Dynacraft SINGLE SPEED Owner's Manual
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Dynacraft SINGLE SPEED Owner's Manual

Dynacraft SINGLE SPEED Owner's Manual

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OWNER'S MANUAL
FOR SINGLE SPEED AND MULTI-SPEED BICYCLES
This manual contains important safety, performance and maintenance
information. Read the manual before taking your first ride on your new
bicycle, and keep the manual handy for future reference.
REGISTER YOUR RIDE
online at www.dynacraftbike.com

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Summary of Contents for Dynacraft SINGLE SPEED

  • Page 1 OWNER’S MANUAL FOR SINGLE SPEED AND MULTI-SPEED BICYCLES This manual contains important safety, performance and maintenance information. Read the manual before taking your first ride on your new bicycle, and keep the manual handy for future reference. REGISTER YOUR RIDE...
  • Page 2 HELMETS SAVE 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

    Dynacraft shall not have any responsibility for any breakdown of the bicycle, its components or rider injuries...
  • 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. DYNACRAFT CUSTOMER SERVICE 1.800.551.0032 7AM to 4PM PACIFIC TIME Dynacraft BSC, Inc.
  • Page 7 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

    Reflectors Grip Shift Installation Rear Rack Assembly Lubrication Cables and Cable Final Check GEARS - HOW TO Adjustment (rear) Housing OPERATE SINGLE SPEED & BMX Reflectors HEADSET Derailleur Gears Frontwheel TROUBLESHOOTING Operating Principles Inspection Handlebars REGISTRATION CARD Hand Grip Shifters...

  • Page 9: Tools

    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: Parts List/ 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 Bicycles

    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 Head Tube Handlebar 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 Brake Control Cable Seat Head Tube 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 Front Reflector Top Tube Brake Lever...

  • Page 14: Before You Ride

    STANDOVER HEIGHT FRAME WEIGHT LIMIT 1. Diamond Frame Bicycles There is no American standard for testing the Standover height is the basic element of bike fit (see structural weight limits of bicycle frames and for figure). 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...

  • Page 15: Correct Frame Size

    CORRECT FRAME SIZE When selecting a new bicycle, the correct choice of frame size is a very important safety consideration. CAUTION WARNING For safe and comfortable riding there should If the bicycle is too large the rider cannot reach be a clearance of no less than 1 inch between the pedals easily, or the ground when stopping the inseam area of the intended rider and the which may result in loss of control and/or injury.

  • Page 16: Rules Of The Road

    RIDERS. This is dangerous and makes the bike harder ABILITY TO STOP YOUR BICYCLE IS CRITICAL. to control. The bicycles distributed by Dynacraft BSC, Roads are slippery when wet so avoid sharp turns and Inc. are intended for one rider only.
  • 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: Off Road/Rider Safety

    Dynacraft bicycles are not designed for these types of extreme riding. WARNING...

  • Page 19: Wet Weather Riding

    Under wet conditions, the stopping power of your brakes (as well as the brakes of other vehicles sharing the road) is dramatically reduced and your tires don’t grip nearly as well. This makes it harder to control speed and easier to lose control. Dynacraft does not recommend that you ride under these conditions. WARNING Wet weather impairs traction, braking and visibility, both for the bicyclist and for other vehicles sharing the road.

  • 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

    RIDING POSITION Saddle Height In order to obtain the most comfortable riding position and offer the best possible pedaling efficiency, the seat height should be set correctly in relation to the rider’s leg length. The correct saddle height should not allow leg strain from over-extension, and the hips should not rock from side to side when pedaling.

  • Page 23: Handlebar Height

    HANDLEBAR HEIGHT Maximum comfort is usually obtained when the handlebar height is equal to the height of the seat. 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.

  • Page 24: Safety Checklist

    SAFETY CHECKLIST Before every ride, it is important to carry out the following safety checks: (For information and instructions on performing specific equipment checks, locate the relevant section in the manual using the index on page vii). 1. Brakes • Ensure front and rear brakes work properly. •...

