Civic Sedan L4-1590cc 1.6L SOHC (D16A6) MFI (1990)
Synchronizer Hub: Service and Repair
3RD/4TH Shift Fork to Shift Arm B - Clearance
1. Measure the clearance between the 3rd/4th shift fork and shift arm B.
Standard: 0.2 - 0.5 mm (0.008 - 0.020 in.)
Service Limit: 0.62 mm (0.0244 in.)
2. If the clearance exceeds the service limit, measure the width of the shift arm B.
Standard: 12.9 - 13.0 mm (0.508 - 0.512 in.)
3. Replace the shift arm B if the width is outside the standard value with a new one.