Ho 2 Sensor - Briggs & Stratton VANGUARD M490000 Repair Manual

E. Set DVOM to read volts DC.
F. Turn Ignition ON, Engine OFF.
G. Observe voltage on DVOM.
H. With throttle resting against the dead idle screw,
rotate the TPS until the output voltage is 0.73 +/-
0.02 volts.
Alternately tighten two TPS screws to 10-16 lb-in
I.
(1-2 Nm).
J. See Throttle Body, Installation, steps 5-9.
25. Reset ECM memory as follows:
A. Turn Ignition OFF for at least 10 seconds.
B. Cycle Ignition ON and OFF five times in five
seconds.
C. End cycle in the OFF position and wait at least 10
seconds.
D. Turn Ignition ON to reset ECM memory to the
5
default values.
HO Sensor
2
Removal
1. Remove access cover. See Access Cover/Blower
Housing, Removal, steps 1-3.
2. See Air Cleaner Assembly, Removal.
3. Disconnect HO sensor connector.
2
4. Rotate sensor body hex counter-clockwise to release
sensor from muffler.
Installation
1. Rotate sensor body hex clockwise to secure sensor
to muffler. Tighten to 146-173 lb-in (16-19 Nm).
2. Connect HO sensor connector.
2
3. See Air Cleaner Assembly, Installation.
4. Install access cover. See Access Cover/Blower
Housing, Installation, steps 7-10.
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