Archive for the ‘small engine’ Tag

Lawnmower Tune up   2 comments

Today I’m going to show you how to give your push lawnmower a tune up.  About 2/3 of the way through mowing my new lawn for the first time, my mower started spittin’ and sputterin’, and I realized it was time for some routine maintenance.

Job: Lawnmower tune up
Tools: 3/8″ drive ratchet w/ extension, spark plug wrench/socket/adjustable wrench, spark plug gauge, measuring cup, funnel, flathead screwdriver, oil
Supplies: motor oil, air filter, spark plug
Time: 1 hour
Cost: about $16

P1020382 (Medium)

Check your owner’s manual for the specs on the spark plug, filter, oil capacity, etc.  When you’re ready to get started, run the engine for a few minutes to get the oil warm, then shut it off.  Before you do anything else, be sure to disconnect the spark plug wire to prevent an unintentional start-up.  I can’t imagine how an “unintentional start-up” might occur, but as long as you’re going to have your hands that close to a lawnmower blade, there’s no sense in taking any chances!

P1020386 (Medium)

Next, pick up the mower and place it on something that will raise it enough to give you easy access to the underside of the deck.  Sawhorses work great for

P1020385 (Medium)

Now, place an oil drain pan underneath the mower and use your ratchet and extension to loosen the drain plug.  If your mower is as high off the floor as
mine, you might want to hold the pan up near the drain plug until you know where the oil’s going to go.  After all the oil has drained out, replace the drain

P1020387 (Medium)

P1020384 (Medium)

Measure the appropriate amount of engine oil (mine takes 18 oz.) and remove the dipstick, placing a funnel in the fill hole.  Slowly pour the oil into the
funnel, stopping to check the level with the dipstick once you’ve poured most of it.  Once the dipstick reads full, screw it back in and hand tighten it.

P1020393 (Medium)P1020394 (Medium)P1020395 (Medium)

Next, we’re going to replace the spark plug.  It should already be unplugged, so just remove it with a spark plug wrench or socket.  I used an adjustable
wrench because it’s all I had on hand at the time.

P1020388 (Medium)

Set the gap on your new plug and install it, tightening it with your wrench.

P1020391 (Medium)

To access the air filter, use a flathead screwdriver to remove the air filter assembly, taking care not to drop any debris into the carburetor.

P1020396 (Medium)

P1020397 (Medium)

Pull the plastic shell apart and remove the filter.  As you can see, mine is filthy.

P1020398 (Medium)

Saturate the new filter with fresh oil and squeeze out the excess.  Place it in the filter assembly and reinstall it.

P1020399 (Medium)

Put the mower back on the floor and reconnect the spark plug.  That’s it, you’re done!  Crank it up and get to work!

P1020400 (Medium)


Posted July 5, 2009 by i2kdave in Uncategorized

Tagged with , ,