Chrysler 100, 115 and 140 HP Outboard Motors Service Manual, OB 3439, Page 93Get this manual
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NOTE If belt deflects more than 1 4" (6.25 mm) it will be too loose and premature belt breakage will occurIf belt deflects less than 3 16" (4 .7 mm), it may cause binding of towershaft linkage andl or