  • Page 25: Chain

    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: Helmets

    HELMETS Local laws of most places require a helmet, and common sense requires them in other places where it is not the law. It is strongly advised that a properly fitting, CSPC approved, bicycle safety helmet be worn at all times when riding your bicycle. In addition, if you are carrying a passenger in a child safety seat, they must also be wearing a properly fitted helmet.
  • Page 27 Please refer to the following section for instructions on all types of bicycle reflectors. NOTE: CPSC Regulations do not require reflectors on 10”, 12” and 16” Sidewalk Bicycles - We recommend, however, that you attach reflec- tors for the protection of the rider. These types of bicycles should be operated during daylight hours only, on a smooth, paved surface such as a sidewalk, under the direct supervision of an adult.
  • 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: Gears - How To Operate

    GEARS - HOW TO OPERATE DRIVE TRAIN Derailleur Control Cable Front Derailleur Derailleur Gears Freewheel Cogs Most multi-speed bicycles today are equipped with what are known as derailleur gears. They operate using a system of levers and mechanisms to move the drive chain between different sized driving gears or cogs.

  • Page 30: Hand Grip Shifters

    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

    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

    BICYCLE CARE Basic Maintenance The following procedures will help you maintain your bicycle for years of enjoyable riding. • Before you ride, check the alignment of the front wheel. If it is in alignment, you should see it if when lifting the front of the bike and spinning the wheel, the gaps between the front brake pads are consistently the same.

  • Page 33: Storage

    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: Assembly

    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. Getting Started Open the carton from the top and remove the bicycle.

  • Page 35: Handlebars

    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 You can adjust the handlebar height a bit by adjusting FIGURE Y stem height. A quill stem has an etched or stamped Stem Binder Bolt mark on its shaft which designates the stem’s “Minimum Insertion” or “Maximum Extension”. This mark must not Handlebar Top Cap Spacer...
  • Page 37 ROTATION OF SHIFTERS, BRAKE FIGURE 1 LEVERS AND BAR ENDS Tighten all bolts that clamp the shifter, brake Shifter binder bolt levers, and bar ends to the handlebar using a (2.5 Allen key) 5 mm Allen key or Phillips head screwdriver. (figure 1) Handlebar with grip shifter.

  • Page 38: Forks

    FORKS FIGURE 1 There are two different types of forks that range in styles and dimensions. One type is a rigid fork (figure 1) consisting of stationary Steering Tube tubing with curved blades. The other type is a suspension fork Brake Boss (figure 2) consisting of stanchion tubes riding on elastomers or springs inside of a straight fork leg.

  • Page 39: Seat And Seatpost

    SEAT AND SEATPOST Attach the seat to the seatpost by loosening the nuts on the seat clamp. Insert the tapered end of the seatpost into the seat clamp until it is at the top of the clamp. Partially tighten the nuts on the seat clamp turning each side evenly until the seat is snug, but Seat can still be turned.

  • Page 40: Max./Min. Insertion Mark

    SEATPOST MAXIMUM AND MINIMUM INSERTION MARK CORRECT MAXIMUM INSERTION INCORRECT MAXIMUM INSERTION Do not insert below Maximum Insertion Mark - insertion below Maximum Insertion Reflector visibility is blocked Mark will block rear reflector visibility. by rear fender when seatpost is inserted incorrectly. Use reflector bracket Minimum Insertion Mark to confirm rear reflector visibility Maximum Seatpost...
  • 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: Pedals And Crank Set

    PEDALS AND CRANK SET Check for the right (R, red) sticker and left (L, green) sticker on each pedal and crank arm. Match the appropriate pedal to each crank (right to right and left to left) for assembly. Start each pedal spindle by hand to avoid stripping the threads.

