Mercury 30 Service Manual

IIMPORTANT INFORMATION - 1A-190-826148R2 MARCH 1997
General Specifications
Model 30/40
HORSEPOWER
(KW)
Model 30
Model 40
30 (22.4)
40 (29.8)
OUTBOARD
WEIGHT
15 in. (38 cm)
20 in. (51 cm)
22-1/2 in. (57 cm)
156 lbs. (70.7kg)
161 lbs. (73.0kg)
166 lbs. (75.3kg)
CYLINDER
BLOCK
Type
Displacement
Two Cylinder - Two Cycle
39.3 cu. in. (644.4 cc)
STROKE Length 2.796 in. (71 mm)
CYLINDER
BORE
Diameter (Standard)
Diameter [Oversize 0.015 (.381 mm)]
Taper/Out of Round Maximum
Bore Type
Cylinder Finish Hone (I.D.)
2.993 in. (76 mm)
3.007 in. (76.38 mm)
0.003 in. (0.08 mm)
Cast Iron
2.993 in. (76 mm)
CRANKSHAFT Top Main Bearing Journal
Center Main Bearing Journal
Bottom Ball Bearing Journal
Connecting Rod Journal
Runout
1.375 in. (34.93 mm)
1.216 in. (30.89 mm)
1.385 in. (35.17 mm)
1.181 in. (29.99 mm)
0.003 in. (0.076 mm)
CONNECTING
ROD
Piston Pin End (I.D.)
Crankpin End (I.D.)
0.957 in. (24.31 mm)
1.499 in. (38.07 mm)
PISTON Piston Type
O.D. at Skirt (Standard)
O.D. at Skirt [Oversize 0.015 (.381 mm)]
Ring End Gap
Aluminum
2.988 in. (75.90 mm)
3.003 in. (76.28 mm)
0.010 in. - 0.018 in.
(0.25 mm - 0.46 mm)
REEDS Reed Stand Open (Maximum)
Reed Stop -- Model 30
-- Model 40
0.020 in. (0.508 mm)
0.090 in. (2.286 mm)
Not Adjustable
GEAR
HOUSING
Gear Ratio
Gearcase Capacity
Lubricant Type
Forward Gear - No. of Teeth-Type
Pinion Gear - No. of Teeth-Type
Pinion Height
Forward Gear Backlash
Reverse Gear Backlash
Water Pressure
With Thermostat + Poppet
-- @ W.O.T.
-- @ Idle
All Models W/O Thermostat + Poppet
-- @ W.O.T.
-- @ Idle
Poppet Valve Opening 1994-1997
Poppet Valve Opening 1998 & Newer
2.0:1
14.9 oz. (440 mL)
Quicksilver Gear Lube Premium Blend
26 Spiral/Bevel
13 Spiral/Bevel
0.025 in. (0.64 mm)
No Adjustment
No Adjustment
5 -- 7 PSI @ 5000 RPM
0.5 -- 1.5 PSI @ 750 RPM
5 -- 7 PSI @ 5000 RPM
0 -- 1 PSI @ 750 RPM
900-1000 RPM
3000-3500 RPM

Mercury 30 Specifications

General

Brand	Mercury
Model	30
Category	Outboard Motor
Language	English