🏷️ Basic Information

Make:

Harley-Davidson

Model:

FLHTCU Electra Glide Ultra Classic

Year:

2015

Product Type:

Service Manual

Product Name:

Harley Davidson FLHTCU Electra Glide Ultra Classic 2015 SRM

👋 Introduction

Category:

Full-dress touring motorcycle

Target Audience:

Long-distance touring riders, riders prioritizing comfort and amenities

Key Competitors:

Indian Roadmaster, Honda Gold Wing, BMW K1600 GTL

Touring Capabilities:

Spacious storage (saddlebags, tour-pak), comfortable seating for rider and passenger, integrated audio system, cruise control, large fairing with wind protection

Powertrain:

V-twin engine with substantial torque, suitable for highway cruising and carrying load

Comfort And Ergonomics:

Designed for long hours in the saddle, typically featuring a relaxed riding position, adjustable rider backrest, and passenger backrest/armrests.

📋 Manual Details

Engine:

Yes

Transmission:

Yes

Electrical System:

Yes

Fuel System:

Yes

Brakes:

Yes

Suspension:

Yes

Chassis:

Yes

Bodywork:

Yes

Troubleshooting:

Yes

Estimated Pages:

Approx. 600-800 pages (typical for this model's comprehensive manual)

Type:

Service Repair Manual (SRM)

Language:

English

Format:

Digital (PDF - assumed for common aftermarket availability)

📖 Manual Coverage

Powertrain:

Engine, clutch, transmission, final drive

Chassis And Suspension:

Frame, front fork, rear shock absorbers, wheels, tires, steering system

Brakes:

Brake system components, hydraulic lines, ABS (if equipped)

Electrical:

Ignition, lighting, charging system, battery, starting system, instruments, audio system, communications, cruise control, security system

Fuel And Emissions:

Fuel injection system, fuel pump, fuel tank, exhaust system, emissions controls

Body And Fairings:

Fairings, saddlebags, tour-pak, seating, controls, accessories

Routine Maintenance:

Oil changes, filter replacement, lubrication, chain/belt adjustment, spark plug service, brake fluid flush

Disassembly And Assembly:

Complete teardown and reassembly of major components

Troubleshooting:

Diagnostic charts, fault code interpretation, common problem identification

Repair And Rebuild:

Engine overhaul, transmission repair, suspension component replacement, electrical component diagnosis and repair

Special Tools:

Identification and usage of specialized tools required for specific procedures

Depth:

Comprehensive (from basic adjustments to complete engine and electrical system overhauls)

📊 Manual Specifications

Format:

PDF (typically searchable and bookmarked)

Quality:

High-resolution images and diagrams

Binding:

N/A (for digital format)

Paper:

N/A (for digital format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, Twin Cam 103™ V-Twin

Displacement:

1690 cc (103 cubic inches)

Bore X Stroke:

3.875 in. x 4.38 in. (98.4 mm x 111.1 mm)

Compression Ratio:

9.6:1

Valve Train:

Pushrod-actuated, overhead valves with hydraulic, self-adjusting lifters; two valves per cylinder

Torque:

104.7 ft-lbs @ 3500 RPM (approximate, may vary slightly by region/emission standards)

Fuel Delivery:

Electronic Sequential Port Fuel Injection (ESPFI)

Fuel Type:

Premium unleaded gasoline, 91 octane or higher

🔧 Transmission

Transmission Type:

6-speed Cruise Drive®

Gear Ratios:

1st: 9.593, 2nd: 6.650, 3rd: 4.782, 4th: 3.751, 5th: 3.174, 6th: 2.790 (approximate, specific ratios may be detailed in manual)

Clutch:

Clutched, hydraulically actuated, 9-plate wet

Final Drive:

Belt, 32/46 ratio

📐 Dimensions

Length:

103.1 in. (2619 mm)

Width:

39.6 in. (1005 mm)

Height:

