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14
IMPELLER SELECTION CHART
FOR MODELS 12-S, 12-TD, AT-309, TJ-309, SD-309, & J120-AT
H.P.
9.5
9.25
AA
A
B
C
150
2900
3050
3200
3600
3800
4050
200
3200
3350
3500
4000
4200
4450
250
3450
3600
3700
4300
4500
4800
300
3800
3950
4050
4550
4800
5100
350
4050
4200
4300
4750
5100
5350
400
4250
4400
4500
5050
5300
5600
450
4450
4600
4700
5250
5500
5850
500
4650
4800
4950
5400
5700
6050
550
4800
4950
5100
5550
5850
N/A
*
THESE RPM VALUES MAY VARY ACCORDING TO HOW YOUR BOAT ALLOWS
THE PUMP TO LOAD
HORSE POWER REQUIREMENTS ARE AT THE PUMP SHAFT