Edelbrock Yamaha YZ/WR426 User Manual

Edelbrock For the car

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INSTRUCTION SUPPLEMENT FOR

1998-LATER YAMAHA

YZ/WR400/426/450F

Removing stock carburetor and cables


1. Remove seat and gas tank. Make

sure fuel petcock is in “off”
position.

2. Remove throttle cables paying

close attention to routing, as the
new cables will need too be routed
the same.

3. Remove stock carburetor and stock

throttle cables.

4. Unplug TPS (throttle position

sensor) and tape end off coming
from bike.

5. Remove hot start button and hose

(for externally mounted hot starts
only).

6. Stuff a dry, clean rag into the

intake manifold to keep debris from
entering engine.

NOTE: It may be easier to remove sub-
frame prior to installation.

Installing the Edelbrock Carburetor and

Throttle Cables


1. Install the provided throttle cables into

OEM throttle housing and place back
onto clean handle bar.

2. Remove the rubber carburetor

alignment tabs from the manifold using
a razor blade or sharp cutters. This
should be done with the rag left in the
manifold. Be very careful not to
damage the manifold or your hands
while doing this!!

3. Remove the hex pipe plug from the

carb cap using a 11mm or 7/16 wrench.
Do not discard plug, as it will be
needed later.
Install the metering
adjustment tool included in the
hardware kit. Do not over-tighten as
damage may occur to cap.

4. Install provided fuel line onto fuel inlet

banjo and secure with pinch clamp.

5. Place Edelbrock carburetor into

manifold. Do not tighten clamp yet.

6. Remove the cable bracket end from

cable bracket using #2 phillips.

7. Install pull cable (see Figure 1) end into

the 8:00 position of the cable wheel
and the return cable into the 11:00
position. Secure cables into cable
bracket by replacing end piece and
phillips screw. See figure 2.


Figure 1.

Figure 2.

SPECIAL NOTE: The Edelbrock
Carburetor was designed to be used
without TPS (throttle position sensor).
We recommend the plug be taped off to
keep debris and water from entering.
With the TPS disconnected there is no
damage that can occur to ignition
system.

8. Place provided vinyl cap over brass

barb on cylinder and secure with small
tie-wrap. See figure 3.


Figure 3.


9. Insert aluminum plug into airboot where

hot start button was located. See
figure 4. Secure with oem pinch clamp.

Pull Cable

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