Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your DAWAY C99 Comfy Wide Bike Seat with integrated tail light and the DAWAY A35 Bike Repair Kits. Please read these instructions carefully before use to ensure proper function and safety.
Package Contents
The DAWAY C99 Comfy Wide Bike Seat and DAWAY A35 Bike Repair Kits package includes the following items:
- DAWAY C99 Comfy Wide Bike Seat with integrated tail light
- Mounting Tools (wrench, hex key)
- Saddle Adapter
- Water & dust resistant cover
- CR2032 Battery (pre-installed in tail light, with insulating sheet)
- 16-in-1 Multifunction Bike Tool
- 120 Psi Mini Bike Pump
- Portable Bike Frame Bag
- 10-in-1 Dog Bone Hexagon Wrench
- 3 pcs Bike Tire Levers
- 8 pcs Bike Tire Patches
- Metal Rasp

Image: Overview of the DAWAY C99 bike seat and included accessories like mounting tools, saddle adapter, and cover.
Setup and Installation
DAWAY C99 Bike Seat Installation
- Remove Old Saddle: Use appropriate tools to remove your existing bike saddle from the seat post.
- Attach Saddle Adapter: If your bike seat post requires it, attach the provided saddle adapter to the seat post. The DAWAY C99 saddle has a standard rail mount system.
- Mount New Saddle: Place the DAWAY C99 bike seat onto the seat post or saddle adapter rails.
- Adjust Position: Adjust the saddle's forward/backward position and tilt for optimal comfort.
- Tighten Fasteners: Securely tighten all bolts and nuts using the provided mounting tools (wrench and hex key). Ensure the saddle is firmly in place and does not wobble.

Image: The DAWAY C99 bike seat, showing its dimensions (10.6 inches long, 8.7 inches wide) and illustrating a relaxed riding posture at a 90-degree spine angle.

Image: Top view of the DAWAY C99 bike seat, highlighting the ventilation channel design for improved airflow and pressure reduction.
DAWAY C99 Bike Seat Tail Light Setup
- Remove Insulating Sheet: Before first use, locate the battery compartment on the underside of the tail light. Gently pull out the insulating sheet to activate the CR2032 battery.
- Check Battery Installation: Ensure the CR2032 battery is correctly installed.

Image: Underside view of the DAWAY C99 bike seat, detailing the integrated tail light with 5 bright LEDs, 3 lighting modes, the CR2032 battery slot, and the tail light switch.
DAWAY A35 Bike Repair Kits Setup
The bike repair kit components are ready for use. The portable bike frame bag can be attached to your bike frame using its straps for easy transport.

Image: The DAWAY A35 bike frame bag securely attached to a bicycle frame, demonstrating its compact and accessible design.
Operating Instructions
DAWAY C99 Bike Seat Tail Light Operation
- Power On/Off: Press the tail light switch (located on the underside of the light) to turn the light on or off.
- Change Modes: Press the switch repeatedly to cycle through the 3 available lighting modes (e.g., steady, slow flash, fast flash).
DAWAY A35 Bike Repair Kits Usage
Mini Bike Pump (120 Psi)
- Identify Valve Type: Determine if your tire uses a Presta valve or a Schrader valve.
- Adjust Pump Head: The pump head can be adjusted for Presta or Schrader valves. Turn the internal components as indicated on the pump to match your valve type. The default setting is typically Schrader.
- Attach Pump: Securely attach the pump head to the tire valve.
- Inflate Tire: Pump until the desired tire pressure is reached (up to 120 Psi).
- Remove Pump: Detach the pump head from the valve.
Note: A ball needle valve is included for inflating sports balls.

Image: The DAWAY A35 mini bike pump, illustrating its compact size and instructions for switching between Presta and Schrader valve compatibility.
16-in-1 Multifunction Bike Tool
This tool combines various wrenches, screwdrivers, and hex keys for common bike adjustments and repairs. Fold out the required tool for the task at hand. Refer to the tool's markings for specific sizes (e.g., 8mm/10mm/15mm/14GE flat wrench, 2/2.5/3/4/5/6 mm inner hex key wrench, Phillips screwdriver, slotted screwdriver, 8/9/10mm socket hex wrench).

