Lawn Mower Belt Problem Reference Chart

Belt Reference Chart

This lawn mower belt problem chart is a general guide and is not meant to be all inclusive.  The cause listed below may not be your cause.

Problem Most Likely
Cause
Other
Possible Cause
Cover is worn
Backside idler

Belt rubs the guard
Belt swells, is soft
Too much oil or grease
Belt rides too high
Wrong type of belt
Hot Bearings Too much oil or grease
Poor bearing or shaft worn

Bearing too far from the pulley

Pulleys are damaged

Too much Tension
Wobbling Pulley
Poor bearing or shaft worn

Pulley are damaged

Improper installation of pulley
Cracked underside
Pulleys are damaged

Improper storage, stored too long

Too much heat

Backside idler
Cover splits
Grooves of the pulley dirty
(particles in them)

Insufficient belt on small pulley
Belts excessively vibrate
Belts matched up wrong

Pulleys are damaged

Pulleys are misaligned

Too much tension

Not enough tension

Machine induced impulse
Belts bottom out
Wrong type of belt

Belt has reached the end service
life

Pulleys are damaged
Bushings are cracked
Pulleys are damaged

Improper installation of pulley
Shaft bends
Poor bearing or shaft worn

Bearing too far from pulley

Pulleys are damaged

Too much tension
Damaged tie band
Pulleys are misaligned

Belt rubs the guard

Pulleys are damaged
Belt squeals or slips
Too much oil or grease

Wrong type of belt

Stack is misplaced

Pulleys are damaged

Not enough tension
Belt comes off pulley
Insufficient belt on small pulley

Too much moisture

Grooves of pulley dirty (particles
in them)

Wrong type of belt

Not enough tension

Machine induced impule
Sidewall repeatedly word
Harsh operating conditions

Too much oil or grease

Belts matched up wrong

Too much heat

Pulleys are misaligned

Not enough tension

Belts rub the guard

Stack is misplaced
Repeated breakage
Too much moisture

Grooves of pulley dirty (particles
in them)

Machine induced impulse

Too much tension

Pros Tip: Always unplug your spark plug prior to working on your equipment.

We carry a large selection of Lawn Mower Belts. If you need help finding your Lawn Mower Parts, please complete the Lawn Mower Parts Request Form and we will be happy to assist you.


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-Jack

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Jack Hayes
About Jack Hayes 75 Articles
Jack Hayes is the Head of Internet Marketing at LawnMowerPros and the editor of this blog. You can often find him creating featured articles, DIY guides, custom graphics and much more.