Frequently Asked Questions

We are open from 8:00 AM to 4:00 PM, Monday through Friday, Central Time, excluding holidays and weekends.

We use the latest industry-standard SSL (Secure Sockets Layer) encryption to protect your personal information.​ 

• In-stock items: Typically ship within 1-2 business days and arrive within 3-7 business days.​
• Heavy or bulky items: Shipped via freight/truck service, usually delivering within 8-10 business days.​
  

Shipping costs are based on item weight and your zip code. Enter your shipping information at checkout to view the total. For questions, contact our Customer Service at 601-342-5178

• Items under 70 lbs.: Typically shipped via UPS Ground
• Larger items: Shipped via freight/truck service. For special shipping rates or preferred carriers, call 601-342-5178.

Yes, we offer replacement parts for many products. Check the technical specifications on product pages or call our customer service for assistance.

If you want to become an authorized FIMIC distributor/dealer, call us at 601-342-5178 for the necessary information and requirements.

We recommend using SAE 80W-90 gear oil for optimal performance. Always check the oil level before use and replace it regularly.​

A noisy gearbox can result from low oil levels, worn-out bearings, or misaligned gears. Check the lubrication and inspect for wear. If the issue persists, consider replacing faulty components.​

When choosing a gearbox, you’ll need to match the horsepower rating, gear ratio, and input & output shaft size to your equipment’s specifications. Start by checking your rotary cutter or mower’s manual for required torque and RPM. 

If you’re unsure, our support team can help cross-reference your model and recommend the perfect gearbox.

Common signs of gearbox wear include unusual grinding noises, excessive vibration, oil leaks, and difficulty maintaining speed or torque. You may also notice metal shavings in the gearbox oil or feel heat coming from the housing during operation. 

In many cases, early repairs (like replacing bearings or seals) can extend gearbox life, but if gears or shafts are worn, a replacement is usually the best option for reliable performance.

Yes. We supply OEM-compatible and aftermarket gearboxes designed to fit popular brands, including John Deere, Bush Hog, Woods, and Howse, among others. 

Our product descriptions list shaft dimensions, bolt patterns, and ratios so you can ensure a proper fit. If you’re upgrading or replacing, we can match your current gearbox to the correct Fimic Implement replacement.

Most agricultural gearboxes require 80W-90 EP (Extreme Pressure) gear oil, but always check the manufacturer’s specifications. We recommend checking oil levels before every season and changing the oil at least once per year or after 250–300 hours of operation. 

For heavy-duty use, oil changes should be more frequent to prevent wear and overheating.

Yes, in many cases, you can replace individual components such as the input shaft, output shaft, seals, or gears without replacing the entire gearbox. We carry replacement parts for multiple gearbox models, making repairs more cost-effective. 

However, if multiple components are damaged or the housing is cracked, a full gearbox replacement is often the better long-term solution.

A 1:1 gearbox ratio means the input and output shafts turn at the same speed. These are typically used when you don’t need to change RPM between the tractor PTO and the implement. A reduction gearbox lowers the output speed while increasing torque, which is useful for heavy-duty mowing, tilling, or shredding applications. Choosing the right ratio depends on your implement’s operating requirements — contact us if you’re unsure which setup is best.

All the new gearboxes are shipped without oil to prevent leaks during transit. Before installation, you’ll need to fill the unit with the recommended 80W-90 EP gear oil to the correct level.

 Always check the fill plug before first use and after the first few hours of operation to ensure proper lubrication.

Leaks usually occur due to worn seals, cracked hoses, or over-pressurization. Inspect the cylinder and replace seals if necessary.​

Extend and retract the cylinder slowly several times to remove air while ensuring the hydraulic fluid reservoir is filled to the recommended level.​

Choose a cylinder with the correct bore size, stroke length, and mounting type to match your machine’s specifications. The bore size determines lifting force, the stroke controls movement range, and the mounting style ensures a proper fit. Always confirm the pressure rating matches your hydraulic system to avoid damage.

Watch for oil leaks around the seals, slow or uneven extension, rod pitting, or reduced lifting power. These are signs of worn seals, damaged rods, or internal wear. Ignoring these symptoms can lead to complete failure and equipment downtime.

Keep the rod clean and lightly lubricated to prevent rust and debris damage. Inspect seals regularly and replace them before they fail. Also, check your hydraulic fluid often, dirty or contaminated oil is one of the main causes of premature cylinder wear.

Yes. Many cylinders can be rebuilt using a seal kit if the rod and barrel are still in good shape. This is often a more cost-effective option than replacing the entire unit, but severely worn or bent rods usually require a full replacement.

A single-acting cylinder applies hydraulic pressure in one direction and uses gravity or a spring to return. A double-acting cylinder uses hydraulic pressure for both extending and retracting, offering more precise control and power in both directions. Your choice depends on the equipment’s operational needs.

A stump jumper helps protect the cutter from obstacles like rocks and stumps by allowing the blades to glide over them without causing damage.​

Inspect the stump jumper for wear, dents, or cracks after every season. Replace it if it shows signs of severe wear or imbalance.​

If your driveshaft vibrates excessively, makes unusual noises, or shows signs of excessive wear (e.g., bent tubing or worn U-joints), it’s time for a replacement.​

Apply high-quality grease to the universal joints and telescoping sections every 8-10 hours to prevent wear and tear.​

The blade height depends on the type of vegetation. Set light grass at 2-4 inches, and adjust it for thicker brush to 6-8 inches.​

Unbalanced blades cause excessive vibration. To balance them:​

1. Remove and clean the blades.​
2. Check for uneven wear.​
3. Use a blade balancer or weigh each blade before reinstalling.​

Match the cutter’s width and weight to your tractor’s PTO horsepower rating. A cutter that’s too large will strain the tractor, while one that’s too small will be less efficient for larger areas.

Inspect blades every 25–40 hours of use. Dull blades tear grass instead of cutting cleanly, which can damage the field and reduce efficiency.

Yes. Most rotary cutters can handle light brush and saplings up to about 2 inches thick, but always check the model’s capacity to avoid equipment damage.

Grease all fittings regularly, keep blades sharp, check and refill gearbox oil, and tighten bolts before each use. Preventative care reduces breakdowns and extends equipment lifespan.

A rotary cutter is built for rough cutting overgrown grass, weeds, and brush, while a finish mower is designed for a smooth, manicured cut on lawns and fields.