Master Specifications - Mercury 45 Jet 50-55 Service Manual

Master Specifications

Model 45 Jet/50/55 Marathon-Seapro/60/60 Marathon-Seapro/60 Bigfoot
HORSEPOWER
(KW)
OUTBOARD
WEIGHT
CYLINDER
BLOCK
STROKE
CYLINDER
BORE
PISTON
REEDS
GEAR
HOUSING
FUEL
SYSTEM
1-2 - GENERAL INFORMATION and SPECIFICATIONS
Model 50
Model 55
Model 60
Model 45 Jet
Electric Start (ELPTO)
(ELO)
Manual Start (ML)
Type
Displacement
Length
Diameter (Std)
Taper/Out of Round Maximum
Bore Type
Piston Type
Standard
0.015 in. (0.381mm) Oversize
0.030 in. (0.762) Oversize
Reed Stand 0pen (Max.)
Reed Stop (Max.)
Reed Thickness
– 45 Jet/50/60
– 55
50/55/60
Gear Ratio
Gearcase Capacity
Forward Gear - No. of Teeth
Pinion Gear - No. of Teeth
Pinion Height
Forward Gear Backlash
Water Pressure
– @ Idle
– @ WOT
60 SeaPro/Marathon, 60 Bigfoot
Gear Ratio
Gearcase Capacity
Forward Gear - No. of Teeth-Type
Pinion Gear - No. of Teeth-Type
Pinion Height
Forward Gear Backlash
Water Pressure @ RPM
Fuel
Recommended Gasoline
Recommended Oil
Gasoline/Oil Ratio
Fuel Pressure – @ Idle
– @ WOT
50 (37)
55 (41)
60 (45)
60 (45)
217.0 lbs. (98.4kg)
213.0 lbs. (96.6kg)
213.0 lbs. (96.6kg)
Two-Stoke Cycle – Loop Charged
51.8 cu. in. (849cc)
2.520 in. (64.008mm)
2.955 in. (75.057mm)
0.003 in. (0.076mm)
Cast Iron
Aluminum
2.950 in. (74.93 mm)
2.965 in. (75.31 mm)
2.980 in. (75.69 mm)
0.020 in. (0.50mm)
Not Adjustable
0.008 in. (0.203mm)
0.010 in. (0.254mm)
1.64:1
11.5 fl. oz. (340ml)
23
14
0.025 in. (0.64mm)
0.013 in. – 0.019 in.
(0.33mm – 0.48mm)
1 – 3 PSI
7 – 12 PSI
2.3:1
22.5 fl. oz. (655ml)
30
13
0.025 in. (0.64mm)
0.012 in. to 0.019 in. (0.30mm to 0.48mm)
10 to 15 PSI (69 to 103 kPa) @ 5250 RPM
Pre-Mixed Gasoline and Oil
Unleaded 87 Octane Minimum
Quicksilver TC-W II or TC-W3 2 Cycle
Outboard Oil
50:1 (25:1 Break-In)
3-1/2 PSI
6 PSI
90-817643R1 DECEMBER 1996