53.7 in. (1365 mm)

Wheelbase:

64.5 in. (1638 mm)

Ground Clearance:

5.1 in. (130 mm)

Dry Weight:

838 lbs (380 kg)

Weight In Running Order:

872 lbs (395 kg)

Gross Vehicle Weight Rating:

1360 lbs (617 kg)

Saddlebag Capacity:

Approx. 2.0 cu ft per bag

Tour Pak Capacity:

Approx. 2.4 cu ft

🛡️ Safety Features

Crash Test Ratings:

N/A (Motorcycles are not typically rated by consumer safety organizations like NHTSA or IIHS in the same way as cars.)

Braking System:

Dual front disc brakes, single rear disc brake; linked braking system (optional/standard depending on market); Reflex™ Linked Brembo® Brakes with ABS (standard on FLHTCU)

Lighting:

Halogen headlight, LED passing lamps, front and rear LED turn signals, auxiliary brake lights

Frame:

Steel, rigid, backbone with front and rear cradle

Tire Technology:

Tubeless tires designed for touring stability

💡 Technology Features

System Name:

Boom!™ Box 6.5 GT infotainment system

Features:

6.5-inch color touchscreen, AM/FM/Weather band radio, USB connection for iPod/iPhone, Bluetooth hands-free connectivity, voice recognition, CB/intercom functionality.

Cruise Control:

Electronic cruise control

ABS:

Standard Anti-lock Braking System (ABS)

Gps:

Integrated GPS navigation (on Boom! Box 6.5 GT models)

Communication:

CB radio and passenger intercom system

🔧 Maintenance

First Service:

1,000 miles (1600 km) or 6 months

Subsequent Service:

Every 5,000 miles (8,000 km) or 12 months thereafter

Specific Checks:

Brake pads, clutch, drive belt, tires, suspension, electrical connections, fluid levels, and safety devices at specified intervals.

Engine Oil:

Harley-Davidson Genuine Motor Oil SAE 20W-50 (or equivalent API CI-4 rated oil)

Transmission Oil:

Harley-Davidson Genuine Formula + Transmission Lubricant (or equivalent SAE 85W-140)

Primary Chain Case Oil:

Harley-Davidson Genuine Formula + Transmission Lubricant (or equivalent SAE 85W-140)

Brake Fluid:

DOT 4 (for ABS models), DOT 5.1 (for non-ABS models) - Consult manual for exact specification based on VIN.

Coolant:

N/A (Air-cooled engine)

Fuel Type:

Premium Unleaded Gasoline, 91 octane minimum

Cam Chain Tensioners:

Early Twin Cam models (pre-2007) had issues with hydraulic tensioners. The 2015 Twin Cam 103 generally uses improved tensioners but inspection is still recommended.

Charging System:

Rotor and stator failures can occur, leading to battery charging problems. Regular inspection of output voltage is advisable.

Oil Leaks:

Can sometimes occur at gasket seals or oil cooler lines. Proper torque values and gasket material are crucial.

Infotainment System:

Rare instances of glitches or connectivity issues with the Boom!™ Box audio system may require software updates or diagnostic checks.

📚 Vehicle History

Founding:

1903

Segment Focus:

Cruisers, touring motorcycles, sportbikes, adventure bikes

Electra Glide Origin:

The Electra Glide line dates back to the 1960s, evolving from the FL Duo-Glide. The 'Ultra' designation signifies the top-tier, fully-featured touring model.

Twin Cam Era:

The Twin Cam 103 engine was introduced in various Harley-Davidson models around 2003 and became a dominant powertrain for touring bikes, including the Electra Glide Ultra Classic, through subsequent years.

Manufacturing Location:

York, Pennsylvania, USA; Milwaukee, Wisconsin, USA

🏆 Awards & Recognition

Category:

Consistently recognized as a benchmark in the full-dress touring segment for comfort, amenities, and long-distance capability. Specific awards may vary by publication and year.