  • Page 43: Brakes

    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

    CHECK YOUR BRAKES Press each brake lever to make sure that there is no binding and that the brake pads press hard enough on the rims to stop the bike. The brake pads should be adjusted so they are 1 mm to 2 mm away from the rim when the brakes are not applied.

  • Page 49: Disk Brakes

    DISK BRAKES Some models of bicycles may be equipped with disk brakes. The set up and maintenance of disk brakes vary by model and manufacturer, please read the instructions supplied with your bicycle for the specific instructions and warnings for the disk brakes supplied on your bicycle before adjusting your brakes or riding your bicycle. Disk brakes require breaking in before full breaking power is achieved.

  • Page 50: 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

    FRONT DERAILLEUR Shift both shifter to the smallest number indicated and place the chain on the corresponding cog and chainwheel. Disconnect the front derailleur cable from the cable anchor bolt. Check the position of the front derailleur; it should be parallel with the outer chainwheel and clear the largest chainwheel by 3 - 5 mm when fully engaged.

  • Page 52: Dual Suspension

    DUAL SUSPENSION Dual suspension bikes are equipped with a front fork as well as a rear suspension generally located below the seat. The rear suspension unit is a combination of a piston that works in conjunction with a spring to allow the rear swing arm to rotate on a pivot point.

  • 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: Accessories

    ACCESSORIES Your bike may come with some or all of these accessories that require attachment and/or assembly. 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

    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

    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

    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: Single Speed & Bmx

    SINGLE SPEED AND BMX 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.

  • Page 61: Handlebars

    HANDLEBARS FIGURE X 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 62: Seat

    SEAT Loosen nut on the seat clamp and add 3 or 4 drops of oil onto the threads of the bolt. Place the smaller end of the seatpost into the seat clamp until it stops with the bolt to the rear of the seatpost. Thread the nut on the seat clamp loosely.

  • Page 63: Pedals And Crank Set

    PEDALS AND CRANK SET Check for the right (R, red) sticker and left (L, green) sticker on each pedal and crank arm. Match the appropriate pedal to each crank (right to right and left to left) for assembly. Start each pedal spindle by hand to avoid stripping the threads.

  • 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 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-Brake

    U-BRAKE INSTRUCTIONS Adjust the pads of the U-brake using a 10 mm wrench. Make sure the pad is hitting the rim and not the tire. Ideally the front of the pad should hit the rim approximately 1 mm before the rear pad. Next, tighten the Cable Carrier to the brake cable approximately 20 mm from the brake arms when they are closed against the rim.

  • Page 68: Check Your Brakes

    CHECK YOUR BRAKES TRAINING WHEEL Press each brake lever to make sure that there is no binding and that the brake pads are hard enough on the rims to stop the bike. The brake pads should be adjusted so they are 1 mm - 2 mm away from the rim when the brakes are not applied.
  • 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. the threaded holes in the upper plate and connecting 4.
  • 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: Final Check

    FINAL CHECK Install any additional parts that are supplied with your bike. NOTE: Your bicycle may be equipped with different style components than the ones illustrated. 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...

  • Page 73: How Things Work

    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

    SEATPOST QUICK RELEASE Many bikes are equipped with quick-release seatpost binders. While a quick release looks like a long bolt with a lever on one end and a nut on the other, in fact the quick release uses a cam action to firmly clamp the seatpost. WARNING Riding with an improperly tightened seatpost can allow the saddle to turn or move and cause you to lose control and fall.

  • Page 76: Brakes

    BRAKES NOTE: For most effective braking, use both brakes and apply them simultaneously. 1. How Brakes Work It’s important to your safety that you instinctively know which brake lever controls which brake on your bike. In the U.S., bikes are required to be set up with the right brake lever controlling the rear brake, and then left lever controlling the front brake.

