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tighten the happy screw.
i think its the second 22mm locknut from above. untighten it, and adjust the adjusting rod with a screwdriver and retighten.
Lotsa smoke means you're blowing lots of money into the sky. some black smoke under 1000 rpm isnt a problem at all, and some slightly grey smoke under 1500 rpm neither.
Terry
How did you end up with a non-turbo 7745 ?
I thought the 7745 was a turbo version of the 7245. apart from it having hydrostatic steering that was about the only difference.
Dave