
-201-
-201-
Maintenance Section
Maintenance Section
Replace Oxygen Sensor
Replace Oxygen Sensor
(G420F(E)/G424F(E) Engine Only)
(G420F(E)/G424F(E) Engine Only)
G420F(E) Engine
G420F(E) Engine
G424F(E) Engine
G424F(E) Engine
When indicated by MIL, replace oxygen seasor on
When indicated by MIL, replace oxygen seasor on
the exhaust manifold and o
the exhaust manifold and oxygen sensor on muffler
xygen sensor on muffler
assembly.
assembly.
1.
1.
Stop engine and wait until the exhaust pipe and
Stop engine and wait until the exhaust pipe and
exhaust pipe is cooled.
exhaust pipe is cooled.
4.
4.
Assemble new oxygen sensor
Assemble new oxygen sensor
Tightening torque : 45 N•m (32
Tightening torque : 45 N•m (32.5 lb•ft)
.5 lb•ft)
5.
5.
Connect the electrical connector of oxygen
Connect the electrical connector of oxygen
sensor
sensor
WARNING
WARNING
When assembling the filters, check the arrow
When assembling the filters, check the arrow
mark on the filter surface.
mark on the filter surface.
The arrow mark position is same as fuel flow
The arrow mark position is same as fuel flow
direction.
direction.
Replace Spark Plugs (G420F(E)
Replace Spark Plugs (G420F(E)
Engine Only)
Engine Only)
1.
1.
Disconnect Battery Cables.
Disconnect Battery Cables.
2.
2.
Remove the ignition wiring harness.
Remove the ignition wiring harness.
3.
3.
Remove the ignition coil assy.
Remove the ignition coil assy.
4.
4.
Remove spark plugs.
Remove spark plugs.
5.
5.
Gap the new spark plugs to the
Gap the new spark plugs to the proper
proper
specifications.
specifications.
G420F(E) Engine : 0.7 ~ 0.8 mm
G420F(E) Engine : 0.7 ~ 0.8 mm
6.
6.
Apply anti-seize compound to the spark plug
Apply anti-seize compound to the spark plug
threads and install.
threads and install.
G420F(E) Engine : 25
G420F(E) Engine : 25 N•m (18 Ib•ft)
N•m (18 Ib•ft)
WARNING
WARNING
DO NOT OVERTIGHTEN THE SPARK PLUGS.
DO NOT OVERTIGHTEN THE SPARK PLUGS.
1
1
2
2
3
3
Summary of Contents for G20E-5
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