Grasshog spins but will not cut

SOURCE: my Black and Decker grasshog weedeater does not spin with power

Sounds like you have a broken shaft internally.

SOURCE: My grasshog has no power when it is spinning.

A pluged air filter will cause that. Depends on what altitude you are at, the carb needs to be adjusted per the altitude, see if it runs at a half choke, this tells you if it is getting to much air. The fuel mixture screw should out 3/4 to 1&1/4 turn out from bottom. Also if your oil mixture is to rich it will power out, 50:1 is 3.2oz. to a Gal. of gas. Also dependes on how old the machine is. Might have to go 80:1

SOURCE: Owner's manual 18V cordless Black & Decker Grasshog grass trimmer

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