Specifications

6.21.3 Replacing Upper and Lower Tractors
1. For both upper and lower tractors: slide the square shaft, bearings,
and pulley assemblies onto the tractors from the right side. The four
white dots must be facing forward.
2. Install the E-ring on the left end of each square shaft.
3. Set the right side top and bottom pulley timing marks in alignment
with the timing marks on the right hand side frame.
4. Install the right side timing belt.
5. With the spring on the triangular plate maintaining proper belt
tension, secure the triangular plate by tightening the three cap
screws. Tighten the inner most screw to 5.6 Nm.
6. Ensure that all four sets of belt guides make slight contact with the
belt’s smooth side along its entire surface.
7. Replace all shaft and belt covers.
REMOVAL AND REPLACEMENT PROCEDURES 6–45