Specifications - Mercury 40 Service Manual

Specifications

HORSEPOWER
(kW)
OUTBOARD WEIGHT
CYLINDER BLOCK
STROKE
CYLINDER BORE
PISTON
REEDS
FUEL SYSTEM
90-852572R1 JANUARY 1998
Models 40/50/55/60
Model 40
Model 50
Model 55
Model 60
Manual
40/50 ML
55 ML
Electric
40/50 ELPTO
40/50 ELO
60 ELPTO
60 ELO
Type
Displacement
Length
Diameter
Taper/Out of Round Maximum
Bore Type
Type
Standard Diameter
0.015 in. (0.381 mm) Oversize
0.030 in. (0.762 mm) Oversize
Reed Stand Open (Max.)
Reed Stop (Max.)
40
50/55/60
Reed Thickness
Recommended Gasoline
Recommended Oil
Break-in Gasoline/Oil Ratio
Manual Start Models
Electric Start Models
After Break-in Gasoline/Oil Ratio
Manual Start Models
Electric Start Models
Fuel Pressure
@ Idle
@ W.O.T.
40 (29.8)
50 (37.3)
55 (41.0)
60 (44.7)
205 lbs. (93.0 kg)
220 lbs. (99.8 kg)
204 lbs. (92.5 kg)
200 lbs. (90.7 kg)
219 lbs. (99.3 kg)
215 lbs. (97.5 kg)
3 Cylinder-2 Cycle-Loop Charged
59 cu. in. (967 cc)
2.796 in. (71 mm)
2.993 in. (76 mm)
0.003 in. (0.08 mm)
Cast Iron
Aluminum
2.988 in. (75.895 mm)
3.003 in. (76.276 mm)
3.018 in. (76.657 mm)
0.020 in. (0.50 mm)
0.090 in. (2.286 mm)
Not Adjustable
0.010 in. (0.254 mm)
Unleaded-87 Octane Minimum
Quicksilver TC-WII or TC-W3
2 Cycle Outboard Oil
Pre-mixed Gasoline and Oil 25:1
50:1 (In Fuel Tank)
Pre-mixed Gasoline and Oil 50:1
Straight Gasoline
3.5 PSI (24 kPa)
6.0 PSI (41 kPa)
IMPORTANT INFORMATION - 1A-1