PGO BR-500 - Page 236

NOTE: When the CO percentage is correct and the CO2percentage does not fall within the prescribed values, the
LAMBDA value is notcorrect.
In this case, carefully check the exhaust systemseal.
When the CO percentage is correct and the HCvalue (PPM) is higher than the maximum admissible value, check:
- spark plug
- valve clearance
- timing
- exhaust valve seal
If the controller needs replacement, reset theTPS and preset the trimmer value of the original controller (if available).
In any case, check the CO value again.
NOTE:
When the CO percentage is correct and the CO2 percentage does not fall within the
prescribed values, the LAMBDA value is not correct. In this case, carefully check the exhaust
system seal.
When the CO percentage is correct and the HC value (PPM) is higher than the maximum
admissible value,
check
- spark plug
- valve clearance
- timing
- exhaust valve seal
If the controller needs replacement, reset the TPS and preset the trimmer value of the original
controller (if available).
In any case, check the CO value again.
PGO BR-500 ENGINE
P.9-89
Stepper Motor