Dedicated Subsystem WorkbenchPlatform Gen: 2021–2026

2024 Harley Davidson Revolution Max 1250 / 1250T (Pan America / Sportster S) Throttle Body Synchronization & Fuel Delivery

Multi-cylinder vacuum sync specs, idle speed, EFI high-pressure fuel rail PSI, and injector resistance multimeter bench for 2024 Harley Davidson Revolution Max 1250 / 1250T (Pan America / Sportster S).

Technical PassportOEM VERIFIED

Engine

1252cc

Cooling

Liquid-Cooled

Final Drive

525 Chain

Engine Oil

4.50 L (4.75 US qt)

Spark Plug

HD 6R10 / NGK LMAR9D-J

Front Tire

120/70R19 (Pan America) / 160/70R17 (Sportster S)

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Gen 2021–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2021 through 2026.

Select Model Year:(Active: 2024)
6 Production Years (2021–2026)

2021 2022 2023 2024 2025 2026

Suggested Items4 Verified Workshop Consumables Available for this Job

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FSM Induction Calibration60° V-Twin (Revolution Max 1250) (2 Throttle Bores)

Fuel Delivery, Throttle Body Synchronization & Manometer Balancer

Factory intake depression specifications (260 mmHg), electronic fuel pump pressure testing (58 PSI), injector resistance, and interactive multi-column manometer balancing.

Warm Idle: 1,200 - 1,300 RPM

Quick Workshop Diagnostic Presets

Simulate Throttle Linkage Asymmetry, Hunting Idle, or Intake Boot Vacuum Leaks

OPTIMAL SYNCHRONIZATION: BALANCED (Δ ≤ 15 mmHg)

Diagnostics:Max Differential: Δ 0 mmHg (Factory Max Tolerance: ≤ 15 mmHg)

All 2 throttle plates pull uniform intake depression within factory engineering tolerance (≤ 15 mmHg / 2.00 kPa). Delivers immediate linear throttle pickup, silky smooth idle, uniform cylinder torque pulses, and balanced exhaust temperatures.

Workshop Multi-Column Fluid Manometer

Damped intake depression columns. Target spec: 260 mmHg (±15 mmHg) at warm idle (1,200 - 1,300 RPM).

Reference: Dual Independent Electronic Ride-by-Wire Throttle Actuation

Mechanism: Bypass Screws

CYL #1

MASTER REF

260mmHg

34.7 kPa · 10.2 inHg

±0 mmHg (Exact Target)

Fixed Reference Master. Synchronize all slave throttle bodies to match this column.

CYL #2

SLAVE BORE

260mmHg

34.7 kPa · 10.2 inHg

±0 mmHg (Exact Target)

Vacuum Take-Off Ports: Internal MAP sensor manifold runner taps

Damping Protocol: Restrictor valves must be adjusted until columns oscillate no more than ±5 mmHg per intake stroke.

Fuel Pump Pressure & 5-Min Hold Test

EFI Pressure Rail

Running Fuel Pressure

58 PSI(4.00 bar)

OEM Running Spec

58 PSI (±3 PSI)

PASS: WITHIN OEM RUNNING SPEC

Fuel pump delivery pressure is 58 PSI (Factory spec: 58 PSI ± 3 PSI / 4 bar). High-pressure regulator and pump rotor operating within factory design threshold.

Connect mechanical gauge to the quick-disconnect fuel rail fitting using an OEM banjo or T-adapter.

Fuel Injector Resistance & Induction Specs

Multimeter Bench Check

OEM Injector Solenoid Resistance

11.5 - 13.0 Ω at 20°C

Measure across injector 2-pin harness socket with ignition OFF. Internal coil resistance increases by ~0.4% per °C rise above 20°C (68°F). Replace injector if resistance reads open (> 100 kΩ) or shorted (< 2 Ω).

Bore Diameter

50 mm

Operating Temp

85°C (185°F)

Induction Type

Electronic Sequential Port Fuel Injection (ESPFI) with Dual Downdraft 50mm Throttle Bodies

Injector O-rings must be lubricated with a light coat of clean engine oil before seating into fuel rail.

