Bedienungsanleitung Kona 2016 (Seite 14 von 23) (Englisch)

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KONA OWNER’S MANUAL

WARNING: Never inate a tire beyond the

maximum pressure marked on the tire’s sidewall or

the wheel rim. If the maximum pressure rating for the

wheel rim is lower than the maximum pressure shown

on the tire, always use the lower rating. Exceeding the

recommended maximum pressure may blow the tire

off the rim, which could cause damage to the bike and

injury to the rider and bystanders.

The best and safest way to inate a bicycle tire to the

correct pressure is with a bicycle pump which has a built-in

pressure gauge.

WARNING: There is a safety risk in using gas

station air hoses or other air compressors. They are

not made for bicycle tires. They move a large volume of

air very rapidly, and will raise the pressure in your tire

very rapidly, which could cause the tube to explode.

Tire pressure is given either as maximum pressure

or as a pressure range. How a tire performs under

different terrain or weather conditions depends largely

on tire pressure. Inating the tire to near its maximum

recommended pressure gives the lowest rolling

resistance; but also produces the harshest ride.

High pressures work best on smooth, dry pavement.

Very low pressures, at the bottom of the recommended

pressure range, give the best performance on smooth,

slick terrain such as hard-packed clay, and on deep, loose

surfaces such as deep, dry sand.

Tire pressure that is too low for your weight and the

riding conditions can cause a puncture of the tube by

allowing the tire to deform sufciently to pinch the inner

tube between the rim and the riding surface.

CAUTION: Pencil type automotive tire gauges

can be inaccurate and should not be relied upon for

consistent, accurate pressure readings. Instead, use a

high quality dial gauge.

Ask your dealer to recommend the best tire pressure for

the kind of riding you will most often do, and have the

dealer inate your tires to that pressure. Then, check

ination as described in Section 1.C so you’ll know how

correctly inated tires should look and feel when you

don’t have access to a gauge. Some tires may need to

be brought up to pressure every week or two, so it is

important to check your tire pressures before every ride.

Some special high-performance tires have unidirectional

treads: their tread pattern is designed to work better in

one direction than in the other. The sidewall marking of a

unidirectional tire will have an arrow showing the correct

rotation direction. If your bike has unidirectional tires, be

sure that they are mounted to rotate in the correct direction.

2. TIRE VALVES: There are primarily two kinds of

bicycle tire valves: The Schraeder Valve and the Presta

Valve. The bicycle pump you use must have the tting

appropriate to the valve stems on your bicycle.

The Schraeder valve [Fig. 18a] is like the valve on

a car tire. To inate a Schraeder valve tire remove

the valve cap and clamp the pump tting onto the

end of the valve stem. To let air out of a Schraeder

valve, depress the pin in the end of the valve stem

with the end of a key or other appropriate object.

The Presta valve [Fig. 18b] has a narrower

diameter and is only found on bicycle tires. To

inate a Presta valve tube using a Presta headed

bicycle pump, remove the valve cap; unscrew

(counterclockwise) the valve stem lock nut;

and push down on the valve stem to free it up.

G) SERVICE NOTES FOR KONA DUAL SUSPENSION

• While Kona suspension systems are very torsionally

rigid and require less maintenance than a single pivot

design, bearings and bushings will wear out. Bushing

kits and replacement rear stays are available from Kona.

• Cartridge bearings give the suspension a smoother ride.

These bearings also require more attention than do

bushings. Contaminated bearings can rust & seize, and

cause frame damage. Regularly inspect the bearings and

make sure that they allow the linkage to move freely.

H) TIRES AND TUBES

1. TIRES: Bicycle tires are available in many designs and

specications, ranging from general-purpose designs to

tires designed to perform best under very specic weather

or terrain conditions. If, once you’ve gained experience

with your new bike, you feel that a different tire might

better suit your riding needs, your dealer can help you

select the most appropriate design.

The size, pressure

rating, and on some

high-performance

tires the specic

recommended use,

are marked on the

sidewall of the tire [see

Fig. 17]. The part of

this information which

is most important to

you is Tire Pressure.

But some wheel rim

manufacturers also specify

maximum tire pressure

with a label on the rim. 27

service instructions. If you do not have the

manufacturer’s instructions, see your dealer or contact

the manufacturer.

WARNING: Failure to maintain, check and properly

adjust the suspension system may result in suspension

malfunction, which may cause you to lose control and fall.

If your bike has suspension, the increased speed you may

develop also increases your risk of injury. For example,

when braking, the front of a suspended bike dips. You

could lose control and fall if you do not have experience

with this system. Learn to handle your suspension system

safely [see also Section 4.C].

WARNING: Changing suspension adjustment can

change the handling and braking characteristics of your

bicycle. Never change suspension adjustment unless

you are thoroughly familiar with the suspension system

manufacturer’s instructions and recommendations, and

always check for changes in the handling and braking

characteristics of the bicycle after a suspension adjust-

ment by taking a careful test ride in a hazard-free area.

Suspension can increase control and comfort by allow-

ing the wheels to better follow the terrain. This enhanced

capability may allow you to ride faster; but you must

not confuse the enhanced capabilities of the bicycle with

your own capabilities as a rider. Increasing your skill will

take time and practice. Proceed carefully until you have

learned to handle the full capabilities of your bike.

CAUTION: Not all bicycles can be safely retrotted with

some types of suspension systems. Before retrotting

the suspension of any Kona bicycle, check with Kona to

make sure that what you want to do is compatible with the

bicycle’s design, and whether the warranty will be voided.

Failing to do so can result in catastrophic frame failure.

Kona 2016 Seite 14

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