K2 Bike K2 BICYCLE manuale d’uso

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3 K2 Bike Owner’s Manual For Multi-Speed Bicycles - 2003 IMPO RTA NT: This m anual contains important safety, perform an ce and servic e information. Read it befor e you take the firs t ride on y our new bi cycle, and keep it for r eference.[...]

4 K2 Bike Owner’s Manual For Multi-Speed Bicycles - 2003 CONTENTS: General Warning Note to Parents 1. Fir st A. Bike Fit B. Safety First C. Mechanical Safety Check D. First Ride 2. Safety A. The Basics B. Riding Safety C. Off-Road Safety D. Wet Weather Ridin g E. Night Riding F. Downhill or Competition Biking G. Changing Componen ts/Adding Access[...]

5 4. Tech A. Wheels 1. Wheel Quick Release De scription 2. Adjusting the Quick Release Mechanism 3. Front Wheel Secondary Retention Devices 4. Removing an d Installing Quick Relea se Wheels 5. Removing and Installing Bolt On Wheels B. Seatpost Quick Release C. Brakes D. Shifting Gears E. Pedals F. Bicycle Suspension G. Tires and Tube s H. K2 Ra zor[...]

6 GENERAL WARN ING: Like any sport, bicycling inv olves risk of injury. By choosing to ride a bicycl e, you assume the res ponsibility for that risk, so you need to know — and to practice — the rules of safe and resp onsible ri ding and of proper use and maintenance. Proper use and maintenance of your bicycle reduces ris k of injury. This Manua[...]

7 No te for Pa rents: As a parent or guardian, you are respon sible for the activi ties and safety of your mi nor child, and that includes making sure the bi cycle is properly fitted to the child; that it is in g ood repair and safe operating condition; that you and your child have le arned and underst and the safe operati on of the bicycle; and th[...]

8 3. Are saddle and seatpost securely clamped? A correctl y tightened saddle will allow no saddle movement in any direction. See Sectio n 3.B for details. 4. Are the stem and handle bars at the right height for you? If not, see Section 3.C on what you c an do abou t it. 5. Can yo u comfort ably ope rate the br akes? If not , you ma y be able to adj[...]

9 C. Mechanical Safety Check Routinely check the cond ition of yo ur bicycle before every ride. Nuts, b olts & stra ps: Make sure nothing is loose. Lift the front whe el off the ground by two or t hree inches, then let it bou nce on the ground. Anything soun d, feel or look loose? Do a quick vi sual and tactile inspection of the whol e bike. An[...]

10 Handlebar Ends : Make sure the handlebar grips are secure and in good condition. If not, repl ace them. Make sure the handlebar ends and extensions are pl ugged. If not, plug them before you ride. I f the handl ebars have b ar end extensions, make sure they are cl amped tight enough so yo u can’t twis t them. If n ot, tighten the m. WARNING: L[...]

11 2. Safety WARNING: Failure to wear a helmet when riding may result in se rious injury or death A. The Basics 1. Always wear a cycling helmet which m eets the latest certification standards and follow t he helmet manuf acturer’s instructions for fit, use a nd care of your helmet. M ost serious bicycle inj uries involve head injuries which mi gh[...]

12 B. Riding Safely 1. Observe all local bicycle laws and regulations. Observe regulations abou t lice nsing of bic ycles, riding on sidewalks, laws regulating bike path and trail use, and so on. Observe helmet laws, child carrier laws and special bicycle traffic laws. It’s your responsibility to know a nd obey the laws. 2. You are sharing th e r[...]

13 10. Never carry anything which obstructs y our vision or your complete control of the bicycle, or which could become entangled in the mo ving pa rts of the bicycle. 11. Never hitch a ride by hold ing on to another vehicle. 12. Don’t do stunts, wheelies or jumps. T hey can cause you injur y and damage your bike. 13. Don’t weave t hrough tr af[...]

14 responsibility to mi nimize your impact on the environment. Leave thi ngs as you found th em; and al ways ta ke out everything you br ought in. 9. Be prepared. If somethi ng goes wrong while you’ re riding off-road, help may not be close. D. Wet Weathe r Riding WARNING: Wet weather impairs trac tion , braking and visibility, both f or the bicy[...]

