ECHO garden machinery is renowned across the globe for its commercial grade reliability and powerful performance. However, there is nothing more frustrating than stepping out into the garden ready to tackle overgrown borders, only to pull the starter cord and hear absolutely nothing in return.
If your ECHO weed eater (commonly referred to as a strimmer or brushcutter here in the UK) refuses to start, do not panic. You likely do not need to replace the machine. The vast majority of starting issues on two-stroke engines are caused by very simple, easily resolvable maintenance oversights.
At Compass GM, we know ECHO equipment inside and out. To help you get back to your garden maintenance as quickly as possible, we have put together this comprehensive guide on how to diagnose and fix a stubborn strimmer.
The Quick Answer
Why won’t my ECHO weed eater start? If your ECHO weed eater will not start, the engine is likely missing one of the three essential components required for combustion: fuel, air, or a spark. First, ensure you are using fresh petrol mixed at the correct 50:1 ratio with 2-stroke oil. Next, remove and inspect the spark plug; if it is blackened, wet, or damaged, it needs cleaning or replacing. Finally, check the air filter for blockages. If the machine still fails to start after addressing these three areas, the carburettor may be clogged with old fuel residue.
1. Verify The Starting Procedure
Before you start dismantling your machinery with a spanner, it is always worth double-checking that the cold start procedure is being followed correctly. It is very easy to accidentally flood a two-stroke engine by over-priming it.
If you are starting the machine from cold, follow these exact steps:
Switch It On: Ensure the ignition switch on the handle is firmly pushed to the “On” or “Start” position.
Prime the Engine: Press the clear primer bulb (located under the carburettor) firmly four to five times until you can see fuel flowing through the clear return pipe.
Set the Choke: Move the choke lever to the “Cold Start” or “Closed” position.
Pull the Cord: Pull the starter rope briskly. The engine should “pop” or attempt to fire within three to four pulls.
Open The Choke: As soon as you hear that first pop, immediately move the choke lever to the “Run” or “Open” position. Pull the cord again, and the machine should start.
If you leave the choke closed after the engine pops and continue to pull the cord, you will flood the engine with excess fuel.
2. Check For Stale Or Incorrect Fuel
Fuel problems are the number one cause of starting failures in garden machinery. Modern unleaded petrol contains ethanol, which naturally attracts moisture from the air. If petrol is left sitting in your weed eater or a plastic jerry can for more than thirty days, it begins to degrade and go stale.
Stale fuel loses its combustibility and leaves behind a sticky varnish that clogs the microscopic jets inside your carburettor.
The Solution: If the fuel in the tank has been sitting there since last autumn, safely drain it out. Refill the tank with a fresh batch of premium unleaded petrol.
The Mix Ratio: Ensure you have mixed the fresh petrol with a high-quality 2-stroke engine oil. ECHO machines require a strict 50:1 ratio (50 parts petrol to 1 part oil). Using too much oil will foul the spark plug, while using too little will permanently destroy the engine.
3. Inspect The Spark Plug
If the machine has fresh fuel but still refuses to fire, you need to check if the engine is producing a spark.
Use a standard spark plug socket to remove the plug from the top of the engine block. Inspect the tip of the plug closely.
Wet Plug: If the tip is soaking wet with fuel, the engine is flooded. Leave the plug out for twenty minutes to allow the excess fuel vapours inside the cylinder to evaporate. Wipe the plug dry before reinstalling it.
Blackened Plug: If the tip is covered in thick, black carbon soot, it will struggle to generate a spark. You can clean this gently with a wire brush, but spark plugs are very inexpensive. We highly recommend replacing it with a brand new one to guarantee a strong spark.
Testing The Spark: Reconnect the rubber boot to the removed spark plug. Hold the metal thread of the plug against the metal engine cylinder. Ensure the ignition switch is on, and pull the starter cord. You should see a bright blue spark jump across the gap. If there is no spark, the plug is dead and must be replaced.
4. Examine The Air Filter
An engine needs to breathe freely to run smoothly. The air filter on a weed eater is designed to stop dust, grass clippings, and dirt from entering the carburettor. Over time, this filter becomes completely clogged.
When the filter is blocked, the engine is starved of oxygen. This creates a “rich” running condition where too much fuel enters the cylinder, which can prevent the machine from starting altogether.
Remove the plastic air filter cover and take out the foam pad. If it is lightly soiled, you can wash it in warm soapy water, rinse it thoroughly, and let it dry completely before putting it back. If it is disintegrating or heavily stained with oil, you need to order a replacement filter.
5. Address Carburettor Blockages
If you have fresh fuel, a clean air filter, and a brand new spark plug, but the machine still will not start, the issue almost certainly lies within the carburettor.
As mentioned earlier, stale fuel leaves behind a sticky residue. This residue blocks the tiny internal jets that spray fuel into the engine. While advanced DIY mechanics can remove the carburettor and clean it out using specialist carburettor cleaner spray, this is a delicate task. The internal diaphragms and gaskets are fragile and easily damaged.
If you suspect a blocked carburettor, it is usually best to bring the machine to a professional.
Conclusion
By systematically checking your fuel quality, spark plug health, and air flow, you can resolve the vast majority of starting issues right there in your garden. Regular maintenance is the key to keeping your two-stroke machinery running reliably season after season.
If you need replacement spark plugs, fresh 2-stroke oil, or a new air filter to get your machine running again, we have everything you need. Alternatively, if your old machine has finally reached the end of its life, browse our exceptional range of brand new ECHO strimmers and brushcutters today at Compass GM.
