Good afternoon In answer to your questions in the Data – Specs section The valve clearance : 5/10th of a mm and the lift should be 8.5mm max for both inlet and exhaust. Engine oil: 2 litres approximately – A high quality mineral oil is recommended. To determine the correct oil level. There are two brass quarter turn taps on the front left of the engine just above the sump. The taps are a slightly different heights. Open the lower tap, oil must come out. Open the higher tap, oil must not come out. If the oil level is too low. Close the lower tap, leave the higher tap open and pour oil into the engine until it starts to come out of the higher tap. Stop pouting and close the tap. I would suggest to use a 20 – 40 multigrade oil Ignition Timing: Turn the flywheel until the line marked A is under the point of the marker on the back of the engine block. This is the ignition point if both inlet and outlet valve of cylinder n°1 are closed. At this point, the contact breaker points should just start to open. At full opening the points should have a gap of 3/10th of a mm The spark plugs gap should be set at 4/10th of a mm Gearbox: the correct level is 4 cm from the lower edge of the cover. Mineral oil, viscosity unspecified Back Axle: The correct oil level is just below the horizontal centre line. Same mineral oil as gearbox.
