Following Rotax instructions, purged the engine with Shell Sport plus 4 oil. Seemed to work out exactly like the plans specified. Removed cylinder valve covers in order to check the rocker arms. Did this on cyl 1 and 2 and both rocker arms were not as firm as they are suppose to. Since I did not run the engine as recommended, I will have to wait until later on to check the rocker arms again. Replaced both covers but will have to check the manual for proper torque values.
