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q Chain and Sprocket
The chain will typically have a “loose spot” and “tight spot” corresponding with a particular sprocket
rotational position. This is normal and common to all chain driven products due to run-out tolerances of the
freewheel and sprocket. The chain should be adjusted to the ideal tension with chain in the tightest spot.
Proper chain alignment must be maintained. The wheel must not be skewed. If the chain is noisy or rough
running, check the lubrication, tension and alignment of the sprockets, in that order.
WARNING:
To avoid a pinch or injury, keep
fingers away from moving
sprockets and chain.
Need Help? Visit our website for replacement parts, product support and a list of authorized service centers
at www.razor.com or call toll-free at 866-467-2967 Monday - Friday 8:00 AM - 5:00 PM Pacific Time.
REPAIR AND MAINTENANCE
qChecking Spoke Tension
WARNING:
Regularly check the spoke
tension and retighten the
spokes whenever loose. If
you have any doubt, ask an
experienced motorcycle or
bicycle mechanic to inspect
your spokes to determine if
the spokes need tightening or
adjusting.
Spoke
Flange
Spoke
Nipple
Hub
Flange
Spoke
Flange
Rim
Nipple
1
2
3
4
28
27
1 Verify the spoke tension by shaking each spoke with your fingers.
Spoke should not be loose from hub. Look for any play between
where the spoke flanges attach to the hub. Try to turn the nipple us-
ing your fingers. You should not be able to spin any nipple by hand. If
one or more spokes is loose, all spokes must be checked and need to
be tightened with a spoke wrench.
2 Start with spoke closest to the
tire valve stem and tighten each
nipple, in sequence, exactly 1/4
to 1/2 turn. A single 1/4 to 1/2
turn may not be enough to bring
the spokes into proper tension.
Continue tightening all spokes no
more than 1/2 turn in sequence
until all spokes are tight.
Note: More than a 1/2 turn each
can cause the wheel to become
distorted and wobbly thus perma-
nently damaging the wheel.