  • Page 77: Shifting

    When you apply one or both brakes, the bike begins to slow, but your body wants to continue at the speed at which it was going. This causes a transfer of weight to the front wheel (or, under heavy braking, around the front wheel hub, which could send you flying over the handlebars).
  • Page 78 2. Shifting a Derailleur Drivetrain If your bicycle has a derailleur drivetrain, the gear-changing mechanism will consist of: • a rear sprocket cluster, called a freewheel or freewheel cassette • a rear derailleur • usually a front derailleur • one or two shifters •...
  • 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

    TIRES AND TUBES Tires 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 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. Inflating 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.

  • Page 83: Bicycle Suspension

    BICYCLE SUSPENSION Some Mountain Bikes come equipped with suspension systems which are designed to smooth out some of the shocks encountered in riding. Suspension can increase the handling capabilities and comfort of your bicycle. 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.

  • Page 84: Servicing

    If you want to learn to do major service and repair work on your bike: • Ask your local bicycle repair shop to recommend a book on bicycle repair. • 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 The following are examples of the type of service you should perform yourself. All other service, maintenance and repair should be performed in a properly equipped facility by a qualified bicycle mechanic using the correct tools and procedures specified by the manufacturer. 1.

  • Page 86: Schedule 2 - Service Checklist

    SCHEDULE 2 - SERVICE CHECKLIST Frequency Component Lubricant How to Lubricate Weekly Chain Chain Lube or Light Oil Brush on or Squirt Derailleur Wheels Chain Lube or Light Oil Brush on or Squirt Derailleurs Oil Can Brake Calipers 3 Drops from Oil Can Brake Levers 2 Drops from Oil Can Monthly...

  • Page 87: Detailed Maintenance

    WHEELS AND TIRES Wheel Inspection It is most important that the wheels are kept in top condition. Properly maintaining your bicycle’s wheels will help braking performance and stability when riding. Be aware of the following potential problems: • Dirty or Greasy Rims: CAUTION: These can render your brakes ineffective.

  • Page 88: Tire Inspection

    TIRE INSPECTION Tires must be maintained properly to ensure road holding and stability. Check the following areas: Inflation: Ensure tires are inflated to the pressure indicated on the tire sidewalls. It is better to use a tire gauge and a hand pump than a service station pump. CAUTION: If inflating tires with a service station pump, take care that sudden over inflation does not cause tire to blow out.

  • Page 89: Hub Bearing Adjustment

    HUB BEARING ADJUSTMENT When checked, the hub bearings of either wheel will require adjustment if there is any more than slight side play. 1. Check to make sure neither locknut is loose. 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.
  • 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: Handlebar 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: Handlebars

    When refitting the stem, make sure the handlebars are correctly aligned and tightened using the appropriate hex wrench or Allen key. Do not over tighten. Test the security of the handlebar within the stem, and the stem within the fork steerer tube, by clamping the front wheel between your knees and trying to move the handlebar up and down, and from side to side.

  • Page 93: Grip Shift Installation

    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 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. Before every ride, check that there are no kinks or frays in the cables and housing.

  • Page 95: Headset Inspection

    HEADSET Inspection The headset bearing adjustment should be checked every month. This is important as it is the headset which locks the fork into the frame, and if loose, can cause damage or result in an accident. 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;...

  • Page 96: Saddle And Seatpost

    SADDLE AND SEATPOST Inspection The seat fixing bolt and the seatpost binder bolt should be checked for tightness and adjustment every month. On removing the seatpost from the frame, you will notice a mark about 65 mm up from the bottom with the words “Max.

  • Page 97: Saddle Adjustment

    SADDLE ADJUSTMENT The seat can be adjusted in height, angle and distance from the handlebars to suit the individual rider. Saddle angle is a matter of personal preference but the most comfortable position will usually be found when the top of the seat is almost parallel to the ground, or slightly raised at the front.
  • Page 98 BRAKES The correct adjustment and operation of your bicycle’s brakes is extremely important for safe operation. Brakes should be checked for effective operation before every ride. Frequent checking of adjustment is necessary as the control cables will stretch and the brake pads will become worn with use.

