For the 098902-2210-E1 the flywheel starter/nut torque is 55 ft-lbs. It is hard to achieve the proper torque without the starter clutch tool on these if this one has it instead of the nut version but I with being a '99 it will the nut version.
Image provide of the if you have the older style setup.
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https://www.jackssmallengines.com/jacks-parts-lookup/part/briggs-stratton/19244/image/size/150/150[/img]