115 is a little low, but should be sufficient to get it running
There is 4 marks on the flywheel - 3 marks close together and counter clockwise from the 3 marks, the TDC mark - with the flywheel turning clockwise; the first mark is at 27 degrees BTC, the next mark is 25 degrees and the third mark is 23 degrees - the next mark is TDC - paint the TDC mark white and the 25 degree mark yellow or vice versa.
Without looking at the flywheel, put the engine on TDC - insert a soda straw into the spark plug hole and rotate the engine by hand until the straw stops rising indicating the piston is at TDC - the flywheel key should be on the top side of the crankshaft in a parallel line with the cylinder and the TDC mark should be visible in the inspection hole.
Spark should occur at 25 (plus or minus 2 degrees) degrees before TDC @ 3000 RPM - for starting, the spark should occur any time before TDC - the ignition curve is electronically controlled and maximum advance may be greater or less depending on the design of the components.
From the manual:
1. The ignition timing check hole is in the starter recoil/magneto housing. Remove the check plug.
NOTE: The ignition timing marks are stamped on the outside of the flywheel. Ignition timing must be inspected
with the engine at room temperature (68°F I 20° C).
2. With the transmission in neutral, start the engine and set engine speed to 3000 +1- 200 RPM (3500 ± 200 RPM for ES33PF (330 cc), EH42PL (425), EHSOPL (500)).
3. Direct the timing light at the ignition timing check hole and check the ignition timing. NOTE: Do not allow the engine to warm up. The timing will retard approximately 2° when the engine is warm.
*Actual advance point may vary by several hundred RPM either above or below 3000. Use the point of maximum
advance when checking ignition timing.
I hope you find this useful.
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