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Avigo BICYCLE User Manual

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  • Page 1 the road to fun...
  • Page 2 CORRECT FITTING LIVES! MAKE SURE YOUR HELMET COVERS YOUR FOREHEAD. ALWAYS WEAR A PROPERLY FITTED HELMET WHEN YOU RIDE YOUR BICYCLE. DO NOT RIDE AT NIGHT. AVOID RIDING IN WET CONDITIONS. INCORRECT FITTING FOREHEAD IS EXPOSED AND VULNERABLE TO SERIOUS INJURY.
  • Page 3 PLEASE RETAIN YOUR SALES RECEIPT AS PROOF OF PURCHASE. FILL OUT THE INFORMATION BELOW AND KEEP THIS MANUAL IN A SAFE PLACE. BRAND/DESCRIPTION: MODEL #: PRODUCTION DATE: SERIAL #: DATE OF PURCHASE: STORE/PLACE OF PURCHASE:...

  • Page 4: About This Manual

    It is important for you to understand your new bike. By reading this manual before you go out on your first ride, you’ll know how to get the most from your new bicycle. It is also important that your first ride on your new bicycle is taken in a controlled environment, away from cars, obstacles, and other cyclists.
  • Page 5 A SPECIAL NOTE FOR PARENTS It is a tragic fact that most bicycle accidents involve children. As a parent or guardian, you bear the responsibility for the activities and safety of your minor child. Among these responsibilities are to make sure that the bicycle which your child is riding is properly fitted to the child: that it is in good repair and safe operating condition;...
  • Page 6 You will save time and the convenience of having to go back to the store if you choose to write or call us concerning missing parts, service questions, operating advice, and/or assembly questions.
  • Page 7 INDEX TOOLS PARTS LIST/IDENTIFICATION BEFORE YOU RIDE 6-25 ASSEMBLY 26-64 HOW THINGS WORK 65-75 SERVICING 76-78 DETAILED MAINTENANCE 79-107 TROUBLE SHOOTING 108-110 REGISTRATION CARD AND WARRANTY 111-116 WARNING/IMPORTANT DYNACRAFT BSC, INC. Take notice of this symbol throughout this manual 89 South Kelly Road, American Canyon, CA and pay particular attention to the instructions 94503 Customer Service 1.800.551.0032 blocked off and preceded by this symbol.

  • Page 8: Table Of Contents

    TOOLS Below the Bar Shifters Hand Brake SADDLE & SEAT POST Side Pull Brake Inspection PARTS LIST/ BICYCLE CARE Cantilever IDENTIFICATION Lubrication Basic Maintenance U-Brake Saddle Adjustment Mountain Bicycles Storage Check your Brakes Adjustment Sidepull Dual Suspension Bicycles Security Training Wheels...

  • Page 9: Tools Required

    TOOLS REQUIRED 1. Allen key wrenches: 4 mm, 5 mm, 6 mm, 8 mm 2. Adjustable wrench 3. Tire lever 4. Standard Phillips head screwdriver 5. Open end or pedal wrench 15 mm 6. Standard slip joint pliers 7. Tire pump 8.

  • Page 10: Product View/Parts/Identification

    MOUNTAIN BICYCLES Mountain bicycles are designed to give maximum comfort over a wide variety of road surfaces. The wider handlebars and convenient shift lever position make them very easy to control. Wider rims and tires give them a softer ride with more traction on rough surfaces. The frame and fork on mountain bicycles are much sturdier than those on racing style bicycles.
  • Page 11 DUAL SUSPENSION MOUNTAIN BICYCLES Dual Suspension Mountain bicycles are designed to give maximum comfort over a wide variety of road surfaces. Shift Lever Brake Lever Handlebar Stem Head Set Seat Handlebar Head Tube Quick Release Front Reflector Top Tube Rear Reflector Gear Control Cable Down Tube Seatpost...

  • Page 12: Bmx Bicycles

    BMX BICYCLES BMX bicycles are a popular general purpose type most suited for young riders. They are valued because of their sturdy and simple construction, and low maintenance. Handlebar Grip Brake Lever Handlebar Stem Handlebar Head Set Front Reflector Seat Head Tube Brake Control Cable Quick Release...

  • Page 13: Road Bicycles

    ROAD BICYCLES Road bicycles are designed for fast travel, hard training and competition on paved surfaces exclusively. It is the lightest, most aerodynamic and “fastest” type of bicycle. Shift Lever Handlebar Seat Handlebar Stem Seatpost Head Set Rear Reflector Head Tube...