15 The mounti ng brackets of front and rear reflectors are often designed as cantilev er brake str addle ca ble safety catches which pre vent the s traddl e cable fr om catchi ng on the ti re tre ad if the cable jumps out of its yo ke or breaks. WARNING: Do not r emove the front or rear reflectors or reflector brac ke ts fr om you r bicy cle. They [...]

16 F. Downhill or Com petition Biking If you ride downhill at spee d or in co mpetition, you volu ntarily assume an incr eased risk of injury or d eath. When riding down hill, you ca n reach spe eds seen on mo torcycle s, and therefore face simil ar ha zards and risks. Have your bicycle and equipme nt carefully inspected by a qualified mecha nic an[...]

17 3. Fit W A R N I N G : C o r r e c t f i t i s a n e s s e n t i a l e l ement of bicycling sa f ety, performance and comfort. Ma king the adjustme nts to your bicycl e which result in correct fit for your body and riding c onditions requires experience, s kill a nd special tools. A lwa ys have your dealer make the adjustments o n your bicycle; [...]

18 1. Up and Do wn Adjustment. Check for correct saddle height (fig. 3): • sit on the saddle; • place one heel on a pedal; • rotate the crank until the pedal with your heel on it is in the down position and the crank arm is parallel to the seat tube. If your leg is not completely straight and just touching the cent er of the pedal, your saddl[...]

19 WARNING: After any saddle adju stment, be sure that the sa ddle adjusting mechanism is properly tightened be fore riding. A loose saddle cla mp or seat po st binder can cause damage to the seat post, or can cause you to lose control and fall. A correctly tightened saddle adjustin g mechanism will allow no saddle movement in any direction. Peri o[...]

20 WARNING: On some bicycles, ch anging the stem or s tem height ca n affect the tension of the front brake cable, l ocking the front brake or creating excess cable slack which can make the front brake inoperable. If the front brake pads move in towards the whe el rim or ou t away from the wheel rim when the stem o r stem heigh t is changed, the br[...]

21 4. Tech It’s important to your safety, performance and enj oyment to understa nd how things work on your bicycle. If you have even the slightes t doubt as to whether you understand something in this section of the Manual, talk to your dealer. A. Wheels 1. Wheel Q uick Re lease Desc riptio n. The wheel quick release us es a cam acti on to clamp[...]

22 Secondary retenti on devices fall int o two basic categori es: a. The clip-on type is a part the m anufac turer a dds to th e fr ont wheel hub or front fork. b. The integral type is m olded, cast or machined into the outer fa ces of the front fork d ropouts. WARNING: Removing or disabling the secondary retention device i s extremely dang erous a[...]

23 WARNING: The full force of the cam action is needed to clamp the wheel securely. Holdin g the nut with one hand and turnin g the lever like a wing nut with the other hand until everything is as tight as you can get it will no t clamp the wh ee l safely in the drop outs. CAUTION: If your bike is equi pped with d isk brakes, be care ful not to dam[...]

24 (5) If the lever cannot be pushed a ll the way to a position parallel to the fork blade, return the lever to the OPEN position. Then turn the te nsion-adjustin g nut counterclock wise one-quarter turn and try tightening the lever again. (6) Re- engage the brake q uick-release mechan ism to re stor e correct brake pad-to-rim clearance; spin t he [...]

25 (5) Tighte n the quick-release adjusting nut until it is finger tight against the fr ame dropout; then swing the lever toward the front of the bike un til it is parallel to the frame’s chai nstay or seatstay and is curv ed toward the wheel (fig. 7b). To ap ply enough cl amping force, you s hould have to wr ap your fingers around a frame tube f[...]

26 (3) If your front fork has a clip- on type secondary rete ntion device, disengage it an d go to he ne xt st ep . I f your front fork has an integral se condary retenti on device, loosen t he axle nuts enough to allow wheel removal ; then go to the ne xt step. (4) Raise the front wheel a few inches off the ground and tap the top of thewheel with [...]

27 WARNING: If your bike is equipped with an internal gear rear hub, do not atte mpt to re move the rea r wheel. T he removal and r e-installation of internal gear hubs require sp ec ial knowledge. Incorrect removal or assembly c an result in h ub failure , which can ca use yo u to lose cont rol and fall. d. Installing a Bolt-On Rear Wheel (1) Shif[...]

