1996 K301 replacement engine
I've a '96 K301 spec 47504. I thought all K301's had the flat section on crank counter weights. Mine are round. One thick, one thin. Both valves have rotators. Style D Mahle piston. Has balance gears. Fully adjustable Walbro WHG carb A few questions.
1. Any significance to the round counterweights vs flat ?
2.Are valve rotators meant to keep seats cleaner ?
3.How long has Kohler used Mahle pistons ?
4.Has anyone kept the balance gears ?
5.Is the K301 the most out of balance single K engine ?
Chris
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1968 104 , service replacement '96 K301, 42" deck
1997 Scotts 42502X8 , repowered with '96 B&S 18hp TwinII , 42" deck
2007 LA130,21hp Intek v-twin, 48" deck
 As you slide down the banister of Life, may the splinters point in the right direction . 
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