Viathon G.1 User manual

G.1 USER MANUAL

2
WELCOME
We are excited to welcome you to the Viathon family. This manual contains
important information regarding the safe assembly and use of the Viathon G.1.
In this manual you will learn to assemble the bike from start to finish. From
receiving it packed in the box to a safe and ready to ride bicycle. The tools
required to build it are contained with the box it is shipped in. The proper tools can
also be purchased at most bicycle shops and hardware shops, should you need to
replace them.
You will also learn about the proper maintenance for the Viathon G.1. It is important
to do regular maintenance on your bike to ensure it is riding safely and efficiently.
Enjoy this bike and happy riding!

3
Please ensure that you read and follow the instructions carefully, failure to do so
can lead to injury or death.
If at any time, while you are working on the bike and aren’t sure what to do, don’t
have the appropriate tools, or for any reason are un-equipped to proceed, you can
take this bike to the nearest Viathon dealer or local bike shop.
SAFETY WARNING

4
CONTENTS
FRAME DIAGRAM.......................................................... 6
ASSEMBLY SYMBOLS................................................... 8
SEAT POST INSTALLATION.......................................... 10
WHEEL INSTALLATION ................................................. 12
STEM ALIGNMENT........................................................ 16
HANDLEBAR INSTALLATION....................................... 18
DRIVE SIDE PEDAL INSTALLATION ............................ 20
NON-DRIVE SIDE PEDAL INSTALLATION.................. 22
BRAKE ADJUSTMENT .................................................. 24
SADDLE ADJUSTMENT................................................ 26
TIRE INFLATION ............................................................. 30

5
VIATHONBICYCLES.COM

6
FRAME DIAGRAM
Please carefully inspect the image. It gives you a thorough break down of the
names of the tubes that the frame/ fork consist of and the components that this
bike uses. Please refer back to this image as needed.
1Top Tube
2Fork
3Head Tube
4Down Tube
5Chain Stay
6 Seat Stay
7Seat Tube
8 Seat Post
9Saddle
10 Seat Post Clamp
11 HeadSet Spacer
12 Stem
13 Handle Bar
14 Brake Lever
15 Rear Derailleur
16 Cassette
17 Chain
18 Crank
19 Front Derailleur
20 Brake Caliper
21 Brake Rotor
22 Tire
23 Tire Valve
24 Rim

7
FRAME DIAGRAM
8
9
10
1
6
17
19
4
2
18
3
11 14
12
13
7
5
1615
20
21
24
23
22

8
ASSEMBLY SYMBOLS
Please inspect the following chart. It depicts the symbols that will be used in this
manual and what they mean. Please refer back to this page as needed.
The following section will explain how to assemble the bike. These instructions
use text and images to explain how to safely and accurately assemble the bike.
Please follow these instructions carefully and deliberately. This bike can also be
taken to any Viathon dealer or local bike shop to get assembled.

9
ASSEMBLY SYMBOLS
SYMBOL EXPLANATION
Necessary Hex tool
clockwise rotatioN aNd tigHteNiNg torque of screw
couNter clockwise rotatioN aNd tigHteNiNg torque of screw
grease iNdicated surfaces
Note
assembly Note
cautioN
first iN sequeNce of work steps
Next iN sequeNce of work steps
M8
8Nm
8Nm

10
Before assembling the seat post ,apply carbon fiber assembly gel (such as fiber
grip) to the inside surface of the seat tube. Next, insert the seat tube and tighten
the seat post clamp to 5 Nm.
SEAT POST INSTALLATION
Make sure the minimum insertion mark is completely inside the Seat tube.

11
SEAT POST INSTALLATION
5Nm

12
Place the wheel in the fork drop outs. Align the brake rotor between the pads in
the brake caliper as a guide to place the wheel fully in the dropouts.
WHEEL INSTALLATION

13
WHEEL INSTALLATION

14
Insert the thru axle through the dropouts from the non-drive side. The skewer goes
through the hub then threads into the drive-side dropout. Rotate the skewer and
test flipping the lever from the open to closed position periodically. When you start
to feel some resistance in the half-way position, move to the full-closed position.
If the lever is in a bad position to open and close do not adjust the closing force.
Take the bike to a Viathon dealer or local bike shop
WHEEL INSTALLATION

15
WHEEL INSTALLATION

16
Note: To check if it’s too loose you can lift the front end and drop it from
about one foot high, if you hear or feel rattling it is too loose. You can also
hold the front brake and rock the handlebars forward and backwards, if the
stem cap bolt is too loose you will feel rocking. Turn the stem side to side to
check if it is too tight.
Make sure the stem is aligned so it’s centered above the front wheel. If it needs
to be adjusted, loosen the stem cap bolt and the 2 bolts that clamp the stem to
the fork. The bolts don’t have to be removed, just loosened off enough to rotate
the stem independently from the fork. Align the stem over the center of the front
wheel so they are facing the same direction. Tighten the bolt until there is no play
in the fork. Over tightening will make the steering stiff and unresponsive. Under
tightening the bolt will result in play in the fork. (5.5 Nm Thomson stem U.G.)
STEM ALIGNMENT

17
STEM ALIGNMENT
5.5Nm

18
Start by removing the faceplate. Set the faceplate and bolts down somewhere
accessible. Untangle the cables if necessary. Use carbon assembly gel on the
clamping area of the stem and face plate. Center the handlebars in the stem. Hold
the handlebar in place. Install the faceplate to clamp the handlebars in place.
Tighten bolts gradually in a cross pattern and tighten them to 5Nm. Make sure the
upper grip portion of the brake levers and the bottom portion of the drop bars are
parallel to the ground i.e. horizontal
HANDLEBAR INSTALLATION

19
HANDLEBAR INSTALLATION
5Nm

20
The drive side pedal (marked R) installs on the crank, on the side that has the
chainring(s). Apply a thin layer of grease to the threads. Start threading the pedal
in by hand, turning it clockwise (towards the front of the bike when viewing facing
towards the bike from the drive side). Continue to thread the pedals in using the
8mm allen wrench. Tighten firmly, about 34Nm.
DRIVE SIDE PEDAL INSTALLATION