This is from the XPC (Collin Proline 21).....don't think there are any differences for a regular 800XP.
Engine Computer, Rudder Bias ………….........................Checked
AIRCRAFT STOPPED AND PARKING BRAKE SET
DO NOT PERFORM ON THE RWY.
- Both engine computers and rudder bias systems must be operative.
- With the thrust levers at idle, check LH and RH thrust reverser ARM
annunciators are illuminated.
Engine Computer, Rudder Bias ………….........................Checked
- Select the engine computers to OFF or OVSPD PROT one at a time
while observing engine limitations.
Be prepared to select AUTO or to close the HP cock if engine control
is lost or any abnormal response is noted.
- Check that ENG 1 CMPTER and ENG 2 CMPTER annunciators
illuminate.
-Advance the RH thrust lever to indicate approximately 80% N2.
(If needed, the thrust may be increased to approximately 75% N1)
- Select the RUDDER BIAS switches to ON and then OFF in turn;
observe that the RH rudder pedal moves forward with each ON
selection.
- Select both RUDDER BIAS switches to ON, then LH T/R lever to
deploy.
- Check rudder bias is inhibited, LH UNLCK and REVRS annunciators
illuminate.
MWS REVERSER annunciator does not illuminate.
- LH T/R lever to stow.
Check that the rudder bias is felt, LH UNLK and REVRS annunciators
are extinguished
and the LH ARM annunciator illuminates.
- Repeat the above procedure for the LH engine, noting that now the
left rudder pedal moves forward with each rudder bias selection.
- Select the RUDDER BIAS switches to ON and guarded; observe that
the RUDDER BIAS annunciator light extinguishes.
- Select the engine computers to AUTO. Observe that the ENG 1
CMPTR and
ENG 2 CMPTR annunciators extinguish.
Enjoy