  • Page 14: Standover Height

    It is the distance from the ground to the top each bike type our limits were determined through tube of the bicycle’s frame at that point where the top lab testing using international standards that seemed of the inseam of your pants is when straddling the reasonable.

  • Page 15: Correct Frame Size

    It is assumed that the bicycle you have bought is sized correctly for the user. Some parents make the mistake of buying a bicycle too large for the intended rider, planning on the child “growing into” it. There should be a minimum of 1 inch clearance above the highest point of the top tube when the child is straddling the bicycle with both feet on the ground (see drawing below).
  • Page 16 RULES OF THE ROAD AND SAFETY TIPS NOTE: Like any sport, bicycling involves risk of injury and damage. By choosing to ride a bicycle, you assume the responsibility for that risk; not the people who sold you the bike; nor the people who made it;...
  • Page 17 RULES OF THE ROAD AND SAFETY TIPS (continued) THE BICYCLE ONLY, not the bicycle and the rider. USE CAUTION AT ALL INTERSECTIONS AND STOP SIGNS. STOP AND LOOK BOTH WAYS 17. AVOID THE FOLLOWING HAZARDS: Drain grates, BEFORE PROCEEDING. potholes, soft road edges, gravel, sand, wet leaves, 12.
  • Page 18 WARNING WARNING Although many catalogs, advertisements and articles about bicycling Bicycles and bicycle parts have depict riders engaged in extreme riding, this activity is extremely limitations with regard to strength dangerous, increases your risk of injury or death, and increases the and integrity, and this type of severity of any injury.
  • Page 19 (continued) 4. Yield right of way to pedestrians and animals. Ride in a way that does not frighten or endanger them, and give them enough room so that their unexpected moves don’t endanger you. 5. Be prepared. If something goes wrong while riding off-road, help may not be close. 6.

  • Page 20: Night Riding

    NIGHT RIDING Riding a bicycle at night is much more dangerous than riding during the day. A bicyclist is very difficult for motorists and pedestrians to see. Therefore, children should never ride at dawn, at dusk or at night. Adults who choose to accept the greatly increased risk of riding at dawn, at dusk or at night need to take extra care both riding and choosing specialized equipment which helps reduce that risk.

  • Page 21: Cornering Technique

    CORNERING TECHNIQUE Brake slightly before cornering and prepare to lean your body into the corner. Maintain the inside pedal at the 12 o’clock position and slightly point the inside knee in the direction you are turning. Keep the other leg straight, don’t pedal through fast or tight corners.

  • Page 22: Riding Position

    While sitting on the bicycle with one pedal at it’s lowest point, place the ball of your foot on that pedal. The correct saddle height will allow the knees to be slightly bent in this position.

  • Page 23: Handlebar Height

    You may wish to try different heights to find the most comfortable position. WARNING Over tightening the stem bolt or headset assembly may cause damage to the bicycle and/or injury to the rider. WARNING CAUTION The stem’s “Minimum Insertion”...

  • Page 24: Safety Checklist

    • Ensure that the handlebars are set correctly in relation to the forks and the direction of travel. • Check that the head set locking mechanism is properly adjusted and tightened. • If the bicycle is fitted with handlebar end extensions, ensure they are properly positioned and tightened.
  • Page 25 5. Chain • Ensure chain is oiled, clean and runs smoothly. • Extra care is required in wet or dusty conditions. • On bicycles equipped with coaster brakes, check for proper chain tension. 6. Derailleurs • Check that front and rear mechanisms are adjusted and function properly. •...
  • Page 26 • fit correctly WARNING Always wear a properly fitted helmet when riding a bicycle. Falling off your bicycle without a helmet can cause serious injury or death. Many states require specific safety devices. It is your responsibility to familiarize yourself with the laws of the state where you ride and comply with all applicable laws, including properly equipping your- self and your bike as the law requires.
  • Page 27 Sidewalk Bicycle. FRONT MOUNT REFLECTOR BRACKET ASSEMBLY Slide reflector over bracket as shown in diagram and ensure that the tab clicks into the top hole of the bracket.
  • Page 28 SEAT AND HANDLEBAR MOUNTING REFLECTORS Slide reflector over bracket (shown on page 19) and ensure that the tab clicks into the top hole of the bracket. Next, remove the clamp screw and open the clamping reflector bracket. Place clamping reflector bracket around the handlebar or seatpost.
  • Page 29 Bicycles come with a variety of gear Pedal configurations from 5 to 27 speeds. A 5-6 speed bicycle will have a single front chain-wheel, a rear derailleur, and Guide Pulley Front Chainwheels 5 or 6 cogs on the rear hub.
  • Page 30 High Middle For optimal performance, High For optimal performance, NOT RECOMMENDED NOT RECOMMENDED Recommended Chainwheel/Rear Sprocket Gear Combinations Hand Grip Shifters Front Low Gear Rear Low Gear Many bicycles are now being equipped with a shifting mechanism that is built into the handlebar grips and does not make use of separate levers.
  • Page 31 Thumb Shifters (Top Mounted) Left hand lever Right hand lever Many mountain style bicycles are equipped with shifters mounted on the top of the handlebars and operated by the thumbs. To select a lower, easier gear, shift to a bigger rear cog and a small chainwheel.