4-Step Throttle Body Synchronization Protocol

Official workshop manual step-by-step checklist. Mark each step as you complete it on the workbench.

0 of 2 Steps Complete

1CLICK TO MARK DONE

Electronic Throttle Body Adaptation

Throttle synchronization is managed by dual electronic servo motors. Clean throttle plate carbon deposits with intake cleaner.

2CLICK TO MARK DONE

Fuel Rail Pressure Verification

Verify fuel pump priming pressure reaches 58 - 62 PSI (4.0 bar) and holds > 50 PSI for 10 minutes.

Shop Carb & Throttle Cleaners→Shop Carb & Throttle Sync Tools→Shop Fuel Pressure Test Gauges→

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

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

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2024 Harley Davidson Revolution Max 1250 / 1250T (Pan America / Sportster S) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

5 Documented Bulletins

Bulletin #M1524M1524: RECALL 0177 - 2019 - 2021 SPORTSTER - HEADLAMP BULB SHIELD

Source: Harley_M1524_Recall0177.pdf

Mandated Torques:Torque: 5.8–6 in-lbs (0.66–0.68 N·m) (Bulb Shield Screw)Torque: 35–44 in-lbs (4–5 N·m) (Bracket to Visor Screws)Torque: 10–16 ft-lbs (13.5–21.6 N·m) (Visor Bracket Screws)

Consumable Specs:Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97)

Genuine Part Numbers:68297-05A9150010799642-97

Fastener Stack ArchitectureExploded View: Headlamp Visor Fastener & Vibration Stack (Bulletin M1524)

3-Stage Torque Map

Select any fastener or shield component to inspect exact torque specifications.

Component InspectorNHTSA Recall 0177 / M1524

Self-Tapping Shield Screw with Blue Loctite 243

Consumable: Loctite 243 (HD # 99642-97)

Factory Torque Specification

5.8–6.0 in-lbs (0.66–0.68 N·m) (CRITICAL LOW TORQUE)

Technical Assembly Note

MUST apply Loctite 243 Blue Threadlocker. Due to reuse of self-tapping screw into stamped bracket, STRICTLY do not exceed 6 in-lbs or threads will strip.

Vibration & Chemical Retention

Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97) mandatory on bulb shield screw to prevent thermal loosening.

Bulletin #M1568M1568: SAFETY RECALL 0635 - FRONT BRAKE LINE BANJO BOLT ASSEMBLY

Source: Harley_M1568_Recall0635.pdf

Mandated Torques:Torque: 19–21 ft-lbs (25.8–28.5 N·m) (Front Brake Line Banjo Bolts)

Consumable Specs:Harley-Davidson Platinum Label DOT 4 Brake Fluid

Genuine Part Numbers:2879401841751-06A41800770418007724180077341800774

Technical IllustrationExploded View: Hydraulic Brake Switch & Banjo Bolt Assembly

Official NHTSA PDF

Hover or Click Component to Inspect

Component SelectedOEM # 41747-06

Cross-Drilled Banjo Bolt

Cross-drilled hydraulic passage. Torque to exact factory range. Do NOT over-tighten or bolt can shear.

Torque Specification:19–21 ft-lbs (25.5–28.5 N·m)

Select Stack Layer:

Electrical Harness Schematic40-Pin BCM Electrical Harness Pinout & Wiring Map (Bulletin M1568 / Recall 0635)

40-Way Sealed Header • Cavity F3

Click Pin F3 or center keyway to inspect technical harness specifications

Inspection TargetRecall 0635 / M1568

BCM Terminal Cavity F3 (Recall Signal Input)

Jumper Terminal Wire # 69203239

Mechanical Engagement:Terminal Click-Lock Retention

MANDATORY RECALL PIN INSERTION. Insert jumper terminal into cavity F3 of the 40-way BCM harness connector until an audible click is heard. Tug lightly to verify positive secondary terminal engagement.

Interactive Circuit Nodes:

STEP 1: HARNESS CLICK VERIFICATIONSlide terminal wire 69203239 into Cavity F3 until secondary TPA wedge clicks flush. Perform gentle pull test.

