They do, albeit pretty generic ones, printed on one of the flaps you have to open to get in and at the bushes. Occasionally there's even additional printed info on a little slip of paper, i.e. Wishbone bushes to instruct you to get the sleeve welded to the arm.They should put instructions in the box tbh
You'll have a job...unless you really want an envelope filled with Polyurethane ashes.
:clown: