How to Tell if Mower Deck Spindle is Bad
- Uneven grass after cutting.
- Bent and broken parts.
- Squealing sounds.
- Loud buzzing noise and vibration.
- Spindle failing to heat up.
Roughly, starting out about as tight as an alternator belt, maybe an inch of play side to side So, tight but not super tight, hard to explain it just takes practice.
Turn the adjustment bolt on the side, top or bottom of the pulley counterclockwise with the ratchet and socket until the accessory belt is loose enough to remove. Tighten the tensioner pulley by turning the adjustment bolt clockwise with the ratchet and socket until the belt is tight.
One of the most notable benefits of Kevlar tensile cords is that they provide better shock and impact resistance than steel or other materials. Kevlar also has a higher tensile modulus (lower stretch) than other tensile cord types, so Kevlar-reinforced belts experience less elongation over time.
Turn the adjustment bolt on the side, top or bottom of the pulley counterclockwise with the ratchet and socket until the accessory belt is loose enough to remove. Tighten the tensioner pulley by turning the adjustment bolt clockwise with the ratchet and socket until the belt is tight.
My experience is deck belts last about 5 years and on my 200 series I had to replace the deck to engine belt about one per year! Always keeps a spare handy!
There's no definite amount of time that a mower belt is supposed to last, but increased mower use shortens the interval in which a belt needs replacement. Simply put, more use equals more wear. Additionally, faulty belts or mechanical failures like a seized pulley can make lawn mower belts break prematurely.
We have already replaced the belt and it did not help. The smell of the smoke is that of rubber burning from the belt just not sure what is causing it. If the belt is actually smoking then something is causing it to slip or rubbing on it. Wear on the outer flat side of the belt indicates a problem with an idler pulley.
There are a number of different reasons that belts can turn over in the pulleys. It can either be caused by a problem within the machine or improper installation by the operator. If you have a machine that has an automatic tensioner and you still have slack then you may have the wrong belt.
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.
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. Stretching slackens a belt, so that it slips on the pulleys.
Place the mower blade onto the driveshaft and secure it with the nut, socket and ratchet. Place the mower onto all four wheels and then tighten the tension screw until the belt is tight. Place the belt cover onto the mower deck and secure it with the screws and your screwdriver.
How To Measure A V-Belt Pulley
- The first thing you want to do is measure the outside diameter (O.D) of the pulley.
- Next, we'll measure the pitch diameter (P.D), this is the measurement that represents the diameter of the belt it's self as it rides in the pulley.
- Next measure the wall thickness of the pulley.
How to Tighten the Belt on a Poulan Riding Lawn Mower
- Roll the Poulan riding mower onto a flat surface.
- Lift the cover for the engine and remove the spark plug, using a socket wrench.
- Lower the mower deck.
- Push in on the idler pulley underneath the engine.
- Remove the bolt from the housing on the deck.
- Push in on the pulley on the deck belt and pull out on the belt.
Adjust the deck by loosening the hex lock nut on the deck hanger rod. Raise the front of the deck by tightening the inner hex nut. Loosen the inner hex nut to lower the front of the deck. Once the deck is at the proper level, tighten the lock nut to secure.