STEP 2: CHASSIS GROUND TORQUEClean left-side frame ground stud. Fasten jumper ring terminal to 45–60 in-lbs (5.1–6.8 N·m).

STEP 3: DIGITAL TECHNICIAN II SYNCFlash BCM software to 28794018 YM0+. Depress rear brake pedal to trigger auto-stop calibration countdown.

Chassis Routing ArchitectureTrike Frame Jumper Wire Routing & EHCU Ground Map (Bulletin M1568 / Recall 0635)

Figures 5 & 6 • Behind EHCU

Click routing channel, ground stud, cable straps, or switch to view shop notes

Chassis Routing NodeRecall 0635 / M1568

Under-Tray Sub-Harness Route (Behind EHCU)

Recall Routing Path (Figure 6)

Mechanical Anchor:Protected Chassis Channel

MANDATORY ROUTING CLEARANCE. Route jumper harness # 69203239 behind the Electro-Hydraulic Control Unit (EHCU) assembly. Keep clear of hot exhaust pipes and moving suspension linkages.

Interactive Routing Targets:

Bulletin #M1572M1572: INSTRUMENT MODULE SOFTWARE UPDATE - PAN AMERICA & SPORTSTER S

Source: Harley_M1572_SupportDocs.pdf

Bulletin #M1167Safety Recall 0118: Fuel Valve Petcock Standpipe Inversion Inspection & Replacement

Source: Harley_M1167_Recall0118.pdf

Mandated Torques:Torque: 15–20 ft-lbs (20.3–27.1 N·m) (Fuel Valve Petcock Bung Nut)

Consumable Specs:PTFE Fuel-Resistant Thread SealantViton O-Ring Fuel Gasket

Genuine Part Numbers:61338-0262169-02A61338-94D62169-95C

Hydraulic Fuel Valve SchematicExploded View: Fuel Shut-Off Valve & Standpipe (Recall 0118 / Bulletin M1167)

Torque: 15–20 ft-lbs • PTFE Sealant

Click standpipe, collar nut, or vacuum tap to inspect Recall 0118 specs

Inspection TargetRecall 0118 / ML-426

Reserve Standpipe Tube (Defect Analysis)

Suspect Codes: 61338-02, 62169-02A, 61338-94D

Mechanical Engagement:Internal Hydraulic Passage

RECALL 0118 DEFECT LOCUS. Supplier inverted the valve rotor passages. Setting lever to ON drew fuel through the short bottom reserve hole, while RESERVE drew from the tall standpipe, leaving rider with zero reserve fuel.

Interactive Assembly Nodes:

Bulletin #M1720M1720 (REV A): PAN AMERICA ECM & BCM COLD START & QUICKSHIFTER UPDATE

Source: NHTSA_MC_11034748_M1720.pdf

Genuine Part Numbers:Special Tool: DIGITAL TECHNICIAN II (HD-48650)

Explore Other Subsystems for this 2024 Harley Davidson Revolution Max 1250 / 1250T (Pan America / Sportster S)

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Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

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Subsystem Guide/fluids

Fluids & Capacities

Oil: 4.50 L (4.75 US qt) • Coolant: N/A • Brake: DOT 4 Platinum Glycol Ether High-Temp

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: 50A Main Fuse • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: 13.0:1 (Pan America) / 12.0:1 (Sportster S) • Std: 190-225 PSI • Limit: 155 PSI

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/electrical

Charging & Battery

Battery: YTX14-BS / YTX20HL-BS • CCA: 310 • Regulated: 14.2 - 14.8 V DC at 3,000 RPM

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Subsystem Guide/tires

Tires & Gearing

Front: 120/70R19 (Pan America) / 160/70R17 (Sportster S) • Rear: 170/60R17 (Pan America) / 180/70R16 (Sportster S)

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: 190 mm • Rear Travel: 190 mm

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: Every 5,000 mi (8,000 km) mi • Valves: N/A • Plugs: Every 30,000 mi (48,000 km) Iridium mi

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