  • Page 99: Adjustment Sidepull Calipers

    LUBRICATION The brake lever and brake caliper pivot points should be oiled with 2 - 3 drops of light oil at least every three months Locknut to ensure smooth operation and to reduce wear. Cables should be greased along their entire length, after removing them from their casings, at least every six months.

  • Page 100: Adjustment Cantilever Calipers

    Brake pads should finally be adjusted so that the leading edge of the pad makes first contact with the rim. Some brakes have special curved washers to allow this, but on less complex models it will be necessary to apply a little force to the pad and its mounting.
  • 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

    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

    LUBRICATION AND ADJUSTMENT Many pedals cannot be disassembled to allow access to the internal bearings and axle. However, it is usually possible to inject a little oil onto the inside bearings, and this should be done every six months. If the pedal is the type that can be fully disassembled, then the bearings should be removed, cleaned and greased every six to twelve months.

  • Page 104: Crankset

    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: Adjustment

    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 Crank Replacement/Removal

    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

    Adjustment and Replacement On derailleur geared bicycles the rear derailleur automatically tensions the chain. To adjust the chain on single speed freewheel, coaster hub braked or 3-speed hub geared bicycles: 1. Loosen the rear axle nuts (and coaster brake arm clip if fitted) and move the wheel forward to loosen, or backward to tighten in the frame.
  • Page 110 Chains require a special tool to fit and remove chain links, or to change the length. To remove, fit the rivet tool so that the punch pin is centered over any one of the chain rivets. Push the rivet almost all the way out, then back out the punch and remove the tool.

  • Page 111: Lubrication

    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

    DERAILLEUR SYSTEMS The derailleur system includes the front and rear derailleurs, the shift levers, and the derailleur control cables, all of which must function correctly for smooth gear shifting to occur. There are several different types of derailleur systems but all operate using similar principles. Your new bicycle may be fitted with a standard “friction”...

  • Page 113: Adjustment (Front)

    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: Lubrication

    Lubrication All the pivoting points of the front and rear derailleurs should be lubricated with light oil at least every month. Be sure to wipe off any excess oil to prevent attraction of dirt into the mechanisms. The shifting cables should be cleaned and recoated with a thin layer of grease every six months, or whenever new cables are being installed.

  • Page 115: Reflectors

    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: Troubleshooting

    PROBLEM POSSIBLE CAUSE REMEDY Gear Shifts not working properly. - Derailleur cables sticking or - Lubricate, tighten, or replace stretched or damaged. cables. - Front or rear derailleur not - Adjust derailleurs. adjusted properly. - Adjust indexing. - Indexed shifting not adjusted properly.
  • 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: Warranty

    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” standard, the many circum- stances of takeoff, landing, speed, rider technique, and these extreme uses neither could be nor were they taken into account during the manufacturing of these bicycles.
  • 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 BEWARE THERE ARE LIMITATIONS ON WHAT WE WARRANTY: This limited warranty does not apply to normal wear and tear, nor to claimed defects, malfunctions, or failures that result from abuse, neglect, improper assembly, improper maintenance, alteration, collision, crash, misuse, or any damaged caused while in an organized competition or commercial activity.
  • Page 122 All riders will assume their own risk of injury while biking, and Dynacraft will not be responsible unless the accident their own risk of injury while biking, and Dynacraft will not be responsible unless the accident and injury arises out of Dynacraft’s sole negligence and such negligence must be...
  • 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: Date of Birth of Person’s Whose Name Appears Above: Place of Purchase:...

  • Page 125: For More Information

    Please visit dynacraftbike.com for more information. Or call Customer Service at 1-800-551-0032, 7am-4pm Pacific Time. Please have the following information available when you call: Model Number: (example: 8XXX-XX) Production Date: (example: 2014.XX.XX) Serial Number: (example: XXXXXXXXXXX) 2015 Printed in China...

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