LAWN & GARDEN | GOLF COURSE EQUIPMENT | MAY 2025
Keep the Greens Running: Essential Mower Maintenance Parts Every Golf Course Needs in May
May is one of the most critical months on the golf course calendar. The season is in full swing, tee times are booked solid, and the last thing any superintendent or equipment manager wants is a mower going down mid-week. With heavy mowing schedules, increased turf stress, and equipment running longer hours than any other time of year, this is the month that separates well-prepared courses from those scrambling to keep up.
At AIC Replacement Parts — the wholesale division of Reliable Aftermarket Parts — we work with dealers and repair shops that service golf courses across the country. We know what parts move fastest in May, and we know what happens when a course runs out of them. This post breaks down the essential mower maintenance parts every golf course should have stocked right now, and what to watch for before small issues become expensive downtime.
Why May Is the Most Demanding Month for Golf Course Equipment
Spring turf growth in May is aggressive. Cool-season grasses like bentgrass and bluegrass are pushing hard, and warm-season varieties are just waking up and need frequent, clean cuts to establish properly. That means mowers are running more hours per day — and accumulating wear faster than at any other point in the season.
Add to that the moisture and debris from spring conditions — wet clippings, heavy thatch, occasional mud — and you have a recipe for accelerated blade wear, belt slippage, and clogged filters. Courses that stay ahead of maintenance in May set themselves up for a smooth summer. Those that don't end up with emergency repairs during their busiest weekends.
The Must-Have Parts List for May
Whether you're a dealer supplying a regional golf course, a repair shop with turf equipment accounts, or an in-house equipment manager, these are the parts you need on hand right now:
1. Mower Blades & Reels
Blades are the number one wear item in May. Dull or damaged blades don't just produce a poor cut — they tear turf rather than slice it cleanly, leaving courses vulnerable to disease and browning. Golf courses typically run reel mowers on greens and fairways and rotary mowers on rough areas, so you need aftermarket blades that meet the exacting tolerances of both types.
• Reel blades for greens mowers (Toro, Jacobsen, John Deere)
• Rotary blades for rough and trim mowers
• Bedknives for reel units — these wear alongside the reel and should be replaced together
2. Drive Belts & Deck Belts
Belts are a common failure point coming out of winter storage. Cold temperatures cause rubber to harden and crack, and the stress of first spring use often reveals belts that are borderline. A snapped belt in the middle of an early morning greens cut means delays that ripple through the entire day's rounds.
• Inspect for cracking, fraying, or glazing — replace proactively rather than reactively
• Keep at least one spare per machine type on-site
• Aftermarket belts from AIC meet OEM specs at a fraction of dealer pricing — ideal for high-volume golf course accounts
3. Air Filters & Oil Filters
Spring mowing generates enormous amounts of grass clippings, pollen, and fine debris. Air filters get clogged fast — and a restricted air filter causes engines to run rich, reduces power, and increases fuel consumption. On a fleet of 15-20 mowers, dirty filters add up to real operating costs.
• Replace air filters every 50-100 hours during heavy mowing season — more frequently in dusty or dry conditions
• Pair with oil filter changes at each service interval to protect engines running extended hours
• Fuel filters are often overlooked — replace annually at minimum, more often on older equipment
4. Spindle Assemblies & Bearings
A wobbling or vibrating deck is usually a spindle or bearing issue. Worn spindle bearings cause uneven cuts, increased vibration, and — left unaddressed — can seize and damage the entire deck assembly. May is a smart time to inspect spindles across the fleet before they become emergencies.
• Listen for grinding, squealing, or excessive vibration during operation
• Check for play in the spindle shaft — any wobble means the bearings are compromised
• Aftermarket spindle assemblies are available for all major brands — John Deere, Kubota, Husqvarna, Scag, Toro, and more
5. Tires & Tubes
Golf course turf is sensitive to tire ruts and compaction, especially when it's soft from spring rains. Low or worn tires can cause tracking issues, uneven weight distribution, and turf damage that takes weeks to recover. Spring is a good time to inspect and replace worn tires before the heavy season traffic begins.
• Check pressure across all equipment — tires naturally lose pressure over winter storage
• Look for cracking in sidewalls on equipment that sat unused over winter
• Turf tires with the correct tread pattern are essential for greens and fairway mowers — wrong tires cause lasting damage
6. Batteries & Electrical Components
Batteries that sat all winter are often the first failure of spring. Cold temperatures reduce battery capacity, and a battery that barely made it through last season won't make it through another. While electrical components aren't glamorous, a mower that won't start at 5:30 AM before an 8:00 AM tee time is a very real problem. Stock replacement batteries and keep a trickle charger on slower-moving equipment.
Stocking Strategy: What Dealers & Repair Shops Should Know
Golf courses typically run a mix of brands across their fleet — you might see John Deere fairway mowers alongside Toro greens mowers and Jacobsen trim units. That means your parts inventory needs to be broad, not just deep. The key is stocking the highest-velocity consumables — blades, belts, and filters — for the top three or four brands your golf course accounts run.
As a wholesale distributor, AIC Replacement Parts makes it easy for dealers and repair shops to stock these parts affordably. Our aftermarket parts meet or exceed OEM specifications, come backed by a 6-month warranty, and are available for fast turnaround shipping — so you're not leaving a course waiting when something breaks mid-week.
Quick Maintenance Checklist for May
Use this as a quick pre-season or mid-season reference for golf course equipment:
• Inspect and sharpen or replace all cutting blades and bedknives
• Replace air, oil, and fuel filters across the fleet
• Check all belts for wear, cracking, or glazing — replace any that are borderline
• Test spindles for vibration or play — address bearing wear early
• Inspect tire condition and pressure across all mowing equipment
• Test and load-test all batteries — replace any that fail
• Grease all fittings and lubrication points per manufacturer schedule
Partner With AIC for Your Golf Course Accounts
If you're a dealer or repair shop servicing golf courses, AIC Replacement Parts is your wholesale source for the aftermarket parts you need to keep those accounts happy and equipment running. We carry parts for all major brands including John Deere, Kubota, Toro, Husqvarna, Scag, and more — at wholesale pricing that helps you stay competitive without sacrificing quality.
Ready to set up a dealer account or place an order? Contact our team or visit aicreplacementparts.com to apply for wholesale pricing and explore our full catalog.
AIC Replacement Parts | Wholesale Division of Reliable Aftermarket Parts | Webberville, MI | aicreplacementparts.com | (888) 984-3053