  • Page 32: Bicycle Care

    • Store your bicycle under shelter. Avoid leaving it in the rain or exposed to corrosive materials. Riding on the beach or in coastal areas exposes your bicycle to salt which is very corrosive. Wash your bicycle frequently and wipe or spray all unpainted parts with an anti-rust treatment.
  • Page 33 STORAGE Keep your bicycle in a dry location away from the weather and the sun. Ultraviolet rays may cause paint to fade or rubber and plastic parts to crack. Before storing your bicycle for a long period of time, clean and lubricate all components and wax the frame.

  • Page 34: Derailleur Geared Bicycles

    Includes 20”, 24”, and 26” Wheel Mountain Bikes. Assembly is the same for men’s and women’s bikes. FOREWORD: Assembling a bicycle is an important responsibility. Proper assembly not only gives the rider more enjoyment of the bicycle, it also offers an important measure of safety.
  • Page 35 HANDLEBARS Most of our bikes are equipped with a “quill” stem (figure X). To assemble the handlebars remove the protective cap from the wedge end of the stem bolt and loosen the bolt using the 6 mm Allen key. Some models may use a 13 mm hexagonal bolt instead of an Allen key bolt.
  • Page 36 Handlebar Top Cap Spacer be visible above the headset. There are different styles Handlebar Stem of handlebar clamps, but all attach to the bicycle with a Steerer Clamp Bolts Clamp Bolts stem bolt and wedge nut. Spacer Handlebar Stem Clamp...
  • Page 37 5 mm Allen key or Phillips head screwdriver. (figure 1) Handlebar with grip shifter. (figure 2) Top mounted thumb shifter. NOTE: When assembling the bicycle or setting it up for a rider, the shifters, brake levers and bar ends may need to be rotated on the handlebars to a position that allows safe and easy operation of the controls.
  • Page 38 Crown CAUTION Do not attempt to disassemble a suspension fork yourself. Consult a professional bicycle repair technician. Fork Leg Check the tightness of the headset and the fork. Rotate the fork checking for smoothness. If it feels like the fork is binding, then an adjustment will need to be made to the headset.
  • Page 39 Insert the seat assembly into the frame of the Seatpost Clamp bicycle and adjust the seat to the proper height. The seatpost must be inserted to at least the “Minimum Insertion” line marked on the Quick seatpost.
  • Page 40 The quick release mechanism must be Minimum in injury and Insertion Mark. damage to bicycle. tightened securely to prevent a sudden shift of the seat when riding. Failure to do this may cause loss of bicycle control and serious injury or death. ASSEMBLY...
  • Page 41 Attach Seat Here NOTE: Comfort style bicycles may Boot be equipped with a suspension seatpost (see diagram - left). Minimum Insertion Mark Insert this end into frame ASSEMBLY...
  • Page 42 (counter-clockwise) thread. It is very important Dust Cap that you check the crank set for correct adjustment and tightness before riding your bicycle. New three piece cranks whether bolted (cotterless) or boltless (binder end) may become loose with initial use, refer to pages 96 - 100 for crank type identification and instructions for adjustment and maintenance.
  • Page 43 BRAKES CANTILEVER Determine which type of brake your bike is equipped with and refer BRAKES 1. Install the cable to the appropriate assembly instructions. For more information on into the link wire. brake adjustment and maintenance, refer to pages 35-41. CANTILEVER BRAKES - UTILIZING A LINK WIRE Cable End If fitted with cantilever types brakes, insert the brake cable into the...
  • Page 44 /lbs.) ASSEMBLY...
  • Page 45 V-STYLE BRAKES If not already assembled, take the brake noodle from the parts box and slide the cable through the larger opening. The cable housing will then seat into the end of the noodle. Slide the cable through the cable lead on the end of the left brake arm, this will cause the noodle to fit into the lead.
  • Page 46 V-BRAKE 1. If fitted with V-Brakes, insert the brake body into the 2. While holding the shoe against the rim, adjust center spring hole in the frame mounting boss, and the amount of shoe protrusion by interchanging the then secure the brake body to the frame with the link position of the B washers (i.e.
  • Page 47 3. While holding the shoe against the 5. Adjust the balance with the spring rim, tighten the shoe fixing nut. tension adjustment screws. 4. Pass the inner cable through the inner cable lead, making sure that the noodle 6. Depress the brake lever about 10 times is properly seated in the outer cable lead.

