Replace spark plugs - AP15.10-P-1580L

ENGINE 137.970 in MODELS 215.378, 220.178 /878 

ENGINE 275.950 in MODELS 215.376, 220.176 

ENGINE 275.951 in MODEL 230.476 

ENGINE 275.980 in MODELS 215.379, 220.179 

ENGINE 275.981 in MODEL 230.479 

ENGINE 275.954 in MODEL 230.477 

Shown on Engine 137.970 (left bank of cylinders) 

Fig 1: Identifying Spark Plug - Shown On Engine 137.970

	Remove/install
	Risk of death  caused by contact with parts conducting high voltages.	Do not touch parts which conduct high voltages. Persons with electronic implants (e.g. pacemakers) must not work on the ignition system.	AS15.10-Z-0001-01A
	Notes on avoiding damage to ignition system	ENGINE 137, 275, 285	AH15.10-P-0002-01L
1	Remove ECI ignition module, right cylinder bank (N92/1) and ECI ignition module, left cylinder bank (N92/2)
	Remove/install ignition coil module	Engine 137.970 in model 215.378, 220.178/878	AR15.12-P-1100L
		Engine 275.950 in model 215.376, 220.176	AR15.12-P-1100LA
		Engine 275.951 in model 230.476
		Engine 275.954 in model 230.477
		Engine 275.980 in model 215.379, 220.179
		Engine 275.981 in model 230.479
2	Remove spark plugs (R4)	Engine 137	*BA15.10-P-1001-01A
		Engine 275	*BA15.10-P-1001-01C
		Spark plug wrench	Figure
3	Install in the reverse order

SPARK PLUGS

SPARK PLUGS

Fig 2: Identifying Spark Plug Wrench (112 589 01 09 00)