KK3 – Transmission Mainshaft Safety Recall – 2018-2019 Honda Motorcycles

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©2019 American Honda Motor Co., Inc. – All Rights Reserved
Service Bulletin
American Honda Motor Co., Inc.
CUSTOMER INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and training
to correctly and safely maintain your Honda. These procedures should not be attempted by any other individuals and you should not assume this bulletin
applies to your Honda, or that your Honda has the condition described. To determine whether this information applies, contact an authorized Honda dealer.
MTB 17192 (1905)
BACKGROUND
Honda is launching a SAFETY RECALL on certain model year 2018 CRF250L/LA, CRF250LR/
LRA RALLY, 2018 CBR300R/A, 2018-2019 CMX300/A and 2019 CB300R/A motorcycles to
replace the transmission mainshaft, which may have been improperly machined during manufacturing.
The machining error could result in a mainshaft circlip not completely seating into the circlip
groove, which could cause the circlip to become loose. A loose mainshaft circlip could be
dislodged, resulting in damaged transmission gears, which could cause the rear wheel to lock-up.
A rear wheel that locks-up increases the risk of a crash.
Honda will provide a new transmission mainshaft to replace the defective part.
Service Bulletin Multi-Model Transmission Mainshaft #1 includes the affected models and VIN
ranges, parts and warranty claim information and repair procedure information to replace the
transmission mainshaft.
Honda will notify customers by letter advising to make an appointment with an authorized Honda
dealer to perform the recall repair by replacing the transmission mainshaft with a new part.
AFFECTED UNITS
MODEL
VIN RANGE
FROM TO
2018 CRF250L ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CRF250LA ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CRF250LR RALLY ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CRF250LRA RALLY ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CBR300R ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CBR300R ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018 CBR300RA ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018-2019 CMX300 ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2019 CMX300 ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2018-2019 CMX300A ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2019 CB300R ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
2019 CB300RA ???????????????????????????????????????????????????????????????????? ????????????????????????????????????????????????????????????????????
DEALER REPAIR RESPONSIBILITY
• Repairs must be performed by a qualified technician.
• Performing this repair exactly as shown in Repair Procedure instructions is critical for the remedy
to be effective. Carefully follow all instructions.
• Service Management should inspect and confirm the repair.
• Dealer submission of a warranty claim affirms this repair was properly performed.
SAFETY RECALL
MULTI-MODEL:
TRANSMISSION MAINSHAFT #1
REVISED: November 26, 2019
2018-2019 MULTIPLE MODEL -TRANSMISSION MAINSHAFT SAFETY RECALL
This bulletin replaces Multi-Model: Transmission Mainshaft #1, issued October 18, 2019
TRANSMISSION MAINSHAFT #1
2 of 3 ©2019 American Honda Motor Co., Inc. – All Rights Reserved
REVISED: November 26, 2019
DEALER INVENTORY
Effective May 31, 2019, YOU MUST NOT
SELL any affected (new or used) 2018
CRF250L/LA, CRF250LR/LRA RALLY, 2018
CBR300R/A, 2018-2019 CMX300/A and 2019
CB300R/A motorcycle until it is repaired
according to this Service Bulletin.
• There are both affected and unaffected
units in the market. To search for applicable
recalls on a specific unit, you must
use Unit Information on iN.
• To manage your affected inventory, you
must use eResponsibility Report on iN.
PARTS INFORMATION
Parts are now available through the standard
parts ordering procedure.
TEMPLATE CLAIM INFORMATION
After completing the recall repair, immediately
submit one template claim using the
appropriate template number below.
MODEL PART DESC. PART #
CBR300R/RA,
CMX300
Mainshaft assy,
set 06230-K33-305
ENG SET A 06230-K87-315
Model Part Desc. Part #
CB300R/RA
Mainshaft assy,
set 06230-K0A-305
ENG SET A 06230-K87-315
Model Part Desc. Part #
CRF250L/LA/
LR/LRA Rally
Mainshaft assy,
set 06230-KZZ-315
ENG SET A 06230-K87-315
MODEL TEMPLATE FLAT RATE
CBR300R/RA KK3A 5.5
CMX300/A KK3C 6.8
CB300R/RA KK3E 6.8
CRF250L/LA KK3F 4.9
CRF250LR/LRA Rally KK3G 5.7
TECHNICAL QUESTIONS
If you have any technical questions relating to
the repair procedure, please contact:
Motorcycle TechLine Online:
iN > Service > TechLine > TechLine Connect
Or call (800) 421-1900, option 9.
WARRANTY QUESTIONS
If you have any warranty administration
questions relating to template claims and
claim filing procedures, please contact:
Motorcycle Warranty Online:
iN > Service > Warranty & HondaCare >
Warranty Connect
Or call (800) 421-1900, option 7.