  • Page 48: Check Your Brakes

    To test, apply the brakes while may pitch the rider over the handlebars, causing trying to push the bike forward to make sure they serious injury or death. will stop the bicycle. Never ride a bicycle that is not functioning properly. ASSEMBLY...

  • Page 49: Disk Brakes

    Disk brakes require breaking in before full breaking power is achieved. While the break in period varies by model and manufacturer, a distance of 13 miles or 40 to 50 applications is the minimum before using the brakes for downhill conditions, for sudden stops, or other serious braking.

  • Page 50: Rear Derailleur

    DERAILLEUR Although the front and rear derailleur are initially adjusted at the factory, you will need to inspect and possibly readjust both before riding the bicycle. REAR DERAILLEUR Begin by shifting the rear shifter to largest number indicated, disconnect the cable from the rear derailleur cable anchor bolt, and place the chain on the smallest sprocket.

  • Page 51: Front Derailleur

    - towards the frame, while turning it clockwise will direct the chain outboard - away from the frame. WARNING Do not ride a bicycle that is not shifting properly. Overlooking proper adjustments may cause irreparable damage to the bicycle and/or bodily injury. Never move the shifter while pedaling backward, nor pedal backwards after having moved the shifter.

  • Page 52: Dual Suspension

    Anchor Bolt Spring handling and braking characteristics of your bicycle. Always check for changes in the performance of your bicycle by taking a careful Spring Plate test ride in a hazard free area. If your bike has suspension equipment, the increased speed you may develop also increases your risk. When braking, the front of a suspended bike dips.

  • Page 53: Rear Pivots

    REAR PIVOTS The pivot assembly is a simple mechanism that allows the rear swing arm to move up and down in combination with a rear suspen- sion unit. Size, shape and components will vary between models; however, operating principles are the same. The pivot point consists of a split bushing set, held in place by a bolt that rotates inside of fixed bushings in the frame.
  • Page 54 Kickstand If the kickstand is not mounted to your bicycle, place the bicycle in an upright position against a wall or have someone hold it upright. Place the kickstand in the bracket mounted on the frame and use the fixing bolt secure the kickstand in place.
  • Page 55 FRONT FENDER ASSEMBLY FOR SHOCK FORKS 1. With front wheel off, install preassembled fender 2. Slide a washer onto the mounting bolt and into fork legs facing forward with fender bracket insert through brake bridge and fender bracket. positioned behind the fork. Place the other washer onto the mounting bolt and secure the mounting nut as shown above.
  • Page 56 FRONT FENDER ASSEMBLY FOR REGULAR FORKS 1. Install preassembled fender into fork legs facing 2. Slide a washer onto the mounting bolt and insert forward with fender bracket positioned behind through fork and fender bracket. Place the other the fork. washer onto the mounting bolt and secure the mounting nut as shown above.
  • Page 57 FRONT BASKET ASSEMBLY Before assembling, loosen and remove all mounting bolts and nuts from mounting holes. STEP 1 STEP 2 STEP 3 1. Position the basket rack to the 1. Position the basket against the 1. Position the basket against the fork end.

  • Page 58: Rear Rack Assembly

    Before assembling, loosen and remove all mounting bolts and nuts from mounting holes. STEP 1 STEP 2 STEP 3 1. Place rack onto rear of bicycle 1. Position the rack arm against the 1. Position the rack against the as shown above.

