Use the ratchet to tighten the small nuts attached to the idler pulley center. Replace the belt keeper rod in its previous position. Attach it with the engine pulley. Replace the drive belt guard and use the screwdriver to attach the screws. via
How do I change the drive belt on my MTD Yard Machine? (video)
How do you change a belt on a yard machine riding lawn mower? (video)
Why does my drive belt keep coming off my riding mower?
The drive belt may come off a riding mower because it is damaged or loose. If broken or worn, the belt can break while the engine runs, and it can fly off at a great velocity, which is highly dangerous. Check the belt for looseness, cracks, fraying or separation from the rest of the assembly, and replace if necessary. via
How do you adjust the belt tension on a MTD lawn mower? (video)
How do you replace a drive belt on a riding lawn mower? (video)
How do you replace a belt on a riding lawn mower? (video)
How do I know if my lawn mower belt is bad?
How do I remove MTD variable speed pulley?
How do I stop my lawn mower belt from slipping? (video)
How do you adjust a tensioner pulley? (video)
What does a drive belt do on a lawn mower?
The ground drive belt connects the engine crankshaft to the transaxle pulley to drive the rear wheels. If the belt breaks, the lawn tractor won't move. If the belt is worn, the lawn tractor moves sluggishly because the belt slips on the pulley. via
How do I adjust the tension on my lawn mower belt? (video)
How do you adjust a belt on a lawn mower?
How do I adjust my MTD mower deck? (video)
How do you replace a drive belt? (video)
What is the difference between a deck belt and drive belt?
deck belts usually last about 1/2 the time a drive belt does they also get more debris around the pulleys and take much more punishment than drive belts. via
How do you change the drive belt on a Huskee riding lawn mower? (video)
What is a deck belt on a lawn mower?
The deck belt on your riding lawn mower connects the crank shaft to the lawn mower blades, causing them to turn. Lower the deck height to the lowest position, lowering the mower deck onto the blocks. Depending on the model, your lawn mower will have either a lever engagement or PTO engagement. via
Do push mowers have belts?
Step 13: Replace the lawn mower belt
Install the new push mower belt through the opening in the deck housing. While pulling the push mower belt from the transmission, slide it over the transmission pulley. Make sure the belt is fully seated in both mower pulleys. via
Do drive belts stretch over time?
Drive belts always stretch a little in use, because of the strains put on them by driving the water pump and generator , as well as the fan itself if it is in the system. Age and continual flexing also cause belts to crack and deteriorate. via
How tight should Lawn Mower drive belt be? (video)
How does a variable speed pulley work?
The variable speed pulley is mounted on a sliding plate, which moves the pulley toward the engine or toward the transmission. As the pulley moves toward the engine, the transmission belt gets tighter. This forces the sliding plate in the variable pulley to squeeze the engine belt. via
How do you remove the pulley from a riding lawn mower? (video)
Can you shrink a lawn mower belt?
OK you can be too tight end result of that belt snaps belts do not shrink nor do they stretch. What happens is a new belt run in the pully and the edges or sides wear down a bit this is normal but it allows the belt to sit deeper into the pully thus giving the illusion it has streched. via
Why is my lawn mower belt so loose?
Fraying accompanies wear and tear, so frayed lawn mower belts are often loose. The component may fall off because the tension is insufficient to keep it on as the mower runs. via
Why does my belt keep slipping off?
Slipping can be the result of a loss of belt tension (or a weak automatic tensioner) or pulley misalignment. When the belt slips off the track, the friction between the belt and accessory drive pulleys causes the belt to overheat. If you hear a high pitched squealing noise, it's probably time for a switch. via
How do I know if my tensioner pulley is bad? (video)
What does a bad tensioner sound like?
When the tensioner or tensioner pulley fails, the loss of tension can cause the belt and pulleys to make high-pitched rattling or chirping noises. If the pulley bearing completely fails, it can also cause a squealing or even a grinding noise. Symptom 2: Knocking or slapping. This can cause a slapping or knocking noise. via