sync specs, idle speed, EFI high-pressure fuel rail PSI, and injector resistance multimeter bench for 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS).

Technical PassportOEM VERIFIED

Engine

1868cc

Cooling

Air / Oil-Cooled with Dual Internal Counterbalancers

Final Drive

Belt Drive

Engine Oil

4.70 L (5.00 US qt)

Spark Plug

H-D 6R10 / 6R12

Front Tire

160/60R18 70V

Gen 1990–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 1990 through 2026.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2022 Harley-Davidson Fat Boy / Fat Boy 114 (FLSTF / FLFB / FLFBS).

Configure Service Bundles→

Select Model Year:(Active: 2022)
37 Production Years (1990–2026)

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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Official NHTSA Safety Recalls & Technical Bulletins

3 Active Campaigns

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

The U.S. National Highway Traffic Safety Administration reports 3 safety recall campaigns associated with this platform. Independent repair shops and riders should confirm that authorized dealership warranty remedies have been applied.

NHTSA #25V375000SUSPENSION:REAR:SHOCK ABSORBER

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Defect Description

Harley Safety Recall 0188: 2018–2024 Softail rear shock pre-load adjuster mounting tab can fracture under vibration, potentially allowing adjuster to contact rear tire.

Safety Hazard / Consequence

Contact between adjuster body and rear tire can cause tire damage, sudden loss of tire pressure, and loss of vehicle control.

Factory Remedy & Repair Action

Dealers install a reinforced retention bracket kit free of charge.

NHTSA #23V591000SUSPENSION:REAR:SHOCK ABSORBER

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NHTSA #18V734000POWER TRAIN:CLUTCH ASSEMBLY

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OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #HD-0181Safety Recall Bulletin 0181 & 0182 / NHTSA 23V-591: Softail Rear Shock Absorber Pre-Load Fastener Rear Tire Contact

Source: RCLRPT-23V591-6615.PDF

Mandated Torques:Torque: 12–15 N·m (106–133 in-lb) (Pre-load Adjuster Bracket Mounting Screw)Torque: 95–108 N·m (70–80 lb-ft) (Upper & Lower Shock Eye Mount Bolts)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Cone Nut)

Consumable Specs:Loctite 243 Medium Strength Blue ThreadlockerIsopropyl Alcohol Surface Cleaner

Genuine Part Numbers:102008499150010454000142

Recalls 0181 & 0188 • NHTSA 23V-591 & 25V-375

Harley-Davidson Softail Mono-Shock Pre-Load Adjuster & Tire Clearance Architecture

Fast adjuster bracket reinforcement, tire clearance inspection (≥ 10 mm), and 95–108 N·m shock mounting torques.

Shock Mounting Bolts95–108 N·m (70–80 lb-ft)

Adjuster Bracket Screw12–15 N·m (106–133 in-lb)

Chemical ThreadlockerLoctite 243 (Medium Blue)

Dynamic Tire Clearance≥ 10.0 mm (0.39 in)

Bulletin #HD-TSB-21-04Technical Service Bulletin TSB-21-04: Fat Boy Solid Lakester Wheel Hub, 240mm Rear Tire & Pulley Torques

Source: H-D_TSB_21-04_Lakester_Hub.pdf

Mandated Torques:Torque: 75–88 N·m (55–65 lb-ft) + 45°–50° Turn (Rear Driven Pulley Bolts - Loctite 262 Red)Torque: 41–47 N·m (30–35 lb-ft) (Front & Rear Brake Rotor Torx Screws - Loctite 243 Blue)Torque: 136–149 N·m (100–110 lb-ft) (Rear Axle Cone Washer & Nut)Torque: 102 N·m (75 lb-ft) (Front Axle)Torque: 24–27 N·m (18–20 lb-ft) (Front Axle Pinch Bolts)

Consumable Specs:Loctite 262 High-Strength Red Threadlocker (Pulley Bolts)Loctite 243 Medium-Strength Blue Threadlocker (Rotor Screws)Anti-Seize Lubricant (Axle Shafts)

Genuine Part Numbers:410003913700021441500147

Fat Boy Icon • Lakester Solid Disc Driveline