Toro 74312 Operator's Manual

Also see for 74312: Setup instructions Operator's manual Operator's manual Setup instructions

Belt MaintenanceInspecting the BeltsService Interval: Every 40 hours1. Stop the machine and move the speed-controllever to the NEUTRAL position.2. Disengage the PTO, engage the parking brake,shut off the engine, and wait for all moving partsto stop.3. Tilt the hopper up and check the pump and PTOdrive belts for wear, cracking, or contamination.Note: The belts are spring tensioned and noadjustment is necessary unless you replace thebelts.Replacing the PTO Belts1. Stop the machine and move the speed-controllever to the NEUTRAL position.2. Disengage the PTO, engage the parking brake,shut off the engine, and wait for all moving partsto stop.3. With the engine off, engage the PTO lever, thenremove the hairpin cotter and clevis pin at thebottom of the PTO-brake band.4. Rotate the brake band upward and out of theway of the belts keeping clear of the belt drive.5. Disengage the PTO lever.6. Loosen belt guides A and B (Figure 49).7. Remove the belts.8. Route the new belts onto the pulleys as shownin Figure 49.g006836Figure 491. Idler 5. Engine2. Belt guide B 6. Belt guide A3. PTO belt 7. Blower4. Jackshaft9. Engage the PTO lever.10. Rotate the brake band down into the originalposition.11. Install the clevis pin and hairpin cotter to securethe brake band.12. Engage the PTO lever.13. Loosen the jam nuts and adjust the linkage untilthe top of the idler arm is aligned with the bottomof the notch on the tension arm as shown inFigure 50.g006837Figure 501. Tension arm2. Loosen the jam nuts.3. When PTO is engaged, align top of idler arm with bottom ofnotch on tension arm, as shown.4. Idler arm14. Tighten the jam nuts and disengage the PTOlever.15. Engage the PTO lever and check the alignment.16. Check and adjust the belt guides as stated inAdjusting the Belt Guides (page 48).47