Ryobi RY48ZTR75 Service Manual page 11

TROUBLESHOOTING: DETAILED CONTINUED
8. If the mower will not drive
a. Make sure the seat switch
b. Test the angular transducers. Replace if necessary.
c. Test the neutral switches. Replace if necessary.
d. Test the brake switch. Replace if necessary.
e. If the mower still will not drive,
f. Test the drive motors
9. Test the blade operation by pulling up on the PTO switch
a. Make sure the seat switch
b. Test the primary and secondary
c. Test the primary blade
d. If the mower blades still will not operate,
10. If the mower works except for the headlights,
Confidential & Proprietary – Property of Techtronic Power Equipment – DO NOT COPY or DISCLOSE
is functional and activated.
test the Drive Motor
and Hall sensors, replace as necessary
is functional and activated.
motors. Replace as a pair if found bad
and secondary blade controllers. Replace as a pair if found bad.
replace the Drive motor controllers
test the headlight switch
controllers. Replace if necessary.
(same as step 8e above)
and headlights. Replace as necessary