Yes, you can do it yourself – learning how to change belt on Craftsman snowblower is a simple repair that saves you money. I’ve done this job many times, and with basic tools, you’ll have your machine running in under an hour.
That grinding sound or lack of power is a big clue. Your drive belt is likely worn out or broken. It’s a common issue after a few tough winters of use.
I used to call a repair shop for this. Now I handle it in my own garage. The process is straightforward once you know the steps.
This guide will walk you through the whole job. We’ll cover tools, safety, and each step in plain language. You’ll be ready for the next snowfall.
What You Need to Know First
Before you start, find your model number. It’s on a sticker or metal plate on the machine. This number is key for getting the right new belt.
Not all Craftsman snowblowers are the same. The belt routing can differ between models. Your manual has the specific diagram for your machine.
You will need some basic tools. Grab a socket set, screwdrivers, and a pair of pliers. A floor jack or blocks to lift the machine is also helpful.
Make sure the engine is off and cool. Disconnect the spark plug wire too. This is a critical safety step before any repair work.
Clear a space in your garage or driveway. You need room to move around the snowblower. Lay down a tarp or cardboard to catch any grease.
Give yourself about an hour for the job. Your first time might take a bit longer. Don’t rush it, and you’ll do just fine.
Gather Your Tools and Parts
You don’t need fancy tools for this repair. A standard mechanic’s tool set will cover it. The right parts are more important than the tools.
You must get the correct replacement belt. Use your model number to order the exact part. A generic belt from the hardware store often won’t fit right.
I keep a few common sockets on hand. You’ll likely need a 1/2-inch and 9/16-inch socket. A ratchet handle makes the work much easier.
Have a flathead and Phillips screwdriver ready. Some models use screws to hold covers in place. Pliers help with stubborn clips or pins.
Consider buying a belt installation tool. It’s a simple plastic lever that helps thread the new belt. It costs a few dollars and saves a lot of frustration.
Keep a notepad and your phone nearby. Take a picture of the old belt’s routing before you remove it. This photo will be your guide for the new one.
Step-by-Step: How to Change Belt on Craftsman Snowblower
First, lift and secure the snowblower. Use a floor jack under the frame. Place sturdy blocks under it so it can’t fall.
Remove the belt cover or shields. These are usually held by a few bolts or clips. Set the bolts aside in a cup so you don’t lose them.
Now you can see the old belt. Take that photo I mentioned. Get a clear shot of how it wraps around each pulley.
Loosen the tension on the belt. Many models have an idler pulley with a spring. Use your pliers to pull back the spring and release the tension.
Slip the old, worn belt off the pulleys. You might need to turn a pulley by hand to get enough slack. Work it off carefully without forcing anything.
This is the core of how to change belt on Craftsman snowblower. Compare the old and new belts side by side. They should be the same width and length.
Route the new belt exactly like the old one. Follow your photo. Start with the largest pulley first, then work to the smaller ones.
You must get the belt into the correct grooves. Don’t let it twist. It should sit flat and straight in each pulley channel.
Re-engage the tensioner spring or adjuster. This puts the proper tightness on the new belt. You should be able to press the belt down about half an inch in the middle of the longest span.
Turn the auger or drive wheels by hand. Watch the belt track on the pulleys. It should run smoothly without jumping off.
Reinstall the belt cover or shields. Tighten all bolts securely. Don’t over-tighten the screws into the plastic housing.
Lower the snowblower off the blocks. Reconnect the spark plug wire. You are now ready for a test run.
Common Mistakes to Avoid
The biggest mistake is getting the wrong belt. It might look close, but a slight size difference causes slipping or damage. Always use the OEM part number.
People often forget to disconnect the spark plug. This seems like a small step. But an accidental engine start during repair can cause serious injury.
Don’t force the belt onto the pulleys. If it seems too tight, check your routing. Forcing it can stretch the belt or damage the pulley bearings.
Avoid over-tightening the new belt. A belt that’s too tight puts extra strain on the engine and auger bearings. It will wear out much faster.
Never skip the hand-turn test before starting the engine. This checks that everything moves freely. It’s your last chance to catch a routing error.
Don’t throw away the old belt right away. Keep it until the new one is installed and working. You might need it for reference if you get confused.
How to Adjust the Belt Tension Correctly
Proper tension is not a guess. It’s a specific feel you can learn. A loose belt will slip, and a tight belt will burn out bearings.
