Scooter Troubleshooting Guide
Belt Falls Off The Rear
Wheel Or Motor
Belt Falls Off Rear Wheel
When a drive belt falls off the motor or the rear wheel but it stays on
the scooter the belt is usually out of alignment. To align an electric scooter
belt use two wrenches to loosen and tighten the axle nuts to avoid damage to the
1- Loosen the hardware that attaches the brake to the scooter frame.
2- Loosen the rear axle nuts just a little.
3- Adjust the
rear wheel until the perfect balance of belt tension
and belt alignment are obtained.
4- Tighten the axle bolts.
And Falls Off
When a belt breaks and falls off the scooter it is usually caused
by excessive belt tension, pebbles or twigs getting stuck between the
belt or cog teeth, or from the belt being worn-out. It is common for electric
scooter belts to break and fall off and get lost down the road. If your
belt is missing there are several ways to determine which belt size you
To Select The Right Size Drive
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
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 electrical wire firmly around the scooters drive
belt cogs positioned in place where the drive belt would be. Mark the wires with a pen where they intersect. The length between the pen marks indicates the approximate belt length that is
required. The sprocket's peak to peak teeth distance and the sprocket's teeth width measurements
will also need to be taken.
Length of belts loop in mm
Peak to peak teeth distance in mm
(1 number with "M" on the end)
Width in mm
Drive Belt Teeth Spacing
The distance from peak to peak of two adjacent belt teeth is 3mm or slightly under 1/8" apart.
The distance from peak to peak of two adjacent belt teeth is 5mm or slightly over 3/16" apart.
Millimeters Conversion Formula
Inches x 25.4
The conversion calculator below will calculate this
(example: 24" x 25.4 = 609.59mm (a 610mm belt match)
This conversion calculator only accepts inch decimals
and not inch fractions. Use the conversion chart above to convert inch
fractions into inch decimals before entering figure into