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Mercury 40 Service Manual

Mercury 40
599 pages
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CARBURETOR
90-828631R3 MARCH 1999 Page 3B-15
Fast Idle Adjustment
NOTE: Fast idle adjustment is required when fast idle exceeds 1500 rpm or engine stalls
during a cold start.
1. Remove the link rods (a & b) and loosen fast idle screw (c).
2. Loosen idle stop screw (d) until the screw is free from the lever.
3. Tighten the idle stop screw (d) until the bypass hole is half visible.
4. Tighten the idle stop screw (d) to the specified number of turns from the graph.
5. Connect the link rods (a &b).
6. Hold the fast idle lever (f) to the roller (g) and secure the fast idle screw (c).
e
a
d
c
f
g
b
a-Link Rod
b-Link Rod
c-Fast Idle Screw
d-Idle Stop Screw
e-Bypass Hole (Reference View Only)
f-Fast Idle Lever
g-Roller
Turns
Temp. (°C)

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Mercury 40 Specifications

General IconGeneral
Horsepower40 hp
Starting SystemElectric
SteeringRemote
Fuel Induction SystemEFI (Electronic Fuel Injection)
Shaft Length20"
Full Throttle RPM Range6000

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