Sierra 18-2358 Mercruiser 1.5:1 Upper Unit Gear Repair Kit
Sierra Upper Unit Gear Repair Kit for Mercruiser Gen II applications s/n range up to 0K999999 only.
- Ratios: 1.50:1 (1.47:1)
- Teeth: 20-22
- Mercruiser Stern Drive
Mercruiser Stern Drive
- Alpha One Gen II
- s/n 0D469859 thru 0K999999
Sierra Break-In Instructions for 18-2358 Mercruiser Upper Unit Gear Repair Kit
All gear sets require a break-in period. Instructions for 10 hour break-in period is as follows:
- Avoid full throttle starts.
- DO NOT operate at constant speeds for extended periods.
- DO NOT exceed 75& of full throttle during the first 5 hours of operation. During the next 5 hours, full throttle operation is permissible for brief periods.
- Shift into forward gear a minimum of 10 times during break-in, with moderate engine speed after each shift.
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