Mercury 300 XS OptiMax Manual page 94

CHECKING POWER TRIM FLUID (THREE-RAM TRIM SYSTEMS)
1. Tilt outboard to the full up position and engage the tilt support lock.
a - Tilt support lock
Tube Ref. No.
114
2. Remove fill cap and check fluid level. The fluid level should be even with
the bottom of the fill hole. Add fluid if required.
MAINTENANCE
a
Description
Power Trim and
Steering Fluid
Where Used
Fill hole
88
or47-1
Part Number
92‑802880A1
eng