I have a Viking MB505 serial 53270844 lawn mower and have managed to replace the piston rings, but do not know how to set up the crank shaft with the cam wheel and shaft to set the timing.

John Meegan, March 2010

hi, your crankshaft and your camshaft has a mark on the side of the drive gears that has to be inline to time these up, this should do the trick, when you first took these items out ,the engine should have been on top dead center i think and should be the same when you put them back. watch out when you put back for the lube system is in ok, hope it works

davie1973, March 2010

There will be a dot on the gear fitted to the crankshaft, and two dots on the cam shaft, just set the one dot between the two dots.

Husqvarna man, March 2010