DEWALT DCCS677Z1
DEWALT FLEXVOLT 60V MAX 20 in. Brushless Electric Cordless Chainsaw
Model: DCCS677Z1
Introduction
This manual provides essential information for the safe operation, assembly, maintenance, and troubleshooting of your DEWALT FLEXVOLT 60V MAX 20 in. Brushless Electric Cordless Chainsaw, Model DCCS677Z1. Please read and understand all instructions before using the chainsaw.

Image: The DEWALT FLEXVOLT 60V MAX 20 inch Brushless Electric Cordless Chainsaw, showing the motor housing and the 20-inch bar and chain.
Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using power tools. Keep this manual for future reference.
- Read the Manual: Familiarize yourself with all controls and proper use.
- Wear Personal Protective Equipment (PPE): Always wear safety glasses, hearing protection, gloves, and sturdy footwear. A hard hat and leg protection (chaps) are also recommended.
- Maintain a Safe Work Area: Keep the area clear of bystanders, children, and pets. Ensure good footing and balance.
- Inspect Before Use: Check the chainsaw for damaged parts, loose fasteners, and proper chain tension before each use.
- Proper Grip: Always hold the chainsaw firmly with both hands, with your thumbs and fingers encircling the handles.
- Avoid Kickback: Be aware of the chain's rotation direction and avoid contact with the guide bar tip.
- Battery Safety: Use only specified battery packs and chargers. Do not expose batteries to water or extreme temperatures.
- Transport Safely: Always engage the chain brake and remove the battery pack before transporting the chainsaw.
Package Contents
Verify that all items are present upon unpacking:
- DEWALT FLEXVOLT 60V MAX 20 in. Brushless Electric Cordless Chainsaw (DCCS677Z1)
- 20-inch Guide Bar
- Saw Chain
- (1) FLEXVOLT 5 Ah Battery (DCB615 or equivalent)
- Battery Charger
- Carry Case
- Bar and Chain Oil (initial small quantity)
- Instruction Manual
Assembly
Follow these steps to assemble the guide bar and chain:
- Ensure the battery is removed from the chainsaw.
- Place the chainsaw on a flat, stable surface.
- Remove the chain cover by loosening the two nuts.
- Carefully place the chain around the sprocket and guide bar, ensuring the cutting edges face the correct direction (refer to chain markings).
- Align the guide bar over the studs and ensure the chain fits into the groove of the guide bar.
- Replace the chain cover and hand-tighten the nuts. Do not fully tighten yet.
- Adjust chain tension using the tensioning screw. The chain should be snug but still able to be pulled freely around the bar by hand.
- Once tension is correct, fully tighten the chain cover nuts.

Image: A DEWALT chainsaw with the guide bar and chain properly installed, ready for use.
Setup
Battery Installation and Charging
- Insert the FLEXVOLT 5 Ah battery into the charger.
- Plug the charger into a standard electrical outlet. The indicator light on the charger will show the charging status.
- Once fully charged, remove the battery from the charger.
- Align the battery with the battery port on the chainsaw and slide it in until it clicks securely into place.
- To remove, press the battery release button and slide the battery out.
Video: An overview of the DEWALT 60V FLEXVOLT 20" Brushless Chainsaw, demonstrating key features and potentially battery installation.
Adding Chain Oil
- Ensure the battery is removed.
- Locate the oil reservoir cap on the chainsaw.
- Unscrew the cap and fill the reservoir with high-quality bar and chain oil. Do not use waste oil or motor oil.
- Replace the cap securely.
- Periodically check the oil level during operation and refill as needed. The chainsaw features auto-oiling for continuous lubrication.

Image: Close-up of the DEWALT chainsaw showing the oil reservoir cap, indicating where to add bar and chain oil.
Operating Instructions
Before starting, ensure you have read and understood all safety instructions.
- Starting the Chainsaw:
- Ensure the chain brake is disengaged (pulled back towards the front handle).
- Grip the front handle with your left hand and the rear handle with your right hand.
- Press the lock-off button and then squeeze the trigger switch to start the chainsaw.
- Making a Cut:
- Always maintain a firm grip with both hands.
- Allow the chain to reach full speed before contacting the wood.
- Apply light pressure and let the saw do the work.
- Be mindful of potential kickback, especially when cutting with the tip of the bar.
- For felling trees, follow proper notching and felling techniques.
- Stopping the Chainsaw:
- Release the trigger switch.
- Engage the chain brake by pushing the front hand guard forward.
- Remove the battery pack when not in use or when performing maintenance.

Image: A person wearing safety gear operating the DEWALT chainsaw to cut through a fallen log, demonstrating proper cutting technique.
Maintenance
Regular maintenance ensures optimal performance and extends the life of your chainsaw. Always remove the battery before performing any maintenance.
- Chain Sharpening: Keep the chain sharp for efficient and safe cutting. Refer to the chain manufacturer's instructions for proper sharpening angles and tools.
- Chain Tension: Check chain tension frequently. A loose chain can derail, and a too-tight chain can cause excessive wear.
- Bar Maintenance: Clean the guide bar groove and oil holes regularly. Flip the guide bar periodically to ensure even wear.
- Cleaning: Remove sawdust, chips, and debris from the motor housing, chain brake mechanism, and cooling vents. Use a brush or compressed air.
- Oil Reservoir: Keep the oil reservoir filled with appropriate bar and chain oil.
- Storage: Store the chainsaw in a dry, secure location, out of reach of children. Remove the battery pack before storage.

Image: A person using the DEWALT chainsaw to cut a tree branch, highlighting the tool's application in outdoor maintenance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chainsaw does not start | Battery not charged or improperly installed; Chain brake engaged; Lock-off button not pressed. | Charge battery and ensure proper installation; Disengage chain brake; Press lock-off button before trigger. |
| Chain not moving | Chain brake engaged; Chain too tight; Obstruction in chain path. | Disengage chain brake; Adjust chain tension; Remove obstruction (with battery removed). |
| Poor cutting performance | Dull chain; Incorrect chain tension; Insufficient chain oil. | Sharpen or replace chain; Adjust chain tension; Refill oil reservoir. |
| Excessive smoke or heat | Dull chain; Insufficient chain oil; Overloading the motor. | Sharpen or replace chain; Refill oil reservoir; Reduce cutting pressure. |
Specifications
- Model: DCCS677Z1
- Brand: DEWALT
- Power Source: Cordless (Battery)
- Voltage: 60V MAX FLEXVOLT
- Bar Length: 20 inches
- Horsepower: 4 HP (using DCB615 battery)
- Motor Type: Brushless
- Auto-Oiling: Yes
- Product Dimensions (L x W x H): 42" x 13.83" x 11.86"
- UPC: 885911798198
Warranty and Support
DEWALT provides the following warranty for the DCCS677Z1 Chainsaw:
- 3-Year Limited Warranty: Covers defects in material or workmanship.
- 1-Year Free Service: DEWALT will maintain the tool and replace worn parts caused by normal use, free of charge, any time during the first year after purchase.
- 90-Day Money Back Guarantee: If you are not completely satisfied with the performance of your DEWALT Power Tool, Laser, or Nailer for any reason, you can return it within 90 days from the date of purchase for a full refund.
For warranty claims, service, or technical support, please visit the official DEWALT website or contact their customer service department. Keep your proof of purchase.
Official DEWALT Website: www.dewalt.com
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