Leaves are falling, mornings are crisp, and it’s the perfect time to give your mower the attention it deserves. Whether you’re running an Ariens mower, one of the trusted gravely mowers, or another heavy-duty commercial lawn mower, a little fall maintenance prevents big headaches next season. Below is a practical, safety-first checklist with step-by-step guide to winterizing your mower and keeping costs down by protecting key lawn mower parts.
Why fall maintenance matters
- Cold and moisture over winter accelerate corrosion and fuel system problems.
- Dirty decks and dull blades reduce cutting quality and strain motors.
- Batteries left undercharged can fail.
A few hours now will inevitably save hours (and dollars) later.
Quick safety notes before you start
- Work on a cool engine and remove the key.
- Disconnect the spark plug wire(s) to prevent accidental starts.
- Use gloves and eye protection when handling blades or fluids.
Fall maintenance checklist (step-by-step)
- Clean the mower — deck, cooling fins, and undercarriage
- Remove grass, dirt, and debris from the deck and cooling fins to prevent rust and overheating.
- Use a putty knife and a brush; avoid spraying electrical components with a hose.
- For a deep clean on stubborn buildup, a power washer on low pressure or a pressure washer deck kit (used carefully) works — but keep water away from the engine’s intake and electrical connections.
- Change the oil and filter
- Warm oil drains faster and holds contaminants in suspension — change while warm if possible.
- Replace the oil filter if your mower has one. Dispose of used oil properly at a recycling facility.
- Replace or clean the air filter
- Foam filters can often be cleaned and oiled per manufacturer instructions; paper filters should typically be replaced.
- A clean air filter improves performance and prolongs engine life.
- Check and replace spark plugs
- Inspect the spark plug for wear or fouling; replace if necessary.
- Correct gap according to manufacturer specs.
- Stabilize or drain fuel
- Short winter storage (a few weeks to a couple months): Add a fuel stabilizer to fresh fuel, run the engine 5–10 minutes to circulate stabilizer through the system.
- Long winter storage (months): Best practice is to run the engine dry or drain the fuel tank and carburetor to avoid varnish and gum that clog jets.
- Care for the battery
- For ride-ons and commercial units, remove the battery and store in a cool, dry place on a smart charger/maintainer.
- Clean terminals and apply dielectric grease to prevent corrosion.
- If the battery is old or holds low charge, replace it before winter — nothing worse than a dead battery in spring.
- Sharpen or replace blades; inspect blade bolts
- Sharp blades give clean cuts and reduce turf disease.
- Inspect blades for bends, cracks, or excessive wear — replace if damaged.
- Always torque blade bolts to spec when reinstalling.
- Inspect belts, cables, and pulleys
- Look for cracking, glazing, or fraying on belts; replace worn belts.
- Lubricate cable fittings and inspect for smooth operation.
- Check pulleys and idlers for play or noise — worn components affect cutting and drive performance.
- Grease fittings and check bearings
- Grease all zerks (grease fittings) per your owner’s manual to keep spindles and steering components healthy.
- Listen for rough bearings and replace them before they seize.
- Tires, fluid levels, and final checks
- Check tire pressure and condition.
- For hydrostatic transmissions and gearboxes, check fluid levels and change if needed.
- Tighten loose nuts/bolts and check operator safety switches.
Special notes for a commercial lawn mower
If you run a commercial lawn mower, the workload and operating hours are higher — treat maintenance as non-negotiable. Commercial equipment benefits from:
- More frequent oil and filter changes based on service hours.
- Pre-winter professional inspection: belts, hydraulic systems, and deck spindles often need in-depth service.
- Stocking common lawn mower parts so you’re ready for spring downtime.
Dealing with winter storage
- Store mowers in a clean, dry, and enclosed space away from moisture and rodents.
- Place wooden blocks under small engines rather than directly on cold concrete to reduce moisture transfer.
- Cover equipment with a breathable tarp — avoid plastic sheeting that traps condensation.
When to replace lawn mower parts
- Replace parts showing visible wear (cracked belts, scored blades, leaky seals).
- If the mower vibrates, overheats, or shows decreased power after a tune-up, professional diagnosis is warranted.
- Using OEM or high-quality replacement lawn mower parts reduces repeat failures — we stock parts appropriate for Ariens and Gravely models as well as Kawasaki engines.
DIY vs professional service
DIY maintenance is great for routine tasks: oil changes, filters, blade sharpening, and cleaning. But bring your unit in for professional service if:
- You operate a commercial lawn mower or fleet.
- You notice unusual smoke, metal shavings in oil, or severe drivetrain issues.
- You want a seasonal inspection and parts replacement done to manufacturer specs.
Our technicians at Valley View Agri Systems are familiar with common brands — from an Ariens mower used for residential yards to heavy-duty Gravely mowers — and can source the right lawn mower parts.
Short FAQ
Q: How often should I change the oil before winter?
A: At least once a year — fall is perfect. More often if operating heavily.
Q: Should I add stabilizer to old fuel?
A: Stabilizer helps, but if fuel is older than 30–60 days, draining is safer.
Q: Can I leave my mower outside?
A: Not recommended. Covering helps, but indoor storage protects against moisture, theft, and rodents.
Valley View Agri Systems — we’ve got your back
Preparing your mower for winter doesn’t have to be a chore. Whether you ride with an Ariens mower, trust the durability of Gravely mowers, other commercial lawn mower, or just need specific lawn mower parts, Valley View Agri Systems provides parts, service, and seasonal tune-ups to keep your equipment reliable. Contact Valley View Agri Systems today to schedule a fall service or to order parts. Let us help you protect your investment, so spring starts smoothly.