POST-INSTALLATION
9. Slip the FMF midpipe over the header. Wipe off any excess silicone.
10. Install the stock bolt and washer removed in step 4 through the subframe into the midpipe. Do not fully
tighten at this time.
For 07 models you must use the supplied bolt and adapter sleeve. Insert the sleeve
into the subframe then thread the bolt through the sleeve into the midpipe mount. Do not fully tighten
at this time.
Gently slide the FMF muffler onto the midpipe. Positioned correctly the FMF logos should be at the
11.
3 & 9 o’clock position when looking from the rear.
12. While supporting the muffler, install the two (2) supplied 70mm exhaust springs from the muffler to the
midpipe using a spring puller tool (one spring on top, one on bottom).
13. Slide the strap bracket carefully over the muffler and position it to the rear upper mounting point. Make sure
the “inside” sticker on the bracket is towards the subframe
14. Using vise grip pliers, pinch the strap bracket tabs together and install the supplied 8mm x 20mm bolt to
attach the strap bracket to the frames.
Do not fully tighten at this time.
15. Make sure the header and muffler are in neutral positions and not binding. Slowly tighten all mounting
fasteners and clamps to manufacturer’s specifications, starting at the midpipe and working your way to the
back.
16. 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.
18. Before operating your vehicle, we recommend either stock jetting or installing our Power-Up jet kit for
optimum performance. Our jetting recommendations are used as a guide only and were developed based
Our jetting recommendations are to be used as a guide only and we developed
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 pricise recommendations. If you’re not capable of tuning the carburetor yourself, please find
a mechanic in your area. Refer to our website for more jetting information.
19. Start the engine and bring it up to operating temperature. Check for exhaust leaks.
20. 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. Windex® works great 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 midpipe 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 reinstalling 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. Reinstall the allen screws until snug or tighten 1/4 turn after
the screw makes contact with the canister. Allow sufficent time for silicone to cure before starting.
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
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.
We recommend using high temperature silicone for an improved seal. Please follow instructions for the
silicone and allow sufficient time to dry before starting the engine.
17.