Before performing this recall repair, check
for a punch mark before the first character
of the VIN (see IDENTIFICATION section).
• If there is a punch mark as described, the
repair has already been performed. DO
NOT continue with this repair.
• If there is no punch mark as described,
proceed with the repair.
Refer to the appropriate Service Manual to
perform this repair.
NOTE: Drain the coolant into a clean container
to be reused.
NOTE: Replace the engine oil and oil filter with
new.
NOTE: It is not necessary to remove the piston
from the connecting rod. The piston pin circlip
included in the ENG SET A will not be used.
NOTE: It is not necessary to disassemble the
oil pump.
After the recall repair has been completed,
place a punch mark into the frame before the
VIN, as shown in the example below.
RECALL REPAIR VERIFICATION
RECALL REPAIR PROCEDURE
IDENTIFICATION
JH2RC53…
NEW
3 of 3 ©2019 American Honda Motor Co., Inc. – All Rights Reserved
TRANSMISSION MAINSHAFT #1
REVISED: November 26, 2019
TEXT OF CUSTOMER LETTER
July 2019 NHTSA Recall 19V-412
IMPORTANT SAFETY RECALL
This notice applies to your vehicle: XXXXXXXXXXXXXXXXX
Dear Honda Powersports Customer:
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act.
WHAT IS THE REASON FOR THIS NOTICE?
Honda has determined that a defect which relates to motor vehicle safety exists in certain:
 2019 Honda CB300R
 2018 Honda CBR300R
 2018 Honda CRF250L
 2018 Honda CRF250L Rally, and
 2018-2019 Honda CMX300 (Rebel) motorcycles.
A circlip that secures the transmission gear to the main shaft could detach and result in gear misalignment. A misaligned gear can:
1) shift the transmission from neutral into gear during engine start, potentially resulting in unexpected motorcycle movement; or
2) seize the transmission and rear wheel while the motorcycle is in motion.
Either outcome increases the risk of crash or injury.
A misaligned gear could cause abnormal engine noise, which might warn you of the defect, but either outcome could occur without first
experiencing abnormal engine noise.
WHAT WILL HONDA DO?
The dealer will replace the transmission main shaft for free.
WHAT SHOULD YOU DO?
Please call any authorized Honda motorcycle dealer and make an appointment to have
the transmission main shaft replaced for free. Once you make an appointment for your
motorcycle, be advised that the replacement process may take approximately 5 to 7
hours depending on your model (please see chart). However, your dealer can provide
you with a better estimate of the overall time for this service visit, as it may be necessary
to make your motorcycle available for a longer period of time. If you are not the only rider
of this motorcycle, please advise all other riders and passengers of this important
information!
For assistance locating a Honda motorcycle dealer, you may call Honda Powersports Customer Service at:
(866) 784-1870 or use the “find a dealer” option on www.powersports.honda.com.
CHECK YOUR MOTORCYCLE FOR OPEN RECALLS
You can check your motorcycle’s eligibility for repair under this or any other recall. Please access the Honda recall lookup tool at
www.powersports.honda.com/recalls.aspx and enter your VIN.
OWNER INFORMATION
You received this recall notice because government regulations require that notification be sent to the last known owner of record. Our
records are based primarily on state registration and title data, which indicate that you are the current owner of this motorcycle. If this is
not the case, or if any of the information is incorrect, please complete, sign and return the Information Change Card and we will update
our records. If you are a lessor of this motorcycle, Federal Regulations require you to forward this notice to your lessee within ten days.
DO YOU STILL HAVE MORE QUESTIONS?
Should you have any questions about this recall, please contact your authorized Honda motorcycle dealer. Should you need
additional assistance, you may contact Honda Powersports Customer Service toll free at (866) 784-1870.
If you believe that American Honda or the dealer has failed or is unable to remedy the defect in your motorcycle free of charge, within a
reasonable period of time (within 60 days from the date you first contacted the dealer for a repair appointment), you may submit a
complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Ave., SE, Washington, DC 20590.
Alternatively, you may call the NHTSA’s toll-free Safety Hotline at 888-327-4236 (TTY 800-424-9153), or go to: www.nhtsa.gov.
We apologize for any inconvenience this recall may cause you.
Sincerely,
American Honda Motor Co., Inc.
Powersports Products Campaign #KK3 / Service Bulletin: Multi-model: Mainshaft #1
MODEL LABOR TIME
CB300R 7 hours
CBR300R 5 hours and 30 minutes
CRF250L 5 hours
CRF250L Rally 5 hours and 45 minutes
CMX300 (Rebel) 7 hours
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