| 摘要 |
<p>In an internal combustion engine 3 comprising a crank case 30 being divided left and right into a left case 30L and a- right case 30R which are joined in the direction of a crankshaft 31, and a balancer shaft 81 extending in parallel with the crankshaft 31 and being pivotally supported across the left case 30L and the right case 30R, left and right bearings 47L, 47R of the crankshaft 31 and left and right bearings 84C, 84R of the balancer shaft 81 are mounted on each of the left and right cases 30L, 30R from the side of a joining surface 30a between the left and right cases 30L, 30R. Left and right balancer weights 86L, 86R are fitted onto both ends of the balancer shaft 81 in a removable fashion from the balancer shaft 81.The crankshaft 31 and the balancer shaft 81 are clamped between the left and right cases 30L, 30R so as to be held and fixed in position. [Selected drawing] FIG.</p> |
