> Mercury Marine [Updated: Oct. 29, 2026] > Outboard > 2 Stroke Carb > 4.5 (1 CYL.) > ARCHIVE CAT 69972 > MERC 4.5

MERC 4.5
SERIAL NUMBER

45, 4.5 (1 CYL.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USA 4107220 THRU 5595531 (1977)
45, 4.5 (1 CYL.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CAN 7045758 THRU 7147237
45, 4.5 (1 CYL.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8026540 THRU 8068064
45, 4.5 (1 CYL.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BEL 9072179 THRU 9258280

TOP COWL DIAGRAM  arch-69972-4

1
191- 5231A4 TOP COWL ASSEMBLY
UNITED STATES 4597261 AND BELOW
AUSTRALIA 8044349 AND BELOW
BELGIUM 9139799 AND BELOW
CANADA 7091997 AND BELOW

191- 6189A2 TOP COWL ASSEMBLY
UNITED STATES 4597262 AND UP
AUSTRALIA 8044350 AND UP
BELGIUM 9139800 AND UP
CANADA 7091998 AND UP

191-5231A4 , 191-6189A2,5231A4 , 6189A2,

MERCURY DECALS

- 37- 70645A75 DECAL SET - SERIAL GROUP #3 (1975)
- 37- 73919A76 DECAL SET - SERIAL GROUP #7 (1976)
- 37- 76900A77 DECAL SET - SERIAL GROUP #12 (1977)
- 37- 78615A78 DECAL SET - SERIAL GROUP #16 (1978)
- 37- 86414A79 DECAL SET - SERIAL GROUP #15 (1979)

1979 MERCURY 4.5 HP (MERC 45) - DECAL SET 86414A79

1979 Mercury 4.5 hp (Merc 45) decal set 86414A79 (serial group #15) - blue speckle design with white mercury lettering: mercury side decals (2), one with the 4.5 box; pinstripes (4), black and silver; front plate with the Mercury oval; 45 decals (2); 4.5 H.P. decal; STOP, R - N - F and CHOKE - FUEL decals.

86414A79 - 1979 Mercury 4.5 hp decal set at GarzonStudio

37-86414A79, 86414A79, Merc 45, Mercury 4.5 hp 1979

LATER MERC 4.5 - PARTS CATALOG 90-90694

> Mercury Marine [Updated: Oct. 27, 2026] > Outboard > 2 Stroke Carb > 4.5 HP 1 CYL > [5595532 THRU 0A809600] - USA - Cat.# 90-90694 (Canada 7147238, Australia 8068065, Belgium 9258281 and up)

TOP COWL AND STARTER ASSEMBLY

DIAGRAM 38675

• 1) 7668A2 - TOP COWL ASSEMBLY
• 5) 89096 - TRIM COVER TOP COWL

7668A2, 89096

MISCELLANEOUS PARTS/ACCESSORIES - DECAL SETS

• 89321A80 - DECAL SET - (BLUE) MERC 4.5
• 43154A84 - DECAL SET - (BROWN) MERC 4.5
• 13477A86 - DECAL SET - (MERCURY 4)
• 86667A86 - DECAL SET - (SAILPOWER)

37-89321A80, 37-43154A84, 37-13477A86, 37-86667A86, 89321A80, 43154A84, 13477A86, 86667A86

OTHER DECALS
4 66394A1 HANDLE ASSEMBLY, THROTTLE SHAFT (throttle decal)

Serial Number: 4759641
1977 MERCURY 45, 4.5 HP (1 CYL.) 2 Stroke Carb

(MERCURY MARINE)
MERCURY MARINE
DIVISION OF BRUNSWICK CORP.
FOND DU LAC, WIS. 54935 U.S.A.
- OPERATION -
TROLL
1. USE RECOMMENDED GASOLINE AND OILS.
2-OPEN TANK VENT.
3. CONNECT FUEL LINE AND PRIME WITH BULB.
4. PLACE SHIFT LEVER IN NEUTRAL.
5. PLACE THROTTLE IN START POSITION.
   SERIAL NO. [ 4759641 ]
6. PULL STARTER ROPE, IF MOTOR IS COLD USE CHOKE.
7. PRESS STOP BUTTON OR CHOKE TO STOP.
8. SHIFT GEARS ONLY WITH MOTOR RUNNING.
9. DISCONNECT FUEL LINE WHEN NOT IN USE