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Recalls
990137 - Insufficiently Tightened Cylinder Head Nuts - 2015-2018 Yamaha XC155 Scooters
Recalls

990137 - Insufficiently Tightened Cylinder Head Nuts - 2015-2018 Yamaha XC155 Scooters

oemdtc May 27, 2020 No Comments

May 15, 2020 NHTSA CAMPAIGN NUMBER: 20V277000

Insufficiently Tightened Cylinder Head Nuts

A fouled spark plug could cause the engine to stall at idle and possibly not restart, increasing the risk of a crash.

 

NHTSA Campaign Number: 20V277

Manufacturer Yamaha Motor Corporation, USA

Components ENGINE AND ENGINE COOLING

Potential Number of Units Affected 3,116

 

Summary

Yamaha Motor Corporation, USA (Yamaha) is recalling certain 2015-2018 XC155 scooters. The cylinder head nuts may not have been tightened properly and could loosen, allowing coolant to foul the spark plug.

 

Remedy

Yamaha will notify owners and dealers will replace the cylinder head gasket and tighten the cylinder head nuts, free of charge. The recall began May 29, 2020. Owners may contact Yamaha customer service at 1-800-962-7926. Yamaha's number for this recall is 990137.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

Check for Yamaha Recalls


IMPORTANT SAFETY RECALL NOTICE

This notice applies to your vehicle, VIN xxxxxxxxxxxxxxxxx

Model:

May 29, 2020
990137

Dear Yamaha Owner:

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Yamaha Motor Corporation,

U.S.A. has decided that a defect which relates to motor vehicle safety exists in certain 2015~2018 XC155 (SMAX) scooters. Our records indicate that you own the affected scooter shown above.

The reason for this recall:In affected scooters, the cylinder head nuts may not have been tightened properly and could loosen, causing the cylinder head gasket to fail. If this happens, coolant might enter the combustion chamber and foul the spark plug, which could prevent the engine from starting, or the engine could stall at idle, which could result in a crash with injury or death.
What Yamaha and your dealer will do:To correct this defect, your authorized Yamaha dealer will replace the cylinder head gasket and tighten the cylinder head nuts properly per the Service Manual. This procedure takes a little over 2½ hours to perform, but be aware that your Yamaha dealer may need to keep your scooter longer. There will be no charge to you for this procedure.
What you should do now:Please call your Yamaha dealer to make a service appointment to have the procedure(s) performed. At that same time, you can find out how long they expect to keep your scooter to complete this service. Remember to take this letter with you when you take in your scooter.

Only ride your scooter to the dealership to be modified. You should avoid riding your affected scooter shown above whenever possible until you can get it to the dealer to have this modification performed.

If you are unable to return to the Yamaha dealer who sold you the scooter, this service will be performed by any authorized Yamaha scooter dealer. To find a dealer near you, call 1‐800‐88‐YAMAHA or visit the Yamaha website at www.yamaha-motor.com.

If you have had this repair performed before you received this letter, you may be entitled to receive reimbursement for the cost of obtaining a pre‐notification remedy of the problem associated with this repair. For more information, contact Yamaha Customer Relations at 1‐800‐962‐7926.

Federal regulations require that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within 10 days.

If you need help:If, after contacting your dealership, you have questions or concerns which the dealership is unable to answer, please write to:

Yamaha Motor Corporation, U.S.A.
Customer Relations Department
P.O. Box 6555
Cypress, CA 90630
Or call: 1-800-962-7926

If, after contacting Yamaha Customer Relations, you are still not satisfied that we have done our best to remedy the situation without charge and within a reasonable time, you may submit a written complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590; or call the Auto Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. Refer to NHTSA recall number 20V227.

If you no longer own this Yamaha:If you have sold your scooter to another party, please call us toll-free at 1-800-962-7926 with the name and address of the new owner, along with the serial number shown above your name on the address label above.

We’re sorry to cause you any inconvenience, but we are sincerely concerned about your safety and continued satisfaction with our products. Thank you for giving your attention to this important matter.

Sincerely,

Service Support Group

Yamaha Motor Corporation, U.S.A.

 


May 15, 2020

 

Chief Administrator
National Highway Traffic Safety Administration
Associate Administrator for Safety Assurance (NVS-215)
1200 New Jersey Avenue SE,
Washington, DC  20590

 

Regarding: Yamaha Model Year 2015~2018 XC155 Scooters, Factory Modification Campaign.

 

Dear Sir/Madam:

The purpose of this correspondence is to provide preliminary information required by 49 CFR 573 and the National Traffic and Motor Vehicle Safety Act regarding a defect notification campaign we are initiating.  Attached are draft copies of the Owner’s notification letter, for Agency approval, and the dealer technical bulletin. The envelope format and label has previously been approved by the Agency for prior campaigns.

 

  1. Manufacturers Name:

Yamaha Motor Taiwan Co., Ltd.
3, Chung Hua Rd., Sec. 2
Taoyuan City, 32068 Taiwan

Imported Vehicle Distributor:

Yamaha Motor Corporation, U.S.A.
6555 Katella Avenue
Cypress, California 90630

 

  1. Vehicles Affected: Make:

Yamaha

Model:

2015 ~2018 Model Year XC155 Scooters

 

Nominal Engine Displacement:

XC155 is 155cc

 

Production Period:

09/18/14 to 09/14/17

 

  1. The campaign relates to the Scooters Cooling system.

 

  1. Total number of subject vehicles: Current estimate: 3,116 units.  This will be updated in a supplemental report as we finalize the affected VIN range.

 

  1. VIN Range: Tentative range will be supplied in forthcoming draft Technical Bulletin. Likewise, this will be updated in a subsequent report as data is confirmed.

