I've got several "F" engine lawnboy mowers, some say 4 hp, I have one that says 5 hp. Looking up parts on the Toro/Lawnboy site, the piston, rings, con-rod all appear the same part numbers. How did they get different horsepowers?
I've got several "F" engine lawnboy mowers, some say 4 hp, I have one that says 5 hp. Looking up parts on the Toro/Lawnboy site, the piston, rings, con-rod all appear the same part numbers. How did they get different horsepowers?
I've got several "F" engine lawnboy mowers, some say 4 hp, I have one that says 5 hp. Looking up parts on the Toro/Lawnboy site, the piston, rings, con-rod all appear the same part numbers. How did they get different horsepowers?
So, if I need to replace piston and con-rod, I can use generic "F" engine parts, regardless of the horsepower rating printed on the shroud. The horsepower rating was only achieved by different carbs?
The only concern I'd have is quality and I haven't heard a single horror story about non-OEM parts on these mowers.
Well, outside of new rings and gaskets, I was more thinking about taking salvage off an older "F" engine to rebuild the "F" engine on a newer, more delux mower. For example, the connecting rod.
When you change the carb you have to use the crankcase assy that goes with that carb.All about the carburetor. The walbro with choke only were all 4.5 hp. later plastic modular with the primer on the carburetor was 5 hp. the early non compliant with the primer in the shroud plastic carburetor were 4 hp. All are the exact same as far as parts. The only difference in parts is you will see an M with a circle on outboard marine corp. LB with a box was Toro/Lawnboy after the toro takeover. all the same parts.