Shimano Ultegra ST-R8050 User Manual

(English)
DM-R8050-02
Dealer's Manual
ROAD MTB Trekking
City Touring/
Comfort Bike
URBAN SPORT E-BIKE
R8050 series
ULTEGRA
SW-R9150
SW-R9160
SW-R610
ST-R8050
ST-R8060
ST-R8070
FD-R8050
RD-R8050
BR-R8070
SM-EW90-A
SM-EW90-B
EW-RS910
EW-WU111
EW-SD50
EW-SD50-I
EW-JC130
SM-EWC2
SM-JC40
SM-JC41
SM-BTR1
BT-DN110
BM-DN100
SM-BA01
SM-BCR1
SM-BCR2
SM-BCC1
SM-RT800

Shimano Ultegra ST-R8050 Specifications

General

Brand	Shimano
Model	Ultegra ST-R8050
Category	Scooter
Language	English

Summary

INSTALLATION

Electric wire wiring diagram (overall conceptual diagram)

Installation of the dual control lever and brake cable

Details the process of installing dual control levers and their brake cables.

Installation of the front derailleur

Covers installing the front derailleur for direct mount and band type frames.

Direct mount type

Installing the shifting switch

Installing the battery

Covers installing the battery mount for external batteries.

CONNECTION OF ELECTRIC WIRES

Connection of junction A

Connection of junction B

Connecting to the dual control lever

Checking connections

Verifies all electrical connections and component operation.

HOW TO OPERATE

Gear position control

Explains the gear shifting system operation, including restrictions and adjustments.

ADJUSTMENT

Adjustment of the rear derailleur

Details adjusting the rear derailleur, including switch modes and stopper bolt settings.

Adjustment of the front derailleur

Covers checking bolt positions and performing top/low position adjustments.

Adjustment of lever stroke

Guides adjusting the reach for brake lever stroke on different lever models.

Free stroke adjustment (ST-R8070)

Explains how to adjust the free stroke of the ST-R8070 brake lever.

CHARGING THE BATTERY

Charging method

Details the procedures for charging external and built-in batteries.

When charging is not possible

MAINTENANCE

Replacing the brake pads

Instructions for removing and installing new brake pads.

Shimano genuine mineral oil replacement