Hi All, so there are 3 chains in the Victa Imperial. 2 of them have nylon block tensioners .... no problem there. However the chain to the drive roller does not. I have a photocopy of a technical note saying that in order to tension this drive roller chain you have to loosen the clutch assembly and move it to gain tension. No problem ... I have the relevant 2 prong tool to loosen. Problem is this clutch assembly threads into the side of the mower base and is fixed, so it cant be moved ... so how do I tension this chain ? Dugg