 

  1. The campaign involves the inspection and retorquing of cylinder head nuts. In affected Scooters, cylinder head nuts may not be properly toruqed. If this occures, there is a possibility for engine coolant to seep into the combustion chamber at low engine speeds which may cause the engine to stall and possibly not restart. These conditions could result in the possibility of a crash with injury or death. Please refer to the draft Technical Bulletin which will be furnished to the Agency and Yamaha dealers upon completion describing the situation which is the subject of the campaign.

 

  1. On May 11, 2020, Yamaha Motor Corporation, U.S.A. was informed by the manufacturer, Yamaha Motor Taiwan Co., Ltd. that such a situation exists. This was determined pursuant to a quality control review, testing and a review of models that use a substantially similarly part design.

 

We anticipate commencing dealer/owner notification shortly after the owner's notification letter is approved by NHTSA (a draft copy of the Customer Notification Letter has been provided via Agency Recall Portal), the affected VIN range is ascertained, and the Technical Bulletin with service procedures is confirmed and finalized by Yamaha service staff. Assuming the Agency can approve the letter within 5 days of receipt, (perhaps May 22nd) we will have the letter and the Technical Bulletin printed. Normal turn-around time is 3 working days for such printing. Hence the materials will be ready for mailing approximately May 28th. Final copies of these documents will be provided to the Agency as soon as possible.

 

In the event we can answer any questions or provide supplemental information, please do not hesitate to contact me.  My direct telephone number is 714-761-7842.  The fax number is 714-229-7944.  My email is [email protected]yamaha-motor.com.

 

Sincerely,

Bradley Franklin

Bradley Franklin
Manager, Government Relations & Certification

 

BRF/lf

cc:
By Recall portal

 

6555 Katella Avenue • Cypress • California • 90630-5101 • (714) 761-7300 • Fax (714) 229-7944
May 15, 2020
Chief Administrator
National Highway Traffic Safety Administration
Associate Administrator for Safety Assurance (NVS-215)
1200 New Jersey Avenue SE,
Washington, DC 20590
Regarding: Yamaha Model Year 2015~2018 XC155 Scooters, Factory Modification Campaign.
Dear Sir/Madam:
The purpose of this correspondence is to provide preliminary information required by 49 CFR 573 and the National Traffic and Motor Vehicle Safety Act regarding a defect notification campaign we are initiating. Attached are draft copies of the Owner’s notification letter, for Agency approval, and the dealer technical bulletin. The envelope format and label has previously been approved by the Agency for prior campaigns.
1. Manufacturers Name: Yamaha Motor Taiwan Co., Ltd. 3, Chung Hua Rd., Sec. 2 Taoyuan City, 32068 Taiwan
Imported Vehicle Distributor: Yamaha Motor Corporation, U.S.A.
6555 Katella Avenue
Cypress, California 90630
2. Vehicles Affected: Make: Yamaha
Model: 2015 ~2018 Model Year XC155 Scooters
Nominal Engine Displacement: XC155 is 155cc
Production Period: 09/18/14 to 09/14/17
3. The campaign relates to the Scooters Cooling system.
4. Total number of subject vehicles: Current estimate: 3,116 units. This will be updated in a supplemental report as we finalize the affected VIN range.
5. VIN Range: Tentative range will be supplied in forthcoming draft Technical Bulletin. Likewise, this will be updated in a subsequent report as data is confirmed.
6. The campaign involves the inspection and retorquing of cylinder head nuts. In affected Scooters, cylinder head nuts may not be properly toruqed. If this occures, there is a possibility for engine coolant to seep into the combustion chamber at low engine speeds which may cause the engine to stall and possibly not restart. These conditions could result in the possibility of a crash with injury or death. Please refer to the draft Technical Bulletin which will be furnished to the Agency and Yamaha dealers upon completion describing the situation which is the subject of the campaign.
7. On May 11, 2020, Yamaha Motor Corporation, U.S.A. was informed by the manufacturer, Yamaha Motor Taiwan Co., Ltd. that such a situation exists. This was determined pursuant to a quality control review, testing and a review of models that use a substantially similarly part design.
We anticipate commencing dealer/owner notification shortly after the owner's notification letter is approved by NHTSA (a draft copy of the Customer Notification Letter has been provided via Agency Recall Portal), the affected VIN range is ascertained, and the Technical Bulletin with service procedures is confirmed and finalized by Yamaha service staff. Assuming the Agency can approve the letter within 5 days of receipt, (perhaps May 22nd) we will have the letter and the Technical Bulletin printed. Normal turn-around time is 3 working days for such printing. Hence the materials will be ready for mailing approximately May 28th. Final copies of these documents will be provided to the Agency as soon as possible.
In the event we can answer any questions or provide supplemental information, please do not hesitate to contact me. My direct telephone number is 714-761-7842. The fax number is 714-229-7944. My email is [email protected]yamaha-motor.com.
Sincerely,
Bradley Franklin
Bradley Franklin
Manager, Government Relations & Certification
BRF/lf
cc: By Recall portal

 


4 Affected Products

Vehicles

MAKEMODELYEAR
YAMAHAXC1552016-2018
YAMAHAXC155F2015

5 Associated Documents

Miscellaneous Document - 573 Notifiction

RMISC-20V277-4736.pdf 101.408KB

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Defect Notice 573 Report

RCLRPT-20V277-4543.PDF 215.451KB

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Recall Acknowledgement

RCAK-20V277-6342.pdf 244.743KB

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Recall Quarterly Report #1, 2020-2

RCLQRT-20V277-0654.PDF 211.149KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-20V277-7746.pdf 88.348KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=20V277&docType=RCL

For the most up to date documents from NHTSA for this Recall, click the lick above


 

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