Joyner JNSZ800MV Owner's Manual page 22

6. Front Wheel Replacement
Do not disassemble the center castle nuts when you replace the front wheels.
(See Fig. 16) Tighten the nuts after replacing the wheels.
7. Rear Wheel Replacement
Do not disassemble the center castle nuts when you replace the front wheels.
(See Fig. 17) Tighten the nuts after replacing the wheels.
FIGURE 16
FIGURE 17
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