Question about Yamaha Motorcycles
Hi, Sldiam I would love to help you with your engine or chassis noise but I just loaned my brand new pair of listening ears to your local dealer's chief technician so he could take your bike for a test ride and give you his professional opinion and estimate about your noise and repair cost. If you are a little short on "DRACHMA" and a Dealership is not on your list of fun places to visit then perhaps the list below will help soothe your worried mind so you can make an informed decision.
3. Brake Rotors---BUZZ
7. Fairing Panels---WHISTLE
8. Fronk Forks---Plunk
10. Head Gasket---HISS
11. Hydraulic Lifters---TAP
13. Rear Shocks---SQUEAK
14. Shifting Trans---CLUNK
15. Solid Lifters---TICK
17. Connecting Rods Go---KNOCK-KNOCK---who's there, it's me "*****"
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Posted on May 31, 2017
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Posted on Jan 02, 2017
SOURCE: CAMCHAIN NOISE
need tohave your valves ajusted. intake valves should be about 5-thousnds, and exhasut should be about 7-thousands. be in all, the slite tap you are hearing will not hurt anything. Sometimes times a little lose is good to keep from bending a valve.
Posted on Jan 31, 2009
all v twin engines are noisy, if you could totally silence the exhaust noise, you would be horrified how awful the motor sounds, it could probably do with the cam chain tensioner ADJUSTING. i wouldn't think it would need replacing. unfortunately the manual only recomends this being done by a qualified tech, i have a xvs 650 with same trouble. i would adjust myself if i could find out the correct tollerences.
Posted on Mar 27, 2009
Could be your Flywheel,The yz426 has a riveted flywheel,over time these rivets wear from the flywheel spinning around,causing a "rattling sound"or it may be your timing chain is loose or has been stretched.
Posted on Jul 02, 2009
SOURCE: Need to change timing chain
Link has all the schematics for all sections, links to specifications as well...good luck and Cheers!
Posted on Sep 04, 2010
Testimonial: "This is exactely the info I was looking for! Thank-you!"
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