1 – Check The Outside Of The Old Belt for Numbers And Letters These numbers and letters may be placed together (5355M15), or they may have dashes and or forward slashes between them (535-5M/15), or they may have the first 5 digits only (535-5M or 5M535). Other variations are also possible depending upon the belt manufacturer.

2 – Check The Belts Listed By Scooter Make And Model Page

3 – If The Belt Does Not Have Its Size Printed On It a) Measure the length of the belts loop b) Measure the distance from peak to peak of two adjacent belt teeth c) Measure the width of belt

4 – If The Belt Is Missing Or Lost Wrap a small length of insulated electrical wire firmly around the scooters drive belt cogs positioned in place where the drive belt would be. Now mark the wires with a pen where they intersect. The length between the pen marks indicates the approximate belt length that is needed. The sprockets peak to peak teeth distance and the sprockets teeth width measurements will also need to be measured.

Length of belts loop in mm (3 numbers)

Peak to peak teeth distance in mm (1 number with “M” on the end)

Width in mm (2 numbers)

447

3M

12

Drive Belt Teeth Spacing

3mm Teeth: The distance from peak to peak of two adjacent belt teeth is 3mm or slightly under 1/8″ apart. 5mm Teeth: The distance from peak to peak of two adjacent belt teeth is 5mm or slightly over 3/16″ apart.