There is no problem in changing the size of the engine rated horsepower, as long as it is an increase. The tricky part is to assure that the shaft size and length match. The engine mounting system must be the same, and obviously everything must connect and fit like it did for the original engine.
A larger engine should give you additional power, but will likely also consume more gasoline.
the starter is attached to the motor under the flywheel. look for the battery cable going from the solonoid to the motor and that will be the starter
Yes
unnderneath the lawnmower there should be 4 main bolts near each corner of the motor theese need to come out
Let it run out of gas. or put a kill switch coming from the condenser and ground it to the body of the lawnmower.......the contact with the frame should ground out the motor thus killing the motor
4.4 Horsepower
In some 454's 330hp, in other 454's with bigger heads 390hp
903 horsepower. 727 horsepower fom a gas motor and 176 from an elecric motor.
6.5
8 Horsepower
about 52 horsepower
yes yes
no. not good idea