FMF Q Installation

18033 S. Santa Fe Ave.
Rancho Dominguez, CA 90221-5514
PH: 310-631-4363 FX: 310-900-5699
www.fmfracing.com
[06-05 / #000605]
'03-05 Yamaha YZ/WR250F
The Q
Thank you for purchasing the FMF Q
hours of R & D and testing to insure you receive the highest quality product on the market today.
All FMF's products are developed using the most current design and manufacturing technologies available.
We use only the highest quality materials for function and durability. The Q
aluminum canister with a stainless steel mandrel bent mid-pipe. Hi-Flo modular endcaps are fitted to both ends
and we utilize advanced 3-stage sound absorption packing material.
The Q muffler is specifically engineered to accelerate exhaust flow with less noise and minimal power loss.
TM
Bolt on FMF performance and FEEL THE POWER!
Please read all instructions thoroughly before installation. Failure to follow all installation instructions completely will void any
FMF warranty implied or otherwise. FMF Racing will not be held responsible for problems derived from improper installation and/or improper
usage.
Before you begin installing this product, be sure you are wearing eye protection and gloves. You should have a complete
understanding of how to remove and replace your stock exhaust. Otherwise, you should have it installed by a professional mechanic. Keep all
OEM parts when removing your stock exhaust, as some parts may be necessary to install the FMF exhaust depending on your particular
application.
PARTS SUPPLIED
(1) Q Muffler
(1) Rubber Bracket Sleeve
(1) Aluminum Reducer Sleeve
(1) 8mm x 25mm Bracket Bolt
(1) 6mm x 25mm Aluminum Spacer
(1) Band Clamp
1. Make sure the engine is completely cool prior to installation and the vehicle is in a stable position.
2. Loosen the band clamp connecting the muffler to the header.
3. Remove the OEM bolt that attaches the mid-pipe to the subframe. Keep for later use.
4. While holding the muffler, loosen and remove the OEM muffler mounting bolt.
5. Gently slide the muffler rearward to release it from the header. Spray WD-40 into the muffler-header
junction if it is difficult to remove.
6a. If installing the FMF muffler onto an OEM header, insert the aluminum reducer sleeve into the front
muffler inlet until it is fully seated. Use High Temp Silicone for an improved seal
6b. If installing the FMF muffler onto an FMF header, the aluminum reducer sleeve is not used.
7. Install the rubber sleeve onto the strap bracket so that the rubber is on the inside of the bracket. Make
sure the outer lip is over the bracket edge fully. No rubber should be in the area where the bracket tabs
pinch together.
8. Slide the supplied band clamp onto the the muffler inlet. Do not tighten yet.
9. Using contact cleaner, clean the section of the header where the mid-pipe slips over then lightly coat with
a bead of High Temp Silicone for an improved seal.
S/A Installation
TM
Check out our website at www.fmfracing.com for more information.
P R E - I N S TALLATION
muffler for your Yamaha YZ/WR250F. We have spent countless
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5mm Allen Wrench
6mm Allen Wrench
10mm Wrench
12mm Wrench
Vise Grip Pliers
Contact Cleaner
R E M O V A L
muffler is constructed of an extruded
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T O O L S R E Q U I R E D
WD-40®
High Temp Silicone
OEM = Original Equipment Manufacturer
.