How-tos

Access step-by-step repair and maintenance guides to keep your off-road equipment running smoothly with our expert tips!

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5 Symptoms of a Bad Crankshaft Position Sensor
Dec 7, 2025

5 Symptoms of a Bad Crankshaft Position Sensor

Your engine’s CKP sensor is critical. Common crankshaft position sensor symptoms include stalling, no-starts, and rough performance. Ignoring them can lead to costly downtime and serious safety risks. Learn how to spot them.

P0615 Error Code Explained: What It Means, Causes, & Fixes
Dec 6, 2025

P0615 Error Code Explained: What It Means, Causes, & Fixes

This guide explains the P0615 starter relay circuit malfunction in detail—covering what the code means, common causes like wiring faults or relay failure, key symptoms, step-by-step diagnostics, and practical repair solutions. Learn how to prevent future P0615 issues and find reliable aftermarket truck parts at FridayParts.

Can I Put Water in My Coolant Tank? Quick Explanation
Dec 6, 2025

Can I Put Water in My Coolant Tank? Quick Explanation

Engine overheating? Coolant low? You’re stranded with just a bottle of water. Can you put that water in my coolant tank? The short answer is yes, but it’s a high-stakes gamble. Discover the crucial steps for this emergency fix and why it could save—or wreck—your engine.

How to Check DEF Fluid Level?
Dec 5, 2025

How to Check DEF Fluid Level?

That dreaded “DEF Level Low” alert can bring your workday to a screeching halt. But what if the problem isn’t just an empty tank? We decode what your machine’s DEF fluid level warning is really telling you, from faulty sensors to hidden clogs, so you can fix it fast and avoid costly downtime.

Toyota Forklift Dashboard Symbols and Meanings
Dec 4, 2025

Toyota Forklift Dashboard Symbols and Meanings

When a warning light flashes on your Toyota forklift, it’s not just a symbol — it’s your machine’s way of telling you something is wrong. Understanding these forklift dashboard symbols helps you catch problems early, prevent costly failures, and keep your operation running safely. This guide breaks down each icon, its color meaning, and the exact steps you should take when a warning appears, giving you clear, actionable knowledge for everyday forklift use.

How to Bypass a Starter Relay on Off‑Road Machinery
Dec 4, 2025

How to Bypass a Starter Relay on Off‑Road Machinery

Engine won’t crank? Lights on but all you hear is a click? Don’t order an expensive starter yet! This guide shows you how to safely bypass the starter relay—a quick test to pinpoint the real problem and save you hundreds. Your fix might be easier and cheaper than you think.

How Does an Engine Block Heater Work?
Dec 4, 2025

How Does an Engine Block Heater Work?

Curious about how an engine block heater works? It uses a simple electric element to warm your engine’s coolant. This pre-heated fluid circulates, thinning the oil and warming the block for an easy, low-stress start. Learn how this essential tool protects your heavy equipment’s engine in freezing weather.

P0356: Ignition Coil F Primary/Secondary Circuit Malfunction
Dec 3, 2025

P0356: Ignition Coil F Primary/Secondary Circuit Malfunction

P0356 shows a problem in the Ignition Coil “F” primary or secondary circuit. It appears when the PCM can’t properly operate that coil. Learn the common causes like vibration and moisture, and follow our step-by-step guide to diagnose and fix the problem fast.

Komatsu Fault Code List Lookup and Decoding
Dec 3, 2025

Komatsu Fault Code List Lookup and Decoding

Understanding SPN FMI codes is essential for preventing breakdowns and keeping off-road equipment running reliably. This guide explains what each code means, why faults occur, and how to respond quickly to avoid expensive downtime.

Is Your Alternator Failing? 5 Signs & 3 Easy Tests for Off‑Road Machinery
Dec 3, 2025

Is Your Alternator Failing? 5 Signs & 3 Easy Tests for Off‑Road Machinery

Dead battery again? Don’t be so sure it’s the battery’s fault. The true culprit is often a failing alternator. Before you face costly downtime, learn the 5 warning signs and 3 simple multimeter tests to diagnose your alternator in minutes. Don’t guess, test!

From Failure to Full Power: How to Rebuild an Alternator Like a Pro
Dec 2, 2025

From Failure to Full Power: How to Rebuild an Alternator Like a Pro

Don’t let a failing alternator cost you $800 in downtime. Most failures are just worn brushes or bearings. This guide shows you how to rebuild your machine’s alternator for under $50. Gain the skills, save a fortune, and get back to work with a repair you can trust. Your step-by-step DIY is here.

Cummins Fault Codes List Complete Guide(2025 Update)
Dec 2, 2025

Cummins Fault Codes List Complete Guide(2025 Update)

This guide provides a complete 2025 reference to Cummins SPN FMI fault codes, explaining how to read them, what common codes mean, and how to diagnose, repair, and prevent engine issues for reliable off-road performance.