Yamaha F90D User Manual

6D81G11
6-8
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Removing the lower unit
1. Drain the gear oil.
2. Set the gear shift to the neutral position,
and place a block of wood between the
anti-cavitation plate and propeller to keep
the propeller from turning, and then
remove the propeller nut and propeller.
WARNING
• Do not hold the propeller with your
hands when loosening or tightening it.
• Be sure to disconnect the battery leads
from the battery and the clip from the
engine stop lanyard switch.
• Put a block of wood between the anti-
cavitation plate and propeller to keep
the propeller from turning.
3. Disconnect the speedometer hose
1
.
4. Mark the trim tab
2
at the area shown,
and then remove it.
5. Loosen the bolts (nuts), and then remove
the lower unit from the upper case.
È
X-transom model
S6D86020
2
1
Lower unit

Yamaha F90D Specifications

General

Fuel Induction System	Electronic Fuel Injection (EFI)
Starting System	Electric
Alternator Output at W.O.T.	35 Amp
Lubrication System	Wet Sump
Full Throttle RPM Range	5000 - 6000 rpm
Steering	Remote
Trim Method	Power Trim and Tilt
Exhaust	Through Propeller
Engine Type	4-Stroke
Displacement	1832 cc
Max Output	90 hp
Recommended Fuel	Regular Unleaded (Minimum Pump Octane 87)
Recommended Engine Oil	Yamalube 4M
Ignition System	TCI
Cooling System	Water Cooled
Shaft Length	L (20"), X (25")