YOSHIMURA 14730AP520 Works Finish AT2 Stainless Steel Full-System Instruction Manual

YOSHIMURA 14730AP520 Works Finish AT2 Stainless Steel Full-System

Race Series systems are

• NOT CARB/EPA tail-pipe emissions compliant.
• NOT street legal.
• For “Closed Course Competition” use only.

You must know how to remove and replace your stock exhaust to install this product otherwise have it installed by a professional mechanic. Keep all stock parts from your existing system as some components may be necessary to install your new Yoshimura exhaust depending on the application. Read through all instructions before beginning installation. An exhaust system can be extremely hot. Let the motorcycle cool down before beginning installation. Always wear hand and eye protection and take precautionary measures to avoid injury.

Tools Required

NOTE
IN THE STATE OF CALIFORNIA, IT IS ILLEGAL TO MODIFY THE EMISSION CONTROL SYSTEM, WHICH INCLUDES THE CARBURETORS OF ANY VEHICLE

Assembly Diagram

CAUTION: The exhaust system can be extremely hot. Let the motorcycle cool down before beginning installation. Always wear hand and eye protection and take precautionary measures to avoid injury.
WARNING: Always properly support vehicles with a stand and/or lift when servicing or performing any work. Unstable vehicles may present dangerous conditions and may cause property damage and/or personal injury.
NOTE : Read through all instructions before beginning installation.

Removal

1. Loosen the muffler heat shield hose clamp. Remove the muffler and the heat shield bolt and carefully remove the muffler from the heat shield by sliding it forward.
2. Loosen the muffler exhaust clamp between the header and muffler.
3. While securely supporting the stock muffler, remove the muffler mount bolt and then carefully remove the stock muffler assembly.
4. Remove the left and right side lower cowling.
5. Remove the O2 sensor from the header.
6. While securely supporting the stock header, remove the header nuts and carefully remove the stock header.
   Note: The stock exhaust port gaskets will be used with the Yoshimura full system.

Installation

1. Install 14710-401, Yoshimura header using the stock header nuts. Do not torque at this time.

2. Install 14710-419, tailpipe inlet over 14710-401, header outlet.

3. Install 14730BP520-RMA, muffler onto 14710-419, tailpipe outlet. Align the muffler bracket to the front side of the stock muffler mount and secure using the stock muffler mount bolt and nut as shown.

4. Torque the muffler mount bolt to the factory specification.

5. Torque the header nuts to factory specifications.

6. Install the three RACE-SPX-2, short exhaust springs; two between the header to the tailpipe connection and one between the muffler to the tailpipe connection.

7. Re-install the O2 sensor into the Yoshimura header. Torque to factory specification.
   Note: If an aftermarket O2 sensor is not used, install M18X9PLG, O2 sensor plug into14710- 419, tailpipe.

8. Before starting the vehicle, check for proper clearance between the new exhaust system and rear suspension (i.e. tyre, swingarm, brakes, rear shock, etc.) If any problem is found, please carefully follow through the installation steps again. If a problem persists, please call the Yoshimura Tech Department at 800-634-9166 / in CA at 909-628-4722.

9. It is recommended that the muffler and tailpipe be wiped down with rubbing alcohol to remove oil and fingerprints. This will help prevent tarnishing of the finish after the exhaust has been heated up.
   Note: After starting the vehicle, it is normal for the new exhaust system and muffler to emit smoke until the oil residue burns off.

Works Finish

Care & Maintenance
Before starting the vehicle, clean the pipe thoroughly using a soft cloth and rubbing alcohol to remove any oil and fingerprints. The colour of the exhaust will change once the system has gone through a heat cycle of 15 minutes or more. Colour will vary depending on lean/rich conditions.

Clean using a soft cloth and soap. Do not use abrasive materials as they will scratch the surface. Surface reconditioning services are available to remove scratches and undesirable discolouration due to extreme heat. Contact Yoshimura Tech
Department at 800-634-9166 / in CA (909) 628- 4722 for more information.

Dear Yoshimura Customer,
Congratulations and thank you for purchasing a Yoshimura Exhaust System. Over six decades of experience in research and development, state-of-the-art machinery, materials and craftsmanship of the highest quality all come together in a product of exceptional quality and performance—in other words, this is the best thing you can put on your bike. We strive to provide you with a product perfect in fit and finish. However, if you have any problems, please give us a call. We have found that most fitment issues can be easily resolved by a conversation with one of our knowledgeable and friendly staff. If the issue cannot be resolved this way, our warranty evaluation program may be the answer. Please take a moment to review our recommendations for the care of your exhaust and our warranty information.

PLEASE NOTE: If you have any doubts about your exhaust: DO NOT START THE MOTORCYCLE! ONCE AN EXHAUST HAS BEEN USED OR MODIFIED, IT CANNOT BE RETURNED FOR CREDIT OR EXCHANGE. EXHAUST SYSTEM MAINTENANCE Yoshimura Exhaust Systems require very little care and maintenance; here are a few tips:

1. Use mild car/motorcycle soap to clean the exhaust system—do not use any abrasives or degreasers.
2. Clean your exhaust with metal/stainless polish every 1-2 months to retain the lustre and remove dirt and grime. (DO NOT USE POLISH ON “WORKS FINISH” SYSTEMS)
3. Avoid contaminating exhaust surfaces when hot.
4. Your exhaust system will change colour (blue, magenta, purple, and/or gold) due to heat; this is normal.
5. Keep all clamps, bolts and other fasteners tight as exhaust systems are susceptible to vibration damage.
6. If you ride in coastal regions or areas that use salt to control ice and snow, wipe the exhaust down after it cools to remove any possible salt residue, which can result in rusting.
7. If you are storing your motorcycle for the season, wipe the exhaust system down with rubbing alcohol before storage.
8. Head pipes glowing (visible in normal light) may indicate an excessively lean condition that must be corrected.

