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8-9

LOWR

Lower unit

Checking the dog clutch

1. Check the dog clutch, shift plunger, and

spring. Replace if cracked or worn.

Checking the propeller shaft housing

1. Check the propeller shaft housing.

Replace if cracked or damaged.

Checking the reverse gear

1. Check the teeth and dogs of the reverse

gear. Replace if cracked or worn.

Assembling the propeller shaft

assembly

1. Install the spring a into the hole in the

propeller shaft b.

2. Push the spring a, and then install the

dog clutch c.

Assembling the propeller shaft

housing assembly

Do not reuse a bearing, oil seal, or O-ring,

always replace it with a new one.

1. Install new oil seals a.

TIP:

Install an oil seal halfway into the propeller

shaft housing, and then install the other oil

seal.

2. Install a new ball bearing d.

3. Install a new O-ring e.

TIP:

Face the identification mark a on the ball

bearing toward the reverse gear.

Propeller shaft runout:

0.02 mm (0.001 in)

Driver rod L3 b: 90890-06652

Needle bearing attachment c:

90890-06615

Driver rod LS f: 90890-06606

Bearing outer race attachment g:

90890-06628

Yamaha F6C Service Manual

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