28 Adjusting the seat post quick release mech anism. The action of the quick rele ase cam squeezes the seat colla r around the seat pos t to hold the seat post sec urely in place. Clamping force is controll ed by the tension adjusting nut. Turnin g the tensio n-adjusting nut clock w ise while keepi ng the cam lev er from rotating incre ases clampin[...]

29 Brakes are designed to control your speed, not jus t to stop the bike. M aximum braking force for each wheel occ urs at the poin t just before the wh eel “locks up ” (stops rota ting) and starts to skid. Once the tire skids, yo u actually lose most of y our st opping force and all directional control . You need to pra ctice slowi ng and s to[...]

30 other hazards and dis tractions. Everyt hing changes when you ri de on loos e surfaces or in wet weather. Tire adhesion is reduced, so the wheels ha ve less cor nering and braking traction and can lock up with less brake force. Moisture or dirt on the brake pads reduces their ability to grip . The way to maintain control on loose or wet surfaces[...]

31 1. How a Derailleur Drive train Wor ks a. Parts of the Drivetrai n. If your bi cycle has a derailleur drivetrai n, the gear- changing mechanism will have: (1) a rear cassette or freewheel sprocket clus ter (2) a rear derailleur (3) usually a front derailleur (4) one or two shifters (5) one, two or three front sp rockets c alled chainrings b. Shi[...]

32 CAUTION: Never move the shifter while pedaling backward, nor pedal backwards after having moved the shifter. This could jam the chain and cause serious damage to th e bicycle. c. Shifting the Rear Derailleur. The rear dera illeur is controlled by the right shifter. The function of the rear derailleur is to move the drive chain from one gear spro[...]

33 At first, practi ce shifting where t here are no obstacles, ha zards or ot her traffi c, until you’v e built u p your confidence. If you have difficul ti es with shifting, the pr oblem could be mechanical adjustment. See your dealer for help. 2. How an Internal Gear Hub Drivetra in Works. If your bicycl e has an internal gear drivetr ain, the [...]

34 E. Ped als Some higher performance bicycles c ome equipped wit h pedals that ha ve sharp a nd potenti ally dange rous sur faces. These surfaces are designed to add safety by increasing adhesion between the rider’s s hoe and the pedal. If your bicycle has this type of hig h-performance pedal, you m ust take extra care to avoid serious inj ury f[...]

35 WARNING: Getting into and out of pedals with toeclips and straps requ ires skill which can only be acquired with practice. U ntil it becomes a reflex action, the technique requires concentration which can distract the r ider’s attention, causing you to lose c ont rol and fall. Practice the use of toeclips and straps where ther e are no obstacl[...]

36 F. Bicycle Suspension WARNING: Failure to maintain, check and properly adjust the su spen sion system may result in suspensi on malfunct ion, which may c a use you to lose control and fall. WARNING: Changing susp ension adjust ment can change the hand ling and braking characteristics of your bicycle. Never chan ge suspension adjustment unle s s [...]

37 G. Tires and Tubes 1. Tire s . Bicycle tires are avail able in many de signs and spec ifications, ranging from general-purpose designs to ti re s designed to perform best under very specific weather or terrain conditions. If, once you’ve gained expe rience with yo ur new bi ke, you feel t hat a different tire might b etter suit your riding nee[...]

38 WARNING: Never inflate a tire beyond the maximum pressure ma rked on the tire’s sidewall. Exceedi ng the recommended m aximum pressur e may blow the tire off the rim, whic h could cause damage to the bike and injury to the ride r and bystanders. CAUTION: Pe ncil type automotive tire gauges ca n be inaccurate and should not be relied upon for c[...]

39 tires. To infla te a Presta valve tube us ing a Presta headed bicycle pump, remove the valve cap; unscrew (c ounterclockwise) the valve stem lock nut; and pus h down on the valv e stem to free it up. T hen pu sh the pum p head on to the valve head , and inflate. To inflate a Presta valve wi t h a Schraeder pump fitting, you’ll need a Presta ad[...]

40 2. Rebound Adjustme nt. All K2 Razorback rear shock unit s are equi pped wi th a rebound adjustment. Rebound is t he mo vement of the shock unit from a compressed mode to an uncompressed mo de. Reb ound damp ing contro ls the speed at which the shock returns to the uncomp ressed position . While riding, the shock unit is constantly moving betwee[...]

