KAYO MOTOR TD125, Service Manual

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The measurement procedure is as follows:
1.Set up the whole motorcycle, so that the rear wheel is completely
suspended.
2.Select a fixed point on the side of the rear mud-guard and mark it
as "Point 1".
3.Measure the distance from "Point 1" to the center of the rear axle
and record it as "A1".
4.Lower the motorcycle from the rack
Measure distance from center of rear wheel to rear fender under no load
The measurement procedure is as follows:
1.Righten the motorcycle so that the center of the tire is
perpendicular to the ground.
2.Measure the distance from the center of the rear axle of the
motorcycle to "Point 1" and record it as "A2".
3.Use side stand to support the whole motorcycle
4.Calculate the difference between "A1" and "A2" and denote it as
"D1".
The D1 value of 21 TD125 is shown as follows,
D1
TD125 10
～
34mm
Measure distance from center of rear wheel to rear fender in riding condition
The measurement procedure is as follows:
1.The rider rides the motorcycle (engine does not start)
2.Righten the motorcycle so that the center of the tire is
perpendicular to the ground.
3.Measure the distance from the center of the rear axle of the
motorcycle to "point 1" and record it as "A3".
4.The rider uses side stand to support the motorcycle and leave the
seat cushion.
Calculate the difference between "A1" and "A2" and denote it as
"D2".
The D2 value of 21 TD125 is shown as follows,
D2
TD125 50
～
100mm
If "D2" measured by the customer is lower than the factory value,
the spring preload can be lowered appropriately; If measured "D2"
is higher than the factory value, the spring preload can be adjusted
higher; If "D2" is far less than the factory value, it is necessary to
replace the spring with a lower hardness; If "D2" is much greater
than the factory value, it is necessary to replace the spring with a
greater hardness.
Adjust the spring preload of the rear shock