Answer
Nov 03, 2025 - 09:56 AM
- A and B both include three pulleys (for crankshaft, water pump, and alternator) but differ in belt size (39″ for A vs. 40″ for B) to match specific engine layouts. C includes only two pulleys plus a spacer (because it is for raw water cooled engines without a separate fresh water pump pulley) and uses shorter 32″ belts. These variations ensure proper fit for different Yanmar 3GM and 2GM submodels.
