http://unixfi.co/uk/MotorizedBicycle/48ccEdition.html
Walkthrough Cheats All Hints and Commands
Commands:
up down inventory i n w e s in out open install complete
Walkthrough :
Buy enginekit.
Open mailbox.
Open enginekit in the garage.
install Motor
install Petroltank
install Carburetor
install Wires
install Exhaust
install Sprocket Chain
Complete enginekit
If you leave the driveway without a motorized bike game over.
Cheat Codes
Open Mailbox. Every time earns 1$ so you can buy another Enginekit on the INternet.
Install Enginekit. Without opening it and you have a motorized bike and another enginekit that you can install later.