41 4. Adjustable Geometry. All Razorbacks offer ad justable geometry. T he integrated s hock mount comes with an A and a B position. T he two positi ons allow you to set up the bicyc le with a 71.8 degree head angle with a 3 inch or 4 inch travel for k. It is also possible to adjust t he geometry to your personal preference. Pleas e see (Fig. 29) f[...]

42 c. Adjusting the Coil Shock Preload. (1) A coil- sprung shock’s prel oad is adjuste d by rotati ng the knurl ed prel oad nut that com presses the coil. By grippi ng the spring as in (fig. 30 ) and rotating, yo u can usually p erform th e adjustment. To begin, loos en the preload completely until th e coil is loos e. Then, ti ghten o ne turn or[...]

43 2. Wheel Travel Adjustme nt. The K2 Tir ade offers thr ee travel opti ons; with two inches of range we call Broadband Travel. Th e travel increments will match up to the most popular suspension fork offerings for a tr uly bala nced ride. P osition A , as in (fi g. 32), will give you 6” of rear wheel travel. Th e other two positions provide 5?[...]

44 NOTE: For more informat ion, visit the Tech areas of www.K2Bike.com and www.FoxRacingShox.com www. answer prod ucts. com J. Lithium Set-Up Instructions 1. Spring Prelo ad Adjustment. To receive the best perform ance from your K2 Lithi um, it is necessary to adjust the suspension. a. What is Sag? “Sag” is the a mount a shock compresse s (or s[...]

45 c. Adjusting the Coil Shock Preload. (1) A coil-sprung shock’s preload is adjusted by rota ting the knurled pr eload nut that compresses the coil. By gripping the spring as in (fig. 30) and rotating , you can usually perform the ad justment. To begin, loosen the preload completely until the coil is loose. Then, tighten one turn or until the co[...]

46 3. Rebound Adjustmen t. All K2 Lithi um shock units are e quipped with rebound adjustment. Rebound is the movement of the shock unit from a compressed mode to an unco mpressed mo de. Rebound damping contro ls the speed at which the shock returns to the un compresse d position. While rid ing, the sho ck unit is const antly moving between c ompres[...]

47 (1) Measure the shock eye- to-eye (t he distance from the center of one mounting bolt to the center of the other mounti ng bolt). Call this dimension “A.” (2) Sit on the bicycle in a normal riding position, weighti ng both the handlebars and saddle. Ha ve an assistant measure the shock unit eye-to-eye. Th is is dimension “B.” (3) T he di[...]

48 3. Rebound Adjustment. The K2 A ttack 2 .0 shock unit s are e quippe d with rebou nd adjustment. Rebound is the movement of t he shock unit from a comp ressed mo de to an uncompre ssed mode. Reboun d damping c ontrols the speed at which t he shock ret urns to t he uncomp ressed pos ition. Whi le riding , the shock unit is co nstantl y moving bet[...]

49 • Ask your dealer for copies of the m anufacturer’s instal l ation and service instruct ions for the components on your bike, or contact the compone nt manufacturer. • Ask your dealer to rec ommend a book on bicycle r epair. • Ask your dealer about the availability of bicycle repair courses in your area. Regardless of which op tion you s[...]

50 3. After Every Long or Hard Ride: If the bike has been exposed to water or grit; or at l east every 100 miles: Clean the bike and lightl y oil the chai n. Wipe off excess o il. Lubrication is a function of climate. Talk to your dealer about the best lubrican ts and the recommended lubricat ion fre quency for your area. 4. After Every Long or Har[...]

51 6. Every 25 Hours of Hard Off-R oad Ri ding or 50 Hours o f Road Riding: Take your bike to your d ealer for a complete checkup. WARNING: Like any mechanical de vice, a bicycle and its components are subject to wear a nd stress. Different materials and mech anisms wear or fatigue from stress at di fferent rates and have different life cycles. If [...]

52 B. If Your Bicycle Sustains An Im pact: First, check yourself for injuries, and ta ke care of them as best you can. Seek medical help if necessary. Next, check your bike for damage, and f ix what yo u can so y ou can get ho me. Then, tak e your bicycle to your dealer for a thorough ch eck. WARNING: A crash or other impa ct can put ex traordinary[...]