I just bought a used classic model and i had to replace the engine to transmission belt and the engine to deck belt. Before I replaced the belts the operating rpm was 3750 sitting, 3720 to 3740 with the deck engaged, and stayed above 3700 when cutting at full speed with moderate grass height. With the new belts on, sitting rpm is 3710 to 3700, deck engaged 3640 to 3690, and when mowing it drops below 3640 to 3570. It is not the world's fastest mower anymore. The engine bogs down through moderate grass height.
I am going to loosen the engine mounts tomorrow to relieve some belt tension. Does this sound like it could be the problem.
Thanks, Bill
I am going to loosen the engine mounts tomorrow to relieve some belt tension. Does this sound like it could be the problem.
Thanks, Bill