Introduction
Many homeowners and landscapers ask, “How to Feed String on Stihl Weed Eater?” The answer is straightforward when you understand the Tap & Go head that equips most modern Stihl trimmers. This system lets you advance fresh cutting line with a simple tap on the ground, eliminating the need for manual winding or complicated spool changes. In this guide you will learn the mechanics of the Tap & Go head, the tools you need, a detailed step‑by‑step feeding procedure, common pitfalls, maintenance tips, and a comparison of Stihl trimmer heads so you can choose the best option for your work.
- Understanding the Tap & Go Head
- How the Tap & Go Mechanism Works
- Tools and Materials Needed
- Preparing the Trimmer
- Safety Precautions
- Step‑by‑Step Guide to Feeding String
- Removing the Spool
- Loading New Line
- Adjusting Line Length
- Common Mistakes and How to Avoid Them
- Tips for Optimal Performance
- Comparison of Stihl Trimmer Heads
- Maintenance and Care
- Frequently Asked Questions
- Conclusion
Understanding the Tap & Go Head
The Tap & Go head is a semi‑automatic line‑feed system designed for speed and convenience. Unlike a fixed‑line head that requires you to stop, unwind, and rewind the spool manually, the Tap & Go head contains a spring‑loaded spool that releases a few inches of line each time you tap the head against the ground while the engine is running. This design reduces downtime and keeps the cutting diameter consistent, which is especially valuable when you are trimming large areas or tackling thick grass.
How the Tap & Go Mechanism Works
Inside the head, a centrifugal clutch engages the spool when the engine reaches operating speed. When you lightly tap the head on a hard surface, a small pawl releases the spool lock, allowing the spring to unwind a preset length of line. The line then passes through the eyelet and extends to the cutting radius. Re‑engaging the throttle locks the spool again, holding the new line in place. Because the feed length is calibrated at the factory, you rarely need to adjust it, but you can fine‑tune the line length by trimming the excess after each feed.
Tools and Materials Needed
Before you begin, gather the following items to make the process smooth and safe:
- Stihl trimmer with Tap & Go head installed
- Replacement trimmer line (diameter matching your head, typically 0.080 in. or 0.095 in.)
- Protective gloves and safety glasses
- Small flat‑head screwdriver (for occasional spool‑cap removal)
- Clean rag or brush to remove debris from the head
- Owner’s manual for model‑specific torque specs
Preparing the Trimmer
Start by placing the trimmer on a stable, flat surface. Ensure the engine is off and the spark plug wire is disconnected to prevent accidental starts. Remove any grass buildup around the head with a brush or compressed air; a clean head feeds line more reliably. Check the spool for cracks or excessive wear—if the spool is damaged, replace it before loading new line.
Safety Precautions
Always wear eye protection and gloves when handling trimmer line, as the line can snap and cause injury. Keep bystanders at a safe distance while the engine runs. Never attempt to feed line while the engine is at full throttle; a gentle tap at idle speed is sufficient and reduces the risk of line whipping. If the head feels hot after extended use, allow it to cool before servicing.
Step‑by‑Step Guide to Feeding String
Follow these ordered steps each time you need to advance or replace the line on a Stihl Tap & Go head. The procedure works for both initial loading and mid‑job line advances. (See Also:How To Load Craftsman Weed Eater)
- Turn off the engine and disconnect the spark plug wire.
- Remove the spool cap by turning it counter‑clockwise; set the cap aside.
- Pull the old line out of the spool completely. If the line is tangled, unwind it carefully to avoid damaging the spool.
- Cut a length of new line according to the manufacturer’s recommendation (usually 10–12 ft for a 0.095 in. line).
- Insert one end of the line into the anchor hole on the spool and wind the line evenly in the direction indicated by the arrow on the spool.
- Leave about 6 in. of line protruding from the eyelet on each side of the head.
- Replace the spool cap and tighten it clockwise until snug.
- Reconnect the spark plug wire and start the engine.
- Allow the engine to reach idle speed, then gently tap the head on a hard surface (concrete or a wooden block) once or twice.
- Observe the line extending through the eyelet; if the length is correct, you are ready to trim.
Removing the Spool
If the spool is stuck, apply a small amount of penetrating oil to the threads and wait a minute before attempting to unscrew the cap. Use the flat‑head screwdriver only if the cap has a slot; otherwise, grip the cap firmly with a cloth to avoid stripping the plastic. Never force the cap, as this can crack the head housing.
Loading New Line
When winding the new line, keep tension consistent so the coils sit flat against each other. Overlapping or loose coils cause uneven feeding and can jam the mechanism. If your model uses a dual‑line head, wind each line into its own channel, following the same direction arrow. After winding, trim any excess line that extends beyond the eyelet to prevent snagging on debris.
