Circle J Belts Replacement Lawn Mower Belts by J. Thomas
circlejbeltOur “Made-To-OEM-Specs” Replacement Belts are specially designed for lawn equipment applications. Circle J® Belts are oil and heat resistant and are engineered to withstand twisting, clutching actions and heavy loads. Circle J® Belts manufactured by Dayco or Goodyear and are guaranteed to meet your expectations.


CircleJ Belts are Quality OEM Replacement Lawn Mower Belts for all major manufacturers of Commercial RIder and Walk Behinnd Mowers including the following brand names: Bad Boy  Bobcat   Bunton   Dixie Chopper   Encore Exmark  Evverride    F.D. Kees  Ferris    Grasshopper   Gravely   Great Dane   Husqvarna   Hustler   Jacobsen   John Deere   Lesco   Scag   Snapper   Snapper/Kees  Snapper ZTR   Toro   Walker   Wright Stander   Yazoo

Lawn Mower Replacement Belt Tips

circlejlogoBelt Wear
Why would a new belt snap soon after installing it on your machine? First, check your machine. The problems could lie within! If there seems to be nothing wrong with your mower, check the following list of common belt failure problems to determine the belt problem and what may
be the cause.

Hairline Cracks
If you notice that your belt has hairline cracks, your belt
is dried out and old. These belts should not be used in this condition. You will just be borrowing trouble. Replace the belt with a new one.

Large Cracks
Deep cracks can cause to much flexibility. This leads to heat build up and premature failure. These cracks can
be caused by using the belt on a pulley that is too small. Notched belts are available for small diameter pulleys.

Worn, Gouged or Peeling Away
If the belt is worn, gouged, or peeling away you may have a problem with your pulleys. Check the pulley grooves for roughness or if the pulley is bent or out of alignment.
If nothing appears to be wrong then you could have a defective pulley.

Belt Snaps While In Use
If a belt snaps it most likely means that there is excessive torque on the belt. This is usually caused by to high of RPM'S when the belt is engaged. If this is not the case, check for any mechanical obstructions in the drive system.

Brittle Belts
A new belt that has become brittle is a condition caused by extreme high temperatures. You should check the
pulley bearings and other mechanical devices for cause
of high friction.

Softening
Oil and grease on a belt can cause the belt's rubber
compounds to soften and separate from the reinforcing cords that hold the belt together. The belt will first slip, then fail altogether.

Glazing
Glazing is caused by a belt that is slipping resulting in over heating or poor performance. The more the belt
slips, the more glazing will be built up on the surface of the belt. The more the belt is glazed, the more it will slip. If the glazing is light, tighten the belt.