Yamaha YFM350 Warrior Owner's manual

INSTRUCTION SUPPLEMENT FOR 1987-
LATER YAMAHA YFM350 WARRIOR
Removing stock carburetor and cables.
1. Remove seat and gas tank. Make sure fuel
petcock is in “off” position.
2. Remove throttle cable paying close attention
to routing, as the new cable(s) will need too
be routed the same.
3. Remove stock carburetor and stock throttle
housing.
Preparing motor for carburetor install
1. Remove stock manifold from cylinder head.
2. Place supplied o’ring into aluminum flange
as pictured in figure 1.
Figure 1.
3. Install aluminum and rubber flange to motor
using supplied bolts. See Figure 2. The
shorter 25mm bolt will need to be placed in
the bottom hole. IMPORTANT NOTE: Install
the aluminum flange with the o’ring towards
the motor and the thick side up.
Figure 2.
Twist Throttle Instructions
1. Install the throttle cables into the supplied
throttle housing and place onto clean
handlebar end.
2. Route throttle cables through frame as stock
cable was routed.
3. Install the pull cable (long shoulder on cable)
into the 4:00 position and the return cable
end into the 1:00 position of the cable
wheel. Secure cables to cable bracket by
replacing end piece and Phillips screw. See
figure 3.
Figure 3.
Thumb Throttle Instructions

NOTE: Modification of the stock thumb
throttle housing will be required in order to
achieve wide open throttle. Figures 4 and 5
will show the mods.
Figure 4.
Mod number one is to remove material on
the outside throttle stop that limits the thumb
lever travel. This may be sufficient to
achieve wide-open throttle.
Figure 5.
The second mod will only be required if the
gold colored cable lever hits the housing
before opening carb wide open. Use a
dremmel tool or similar to remove material
from corner of throttle housing to allow lever
to move further.
Once throttle housing has been properly
modified and thoroughly cleaned, place and
secure back onto handle bar.
1. Thread new throttle cable into housing and
insert cable end into throttle lever.
2. Install cable into cable wheel on carburetor
in the 4:00 position and secure cable into
lower slot on cable bracket by replacing end
piece and Phillips screw. See figure 6.
Figure 6.
Carburetor installation
1. 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.
3. Attach fuel line to carburetor and secure with
clamp.
4. Place carburetor into manifold and air boot.
Tighten clamps with carb sitting as close to
vertical as possible.
5. Install remote idle cable into threaded tab on
top cable bracket. See figure 7. Refer to
main instruction manual for proper
installation and adjustment. Adjust cable
until wide-open throttle is achieved.
Figure 7.

6. Adjust throttle cable to take up the slack.
Note: When throttle cables are properly
adjusted, there should be approx. 1/8” of
free play in the throttle.
7. After throttle cables have been adjusted the
handle bars should be rotated from full right
stop to full left stop while opening and
closing throttle to ensure smooth operation.
Also check to make sure the cables do not
catch or bind on anything, i.e., hand guards,
stabilizers.
8. Install fuel tank and connect fuel line to
petcock and secure with provided pinch
clamp. Refer to figure 1. Do not bolt tank in
place, as minor adjustments may be
necessary.
9. Turn fuel petcock to “on” and check for
leaks.
10. Open throttle 3-5 times to prime accelerator
pump. Do not open throttle any more than
5 times as this may flood engine!!
11. Once pump is primed, If Motor will not fire
open idle cable ½turn and repeat starting
process.
NOTE: If flooding occurs, slowly open
throttle to wide open and hold. With
throttle still open engage starter until
engine fires.
For any questions regarding tuning or
installation of Edelbrock products, please
call our toll free tech line M-F 8:00am-12:
30pm, 1:30pm-5:00pm PST.
877-888-7504 ext.2.
Edelbrock #3011 and #3150 Warrior
Carburetor Specifications
Bore Size: 36mm Tall X 32mm Wide
Needle: 18E @ 12 Clicks
Accelerator Pump Bypass: 2.5 turns out
Alternate Needles: 16E, 20E
Replacement Cable
Thumb #3013
Twist #9337