RUNGU Dualie User manual

Brand: RUNGU

Model: Dualie

Type: User manual

The RUNGU Dualie is an electric bike with two wheels in the back, designed to provide stability and a smooth ride. It features a 30T chainring and a chainguard to prevent your pant cuff from getting caught in the chain. The bike is powered by a motor and has a chain that can be disconnected using a master link. It comes with tools for installation and maintenance, including a crank puller, chain whip, and master link pliers.

V1.0 Rungu Chainguard installation

rungu® dualie chainguard

installation

The Rungu Dualie Chainguard installs on top of the 30T chainring on all Rungu Dualie double-wheel e-

bikes. The chainguard keeps your right pant cuff from being pulled in between the chain and chainring

on your Rungu Dualie.

Note: Do not use the Rungu Dualie Chainguard if your Rungu Dualie uses a larger chainring.

V1.0 Rungu Chainguard installation

Contents

Tools required ............................................................................................................................................... 2

Removing the right crank arm ...................................................................................................................... 2

Installing the chainguard ............................................................................................................................... 6

Replacing the crank arm and chain ............................................................................................................. 10

Tools required

• 4 mm Hex Wrench

• 8 mm Hex Wrench

• Park Tool CCP-22 Crank Puller, or equivalent.

• Chain whip - suggested purchase

• Bike Chain master link pliers - suggested purchase

Removing the right crank arm

First, rotate the chain so that you find the master link on the return side (bottom) of the chain. Use the

master link pliers to compress the master link and disconnect the chain.

V1.0 Rungu Chainguard installation

Drape the upper length of chain over the chainstay as shown below.

Use the 8mm hex wrench to unscrew and remove the crank arm bolt

V1.0 Rungu Chainguard installation

Install the crank puller into the crank arm.

CAUTION: BE CAREFUL TO NOT CROSS THREAD THE CRANK PULLER MOUNTING NUT INTO THE CRANK

ARM. FAILURE TO DO SO MAY DAMAGE THE CRANK ARM. CROSS THREADING IS NOT COVERED BY

MANUFACTURER’S WARRANTY.

CAUTION: MAKE SURE CRANK PULLER MOUNTING NUT IS AT LEAST FIVE (5) THREADS DEEP INTO

CRANK BEFORE TAKING NEXT STEP.

V1.0 Rungu Chainguard installation

Rotate the crank arm puller clockwise to remove the crank arm.

Unscrew and remove the crank arm puller from the crank arm.

V1.0 Rungu Chainguard installation

Installing the chainguard

Use the chain whip to stabilize the chain wheel and use the 4mm hex wrench to loosen and remove

each of the five screws holding the chain wheel to the motor.

V1.0 Rungu Chainguard installation

Place one of the M5x14 screws with a split washer through the chainguard and chainring.

Align both with a mounting hole on the motor, install and finger tighten the screw.

V1.0 Rungu Chainguard installation

Install the next screw and split washer into a mounting hole on the opposite side of the spindle.

Finger-tighten the second screw, then install and finger tighten the remaining three screws and washers.

V1.0 Rungu Chainguard installation

Use a 4 mm hex wrench to hand tighten each screw in a crossing pattern

Finally use the chain whip to secure the chainring and fully tighten each screw using the same crossing

pattern.

V1.0 Rungu Chainguard installation

Replacing the crank arm and chain

While holding the left-side crank arm vertically, install the right crank arm 180 degrees opposite the left-

side onto the square shaft.

V1.0 Rungu Chainguard installation

Insert the crank arm retention bolt and begin threading it into the drive axle.

Use the 8 mm hex wrench to fully tighten the crank arm retention bolt to the drive axle.

V1.0 Rungu Chainguard installation

With the crank arm in place and fully tightened, drape the drive side (top) chain over the top of the

chainring.

Use the master links to reconnect the return side (bottom) of the chain.

V1.0 Rungu Chainguard installation

Use the master link pliers to spread the master links and snap the master link in place

RUNGU Dualie User manual

RUNGU Dualie User manual

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