something isn't right, group 24 1000 CCA is very strong, that's about 1200 MCA. Most group 24s are 850 cca/1000 mca. nd most deep cycles are group 27s, and generally max out at 550/650. Check again on that battery. 1000 XXA should spin your motor over fine. Normally on a deep cycle, the discharge rater is lower so the recharge rate will be also, with a 1000 CCA that's a pretty steep discharge rate, so you should be fine on recharging with that Yamaha/
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