RX7 2RTR- 1308cc 1.3L FI (1987)
Synchronizer Ring: All Technical Service Bulletins
M/T - Hard Shift to 2ND Gear After Cold Start
Bulletin No.
004/92
Issued
7/7/92
Revised
Category
J
Applicable Model/s
MX-5 Miata
RX-7 Non-Turbo
Subject
HARD SHIFT TO 2ND GEAR AFTER COLD START
DESCRIPTION
Hard shifting into second gear before the vehicle has had sufficient time to warm up may be caused by insufficient clearance between 2nd gear
synchronizer ring and the 1-2 clutch hub. Design changes have been made to the 2nd gear synchronizer ring and clutch hub sleeve to correct this problem
since April 1, 1991.
If you experience hard shifting into 2nd gear after a cold start with an RX-7 (non-turbo) or Miata produced prior to April 1, 1991, replace the 2nd gear
synchronizer ring and 1-2 clutch sleeve (or 1-2 clutch hub set) with redesigned ones. Refer to Section J of the workshop manual for installation
procedures.
VIN OF PRODUCTION-CHANGE
MX-5 Miata
JM1NA351*M*232720
April 1, 1991
RX-7 (Non-Turbo)
JM1FC3***M0906971
April 1, 1991
