After sitting idle through winter, even a reliable mower can struggle if key components are worn or neglected. A few simple part replacements can make a big difference in performance, reliability and cut quality.

Here are five essential Craftsman lawn mower parts to replace before the mowing season begins.

1. Air Filter

Your mower’s air filter keeps dirt, grass and debris out of the engine. Over time, it becomes clogged which restricts airflow and reduces engine performance.

By replacing it in the Spring you can improve engine efficiency, help the mower start easier and prevent long-term engine damage while using it throughout the year.

If your mower uses a foam or paper air filter, replacing it at the start of the season is quick, inexpensive, and highly effective.

2. Spark Plug

A worn or dirty spark plug can cause hard starts, misfires or uneven engine performance — especially after winter storage.

Benefits of a new spark plug:

• Faster, more reliable starting
  
  
• Smoother engine operation
  
  
• Better fuel efficiency
  
  

This is one of the simplest replacements you can make, and it often delivers immediate results.

3. Lawn Mower Blade

If your mower blade is dull, bent or nicked, it won’t deliver a clean cut. Instead of trimming grass, a worn blade tears it, which can lead to brown tips and unhealthy turf.

With a new blade you’ll experience cleaner, more even cuts, healthier grass growth and reduced strain on the engine. Spring is the ideal time to install a new Craftsman-compatible blade and start the season sharp.

4. Fuel Filter

Old fuel residue and debris can clog your mower’s fuel system over time. A dirty fuel filter restricts fuel flow and can cause stalling or poor performance.

Signs it’s time to replace it:

• Engine surging or sputtering
  
  
• Difficulty maintaining speed
  
  
• Trouble starting after storage
  
  

Replacing the fuel filter ensures consistent fuel delivery and smoother operation throughout the season.

5. Drive Belt or Deck Belt

Belts wear down gradually and may crack, stretch or slip — especially after months of inactivity.

Why belts matter:

• Drive belts control wheel movement
  
  
• Deck belts power the blade system
  
  
• Worn belts reduce cutting power and traction
  
  

Inspecting and replacing belts in spring helps prevent mid-season breakdowns and uneven cutting.

Replacing these five parts can dramatically extend the life of your Craftsman lawn mower and improve its performance all season long. Most of these components are affordable, easy to install and well worth the effort before your first mow of the year.