You will need to have mended the power plant to do this. Go to Lavender Town, and in the Radio Tower will be a person who will give you a special radio card. Then, go to the entrance of Diglett's Cave. There should be a Snorlax outside the cave, asleep. Go to your radio, using the Pokegear. Manually tune the radio (use your stylus and slide the dot) to the very top of the radar. This should play Poke Flute music. This will wake up Snorlax, and he will battle you. Make sure you have some heavy balls, as they work like a treat on Snorlax. Hope this helped.
Lushbob
go into radio tower and talk to the guy with the brown hat. he will give you more radio channels. after that go to the snorlax and open the radio channel in your pokegear. then open the top middle channel, it will say pokeflute, click on it. then press the a button and the snorlax will wake up.
You need to go to lavender town and go in the radio tower,then go to the man in the brown suit and he will upgrade your pokegear,then go to vermillion city and stand next to snorlax and go to your pokegear and touch the picture that shows the radio and go to the top of the circle until you see pokeflute and then exit out of that and press A next to snorlax.If this didn t work then there is something wrong.
fire red/leaf green:pokeflute Heartgold/Soulsilver-pokeflue on the pokegear
The PokeFlute is used to awaken Snorlax.
In Pokemon heartgold, if you are in the kanto region, you can use the pokeflute. Just be right beside snorlax, go to pokegear, go to radio, and move the circle to the very top of the radio graph
Play poke flute on Radio
Pikachu Lapras Charizard Venasuar Blastoise Snorlax
Route 11 - it should be obvious exactly where...
Pikachu Lapras Snorlax
Pikachu, Charizard, Blastoise, Venusaur, Snorlax, Lapras.
Snorlax does not learn hypnosis.
You don't have to capture it, you just have to move it out of the way so if you faint it then it's not a problem cause the path is no longer blocked
Give it a full incense and breed it to get a Munchlax egg.
If you catch a Munchlax or Snorlax, they will have one. Otherwise, you can't get one.