Pro Tips, News & Events

John Deere hydraulic oil: how to choose the right type. Don’t start by reading the label on the front of the container. Start with the JDM spec your machine was designed around—usually JDM J20C or JDM J20D. J20C matches Hy-Gard for general temperatures. J20D matches Low-Vis Hy-Gard for cold-weather flow—not as a general upgrade. Get the spec right, then let temperature narrow it down. This guide explains the difference between J20C and J20D, which one fits your machine, and how weather affects your choice. Check the required spec before choosing by season. In shared systems, the wrong fluid affects not just hydraulics but transmissions, wet brakes, and clutches too.

A worn belt can ruin your day. Find the right Kubota mower deck belt diagram for your 42, 48, 54, or 60-inch deck in our guide. We cover warning signs and provide easy step-by-step instructions for a quick replacement.

The Massey Ferguson’s fuse box is the central hub for distributing power and protecting the electrical components. When you run into electrical problems, the fuse box is always the first place to look at. Understanding how to read a Massey Ferguson fuse box diagram can help you troubleshoot and fix electrical system problems, saving you a lot of effort and time. In this guide, we’ll dive into the fuse box diagram for MF 6400 as an example to help you better understand the fuse box.

Don’t guess when choosing a Mobil 424 equivalent. Learn what makes a true UTTO replacement by matching vital specs like J20C and CNH MAT 3525. Discover top options, including Shell Spirax S4 TXM, and protect your equipment.

Alternator not charging? Don’t jump straight to replacing it. On off-road machinery, the fault is usually something simpler—a loose belt, bad cables, a weak ground, or a battery that’s not holding up. Those parts wear out from heat, dust, and vibration long before the alternator does. This guide takes you through the diagnostic steps in the order they should be done: visual inspection, battery voltage checks, alternator output testing, voltage drop tests, and field circuit inspection. Fix belt slip, clean corroded terminals, replace damaged cables, and then consider the alternator. A new alternator won’t last if the ground is bad or the belt is loose. Test everything systematically and replace only what fails.

A carburetor is one of the most important components in a Briggs & Stratton small engine. It mixes air and fuel to create the proper combustion mixture needed for engine operation. When your lawn mower runs into problems such as hard starting, engine surging or poor performance, the carburetor is often the first thing to look at. This Briggs and Stratton carburetor diagram guide explains the main carburetor parts, their functions and how each part works together.

Master your truck’s electrical system with our detailed guide to the Freightliner Cascadia fuse box diagram. We break down the complex SAM Cab and SAM Chassis modules, helping you quickly diagnose and fix common electrical failures.

Changing the mower deck belt is simple with the Gravely mower deck belt diagram at hand. Always consult your owner’s manual and put safety first. At FridayParts, you can explore a vast range of aftermarket Gravely mower parts and mower deck belts. 

How to fix a refrigerant leak on an excavator AC? AC blowing warm air? That’s almost always a refrigerant leak. And fixing it properly means actually finding where it’s leaking and replacing the part that failed—not just adding more refrigerant and hoping it stays. Recharging alone is a band-aid, and leaving a small leak alone will eventually kill your compressor. Here’s what you need to do: check for leaks visually, with soap-and-water, or with UV dye; recover whatever refrigerant is left; replace the damaged part (O-ring, hose, condenser, or seal); pull a vacuum, leak-test it, then recharge with the precise amount. Skip the repair, and a seized compressor could cost you three to five times more.

Seeing the SPN 2011 FMI 9 fault code? It signals a communication loss with your ABS module. This guide walks you through the most common causes, like bad wiring or power loss, and provides a simple step-by-step process to diagnose and fix the problem.

Clogged radiator symptoms and how to fix them. Here’s a tip before you price out a new radiator—most clogs are repairable. It usually comes down to two things: crud blocking the fins on the outside, or rust and scale buildup inside choking off coolant flow. The main signs are pretty clear—temperatures creeping up under load, coolant dumping into the overflow tank, or cold spots on the radiator after it should be warm. This guide shows you how to confirm the problem step by step. Shine a light through the fins to see if they’re packed with debris, check what your coolant looks like, and rule out the thermostat, water pump, cap, and fan system before you pull the trigger. Clean external debris with low-pressure water or air, use a flushing product to break up internal deposits, and only replace the radiator if the flow doesn’t come back after cleaning.

Whenever you run into an electrical problem, the fuse box is the first place to look. In this guide, we’ll dive into the Ford fuse box diagram with the example of a Ford F150 to help you better know the fuses in your Ford trucks.