Sunny SF-RB4417, User Manual

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STEP 2:
Unscrew and remove Bumper (No. 32) located on the Seat Support Tube (No. 20)
using Spanner (No. 51) .
Align the Backrest Frame (No. 22) with the Main Frame (No. 12) . Insert Seat Support
Tube (No. 20) through the Backrest Frame (No. 22) and connect Lower Sensor Wire
1 (No. 47) with Lower Sensor Wire 2 (No. 49) .
Next, slide the Seat Support Tube (No. 20) onto the bottom tube of the Main Frame
(No. 12) and secure it using 2 Screws (No. 7) , 2 Washers (No. 31) and 2 Spring
Washers (No. 30) . Tighten with Allen Wrench (No. 50) .
Reattach Bumper (No. 32) to the Seat Support Tube (No. 20) using Screw (No. 33)
and Washer (No. 34) .
Attach the Rear Support Tube (No. 23) to Seat Support Tube (No. 20) using 2
Screws (No. 36) , 2 Spring Washers (No. 30) and 2 Washers (No. 31) , tighten with
Allen Wrench (No. 50) . Lastly, adjust the Backrest Frame (No. 22) to the desired
position and secure in to place using the Adjustment Knob (No. 48) .