Yamaha F150A, Service Manual

Page: 315 / 493

8-8
Lower unit (regular rotation model, X-transom model)
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Removing the lower unit
• Make sure to disconnect the battery
cables from the battery, and remove the
clip from the engine shut-off switch.
• When removing the lower unit with the
power unit installed, make sure to sus-
pend the outboard motor. Otherwise, the
outboard motor could fall suddenly and
result in severe injuries.
• When loosening or tightening the pro-
peller nut, do not hold the propeller
using your hands.
1. Drain the gear oil.
2. Remove the propeller and trim tab. See
steps 2–6 in “Removing the lower unit”
(8-3).
3. Remove the lower case mounting bolts
“1” and “2”, and then remove the lower
unit “3” and extension “4”.
TIP:
When disassembling the lower unit, measure
the backlash before disassembly. See “Mea-
suring the forward gear backlash and reverse
gear backlash before disassembly” (8-35).
Disassembling the propeller (SDS
propeller)
See “Disassembling the propeller (SDS pro-
peller)” (8-3).
Checking the propeller
See “Checking the propeller” (8-3).
Checking the lower unit anode
See “Checking the lower unit anode” (8-3).
Assembling the propeller (SDS
propeller)
See “Assembling the propeller (SDS propel-
ler)” (8-4).
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