KYMCO MXU 500i 2018 Service Information page 582

5.Engine MXU 700i
3 -
• If tooth contact is found to be correct (example 2) complete the installation.
• If tooth contact is found to be incorrect (examples 1 and 3), the shim thickness between
the drive bevel gear and driven bevel gear must be changed and the tooth contact
rechecked until correct.
Drive Bevel Gear Shim
Tooth Contact
Adjustment
Contact at tooth top (1) Increase shim thickness
Contact at tooth root
Reduce shim thickness
(3)
Make sure to check the backlash after the tooth contact has been adjusted. The tooth
contact shim adjustment may have changed the backlash. Adjust the tooth contact and
backlash until they are both within specification. If the correct tooth contact cannot be
maintained when adjusting the backlash, replace the drive and driven bevel gears.
MXU 500i/700
Driven Bevel Gear Shim
Adjustment
Increase shim thickness
Reduce shim thickness
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