If it is an '88 then it would be 4 stroke, shaft drive, electric start (no backup starter thought), 5 speed auto clutch with reverse, full suspention (not very good but ok), 2wd. The '85 was the model without suspention. I have had two 1985's and they have held up well. The engine is the same as the one that is used in the 200 and 225 three wheelers. I know a guy that has a 1987 and he has not had any problems with it.
-Andrew
1984 Yamaha YT 60 Tri Zinger(current project)
1983 Yamaha YTM 200 (rear suspension kit)..... long term project
2004 BMW R1150R
1972 Honda CT 70
2007 Lifan 110