Image: The DAWAY A35 16-in-1 multifunction bike tool, displaying its various components including wrenches, screwdrivers, and hex keys.
Tire Patch Repair Kit
- Locate Puncture: Use tire levers to carefully remove the bike inner tube. Inflate the tube slightly to find the leak.
- Prepare Surface: Use the metal rasp to roughen the area around the puncture. Ensure the roughened area is larger than the patch.
- Apply Patch: Take a glueless tire patch, peel off its backing, and firmly press it onto the prepared area for about one minute.
- Verify Seal: Wait 30 seconds to confirm the patch is firmly attached.
- Reinstall Tube: Carefully reinstall the inner tube into the tire and remount the tire on the wheel.
- Inflate and Test: Inflate the tire to the recommended pressure and check for any remaining leaks.

Image: Step-by-step visual guide for using the DAWAY A35 glueless tire patches, demonstrating how to locate a puncture, prepare the surface, apply the patch, and reinstall the inner tube.
Maintenance
- Bike Seat:
- Regularly check the saddle mounting bolts for tightness.
- Clean the seat surface with a damp cloth. Use the provided water & dust resistant cover when the bike is stored outdoors or in wet conditions.
- Periodically check the tail light for proper function.
- Tail Light Battery Replacement:
- If the tail light dims or stops working, replace the CR2032 battery. Open the battery compartment, remove the old battery, and insert a new CR2032 battery with the correct polarity.
- Bike Repair Kits:
- Keep all tools clean and dry to prevent rust.
- Store the tire patches in their original packaging in a cool, dry place.
- Ensure the bike pump is free of debris.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Bike seat feels unstable or wobbly. | Mounting bolts are loose. | Tighten all saddle mounting bolts securely using the provided tools. |
| Tail light not working. | Insulating sheet not removed, battery drained, or incorrect battery installation. | Remove insulating sheet. Replace CR2032 battery. Ensure correct polarity. |
| Bike pump not inflating tire. | Pump head not properly attached, or incorrect valve setting. | Ensure pump head is securely attached to the valve. Adjust pump head for correct valve type (Presta/Schrader). |
| Tire patch not holding air. | Surface not properly prepared, patch not pressed firmly, or patch too small. | Roughen the area thoroughly with the rasp. Ensure the roughened area is larger than the patch. Press the patch firmly for at least one minute. |
Specifications
- DAWAY C99 Bike Seat:
- Material: Memory Foam (Padding), Foam (Outer Material)
- Color: Black
- Dimensions: Approximately 10.6 inches (length) x 8.7 inches (width)
- Tail Light: Integrated, 5 bright LEDs, 3 lighting modes
- Battery: CR2032 (for tail light)
- Mounting: Standard rail mount system with saddle clamp
- Compatibility: Most bikes including city bikes, mountain bikes, hybrid bikes, stationary bikes.
- DAWAY A35 Bike Repair Kits:
- Mini Bike Pump: 120 Psi maximum pressure, Presta/Schrader valve compatible, includes ball needle valve.
- Multifunction Tool: 16-in-1 (various hex keys, wrenches, screwdrivers).
- Tire Patches: Glueless type, 8 pieces.
- Tire Levers: 3 pieces.
- Other: Portable bike frame bag, metal rasp, 10-in-1 dog bone hexagon wrench.
Warranty and Support
Warranty Information:
- DAWAY C99 Bike Seat: 1-year warranty against manufacturing defects and comfort issues.
- DAWAY A35 Bike Repair Kits: 6-month warranty against quality problems.
For warranty claims or any product-related inquiries, please contact DAWAY customer service through your purchase platform or the official DAWAY website. Please provide your purchase details and a description of the issue for prompt assistance.