Yamaha F150A, Service Manual

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Drive shaft and lower case (regular rotation model)
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2. Remove the needle bearings from the
forward gear.
Disassembling the lower case
• Use heat-resistant gloves. Otherwise,
burns could result.
• To prevent fires, remove any flammable
substances, such as gasoline and oil,
around the working area.
• Keep good ventilation while working.
1. Remove the water inlet covers “1” and
“2”.
2. Heat the area of the lower case where
the taper roller bearing outer race is to be
installed using a gas torch, and then
remove the taper roller bearing outer
race “1” and forward gear shims “2”.
When heating the lower case, heat the
entire installation area evenly. Otherwise,
the paint on the lower case could be
burned.
3. Remove the needle bearing “1”.
Checking the pinion
1. Check the teeth of the pinion. Replace if
cracked or worn.
Checking the forward gear
1. Check the teeth and dogs of the forward
gear. Replace if cracked or worn.
Checking the drive shaft
1. Check the drive shaft. Replace if dam-
aged or worn.
2. Measure the drive shaft runout.
Needle bearing attachment “2”:
90890-06608
Bearing separator “3”: 90890-06534
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Ball bearing attachment “2”:
90890-06636
Driver rod LL “3”: 90890-06605
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