  • Page 59: Final Check

    • Check that the brakes operate smoothly with no binding. To test, apply the brakes while trying to push the bicycle forward to make sure they will stop the bicycle. Do not ride your bicycle unless the brakes are functioning properly.

  • Page 60: Getting Started

    Includes 16” and 20” BMX bikes. Assembly is the same for boys and girls bikes. Foreword: Assembling a bicycle is an important responsibility. Proper assembly not only gives the rider more enjoyment of the bicycle; it also offers an impor- tant measure of safety. GETTING STARTED Open the carton from the top and remove the bicycle.
  • Page 61 The are different styles of handlebar clamps, but all attach to the bicycle with a stem bolt and wedge nut. Typical of the BMX bicycle is the Stem must be tight enough for the wedge nut four bolt pillow block configuration shown above.
  • Page 62 Thread the nut on the seat clamp loosely. Insert the larger end of the seatpost into the seat tube of the bicycle frame observing the Minimum Insertion Mark on the seatpost. Position the top surface of the seat parallel with the ground.
  • Page 63 (clockwise) thread. The left pedal attaches to the other crank arm and has a left-hand (counterclockwise) thread. It is very important that you check the crank set for correct adjustment and tightness before riding your bicycle. WARNING Attachment of an incorrect pedal into a crank arm will cause irreparable damage.

  • Page 64: Hand Brake

    HAND BRAKE Determine which type of brake your bike is equipped with and refer to the appropriate assembly instructions. For more information on brake adjustment and maintenance, refer to pages 35-41. It is important to become familiar with the use of hand brakes.
  • Page 65 CANTILEVER CANTILEVER BRAKES If fitted with cantilever type brakes, insert the brake cable into the link wire lead, and notch the cable end into the slot of the left brake arm. Loosen the anchor bolt on the right brake arm and thread brake cable through it. Adjust the brake shoes using a 10 mm wrench and 5 mm Allen key so that they are parallel with the rim and are positioned 1-2 mm away from the rim.
  • Page 66 ASSEMBLY...
  • Page 67 U-brakes installed on the front fork of a bicycle are generally slightly different than that pictured on the left in that they will not have a cable carrier, straddle cable or hook cable end.
  • Page 68 WARNING Do not ride the bicycle until the brakes are func- tioning properly. To test, apply the brakes while trying to push the bike forward to make sure they will stop the bicycle.
  • Page 69 3. Connect the upper cable to the upper plate by plate. Use a 10 mm wrench to tighten the locknut on passing the football ends of the upper cable through the left adjusting barrel loose. 4. Screw the lower cable adjusting barrel into (or out the threaded holes in the upper plate and connecting them to the bearing.
  • Page 70 1 mm (1/32 inch) WARNING Failure to adjust correctly may result in loss of braking power and personal injury. ASSEMBLY...
  • Page 71 PLEASE NOTE: Not all axles are able to accept axle pegs. Please consult your local bicycle specialist if you have any questions. Some BMX bicycles come with two or four pegs. NON-THREADED THREADED Make sure the axle nuts are tight with a 15 mm wrench This style of peg is threaded to fit the axle.
  • Page 72 Reflectors: If not already attached, attach the reflector mounts to the bicycle (see page 20). Mount the white reflector on the front bracket and the red reflector on the rear bracket by sliding the reflectors over the brackets (see diagram, page 19) and ensure that the tab clicks into the top hole of the bracket.
  • Page 73 HOW THINGS WORK It’s important to your performance, enjoyment and safety to understand how things work on your bicycle. Even if you’re an experienced bicyclist, don’t assume that the way things work on your new bike is the same as how they work on older bikes.
  • Page 74 REMOVING AND INSTALLING BOLT-ON WHEELS A. Removing a Bolt-On Front Wheel 1. Open up the brake shoes. 2. With a 15 mm box wrench or a six inch adjustable wrench, loosen the two axle nuts. 3. If your front fork has a clip-on type secondary retention device, disengage it and go to step 4. If your front fork has an integral secondary retention device, loosen the axle nuts about six full turns;...

