why won't my hedge trimmer start

Have you ever been ready to start trimming your hedges, only to find that your hedge trimmer doesn’t work? It can be a real hassle when this happens. If you have ever asked yourself ‘why won’t my hedge trimmer start?’, don’t worry – in this blog post, we’ll give you an answer and show you how to fix it. We’ll look at checking the fuel level, the spark plug, the air filter, and the carburettor settings and even at replacing the battery if you own an electric model. So don’t fret over trying to figure out what’s wrong with your trusty old machine – let us help you get back on track so you can keep those pesky hedges under control once again!

Table of Contents:

Check the Fuel

Whether you’re mowing the lawn, trimming hedges or using a chainsaw to cut down trees, it’s essential that you check the fuel levels of your appliances before starting work. This is important for two reasons: safety and efficiency. First, running out of fuel while operating machinery can be dangerous – you risk damaging the engine but also yourself if something goes wrong. Secondly, it ensures maximum efficiency from your machine, as an empty tank will reduce power output significantly.

Checking the fuel level in most machines is a relatively straightforward process; simply remove the cap on the tank and take a look inside with a flashlight or torch if necessary. If there’s still some petrol left, make sure to top it up at least halfway up the side of the tank – this should provide enough juice for whatever job needs doing.

If there isn’t any petrol left, then fill the tank up until it reaches at least halfway up again – never overfill it, as this could cause serious damage to both engine components and yourself. It’s also worth noting that different types of engines require different grades/types of fuels, so always double-check before filling up.

Key Takeaway: It’s important to check your fuel levels before starting any home and garden project, as running out of fuel can be dangerous. To ensure maximum efficiency, fill your machine up until it reaches at least halfway up the side of the tank. 

Check the Spark Plug

trimming the plants

Spark plugs are an essential part of any engine, and they’re often overlooked when it comes to maintenance. So it’s important to inspect them regularly and ensure they’re in good condition.

To check the spark plug, you’ll need a few tools: a ratchet set with various socket sizes, pliers, wire cutters/strippers, a feeler gauge (for gap measurement), and some anti-seize lubricant. You may also want to have some rags handy for cleaning up any oil or dirt that accumulates on the spark plug during removal.

The first step is to remove the old spark plug from its housing using the appropriate socket size for your vehicle’s make and model. Once removed, inspect it closely for signs of wear, such as cracks or chips in the ceramic insulator around the centre electrode or corrosion on either end of the metal body itself. If significant damage is present, you should replace it immediately before continuing with further checks.

Finally, apply some anti-seize lubricant onto the threads before reinserting it into its housing firmly but gently so as not to strip out any threads while doing so. Once inserted, give it another quarter turn to ensure everything has been tightened correctly before moving on to other tasks.

Key Takeaway: Key takeaway: Regularly check and maintain spark plugs to ensure your hedge trimmer is running optimally. Steps include: 1) Remove the old spark plug, 2) Inspect for damage, 3) Apply anti-seize lubricant, 4) Reinsert into housing.

Clean Air Filter

Air filters are essential for keeping your hedge trimmer running efficiently and effectively. Without a clean air filter, the engine will not be able to draw in enough air for combustion, resulting in reduced power output and increased fuel consumption. Additionally, dirt particles can get into the engine if the filter is clogged or missing altogether, causing premature wear on internal components.

To keep your device running at its best, it’s important to check and clean the air filter regularly. The frequency depends on how often you use your trimmer and where you operate it; if you cut hedges in dusty areas more frequently than usual, then you should check/clean the filter more often too.

The first step is locating the air filter housing, which can usually be found near most engines’ carburettor. Once located, remove any screws that secure it in place before carefully removing both halves of the housing from each other – this will expose either a paper element or foam material, depending on what type of hedge trimmer you have.

If yours has a paper element, gently tap out any debris before using compressed air to blow away any remaining dust particles. Ensure all surfaces are completely dry afterwards, as moisture can cause damage when exposed to heat from normal operation. If an oiled foam material is present instead, soak it overnight with warm soapy water before rinsing thoroughly with cold water until no soap residue remains. Squeeze out excess liquid but do not wring or twist as this could damage fibres within it; leave aside to dry naturally before re-installing back into its housing once fully dried out again (do not use artificial heat sources such as hairdryers).

Finally, replace both halves of the housing together securely using the original screws, ensuring they are tightened properly but without overdoing it. 

Key Takeaway: Regularly check and clean your trimmer’s air filter to maintain peak performance: – Locate the housing near the carburettor  – Tap out debris, use compressed air to blow away dust particles – Oil foam material if present; soak overnight with warm soapy water, rinse thoroughly until no soap residue remains, squeeze out excess liquid but do not wring or twist

Check the Carburettor

Carburettor settings are an essential part of any engine maintenance. A carburettor is a device that mixes air and fuel to create the combustion necessary for an engine to run.

One of the most common reasons your hedge trimmer is not working could be a clogged carburettor. When evaporating, some of the fuel components may leave a sticky substance that, over time, could block the carburettor and prevent the engine from starting.

Locate the carburettor on your device and unscrew the bowl. Clean the bowl with a brush or a toothpick, making sure to remove any debris or excess buildup. Reassemble all parts and tighten all screws and bolts securely. Add fresh fuel to the tank and start your hedge trimmer; if it still doesn’t work, you may need to consult the manufacturer’s instructions or take it to a qualified repair service.

Key Takeaway: Regular maintenance of the carburettor is essential for optimal engine performance. Check yours for clogs and clean it thoroughly.

Replace Battery

cutting the twigs using a small device

When it comes time to replace a battery, you should consider a few things. First, make sure you know what type of battery is needed for your tool or device. Different types of batteries have different voltage requirements, so it’s important that you buy the right one for your needs.

Next, look at how long the battery will last once installed in your device or tool. Many batteries come with an estimated life expectancy, but this can vary depending on usage patterns and environmental conditions, such as temperature or humidity levels in the area where they’re being used. Make sure you choose a battery that will give you enough power over its lifespan to complete all necessary tasks without needing frequent replacements or recharging cycles throughout its lifetime.

Finally, check out reviews from other users who have purchased similar products before making your decision about which brand and model of battery is best for you and your project needs. This can help ensure that whatever product you choose has been tested by others under similar conditions so that it meets expectations when put into use in your own projects around the home or garden space.


Maintaining your hedge trimmer can be a tricky business, but if you try the tips above, you should have no problem getting it started again. Whether it’s checking the fuel, spark plug, air filter or carburettor settings – all of these things are essential for ensuring that your hedge trimmer won’t give you any problems when starting up. If none of these solutions works and your hedge trimmer still won’t start, then perhaps it’s time to invest in a new one!

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *