Even in slightly cooler temps (Iowa) my Super Z (926980) is hard starting. Usually starts right up with a jump. I remember a prior post about a starter assist relay kit but I can't find the post or a part number. Other suggestions? Help!
Manuals click on COMMERCIAL & INDUSTRIAL, scroll down to super z and your model number, then general service manual starting at page 7.1. I would first remove battery & take to auto parts store, etc. and have them load test battery letting you know if battery is good or bad, you may want to fully charge battery before having it tested this will save you time as well as them having to charge before testing, should be no cost to you for load test plus eliminating battery as problem.