4QL® 26.5cc 4-Cycle 18" Gas String Trimmer, Attachment Capable

Yes. The SENIX GTS4QL-L features a 26.5cc 4-cycle engine and a wide 17.7-inch cutting swath for trimming tall grass, overgrown weeds, and lawn edges. Its straight shaft provides extended reach for working along fences, around trees, and under shrubs. It's ideal for routine residential yard maintenance and moderate overgrowth, but not for cutting thick woody brush or branches.

No. Unlike traditional 2-cycle weed eaters, the SENIX GTS4QL-L runs on gasoline without mixing gas and oil. Its 4QL 4-cycle engine has a separate 2 oz (60 mL) engine oil reservoir. Use fresh unleaded gasoline containing no more than 10% ethanol and an approved 4-cycle engine oil, such as SAE 10W-30. Always add engine oil before first use and check the oil level before starting.

The SENIX GTS4QL-L features a primer bulb and choke system designed to support reliable engine starting. For a cold start, press the primer bulb 5–10 times, engage the choke, and pull the starter cord following the owner's manual. Release the choke as directed once the engine begins to fire. For warm starts, the choke is generally unnecessary. Using fresh fuel and maintaining the air filter and spark plug can help prevent starting problems.

The SENIX GTS4QL-L uses dual 0.095-inch (2.4 mm) nylon trimmer line with a bump-feed cutting head. To release more line while trimming, lightly tap the bump knob on firm ground while the cutting head is spinning at operating speed. When replacing the line, stop the engine, let the head cool, and follow the spool's winding directions to help prevent tangles and feeding problems.

Yes. The SENIX GTS4QL-L features an attachment-capable straight shaft with a coupler that allows you to replace the lower trimmer attachment with compatible accessories. This design can expand the tool's versatility for different yard maintenance tasks. Always verify the attachment's shaft connection and compatibility with the GTS4QL-L before purchasing or installing it.

The SENIX GTS4QL-L has a listed weight of approximately 11.97 lbs and features an adjustable front handle and an included shoulder strap for improved support. Its 57-inch straight shaft helps extend your reach, while the ergonomic design supports controlled two-handed operation. Adjusting the handle and shoulder strap to your height can help reduce fatigue during longer trimming sessions.

The SENIX GTS4QL-L has a 9.46 fl oz (280 mL) fuel tank for gas-powered trimming without battery charging. Actual runtime depends on engine speed, grass density, and how continuously you operate the trimmer. Lower throttle settings generally use less fuel than continuous full-throttle operation. For longer projects, stop the engine and allow it to cool before refueling.

The SENIX GTS4QL-L requires regular engine oil checks, periodic oil changes, air filter cleaning, spark plug inspection, and trimmer line replacement. The owner's manual recommends changing the engine oil every 20 operating hours and cleaning the air filter every 20 hours, or every 10 hours in dusty conditions. Inspect the fuel system and fasteners before use, and follow the manual's storage instructions to help maintain reliable performance.