This manual covers the following basic type or model numbers dependent on age of product: AH520, AH600,AV520, AV600, HSK600, TVS600.

For 2-cycle Tecumseh small engines around 1994. This manual covered many engines under an Old form of Identification which will need to be reviewed as well.

TYPE / SPECIFICATION NUMBER 638-670 1398-1642 and Craftsman 200 Series Models.

This manual covers the following basic type or model numbers dependent on age of product: AH520, AH600,AV520, AV600, HSK600, TVS600.

For 2-cycle Tecumseh small engines around 1994. This manual covered many engines under an Old form of Identification which will need to be reviewed as well.

TYPE / SPECIFICATION NUMBER 638-670 1398-1642 and Craftsman 200 Series Models.