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Need help?Do you have a question about the Shimano Ultegra SM-EW90-A and is the answer not in the manual?
Crucial safety warnings, product usage guidelines, and important notices.
Conceptual diagrams showing the overall wiring of the electric system components.
Wiring diagrams for the external battery type (SM-JC40) and its components.
Wiring diagrams for the built-in type SM-JC41 junction and related components.
Wiring diagrams for the built-in battery type (SM-BTR2/BT-DN110) and its components.
Detailed diagrams showing electric wire connections on the junction A side for drop handlebars.
Wiring diagrams for junction A side connections on clip-on handlebars.
Diagrams for SM-EW90-B junction A side wiring on clip-on bar type.
Wiring diagrams for junction A side on time trial/triathlon handlebars.
Diagrams for EW-RS910 built-in bar end type wiring on drop handlebars.
Wiring diagrams for EW-RS910 built-in frame type on drop handlebars.
Diagrams for EW-RS910 clip-on bar type wiring on clip-on handlebars.
Wiring diagrams for EW-RS910 on time trial/triathlon handlebars.
Steps for installing the dual control lever and brake cable.
Detailed steps for installing the ST-R8050 dual control lever.
Steps for installing the ST-R8060 brake lever onto the handlebar.
Procedures for installing the front derailleur on direct mount frames.
Steps for attaching the front derailleur and setting clearances.
Adjusting the position of the front derailleur for optimal chain alignment.
Procedures for installing the front derailleur using a clamp band.
Adjusting the front derailleur position when using a clamp band.
Steps for installing the rear derailleur onto the bicycle frame.
Steps for installing the SW-R610 sprinter switch onto the handlebars.
Procedures for attaching the SW-R9150 shifting switch to its adapter.
Routing map for SW-R9160 shifting switches used on aero bars.
Wiring diagrams for the external battery type (SM-BTR1) and its components.
Visual guides for connecting electrical components and understanding system layout.
Steps for installing levers, cables, derailleurs, switches, junctions, wireless units, and batteries.
Tools and procedures for installing brake rotors, hoses, calipers, and handlebar connections.
Instructions for adding mineral oil and bleeding the hydraulic brake system.
Guidelines for connecting junction units A and B, and wiring to the dual control lever.
Steps for adjusting derailleurs and installing the chain for optimal performance.
Procedures for charging the battery and identifying charging-related parts.
Procedures for replacing or disassembling parts like bracket covers and lever bodies.
Steps for replacing pulleys, brake pads, and managing mineral oil.
Critical warnings about product usage, safety, and professional installation.
Safety guidelines for handling and charging lithium-ion batteries to prevent hazards.
Safety advice for installing products and performing maintenance tasks.
Detailed safety instructions for lithium-ion batteries and their chargers.
Guidelines for proper bicycle braking techniques and safety during use.
Safety considerations during the installation of hydraulic disc brake components.
Instructions for installing brake hoses and important considerations.
General cautionary advice regarding battery, brake system, and oil handling.
Safety precautions for battery chargers and PC linkage devices.
Safety instructions for handling and installing the wireless unit.
Safety measures for electric wires and rear derailleur installation and maintenance.
Procedures for reinstalling components and resetting the system.
Precautions for using battery chargers and cords to avoid electrical hazards.
Important safety information for end-users regarding chain and wheel security.
Specific precautions for using battery chargers and connecting cables safely.
Critical safety information and precautions for hydraulic disc brake systems.
Precautions for handling mineral oil and understanding the brake system's burn-in period.
Maintenance tips for rear derailleurs and hydraulic disc brakes.
Safety precautions for hydraulic disc brakes and dual control levers.
Guidelines for battery care, charging, lifespan, and storage conditions.
General