On most Craftsman models, a spring-loaded idler pulley sets the tension. When you release the spring, it automatically pulls to the right spot.
For manual adjustment models, there is a bolt you loosen. You then move the pulley bracket and re-tighten. Your manual shows this adjustment point.
Use the “half-inch deflection” rule. Press down on the belt midway between two pulleys. It should move down about half an inch with moderate pressure.
If you have a belt tension gauge, use it. The SAE has standards for V-belt tension. But the hand test is fine for most DIYers.
Run the engine for a minute after adjusting. Listen for any high-pitched squealing. That sound often means the belt is still too loose.
Check the tension again after the first real use. A new belt can stretch a tiny bit initially. A quick re-check ensures it stays perfect.
When to Change the Belt (Not Just When It Breaks)
Don’t wait for a complete failure. A worn belt can leave you stuck during a storm. Look for these warning signs each season.
Cracks on the inside of the belt are a clear sign. These are called “weather checks.” They mean the rubber is drying out and losing strength.
If the snowblower slips or lacks power, check the belt. A glazed, shiny surface on the belt sides means it’s slipping. The friction has polished it smooth.
Listen for squealing when you engage the auger. This noise often comes from a loose or worn belt. It’s crying out for replacement.
Check for missing chunks or frayed edges. These are signs of advanced wear. The belt could snap at any moment under load.
Follow the maintenance schedule in your manual. Most belts last 3-5 seasons with normal use. Proactive replacement is cheaper than a repair call during a blizzard.
Keep a spare belt in your garage. When you learn how to change belt on Craftsman snowblower, buying a spare is smart. You’ll be ready for next time.
Tips for an Easier Belt Change
Spray a little silicone lubricant on the pulleys. This helps the new belt slide into place. Don’t use grease or oil, as it can damage the rubber.
Label bolts with painter’s tape as you remove them. Write “cover bolt” or “idler bolt” on the tape. This helps during reassembly.
If a pulley is hard to turn, replace it now. A seized pulley will destroy your new belt fast. Consumer Reports notes that addressing all worn parts saves money long-term.
Clean the pulley grooves while the belt is off. Use a rag and some degreaser. Built-up grime can make the new belt track poorly.
Work in good light. A headlamp or shop light is a huge help. You need to see the routing clearly in the tight spaces.
If you get stuck, search for your model number online. Sites like Sears Parts Direct often have exploded diagrams. These show exactly how everything fits together.
Safety Precautions You Must Follow
Disconnect the spark plug wire first. Wrap the end of the wire with tape. This ensures it can’t accidentally touch the plug terminal.
Make sure the snowblower is stable on the blocks or jack stands. It’s heavy and can tip. Never crawl under a machine supported only by a jack.
Wear safety glasses. Springs can slip, and bits of old belt can flick up. Protecting your eyes is a simple, smart habit.
Keep your hands clear of moving parts during the test. Use a stick to turn pulleys by hand if needed. The auger blades are sharp.
Let the engine cool completely before starting. A hot engine and exhaust can cause burns. This is especially important if you were just using the machine.
Read the safety section of your owner’s manual. The Consumer Product Safety Commission (CPSC) stresses this for all power equipment. Each model might have specific warnings.
Troubleshooting After the Belt Change
The engine runs but the auger doesn’t turn? The belt is likely off a pulley or broken. Shut off the engine and check your routing again.
A loud squealing noise means the belt is loose. Re-check the tension. The idler spring may not have engaged fully.
If the new belt seems too short, double-check the part number. Did you route it around all the correct pulleys? An extra idler pulley is easy to miss.
The belt keeps jumping off the pulleys. This often means a pulley is bent or out of alignment. Look for a pulley that wobbles when you spin it.
Excessive vibration points to a problem. The belt might be defective or the wrong type. A linked V-belt must be used if your model specifies it.
When in doubt, consult a professional. A local small engine shop can give quick advice. Knowing how to change belt on Craftsman snowblower includes knowing when to ask for help.
Frequently Asked Questions
How often should I change the belt on my Craftsman snowblower?
Change it every 3 to 5 years with normal use. Check it each fall for cracks or wear. A damaged belt should be replaced right away.
Can I use any V-belt to replace my snowblower belt?
No, you need the exact size and type. The part number from your model is the only sure way. A mismatch can cause poor performance or damage.
Do I need to remove the auger to change the belt?
Usually not. Most belts are accessible by removing covers. Some older two-stage models might require auger removal, but it’s rare.
