Mercury Outboard 

Models 1977-79 

Model

Horse-power

Serial Number Range

Year

Merc 40

4

9141799 thru 9172805

1977

9172806 thru 9208225

1978

9208226 thru 9256980

1979

Merc 45

4.5

4597262 thru 4869517

1977

4869518 thru 5270783

1978

5270784 thru 5595531

1979

Merc 75

7.5

4691222 thru 4851692

1977

4851693 thru 5226934

1978

5226935 thru 5524659

1979

Merc 110

9.8

4605112 thru 4839253

1977

4839254 thru 5206549

1978

5206550 thru 5541279

1979

Merc 200

20

4580037 thru 4819248

1977

4819249 thru 5183392

1978

5183393 thru 5606491

1979

Merc 25SS

20+

Serial Numbers Not Available

1977

1978

1979

Merc 402

40

4564002 thru 4860102

1977

4860103 thru 5174088

1978

5174089 thru 5556229

1979

Merc 500

50

4576237 thru 4962055

1977

4962056 thru 5193258

1978

5193259 thru 5531629

1979

Merc 700

70

4571652 thru 4825248

1977

4825249 thru 5128279

1978

5128280 thru 5579016

1979

Merc 850

85

4590512 thru 4831998

1977

Merc 1150

115

4567952 thru 4855152

1977

4855153 thru 5168573

1978

5168574 thru 5600966

1979

Merc 1500 (Inline 6)

150

4602012 thru 4868997

1977

Merc 1500XS

155

4567952 thru 4855152

1977

(Inline 6)

4868648 thru 5168573

1978

Merc 1750

175

4563802 thru 4838073

1977

4838074 thru 5180108

1978

5180109 thru 5488751

1979

Merc 800

80

4831999 thru 5141096

1978

5141097 thru 5582561

1979

Merc 900

90

4845301 thru 5160323

1978

5160324 thru 5594656

1979

Merc 1400

140

4865678 thru 5189787 5189788 thru 5625107

1978

1979

Merc 1500

150

4868998 thru 5129479

1978

(V-6)

5129480 thru 5503246

1979

Merc 2000

200

4839034 thru 5158928

1978

5158929 thru 5464485

1979