CARBON FIBER
Carbon fiber-equipped exhaust components require special attention. The following addresses wear issues directly related to carbon fibre:

1. Keep all clamps, bolts and other fasteners tight. Carbon Fiber is very susceptible to vibration damage.
2. Keep all chemicals and solvents away from the carbon fibre, as they will damage the finish.
3. High temperatures will cause the resin in the carbon fibre to break down. Visual signs such as an amber hue in the resin may be early signs of heat damage to carbon fibre.
4. Upon seeing amber-coloured resin, discontinue use. The exhaust system needs to be inspected by a representative from Yoshimura, for repacking, and/or repair. Continued use will cause component failure.

STAINLESS STEEL
Stainless Steel is not rust-proof but is less prone to rusting, staining and pitting; but it is prone to oxidation like all metals.

WORKS FINISH

1. Works Finish exhaust systems should never be cleaned with abrasives or polishes.
2. Yoshimura recommends using “Bar Keepers Friend” cleaner to remove minor stains.
3. Surface reconditioning services are available to remove scratches and undesirable discolouration due to extreme heat. Contact Yoshimura Tech Department at 800-634-9166 / in CA 909-628-4722 for more information.

RE-PACKING TIPS

To maintain maximum sound and engine performance the muffler packing will need to be replaced at some time during the muffler’s life. Yoshimura recommends repacking your muffler at least once a year. Failure to maintain the muffler packing may cause damage to the muffler and/or void the warranty. Regularly inspect the muffler body for discolouration, cracks, rattling, or other signs of wear caused by depleted muffler packing. If muffler packing is determined to be depleted or worn, a Yoshimura muffler re-pack kit is highly recommended to restore the muffler to optimum maximum performance.

Yoshimura offers a 3-5 day turnaround (plus transit time) to inspect and refurbish used and damaged mufflers. For more information on muffler repacking please visit our website at: https://www.yoshimura-rd.com/pages/repackand- insert-chart PRO TIP Before you install your new muffler for the first time log the weight in your Owner’s or Service manual along with the current hours or mileage on your vehicle. When you are performing periodic maintenance on your vehicle (like a tyre change, or an oil change) you can remove your Yoshimura muffler from the vehicle and weigh it again. Over time, the packing material inside your muffler will burn off with use, and the muffler will need to be repacked. When the weight loses approximately 100 grams of the original weight, you should consider getting your Yoshimura muffler repacked. You can order repacking kit or the parts to repack the muffler from the Yoshimura website, or your local dealer. You can also contact the Yoshimura sales office and arrange to send in your muffler for the repacking service too.

IMPORTANT TECHNICAL NOTE
Yoshimura recommends on all race exhaust systems, that all spring joints be safety wired. Recommended wire type 304/316 stainless steel with a .032” diameter should be used.

YOSHIMURA EXHAUST LIMITED WARRANTY
All Yoshimura R&D of America, Inc., exhaust systems carry a one-year limited warranty against defects in workmanship and/or materials.

WHO IS COVERED?
This warranty is provided to the original purchaser of the exhaust system.

WHAT VOIDS THE WARRANTY?

1. Abuse, misuse, improper installation and/or modifications
2. Custom applications
3. No proof of purchase at the time of warranty. The claimant must provide proof of purchase (original receipt or invoice)and a warranty authorization number (RMA) obtained from Yoshimura.
4. Finishes such as plating or painted surfaces with discolouration or rust due to inclement weather conditions, exposure to salt, exposure to chemicals, or lack of maintenance by the customer are not covered.
5. International grey-market products purchased through a dealer/distributor not authorized for your country will not be supported by this warranty.

EXTENT OF WARRANTY

Any defective exhaust system properly returned to Yoshimura will be repaired or replaced by Yoshimura. Yoshimura is not responsible for any other expense incurred by the customer under the terms of this limited warranty, nor is Yoshimura responsible for any damages either consequential, incidental, special, contingent or otherwise; or expenses or injury arising directly or indirectly from the use of the exhaust system. Any exhaust system returned to Yoshimura must be sent at the customer’s expense along with the proof of purchase and warranty authorization (RMA). Yoshimura reserves the right to determine whether the terms of the warranty, set out above, have been properly followed. If the terms are not followed this warranty is void. Yoshimura is the sole determiner of abuse, misuse, installation errors and modifications—should any of these be found, this warranty is void.

The duration of any implied warranties is limited to the duration of the express warranty. All incidental or consequential damages are hereby excluded. The warranty gives you specific legal rights and you may have other rights, which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above limitations and exclusions may not apply to you. If you have a fitment or other problem or are missing a part, please double-check this troubleshooting guide first:

1. Reference your instruction sheet and double-check all drawings and instructions
2. Make sure muffler clamps are installed correctly (refer to the instructions diagram). On many models, there is a right and wrong way to install. Also, verify the part numbers on the headers and tailpipe.
3. Always make sure to install spring-mounted manifolds and flanges on the cylinder head before installing headers.
4. Always take time to examine problems in detail.
5. When all else fails, call our technical support line at 909-628-4722. The technical line is open 9:00 am – 4:30 pm
6. Monday through Friday, Pacific Time. Please have the following information handy: Year/Make/Model of motorcycle, date of purchase, place of purchase, batch dates and part numbers (found on header and tail-pipe components).
7. Also, feel free to ask through online e-mail at sales@yoshimura-rd.com, or fax your questions/problems to (909) 591- 2198.
8. To obtain technical information directly from Yoshimura, call 909-628-4722.

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