Husqvarna K 770 OilGuard Operator's Manual

Husqvarna K 770 OilGuard Power Cutter manual cover
Pages 120
Year 2021
Language(s)
English en
French fr
Spanish sp

Husqvarna K 770 OilGuard Power Cutter Specification

The Husqvarna K 770 OilGuard is a robust and efficient power cutter designed for professional use in construction and demolition. It features a powerful 74 cc engine that delivers 5 horsepower, ensuring high performance and reliability in demanding conditions. The machine is equipped with an innovative OilGuard system, which includes an optical detection mechanism that prevents engine damage by monitoring oil quality and alerting the user to potential issues. This system enhances durability and reduces maintenance needs.

The cutter is engineered with a 12-inch or 14-inch blade capacity, providing versatility for a variety of cutting tasks. It incorporates a semi-automatic SmartTension system that maintains optimal belt tension, minimizing wear and maximizing belt life. The Active Air Filtration system, a leading centrifugal air cleaning solution, extends the service intervals for the cutter by preventing dust and debris from reaching the engine.

Ergonomically designed, the K 770 OilGuard features a low-weight chassis and a vibration-dampening mechanism, ensuring comfortable handling and reducing operator fatigue. Its efficient vibration control system delivers a vibration level of 2.5 m/s², which complies with stringent safety standards, enhancing user comfort during prolonged use. The cutter also supports wet cutting with a progressive water valve that precisely controls water flow to the blade, ensuring efficient dust suppression.

This model includes a magnesium blade guard that is adjustable and provides excellent visibility of the cutting area. Additionally, the Husqvarna K 770 OilGuard is compatible with a range of blades, including diamond blades, making it suitable for cutting through concrete, masonry, and metal materials. This combination of advanced features makes the K 770 OilGuard a reliable and versatile choice for construction professionals.

Husqvarna K 770 OilGuard Power Cutter F.A.Q.

What is the purpose of the OilGuard system in the Husqvarna K 770?

The OilGuard system in the Husqvarna K 770 is designed to prevent engine damage by detecting incorrect fuel mixtures or insufficient oil levels. This feature helps ensure the longevity and performance of the power cutter by alerting the user before damage occurs.

How can I troubleshoot starting issues with my Husqvarna K 770?

To troubleshoot starting issues, check the fuel level and quality, ensure the spark plug is clean and correctly gapped, and verify that the air filter is not clogged. Additionally, inspect the starter cord and recoil spring for any damage.

What regular maintenance should be performed on the Husqvarna K 770?

Regular maintenance tasks include checking and cleaning the air filter, inspecting and replacing the spark plug as needed, checking the condition of the cutting blade, and ensuring proper tension of the drive belt. Lubricate moving parts and check for fuel or oil leaks regularly.

How do I safely replace the cutting blade on the Husqvarna K 770?

To safely replace the cutting blade, ensure the power cutter is turned off and disconnected from any power source. Use a wrench to loosen the blade bolt, remove the old blade, and replace it with a new one, ensuring it is properly aligned. Tighten the blade bolt securely before use.

What are the recommended fuel and oil types for the Husqvarna K 770?

Use unleaded gasoline with a minimum octane rating of 90, mixed with Husqvarna two-stroke oil at a ratio of 50:1. This mixture ensures optimal performance and engine longevity.

How can I adjust the belt tension on the Husqvarna K 770?

To adjust the belt tension, loosen the belt guard and adjust the tensioning screw until the belt has about 5-10 mm of deflection midway between the pulleys. Retighten the belt guard after adjustment.

What steps should be taken if the OilGuard system activates?

If the OilGuard system activates, check the fuel mixture for the correct oil-to-fuel ratio and ensure the use of high-quality oil. Inspect the oil sensor for any damage and clean or replace it if necessary. Reset the OilGuard system before restarting the engine.

How often should the air filter be cleaned or replaced?

The air filter should be checked and cleaned every 10 hours of operation, and replaced after every 100 hours, or more frequently in dusty environments, to maintain optimal engine performance.

What precautions should be taken when storing the Husqvarna K 770 for an extended period?

Before storing the Husqvarna K 770, drain the fuel tank and run the engine until it stops to clear the carburetor. Clean the machine thoroughly, inspect for any damage, and store it in a cool, dry place away from direct sunlight.

How do I check for and address vibration issues with my Husqvarna K 770?

To address vibration issues, inspect the cutting blade for damage or improper installation, check the drive belt for wear, and ensure all screws and bolts are tightened properly. If vibration persists, consult a professional technician.