  • Page 75: Seatpost Quick Release

    Therefore: 1. Ask your local bicycle specialist to help you make sure you know how to correctly clamp your seatpost. 2. Understand and apply the correct technique for clamping your seatpost quick release.
  • Page 76 Make sure that your hands can reach and squeeze the brake levers comfortably. The braking action of a bicycle is a function of the friction between the brake surfaces - usually the brake shoes and the wheel rim. To make sure that you have maximum friction available, keep your wheel rims and brake shoes clean and free of lubricants, waxes or polishes.
  • Page 77 The purpose of having multiple gears on a bicycle is to let you choose the gear that allows you to maintain your optimum cadence under the widest range of riding conditions.
  • Page 78 Whether upshifting or downshifting, the bicycle derailleur system design requires that the drive chain be moving forward and be under at least some tension. A derailleur will shift only if you are pedaling forward.
  • Page 79 3. Shifting the Rear Derailleur The rear derailleur is controlled by the right shifter. The function of the rear derailleur is to move the drive chain from one gear to another on the rear cluster, thereby changing gear drive ratios. The smaller sprockets on the gear cluster produce higher gear ratios.
  • Page 80 5. Shifting an Internal Gear Hub Drivetrain If your bicycle has an internal gear hub drivetrain, the gear changing mechanism will consist of: • a 3, 5, 7 or possibly 12 speed internal gear hub • one, or sometimes two shifters •...

  • Page 81: Tires And Tubes

    Bicycle tires are available in many designs and specifications, ranging from general purpose designs to tires designed to perform best under very specific weather or terrain conditions. Your bicycle has been equipped with tires which the bike’s manufacturer felt were the best balance of performance and value for the use for which the bike was intended.
  • Page 82 The tire valve allows air to enter the tire’s inner tube under pressure, but doesn’t let it back out unless you want it to. The tire valve on your bicycle is like the valve on a car tire. To inflate the tire/tube, remove the dust cap and push the air hose or pump fitting onto the end of the valve stem.

  • Page 83: Bicycle Suspension

    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 are sure you are competent to handle the full capabilities of your bike. Never ride at a speed or on terrain which is not suitable for your personal riding skill and experience.

  • Page 84: Schedule 1 - Lubrication

    • Ask your local bicycle repair shop about the availability of bicycle repair courses in your area. We recommend that you ask your local bicycle repair shop to check the quality of your work the first time you work on something and before you ride the bike after a service or home repair, just to make sure that you did everything correctly.
  • Page 85 “seat” when a new bike is first used and may require readjustment by your local bicycle repair shop. Your Pre Ride Safety Check (pages 16-17) will help you identify other things that need readjustment.
  • Page 86 Product life is often related to the kind of riding you do and to the treatment to which you submit the bicycle. The bicycle’s warranty is not meant to suggest that the bicycle cannot be broken or will last forever.
  • Page 87 • Wheels Not Straight: Lift each wheel off the ground and spin them to see if they are crooked or out of round. If wheels are not straight, they will need to be adjusted. This is quite difficult and is best left to a bicycle specialist.

  • Page 88: Tire Inspection

    RECOMMENDED TIRE PRESSURES: The recommended pressure molded on the sidewall of your bicycle tires should match the following chart. Use this as a general guide. 35 - 50 psi...

  • Page 89: Hub Bearing Adjustment

    2. To adjust, remove wheel from bicycle and loosen the locknut on one side of the hub while holding the bearing cone on the same side with the bicycle cone wrench or flat, thin open end wrench. 3. Rotate the adjusting cone as needed to eliminate free play.
  • Page 90 6. Match the position of the leak in the tube with the tire to locate the possible cause and mark the location on the tire. 7. Remove the tire completely and inspect for a nail, glass, etc. and remove if located. Also inspect the inside of the rim to ensure there are no protruding spokes, rust or other potential causes.

  • Page 91: Handlebars And Stem

    HANDLEBARS AND STEM Handlebar Stem The handlebar stem fits into the steering column and is held firm by the action of a binder bolt and expander wedge which, when tightened, binds with the inside of the fork steerer tube. When removing the stem, loosen the stem wedge bolt two or three turns, then give it a tap to loosen the wedge inside.
  • Page 92 Please note Note: Curved rake that if you need to replace the forks in your bicycle at any time, the of fork faces replacement forks must have the same rake and the same tube inner forward.
  • Page 93 GRIP SHIFTERS Grip Shift - Installation 1. Slide front Grip Shift assembly over left side of handlebar leaving proper clearance for handlebar grip. If necessary, move the brake lever to accommodate Grip Shift and handlebar grip. 2. Rotate assembly until cable exits beneath brake lever with adequate clearance for brake lever movement. 3.
  • Page 94 CABLES AND CABLE HOUSING Cables and housing are one of the most overlooked parts on the bicycle. The first indication that your cables and housing need to be replaced is an increased amount of pressure needed to operate the brakes or shifters.
  • Page 95 While standing over the frame top tube with both feet on the ground, apply the front brake firmly and rock the bicycle back and forth; if you detect any looseness in the headset, it will need adjustment. Check that the headset is not over tightened by slowly rotating the fork to the right and left.
  • Page 96 After any saddle adjustment, be sure to tighten the saddle adjusting mechanism properly before riding. A loose saddle clamp or seatpost binder can cause damage to the bicycle or can cause you to lose control and fall. Periodically check to make sure that the saddle adjusting mechanism is properly tightened.

