Edelbrock TRX300EX user manual

INSTRUCTION SUPPLEMENT

1993-LATER HONDA

TRX300EX

Removing Stock Carb and Cables

1. Remove seat/fender assembly and fuel

tank.

2. Remove throttle cables paying close
attention to routing.

3. Remove thumb throttle housing if you are
installing a twist throttle.

4. Remove air box.

5. Remove stock carburetor.

6. Stuff a clean rag into intake manifold to

kee p de bris from entering engine.

Preparing machine for carburetor

installation

1. Route the provided throttle cables per

manufacturer’s recommended procedure,
routing them the same as the stock cables.

2. Remove the rubb er alignmen t tabs from
the manifold using a razor blade or cutters.

Be very careful not to damage the intake
manifold!

Thumb Throttle

1. Thread cable into cable housing ob
handle bar and install cable end into throttle
lever. Refer to service manual for assistance
disassembling and reassembling throttle
housing.

2. Attach cable into cable wheel with the
cable end at the 8:00 position of the cable
wheel, then into bracket. Secure by
replacing the cable bracket end and phillips
screw. See Figure 1.

Figure 1.

Twist Throttle

1. Remove stock thumb throttle
housing from handle bar end.

2. Install cables into supplied twist
throttle housing by clamping the end
with the plastic elbows into throttle
housing.

3. Install the pull (see figure 3 for cable

identification), cable end into the 8:00
position and the idle cable end into the
11:00 position on the cable wheel. See

Figure 2.

Figure 2.

Figure 3.

3. Adjust the pull cable to achieve wide-

open throttle. Adjust the idle cable to take
up the slack. When cables are properly

adjusted, there should be approx. 1/8” of
free-play in the throttle.

Edelbrock Carburetor Installation

Pull Cable

1. Using an 11mm or 7/16” wrench, remove
hex plug from carburetor cap. Do not

disc ard, as it may be reinstalled after
all adjustments are made.

2. Install supplied metering adjustment tool
into cap. Do not over-tighten as
damage may occur!!!

3. Install supplied fuel line onto carburetor

fuel inlet and secure with supplied clamp.

4. Install carb into manifold and align as
close to vertical as possible and tighten
manifold clamp.

NOTE: After throttle cables have been
installed, the handlebars should be rotated
from one stop to the o ther, making sure they
operate smoothly throughout the motion. If
the throttle is not smooth check th e cable
adjustment, throttle housing and cable
routing.

5. Install fuel tank and cut fuel line to
prop er

len gth. Install fuel line onto fuel valve
securing line with remaining pinch
clamp.

6. Turn on fuel and check for leaks.

7. Op en throttle 3-5 times until fuel is
dispensed out of squirter. This will
ensure that the accelerator pump is
primed and operational. Onc e fuel is

dispensed, DO NOT continue to pump
throttle as this will flood the engine!

8. Attach air boot to front of carb and secure

with clamp.

NOTE: If flooding occurs, open throttle
wide open while turning over engine until
the engine starts.

If you have any questions concerning
installation or tuning please call our toll free
tech line at 877-888-7504 ext 2.. M-F
8:00am-12: 30pm, 1:30pm-5:00pm PST

Edelbrock #3007 and #3106

Carburetor Specifications

Bore Size: 32mm wide X 34mm tall oval
bore

Needle: K-7 @ 12 clicks

Alternate Ne edles: K-6, K-8

Pump Setting: 21/4 turns out

Replacement Cables: Thumb-#3013
Twist- #9337