JB Conversions 16-1207 HD Super Short SYE Kit for the NP241C - Manual (Page 9)

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FIG: 14 FIG:14A
16) Remove the retaining ring holding the main drive sprocket
assembly in place. Remove the sprocket assembly from the shaft
(Fig.15).
FIG: 15
17) Inspect the inside of the main drive sprocket for the presence of
needle bearings. If the bearings are present, remove them with a
press. The deletion of these bearings is per OEM design. After 1995,
the mfg. (New Venture Gear) adopted this design and it performs fine
(Fig.16,17,18).