Makita DCS 7901 Chainsaw Manual

The Makita DCS 7901 is a powerful chainsaw designed for professional use, featuring a 79cc engine, a 20-inch guide bar, and advanced anti-vibration technology. This manual provides essential information on safety, features, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your chainsaw.

1. Features at a Glance 2. Safety Information 3. Operation Instructions 4. Specifications 5. Maintenance 6. Troubleshooting

Features at a Glance

Key features include a high-performance engine, ergonomic design, and easy-start technology. The chainsaw is equipped with a chain brake for added safety and a tool-less chain adjustment system for convenience.

Feature	Description
Engine	79cc 2-stroke engine for powerful cutting performance
Guide Bar	20-inch guide bar for efficient cutting
Anti-Vibration	Advanced technology to reduce operator fatigue
Chain Brake	Automatic chain brake for enhanced safety
Tool-less Adjustment	Easy chain tensioning and adjustment

Safety Information

Always wear appropriate safety gear, including gloves, goggles, and hearing protection. Ensure the work area is clear of obstacles and bystanders before operating the chainsaw.

Read the manual thoroughly before use.
Inspect the chainsaw for damage before each use.
Keep hands and feet away from the cutting area.
Never operate the chainsaw while under the influence of drugs or alcohol.

Operation Instructions

To start the chainsaw, ensure the chain brake is engaged, and follow the starting procedure outlined in the manual. Always maintain a firm grip and a stable stance while operating.

Engage the chain brake.
Set the choke to the closed position.
Pull the starter rope until the engine fires.
Adjust the choke to the open position and pull the starter rope again to start.

Specifications

Engine Type: 79cc 2-stroke
Guide Bar Length: 20 inches
Weight: 12.3 lbs
Fuel Capacity: 21.5 oz
Oil Capacity: 8.5 oz
Chain Speed: 13.5 m/s
Sound Level: 112 dB(A)

Maintenance

Regular maintenance is essential for optimal performance. Clean the air filter, check the spark plug, and ensure the chain is properly lubricated.

Clean the air filter every 10 hours of operation.
Inspect the spark plug and replace if necessary.
Lubricate the chain before each use.
Store the chainsaw in a dry place when not in use.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Chainsaw won't start	Fuel issue	Check fuel level and quality; ensure choke is set correctly.
Chain not moving	Chain tension	Adjust chain tension; check for obstructions.
Excessive vibration	Worn parts	Inspect and replace worn components.
Engine overheating	Lack of lubrication	Ensure chain is properly lubricated; check oil level.

Service: For further assistance, contact Makita customer service at 1-800-4-MAKITA or visit www.makitatools.com.