RE: mk17 starting problems
If the engine are wet of fuel and the compression feel hard to turn, back off compression screw 1/2-1 turn and close the main needle, then 2-3 turn out. Start the engine until it will fire. If the engine are running a short time and the compression feel reduced (cause the flooded fuel are burned away), turn compression screw 1/4-1/2 and start again with some drops fuel in exhaust port..
When the engine are running in slow rpm, adjust the compression screw until the engine are in max speed and lean out main needle until the engine begins drop speed, then richen 1/2-3/4 turn back.
Jens Eirik