How to Start a Petrol Lawn Mower

Starting a petrol lawn mower doesn’t have to be difficult. Follow these simple steps and you’ll be able to start your petrol lawn mower first time, every time: 

Check the Oil 

First things first – make sure that your petrol lawn mower has enough oil. Too little will cause the engine to seize up, leaving you with problems that are expensive to fix, while too much can also be damaging. 

There’ll be a dipstick attached to the oil cap on your mower. Pull this out and read the markings, adding more oil if necessary. 

Check the Petrol 

Stale petrol causes so many lawn mower issues. If the petrol in your lawn mower is older than 2-3 months, drain it out and replace it with fresh petrol. 

While it may be tempting to fully fill your lawn mower with petrol, only pour in the amount that you think you’ll use in the next week or so. If you give your lawn mower extra fuel, then this will only end up sitting around in your machine when it’s not being used, which will cause it to turn stale even faster. 

Check the Spark Plug 

Your lawn mower’s spark plug is what ignites the machine, which is why it’s usually located at the back of the engine. Once you’ve found it, give it a quick wipe to make sure that it isn’t dirty or wet – this can affect how it functions. 

Press the Primer Button 

Most lawn mowers have a primer button – you’ll need to press this to push fuel through the machine. If you don’t, then your petrol lawn mower might not start. However, only press it quickly 2-3 times – pressing it too much or for too long will send excess fuel into the engine, which will cause problems later on. 

Don’t worry if your lawn mower doesn’t have a primer button. It likely automatically draws the fuel in itself. 

Start the Mower 

To start your petrol lawn mower, you’ll need to do two things; pull back on the throttle with one hand, and use your other hand to firmly pull the start cable. Some mowers will require a harder pull than others. Once the engine gets going, guide the start cable back into its holder. Don’t let go of the throttle with your other hand, as this will cause the engine to turn off. 

You’re now ready to start mowing!

Scroll to Top