When they use it, Krillin, Yamcha, and Goku each charge their own Kamehameha attacks. Then, they fire them at the same time from three different places to cause great damage to the enemy. It can be used when Krillin, Yamcha, and Goku are all in rage mode, and all use their Kamehameha waves.
The attack is shown in the movie Dragon Ball Z: The Tree of Might, when the three of them use it (along with Tien Shinhan's and Chiaotzu's energy attacks) to attempt to destroy the Tree of Might, to no avail.
In the movie Dragon Ball Z: Lord Slug, Goku and Krillin perform a combo Kamehameha attack against Lord Slug's spaceship while it is approaching the Earth, however, the team attack is not capable of destroying nor stopping it.
The attack is later used by Krillin and Yamcha, alongside Piccolo's Masenko and Tien Shinhan's Ki Blast Cannon, in an attempt to distract Super Perfect Cell long enough for Super Saiyan 2 Gohan's Father-Son Kamehameha to overpower Cell's Solar Kamehameha. Goku, however, is not present for this attack, having sacrificed himself earlier to save the Earth from Cell's self-destruction.
Appearances in games
"One of the Turtle school's secret moves. Burn your foe to a crisp!"
Kamehame Fever was named and is used in the Nintendo DS RPG Dragon Ball Z: Attack of the Saiyans: it is triggered when Krillin, Yamcha, and Goku are in Sparking! mode and use a Kamehameha in the same turn.
Yamcha and Krillin's team Kamehameha attack is called Team Work Kamehameha in the Dragon Ball Z Collectible Card Game.
Yamcha's yellow Kamehameha is his Blast Spark in Battle of Z.