1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 285Get this manual
22TECHNICAL FEATURES DIFFERENTIAL COOLING SYSTEM
DC-COl SYSTEM (FOREMAN)
01 FFE RE NTIAL
This vehicle uses Full Time Wheel-Drive which improves off-road driveability and ability to ascend slopesThe front drive system is equipped with differential gears to improve turning ability by reducing the steering load