OK - few things - #1 - there is no 1985 Big red 200. It is either a 1985 Big red 250 - or if 1984 or older a 200. the 1984 Big Red had E-Start and reverse - 1983 and 1982 had E start, hi-lo gearbox but no reverse. the 1985 - 1987 250cc Big red have reverse, E-start, and rear suspension.
As for your tire situation - I do not like fix-a-flat - and would suggest getting them tubed. Most ATV tires are tubeless - but you can always put a tube in them.
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