INSTALLATION
POST-INSTALLATION
10.
With clean hands, gently slide the FMF muffler onto the header. Positioned correctly, the FMF logos
should be at the 3 & 9 o’clock position when looking from the rear. Wipe away any excess silicone.
11.
Install the existing OEM bolt through the subframe into the mid-pipe. Do not fully tighten at this time.
12.
Slide the strap bracket carefully over the muffler and position it to the upper mounting point. Be careful
not to scratch the aluminum canister and make sure the “inside” sticker on the bracket is facing inward
to the subframe.
13.
To install the mounting bracket, use vise grip pliers to pinch the strap bracket tabs together and install
the supplied 8mm x 25mm bolt with the aluminum spacer between the subframe and the bracket. Do
not fully tighten at this time.
14.
Make sure the header and muffler are in neutral positions and not binding. Slowly tighten all mounting
fasteners and clamps to OEM specified torque specs, starting from the front and working your way back.
15.
Inspect the complete exhaust to make sure there is no contact with the frame, shock spring, engine,
body panels or any cables, hoses or wiring. The exhaust system should only be in contact with the
exhaust port and mounting points. Confirm all controls operate in accordance with the manufacturer’s
specifications.
16.
We recommend using High Temp Silicone for an improved seal. Please follow instructions for the
Silicone and allow sufficient time to dry before starting the engine.
17.
Before operating your vehicle, we recommend either stock jetting or installing our Power-Up jetting kit
for optimum performance. Our jetting recommendations are to be used as a guide only and were
developed based on operation at sea-level at 70 degree ambient air temperature. There are too many
variables outside of FMF’s control to give you an exact configuration. If you’re not capable of tuning the
carburetor yourself, please find a mechanic in your area who is capable to take on this role. Refer to our
website for more jetting information.
18.
Start the engine and bring it up to operating temperature. Check for exhaust leaks.
19.
Let engine cool completely and re-torque all mounting hardware to the manufacturers specifications.
To clean your FMF muffler, allow to cool and use mild soap and water. Do not spray water onto a hot exhaust. Dry completely to prevent
streaking. Mild soap and water is recommended on the muffler canister to prevent streaking and uneven discoloration.
We recommend repacking your FMF muffler after every 20-30 hours of normal use when properly jetted. This will maintain peak performance
and keep that race tone. Water will ruin the packing. Cover the exhaust outlet when washing your machine. Repack your muffler if water
enters into the chamber. We have various packing materials to choose from. We also recommend cleaning the spark arrestor screen (if
equipped) gently using a wire brush after every 30 hours of use.
To repack the muffler, remove the allen screws from the front of the muffler using a allen wrench. Do not remove the rear endcap. Gently slide
out the front mid pipe from the muffler canister. You may need to use a rubber or plastic mallet to lightly tap it out. Be careful not to damage
the muffler. Unwrap the packing from the core and discard. Wrap the core with new packing and secure with a strip of 1/2” masking tape. Do
not pack too tightly, as this will hamper performance and increase the sound level. Before re-installing the inner core assembly, apply a thin
layer of high temp silicone on the front endcap where the aluminum canister slips over. Slide inner core assembly into canister making sure
the perforated core fully seats in the rear endcap. Wipe off any excess silicone. Re-install the allen screws until snug or tighten 1/4 turn after
the screw makes contact with the canister.
MAINTENANCE
Disclaimer
FMF Racing inspects all products prior to packaging and strives toward improving its products. Our guarantee is limited to the replacement of defective
products. This limited guarantee is in lieu of all other guarantees or warranties implied or expressed. Buyer assumes all risk for any and all damage caused to
himself, a third party and/or property by virtue of failure of this product. We make no warranty as to products distributed by FMF Racing, expressed or implied
from our suppliers or 3rd party vendors. This includes, without limitation, any warranties or merchantability and fitness for a particular purpose. All products are
offered and designed for use with standard machines. FMF Racing makes no claims as to the products effectiveness on modified machines. FMF Racing is the
sole determiner of abuse, misuse, installation errors and modifications. We assume no liability for any errors in listings, specifications, part numbers, prices or
model applications. We reserve the right to change specifications, product descriptions, product quality, pricing and application at any time without notice and
without further obligation. By installing and/or using an FMF product, you hereby accept and understand these stated terms and conditions and have followed all
instructional steps.