Spec sheet need spec weight ect
SOURCE: What are the fork oil specs for a 1999 Yamaha YZ 250
Well you have indeed come to an interesting subject, and there is a lot to work out on correct viscosity and choosing the right oil with at least a viscosity index of at least 150(the higher the index number,the less likely it is going to change with temp),but I won't go into that now.
Here is a basic sort of 'rule of thumb' that has worked for me as a good starting point for trail/MX larger forks with long travel (inverted or standard)from 125 upwards is +/- 200cc of ATF(AUTOMATIC TRANSMISSION FLUID).
I would not recommend SAE oil as something marked 5wt can actually be more viscous than another oil marked 7.5wt.Yamaha recommend S1 suspension oil and I would assume that this would be the correct oil for your bike ,but failing to get this you can use Mobil 1 ATF fork fluid or alternatively just standard ATF which you can probably get at your local garage.
Your bike I think is 195cc of S1 for each fork.
The heavier the person riding, the pre-load should be increased or if not the facility for this you can fit spacers /change springs and visa-verse for a lighter bloke.Most modern bikes have simple screws where you can change the compression damping etc. to suit the application ,but older bikes you need to change the oil to less/more viscous or re-valve them.
I hope this has answered your questions.
Please get back to me if you need more help
Testimonial: "Thanks for the info- lots of great tips thanks for all your help!"
SOURCE: 1986 yamaha tt225 I need carb specs please
Not sure exactly what you are needing? Carb size? Jet sizes?Float adj? Also ,is this an '86 TT225S? If so the carb is a 40mm Mikuni, the Pilot/Slow Jet is a #42, the Main jet is a #118 Can you be more specific on model and what you are looking for if this is not what you need?
SOURCE: 2007 Mt 03 Cuts out
It seems as if the air-petrol control nozzles are not set appropriately(i.e. not tuned properly). Another possiblity is that the ignition switch has got some loose connections, thus cutting off electricity to flow(only ignition wiring) thus stpping the vehicles engine. Even if it gets grounded to the body of the bike, the result will be **** you have explained. When stationary the engine will not stop since there isn't sufficient vibration to dislodge the wire..sodeep
SOURCE: whats the factory spec on a 03 yz250 fork oil
You can get a free service manual at
http://www.yamaha-motor-europe.com/community/service/manuals.jsp
It will have the spec in it.....I am guessing S1
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