Recently purchased 1990 trx 350. My problem is I can find almost no reference to this model – as if it never existed. My suspicion is the model is actually a 1989 carried into 1990 year. I am using 1986 to 1989 trx 350 service manual which so far seems pretty close. Can anyone confirm which service manual and model number reference (need to order a starter motor: ha7-620 or ha7-773?) before I start down the wrong path ordering parts

Thanks