Originally Posted by
beatsal
Yes, it does. Now will try and unblock it.
Trying to understand this:
'When I unscrew the compression screw, it seems as if it is free i.e. when I tighten the screw it reaches a point where cannot tighten further. Now, when I loosen from that point, it is free as if not connected to anything."
When it reaches a point where it cannot tighten further would suggest that it has now contacted the contra? When loosened from that point would suggest that it is now disconnected from contra?
The argument against the above reasoning is that if disconnected from contra, it cannot adjust the compression. So, not sure how to eplain this correctly.
The initial running setting for the contra should be just a few turns down from where the comp screw touches the former. In other words wind the screw until it touches the contra and add a few more turns. Disconnect the fuel. Turn the engine over until the piston is closed. Hold it there. Prime the side of the piston (most of the fuel will run out), turn the engine over twice, flick hard, add more compression in slight increments till it fires. If it doesn't re-prime and add a little more comp. Repeat till it fires and runs out the prime. Reconnect the fuel, with the needle closed and repeat the cycle adding a turn on the needle and priming till it will run off the tank.