1985 Yamaha TRI-MOTO 175 Service and Repair Manual

Yamaha brought the 1985 Tri-Moto 175 back under the earlier book. LIT-11616-03-20 lists coverage for 1982 and 1985, and the 1985 machine carries model code YT175J.

That shared, non-consecutive coverage is unusual enough to be worth stating plainly: the 1983 model has its own separate volume, so if you are buying for more than one machine, check the codes rather than the model name.

Content is the standard factory arrangement. Inspection and adjustment intervals, engine teardown and reassembly with measurement points and service limits, carburetor and ignition specifications, electrical testing with expected values, and chassis repair through steering, suspension, wheels and brakes. Wiring diagram and troubleshooting sections are included.

Verify YT175J on your frame, keep LIT-11616-03-20 noted, and work from the tables. Everything else on a three-wheeler this old benefits from having the right figures to hand.