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Engine Electrical (K20C1: Type-R)

Item  Measurement  Qualification  Standard or New  Service Limit 
Ignition coil Firing order   1-3-4-2
Spark plug Gap   0.7-0.8 mm (0.028-0.031 in) -
Ignition timing At idle Check the red mark In neutral 2 +/-2 deg. ATDC (conversion value by HDS: -2 +/-2 deg.)
Drive belt Tension   Auto-tensioner
Alternator Brush length   10.5 mm (0.413 in) 1.5 mm (0.059 in)
Starter Commutator mica depth   0.40-0.50 mm (0.0157-0.0197 in) 0.15 mm (0.0059 in)
Commutator runout   0.02 mm (0.0008 in) max. 0.05 mm (0.0020 in)
Commutator O.D.   28.0-28.1 mm (1.102-1.106 in) 27.5 mm (1.083 in)
Brush length   11.1-11.5 mm (0.437-0.453 in) 4.3 mm (0.169 in)