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replace the idler pulley or the carriage motor.
Pulley
Figure 18. Carriage motor. (Viewed from right side)
6. Inspect the following parts associated with the carriage drive belt for wear, damage, binds, and correct
adjustment and installation.
v Carriage drive belt idler pulley must be free-turning. Slide the carriage throughout the full travel, and
ensure that the pulley turns.
v Carriage drive belt clamp must properly mesh with the belt teeth, and be fastened tightly. Replace
the clamp if the screw will not tighten.
v Carriage drive belt tension must be correct (see Carriage drive belt).
Carriage
Motor
Chapter 5. Removals, service checks and adjustments
164