Page 47 - MerCruiser_JMLCatalog_Flipbook
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MerCruiser
COMPLETE GEARCASE ASSEMBLY
Alpha One Gen II MC-1 / R / MR & Alpha One
No. 18300 No. 18100
OEM: 1623-815822A53 OEM: 1623-8951A43
Serial No. OD469859 & Up
Standard Rotation Ratio: 13:21
Ratio: 13:21
EMPTY GEAR HOUSINGS
Alpha One Gen II Alpha One & MR
No. 28000 No. 18000
OEM: 1623-815822A30, 1623-815822A36 OEM: 1623-8951A37
Serial No. OD469859-OK999999
Forward Gear Tapered Roller Forward Gear Tapered Roller
Bearing Bore Size: Bearing Bore Size:
3.4985-3.500 in. I.D. 3.4985-3.5000 in. I.D.
(88.86-88.90 mm) (88.86-88.90 mm)
www.jmlmarine.com
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