Lawn Mower Oil Change
If your yard is challenging terrain, hilly, over an acre, dusty, then a second oil change mid way through the season will help protect the motor. Clean the air filter regularly, about every 25 hours, more often in very dry dusty conditions.
Ideally a mower needs a full tune-up at the start of the season and it's only a little more work than an oil change.
When to Tune-up
When Buying a Mower
The Tools You Need
Only basic tools are needed.
Tune-up Parts You Need
The engine code is handy to have when ordering a tune-up kit.
Briggs and Stratton, Kohler, Kawasaki, Honda.
All engines are easy to work on and get parts for.
Turn off the gas tap, if fitted.
Or pinch the gas line gently with a grips.
When turning your mower over, always turn the carburetor side up.
Remove and replace plug. Check that replacement plug is the same.
Thread in new plug by hand before using the plug tool.
Snug the plug down and give it a little tighten.. Not too tight!
Don't fit the plug wire just yet.
Gas & Air
Not all mowers will have a gas filter like this.
Gas filters may be directional, and if so will have an arrow which points to the carburetor.
Some gas tanks will have a filter mesh screen at the bottom.
You may have to remove the tank to clean, depending how bad it is.
Remove & replace the air filter.
Clean the air box being careful not to allow dirt into the carburetor.
Check your blade for damage or excessive wear. If worn, replace.
A new blade will be easier on the mower and your lawn.
Removing Deck blades for sharpening and balancing is advised.
If however, the blades are in good condition, you can sharpen in place.
Sharpening your blade is done with a good quality flat metal file.
File the face of the blade to remove any small nicks.
Now dress the opposite side to remove the burrs.
A sharp blade is the secret to a beautiful healthy lawn, and it extends the life of your mower.
Most mowers will have a belt to drive the mower.
Check the condition the belt and the pulleys.
These belts have a difficult job and can be the cause of various issues.
Regular inspection will tell you if your belt is at the end of its life.
Worn or damaged belts cause slip, which in turn will cause vibration.
The vibration can if ignored go on to cause lots of other issues.
Add oil a little at a time, and check the level. Over filling is not good for the engine.
It will cause oil leaks, misfiring and lots of smoke.
Most small engine mowers will take a little over half a quart (.6lt) of 10w30 engine oil. Yes you can use car engine oil.
Do not thread in dipsticks to check the level, just push in and remove to check.
The full level on this dipstick is at the top of the hatched area.
Spray all controls with Wd40.
Spray front & rear Axles also. Wd40 lubes and protects from rust.
That's it, Nice work!
How much oil does a push mower take? Most mowers will take about half a quart of oil or .6 of a litre from empty. Over filling will cause the engine to smoke.
Can I use 5w30 engine oil? Yes, 5w30 or 10w30 engine oil is good for a lawn mower engine.