Adjusting Line Length
The Tap & Go system is calibrated for a specific feed length, but you can fine‑tune it by trimming the line after a feed. Measure the cutting diameter with a ruler; the ideal length is usually 12–14 in. from the head center to the tip. If the line is too long, it will slap the guard and reduce cutting efficiency. If too short, the head will not cut cleanly. Adjust by pulling the line out a little more or cutting it back, then test with another tap.
Common Mistakes and How to Avoid Them
One frequent error is using the wrong line diameter. A line that is too thick will not feed, while a line that is too thin will break prematurely. Always verify the recommended diameter in the owner’s manual. Another mistake is over‑tightening the spool cap, which can bind the spool and prevent the spring from releasing line. Tighten only until the cap seats firmly. Users also sometimes tap the head on soft ground, which does not provide enough impact to trigger the feed; a hard surface is essential. Finally, neglecting to clean the head after each use allows grass and dirt to accumulate, eventually clogging the feed mechanism.
Tips for Optimal Performance
- Use high‑quality, low‑stretch trimmer line designed for Tap & Go heads; it feeds smoother and lasts longer.
- Store replacement line in a cool, dry place to prevent moisture absorption, which can make the line brittle.
- Inspect the eyelet for wear; a grooved eyelet can cause line to fray and break.
- Periodically lubricate the spool shaft with a light silicone spray to keep the spring action smooth.
- When trimming near hard objects, reduce throttle slightly to lessen the chance of line snapping.
Comparison of Stihl Trimmer Heads
The table below highlights the key differences among the most common Stihl trimmer heads, helping you decide which system best fits your workload.
| Head Type | Feed Mechanism | Line Capacity | Best For |
|---|---|---|---|
| Tap & Go | Manual tap to advance line | Up to 0.095 in. dual line | Residential and light commercial use |
| Fixed Line | Pre‑cut lengths inserted manually | Single line up to 0.105 in. | Heavy‑duty brush clearing |
| Auto‑Feed (AutoCut) | Centrifugal force feeds line automatically | Dual line up to 0.095 in. | Continuous professional trimming |
| Bump Feed | Tap head on ground to release line | Dual line up to 0.105 in. | General purpose, easy maintenance |
Maintenance and Care
Regular maintenance extends the life of your Tap & Go head and ensures consistent line feeding. After each use, remove the spool and blow out any grass clippings with compressed air. Wipe the head housing with a damp cloth and inspect the spring for corrosion. Once per season, disassemble the head completely, clean all components with a mild solvent, and apply a thin coat of silicone grease to the spool shaft. Replace the spring if it shows signs of fatigue (loss of tension or uneven feed). Keeping the head clean and lubricated prevents the most common feeding problems.
Frequently Asked Questions
How often should I replace the trimmer line on a Stihl Tap & Go head?
Line replacement frequency depends on the type of vegetation and the length of each trimming session. For typical residential lawns, a 10‑ft spool lasts several hours of cutting. Inspect the line after each job; if it appears frayed, shortened, or broken, reload a fresh length. (See Also:Where To Buy Ryobi Weed Eater)
Can I use any brand of trimmer line with my Stihl Tap & Go head?
While many aftermarket lines fit, Stihl recommends using line that matches the specified diameter and material (usually a low‑stretch nylon). Using incompatible line can cause feeding issues or premature wear on the eyelet.
Why does my Tap & Go head not feed line when I tap it?
Common causes include a clogged eyelet, a worn spring, or tapping on a surface that is too soft. Clean the head, verify the spring tension, and tap on concrete or a hardwood block. If the problem persists, the spool or pawl may need replacement.
Is it necessary to disconnect the spark plug wire every time I load line?
Yes. Disconnecting the spark plug wire eliminates the risk of accidental engine start while your hands are near the rotating head. It is a quick safety step that prevents serious injury.
What is the correct line length to leave protruding from the eyelet after loading?
Leave approximately 6 in. of line on each side of the head. This length provides enough material for the first few taps while keeping the line from contacting the guard or the operator. (See Also:How To Remove Weed Eater Spool)
Conclusion
Feeding string on a Stihl weed eater equipped with a Tap & Go head is a simple, repeatable process once you understand the mechanism and follow the proper steps. By preparing the trimmer, using the correct line diameter, winding the spool evenly, and tapping the head on a hard surface at idle speed, you can keep the cutting line at the optimal length for clean, efficient trimming. Avoid common mistakes such as over‑tightening the spool cap, using the wrong line, or neglecting regular cleaning. With routine maintenance and the tips outlined above, your Tap & Go head will deliver reliable performance season after season. Remember, the key to success is consistency—follow the step‑by‑step guide each time you need to advance or replace line, and you’ll spend less time fussing with the head and more time achieving a perfectly trimmed lawn.