K2 Bike S User Manual
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Quick Release Wheels - Are the quick releases tightened properly?
CAUTION: Improperly adjusted wheel quick releases can be extremely dangerous, and can result in failure
during use and severe injuries.
The wheels on your new K2 Bike are attached with convenient single lever quick releases, allowing them to be easily removed and reinstalled. For
detailed instructions on the proper operation of your quick releases, refer to Operation: Quick Releases. Please read and follow these instructions
to ensure safe installation of your bike’s wheels:
Quick Release Tests:
•
Lift the front/rear of the bicycle off the ground and give the tire a sharp downward blow. The wheel should feel solidly
mounted.
•
Try to rotate the quick release levers counter clockwise (without rotating out). A properly tightened quick release lever will
not spin.
If you are uncertain about the wheel tightness, or have any further questions about the proper function of quick release levers, please refer to
Operation: Quick Releases in the next section.
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Tire Inflation - Are your tires pumped up enough?
Inflate your tires to the desired pressure within the range printed on the side wall. Higher pressure within the range provides less rolling
resistance on pavement or hard dirt, and also gives a harder ride. Lower pressure within the range provides improved traction in off road conditions
and a softer, more cushioned ride. K2 Bike recommends that you use a hand pump and gauge to achieve proper tire inflation. Gas station pumps/
gauges are often inaccurate and can easily overinflate tires.
There are two different types of valves for bicycle tubes: schrader and presta. All K2 Bike models use presta valves. Schrader valves are standard
automobile tire valves and can be inflated with most standard pumps. Presta valves are a narrower valve that require the user to unscrew the top
of the valve before inflation. If you do not have a pump that will work with presta valves, an adaptor is available from your local dealer that will
allow the use of a standard schrader pump with a presta valve.
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Brake Function - Are the brakes working well?
Firmly press each brake lever to be sure the brake mechanisms work freely and properly. Be sure there is no binding and that the brake pads squeeze
the rim tightly enough to stop the bicycle safely. The front edge of the pads should be spaced 1 mm from the rim surface with the rear edge 3 mm
from the rim surface. This is referred to as ”toe-in“. For further instructions on brake adjustment, see Maintenance: Brakes. Visually inspect the
brake pads to be sure that:
1.
The brake pads are aligned with the rim surface and are striking the rim in the middle of the sidewall and are not
slipping off of the rim into the tire or off the rim towards the center of the rim.
2.
The trailing (rear) edge of each brake pad is spaced 2 mm further away from the rim surface than the leading
(front) edge of the brake pad. (Referred to as “toe in”)
3.
The curved ”lead pipe” that holds the brake cable housing is firmly seated in its holder that attaches to the top of
the brake arm.
If your brakes are tight, loose, or improperly centered , refer to Maintenance: Brakes for further instructions.
CAUTION: If your brakes are not working properly, do not ride your bicycle. If you are unsure of how to
adjust your brakes, K2 Bike suggests you take your bike to an authorized K2 Bike dealer for service. Improp-
erly adjusted brakes can be extremely dangerous, and can result in failure during use and severe injuries.
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Wheel Straightness - Are the rims rubbing against the brakes?
Check to see that your wheels are not warped. Lift one end of the bike and spin the wheel. Watch the gap between the rim and brake pad. If the
gap remains constant, the rim is straight. If the gap varies, take your wheels to your authorized K2 Bike dealer before riding your bicycle.
While your K2 Bike is designed for off road riding, it will last longer and give you years of enjoyment when properly taken care of. Please follow
these bicycle care instructions to keep your K2 Bike running well.
Pad Aligned with
Rim Surface
Quick Release Check
Quick Release Check
Inflation / Presta valve
Tire
Rim
Pad
Parallel
Brake Pad Alignment
3mm
1mm
Direction
of Rim
Rotation
Brake Pad Toe-in
!
!