How to inspect and replace lawn mower blade on walk behind mower

Lawn Mower Blade

This quick 3 minute video produced by MTD will teach you how to inspect and replace lawn mower blade on a walk behind mower.

Knowing how to inspect your lawn mower  blade could prevent serious injury.


Transcript Provided by YouTube
0:02 this video will show you how to inspect and replace the cutting blade on a walk

0:06 behind mower

0:07 depending on your model number the instructions in this video

0:11 might vary slightly a plate should be replaced if its chips or bent

0:16 or to warn to be sharpened make sure the replacement blade

0:20 meets all 00 a.m. specifications also

0:23 make sure you have the proper tools for this procedure because you’ll need to

0:28 turn the more on its side to change the blade

0:31 there’s the potential for spilled oil and fuel

0:34 to avoid this run the more intelligent out of gas

0:37 or drain the fuel tank using the Arnold siphon pump

0:41 to avoid burns use caution when working around a hot engine

0:45 if time allows let the engine cool down before you change the blade

0:51 first remove the spark plug wire to make sure the mower won’t

0:54 accidentally start tip them over on its side with the engine air filter facing

1:00 up

1:00 this will keep engine oil from getting into the carburetor in air filter

1:04 inspect the blade for wear or damage

1:08 you should check your cutting blade at least twice a season to make sure it

1:12 sharp

1:12 a dull blade will care rather than cut the grass

1:16 and can turn grass tips brown also

1:19 be sure to check the blade for damage anytime you strike an object

1:24 if you hit something and you’re more vibrates excessively afterward

1:28 have a servicing dealer check it for bed crankshaft or other damage

1:33 to begin use the Arnold blade removal tool

1:37 to hold the blade in place using the proper size socket

1:41 loosen the bolts securing the cutting blade to the engine drive shaft

1:46 some units may have two additional bolt securing the blade adapter to the blade

1:51 loosening them before you remove the blade from the unit

1:54 will make your job easier before the blade is removed

1:58 take note of its orientation you wanna make sure the replacement blade is

2:03 oriented the same way

2:04 with the fins pointed up remove the blade from the mower

2:08 and keep the blade adapter parts for the installation

2:11 the new blade if you simply need to sharpen your blade

2:15 instead of replacing it you can use the Arnold blade sharpener and balancer

2:20 assemble the new blade and blade adapter on the engine crankshaft

2:25 tighten the blade bolt to the proper torque setting as indicated

2:29 in your operators manual

2:34 take off the blade removal tool and return them over to the upright position

2:38 reconnect the spark plug wire and you’re good to go


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About Jack Hayes 75 Articles
Jack Hayes is the Head of Internet Marketing at LawnMowerPros and the editor of this blog. You can often find him creating featured articles, DIY guides, custom graphics and much more.