  • Page 97: Saddle Adjustment

    The seatpost must be inserted so that the Minimum Insertion Mark cannot be seen. The quick release mechanism must be tightened securely to prevent a sudden shift of the seat when riding. Failure to do this may cause loss of bicycle control. DETAILED MAINTENANCE...
  • Page 98 The inability to stop can cause lose of control, serious injury or death. There are three types of hand operated bicycle brakes in common use: sidepull brakes, cantilever brakes, and V-brakes (or Direct Pull brakes). All brakes utilize a handlebar mounted lever which controls a cable to operate the brakes.
  • Page 99 CAUTION The brake cable adjusting barrels are for minor adjustments only. For major adjustments see the appropriate section in the manual for the type of brakes on your bicycle. When making adjustments with the cable adjusting barrel WARNING attached to the brake lever, it is recommended that the Ensure the brake fixing nut is secured tightly.
  • Page 100 For major adjustments see the appropriate section in the manual for the type of brakes on your bicycle. When making adjustments with the cable adjusting barrel attached to the brake levers, it is recommended that the corresponding slots in the brake lever, cable adjusting barrel and locknut not be aligned.
  • Page 101 Adjust the brake pad position so that it is parallel to the wheel rim and so that the leading edge makes first contact. To do this, fit an Allen key into the brake pad holding bolt, loosen the fixing nut and adjust. Move the brake pad along its mounting post to alter the distance from the rim, and move the curved adjustment washer to alter the angle of the pad.
  • Page 102 DRIVETRAIN The drivetrain of a bicycle refers to all parts that transmit power to the rear wheel including the pedals, chain, chainwheel, crank set, and freewheel. PEDALS Pedals are available in a variety of shapes, sizes and materials, and each are designed with a particular purpose in mind. Some pedals can be fitted with toe clips and straps.

  • Page 103: Lubrication And Adjustment

    (i.e. the reverse of when fitting). If replacing the original pedals with a new set, make sure the size and the axle thread is compatible with the cranks on your bicycle. Bicycles use one of two types of cranks and these use different axle threads. Your bike may be equipped with cranks that are a one piece design with no separate axle.

  • Page 104: Crank Set

    CRANK SET The crank set refers to the bottom bracket axle and bearings, the crank arms, and chainrings. Your bike may be fitted with either a one piece crank, where the crank arms and bottom bracket are a single component, or cotterless cranks, where the crank arms bolt onto the bottom bracket axle without using old fashioned type cotterpins.
  • Page 105 LUBRICATION AND ADJUSTMENT - ONE PIECE CRANKS To adjust the free play in a one piece type bottom bracket, loosen the locknut on the left side by turning it clockwise and tighten the adjusting cone counterclockwise using a screwdriver in the slot. When correctly adjusted, retighten the locknut counterclockwise.
  • Page 106 LUBRICATION AND ADJUSTMENT Cotterless Cranks To adjust the free play in a three piece type bottom bracket, loosen the lockring on the left side by turning it counterclockwise, then turn the adjusting cup as required. Retighten the lockring taking care not to alter the cup alignment.
  • Page 107 Cotterless Crank Replacement 1. Replace the crank arm onto the axle. 2. Tap the crank arm lightly with a mallet. 3. Refit the washer and tighten flange nut or bolt securely to a torque of 27Nm. 4. Replace the dust cover. Adjustment After Use 1.
  • Page 108 Binder (Boltless) Crank Replacement/Removal Generally lubrication and maintenance repairs of this boltless three piece crank set should be done by your local bike shop. However, the crank arms require regular checking and possible replacement. 1. Use a 6 mm Allen wrench to loosen or tighten the cap screw in the binder end (2) and the end screw (1).
  • Page 109 CHAIN Inspection The chain must be kept clean, rust free and frequently lubricated in order to extend its life as long as possible. It will require replacement if it stretches, breaks, or causes inefficient gear shifting. Make sure that there are no stiff links, they must all move freely.
  • Page 110 To install, feed chain around chainwheel, rear sprocket (and through front and rear derailleurs on multi-speed bikes) with protruding rivet facing away from the bicycle. Bring the two ends together within the special tool and punch the rivet into place. Be sure not to push rivet too far through side plate.

