Mercury 30 Service Manual

IIMPORTANT INFORMATION - 1A-390-826148R2 MARCH 1997
General Specifications
Model 30/40
CARBURETOR
SPECIFICATIONS
Idle RPM
Full Throttle RPM Range
-- Model 30/ 40 Sea Pro/Marathon
-- Model 40
Idle Mixture Screw Adjustment
(Preset - Turns Out)
Float Level
Main Jet
-- 30 Manual (WME-36/36A)/(WME-63)
-- 30 Electric (WME-37/37A)/(WME-64)
-- 40 Manual (WME-38)/(WME-66)
-- 40 Electric (WME-39/39A)/(WME-67)
-- 30 EHO (WME-42/42A)/(WME-65)
700 - 800 RPM
(In Forward Gear)
4500 - 5500 RPM
5000 - 5500 RPM
1-1/2 ± 1/4 (All Models Except 40 MLL)
1-3/4 ± 1/4 (WME-38 Carb on 40 MLL)
9/16 in. (14.29mm)
0.054 in.
0.054 in.
0.066 in.
0.066 in.
0.054 in.
TIMING
SPECIFICATIONS
Models with (S/N-0G59999 & Below)
Idle
Maximum BTDC @ 2500-5500 RPM
3° BTDC ± 3°
(Not Adjustable)
25° ± 3°
(Not Adjustable)
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Idle
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8° BTDC ± 1°
1
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Maximum Spark Advance
8
°
B
T
D
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±
1
°
1 Turn Clockwise After Contacting
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Throttle Plate

Mercury 30 Specifications

General

Horsepower	30 HP
Cylinders	3
Displacement	526 cc
Gear Shift	F-N-R
Fuel Induction System	Electronic Fuel Injection (EFI)
Shaft Length	20 in
Steering	Remote / Tiller