12. COOLING SYSTEM GRAND DINK 250 Impeller (Left Hand Threads) Install the impeller onto the water pump shaft. Torque: 9.813.7N-m The impeller has left hand threads. Dowel Pins Install the two dowel pins and a new gasket. Water Pump Cover Install the water pump cover and tighten the 4 bolts. Torque: 7.811.8N-m Bolt 12-14