  • Page 111: Coaster Hub

    Lubrication Remove any accumulated dirt from the freewheel with a brush and a degreaser. Disassembly of the freewheel is a complicated procedure requiring special tools, and should be left to a specialist. Apply oil to the freewheel whenever you lubricate the chain, taking care to wipe off any excess.

  • Page 112: Derailleur Systems

    There are several different types of derailleur systems but all operate using similar principles. Your new bicycle may be fitted with a standard “friction” type system where you will need to feel each gear shift into position. It may be fitted with an “index” system (e.g.
  • Page 113 Adjustment - Front Derailleur 1. Shift the rear shifter to the smallest number indicated, then shift the front shifter to the smallest number indicated. Disconnect the front derailleur cable from the cable anchor bolt and place the chain on the smallest chainwheel.
  • Page 114 Adjustment - Rear Derailleur The Low limit screw determines how far the rear derailleur will travel toward the wheel of the bicycle, while the High limit screw determines how far the cage will travel toward the frame. 1. Shift the rear shifter to the largest number indicated, disconnect the rear derailleur cable from the cable anchor bolt and place the chain on the smallest sprocket.
  • Page 115 REFLECTORS Your bicycle is supplied with one front (white), one rear (red), two wheel (white), and two pedal (orange) reflectors. These are an important safety and legal requirement, and should remain securely fitted and in good, clean conditions at all times. Periodically, inspect all reflectors, brackets and mounting hardware for signs of wear or damage.
  • Page 116 - Replace chain. - Chain worn/stretched. - Lubricate or replace link. - Stiff link in chain. - Seek advice at a bicycle shop. - Non-compatible chain or chainring or freewheel. Chain jumping off freewheel - Chainring out of true.
  • Page 117 PROBLEM POSSIBLE CAUSE REMEDY Freewheel does not rotate. - Freewheel internal pawl pins are - Lubricate, if problem persists, jammed. replace freewheel. Brakes not working effectively. - Brake blocks worn down. - Replace brake blocks. - Brake blocks/rim greasy,wet or - Clean blocks and rim.
  • Page 118 PROBLEM POSSIBLE CAUSE REMEDY Steering not accurate. - Wheels not aligned in frame. - Align wheels correctly. - Headset loose or binding. - Adjust/tighten handset. - Front forks or frame bent. - Take bike to a bike shop for - Stem wedge bolt not tight. possible frame realignment.
  • Page 119 LIMITED WARRANTY Production Limitations Problems of rider error aside, advanced or extreme riding also beats the heck out of your equip- ment and the bicycles covered by this manual are not intended for such advanced or extreme uses. Although your new Dynacraft bike is built tough, there’s no way we can guarantee your new bike will survive your umpteenth drop because there is no industry “jumping”...
  • Page 120 Lifetime for the Bicycle Frame and Fork, Two Years On All Other Component Parts. No other express or implied warranty is given. Dynacraft will replace without charge the bicycle frame, fork or those component parts that are determined by Dynacraft to be defective in materials or manufacture under normal use and service during the applicable warranty period.
  • Page 121 This does not mean we assume any responsibility for any injuries you might sustain while using your bike.
  • Page 122 Dynacraft’s bicycles are intended for the average rider to use on streets, roads and bicycle approved off road trails, and 20 inch BMX and Free Style bicycles are for non bicycle approved off road trails, and 20 inch BMX and Free Style bicycles are for non...
  • Page 123 Dynacraft BSC, Inc. 89 South Kelly Road American Canyon, CA 94503 Cut along dotted line before mailing...
  • Page 124 Thank you for purchasing your bicycle. Please take a moment to fill out this registration card, and mail it back to us. We value your business and appreciate your feedback. Model Number/Description: Serial Number: Name: Address: City/State: Zip: Date of Purchase: User’s Date of Birth:...
  • Page 125 M075...

This manual is also suitable for:

Mountain bicyclesDual suspension mountain bicyclesBmx bicyclesRoad bicycles

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