The engine ID code is marked on the exhaust side of the crankcase. Cylinder heads that are suitable for use with unleaded fuel are stamped with a letter next to spark plug No. 4.
Engine ID Code Engine Unleaded Head stamp Unleaded Fuel Ignition timing:
LC 1.6 Standard M, MM, N or NN VV carb: 8 BTDC
LS 1.6 Long stroke (Similar to the 2.0 engine block) M, MM, N or NN 2V carb: 6 BTDC
RE 1.8 S or SS 6 BTDC
NE 2.0 Carburettor L, P, PP, R or RR 6 BTDC
NR / N4 / 205 2.0 Fuel injection L, P, PP, R or RR 8 BTDC
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