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I am replacing a B&S 121s02-0130-f1. Most everyone I talked with today indicated that it was on backorder. One company indicated that they had the f2 model of the same motor and that it was the replacement for the f1. Can anyone confirm that this would be correct, or should I be concerned that there is a physical difference between the engines?

this engine is off of a Toro TimeMaster 30

thanks

According to my Briggs dealer site the F2 is the replacement engine for the F1. I wouldn't be surprised if you receive the F2 engine instead of the F1