depends on what the bases are like , if both the same condition just swap engines , the drives are harder too do . or just look and have a scratch think about it . you could get a book to explain the drive system too , but might be easier to take off the wheels , remove the drive gear and use it as a push mower
. you could get a book to explain the drive system too , but might be easier to take off the wheels , remove the drive gear and use it as a push mower 
