Mariner Mercury 175 JET User Manual

3B-12 - FUEL SYSTEMS 90-824052R3 JUNE 2002
WMH 21,22,23,25,26,28 Carburetor Specifications
Carburetor Year Engine Venturi Main Jet Progres-
sion Jet
Idle Air Jet Back Draft
Vent Jet
WMH 21
1A–2–3
1993 200 1.312
1,2 = .066
3,4,5,6=.064
.050 .046 .096
WMH 22
1–2–3
1993 175 1.312 .064 .040 .050 .098
WMH 23
1–2–3
1993 150 1.312 .060 .050 .054 .094
WMH 25
1–2–3
1993 XR-6
MAG III
1.000 .054 .050 .050 .086
WMH 26
1–2–3
1993 XR-4
MAG II
1.312 .062 .050 .046 .090
WMH 28
1–2–3
1993 135 1.312 .062 .070 .056 NONE
NOTE: All idle mixture settings are 1-1/2 turns ± 1/4
turn from a lightly seated position.
IMPORTANT: If welch plugs and air trim screws
must be removed for carburetor cleaning, count
number of turns air screw is turned in until
seated, then remove. Apply Loctite 271 and set
air screws to the same position (approx. 1-1/4
turns).
Top View
b
a
g
f
c
d
e
50756
a - Fuel Mixture Adjustment
b - Screw Cap (two)
c - Welch Plug (two)
d - Air Trim Screw (two) - Apply Loctite 271
e - Idle Air Bleed Jet
f - Thermal Air Valve Air Inlet
g - Emulsion Tube

Mariner Mercury 175 JET Specifications

General

Brand	Mariner Mercury
Model	175 JET
Category	Engine
Language	English