Valido per: Engine 374 in model 688.101/102/103/118/121/123/133/143/157 Engine 374 in model 688.174/176/187/270/272 Engine 374.950 in model 688.177 Engine 374.953 in model 688.156 Engine 374.988 in model 688.156 Engine 374.989 in model 688.177 Engine 374.991 in model 688.156/177 Engine 374.993 in model 688.156 Engine 376 in model 382.010/069, 384.091/098 Engine 376.906 in model 384.003/004/041 Engine 376.922 in model 382.068 Engine 376.941 in model 382.058 Engine 377 in model 695.302
It is not necessary to adjust valve clearance, if the “checking values” are obtained, when performing the checking service. With a suitable wrench, loose counter nut (2) and adjust the clearance valve, working on set screw (1). Tighten the lock-nut (2) to fasten the adjustment bolt (1). Check valve clearance and adjust if necessary.. . . When adjusting valve clearance, use feeler gauge corresponding to the "adjustment values". Valve clearance will be correct when, after tightening the counter-nut (2), a slight resistance is noticed when moving the feeler gauge blade between the rocker arm and the valve stem.
1
Check valve clearance (arrows), with the feeler gauge, between the rocker arm and the valve stem.
