Viathon G.1, User Manual

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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