Summer is peak mowing season, and your Spartan Mower deserves to run at its best. One of the most overlooked — but absolutely essential — parts of mower maintenance is blade care. Sharp blades don’t just cut cleaner — they keep your lawn healthier, your engine under less strain, and your time in the seat more productive.
Here’s your no-nonsense guide to knowing when to sharpen your blades and how to do it right.
Why Sharp Blades Matter
A dull blade tears grass instead of cutting it cleanly, which leads to:
- Brown, jagged grass tips that dry out
- Greater vulnerability to pests and disease
- Increased fuel consumption and engine wear
- Slower mowing times and less efficient performance
Sharp blades equal a cleaner cut, better grass health, and that perfect Spartan-quality finish.
When to Sharpen Your Spartan Mower Blades
As a general rule:
- Sharpen every 20–25 hours of mowing.
- Visually inspect blades before each mow — look for nicks, bends, or dull edges.
- If you mow over sticks, gravel, or sandy soil, your blades will dull faster.
- If the grass looks frayed or you’re having to go over the same area twice, it’s time.
Pro Tip: Keep a spare set of sharp blades on hand so you can swap quickly and sharpen later.
How to Sharpen Your Spartan Blades
Before you get started, safety first:
- Disconnect the spark plug.
- Wear heavy-duty gloves.
- Block the mower deck securely before working underneath.
Step-by-step sharpening:
1. Remove the blades:
Use an impact wrench or socket to remove the blade bolts. Note blade orientation for correct reinstallation.
2. Clean them up:
Scrape off dried grass and debris using a wire brush.
3. Sharpen evenly:
Use a bench grinder, angle grinder, or a blade sharpening tool. Follow the original bevel angle (usually 30°). Sharpen in long, even strokes — don’t grind too aggressively.
4. Balance the blade:
An unbalanced blade can cause vibrations and wear. Use a blade balancer or hang the blade on a nail — if one side dips, grind it down a bit more.
5. Reinstall:
Reattach blades securely, double-check torque specs in your Spartan owner’s manual.
Bonus: Consider a Mulching Blade Upgrade
If you’re mowing frequently this summer, mulching blades are a great upgrade. They chop grass into fine clippings that return nutrients to the soil — fewer clumps, no bagging, and a healthier lawn.
We Can Help!
Sharpening your mower blades, or replacing them if necessary, will not only keep your mower running efficiently, but it will improve the overall health of your lawn. If you would rather a professional do the dirty work, schedule an appointment today at a local Spartan Dealer near you. Our trained professionals can not only replace/sharpen your blades, but can provide essential ongoing maintenance that will keep your mower running in tip top shape for years to come.
Remember - a clean cut is the mark of a well-maintained mower — and a yard that shows it. Stay on top of blade care this summer and you’ll keep your Spartan slicing like new all season long.
Need a new blade set or sharpening tool?
Visit your local Spartan Mower dealer or check out our parts store to stock up.