Tomorrow ill go to the mechanic again and show them the numbers, this time will watch them do it ;)
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Tomorrow ill go to the mechanic again and show them the numbers, this time will watch them do it ;)
Here is the link to find what Yamaha dealers are in your area….
http://www.yamaha-motor.com.cn/mc/de...B7%9E%E5%B8%82
Jesus, MJH, 你是不是在幕后学中文？Quote:
Originally Posted by MJH
Tell the people at Google translate.Quote:
Originally Posted by euphonius
http://translate.google.com/#zh-CN/e...8A%A8%E5%8A%9B
So I went to yamaha dealer and told them to check my valves again. I said to myself that this time i will watch the guy do it. So he unscrew the valve covers and the two little cap. Then he started fiddling around the valves with a spanner. When I asked him if he needed a feeler gauge he laughed and said that he doesnt need it. He explained why but my Chinese isnt good enough to catch everything and the result is that i have no idea why he didnt need that gauge. 15min later the job was done and he said its all good.
Im a bit confused, is there a way of adjusting the valves without a gauge? My YBR ia a 2012 model so maybe on the newer bikes this problem is solved some other way? I realy have no idea...
NoQuote:
Originally Posted by modron
He is a twat Chinese mechanic
I got laughed at when I borrowed feeler gauges, was told to just lift up n down to get clearance
Total bullshit
Once done correctly I had better smoother power and no more hesitations in high rpm
Buy some do it your self it's no worse then paying a twat to do a bad job
+1Quote:
Originally Posted by NZBrakelathes
There are feeler gauges, and then there's the good old Chinese feeler method. I wouldn't want to count on the latter, but I did actually do it one time on a rental bike in Vietnam. Intake was tighter than a new bride so I set it by feel. There's an old saying that too loose is better than too tight, but why risk it.
BTW, you did sit in the shop all night and wait until morning when the engine was stone cold to adjust the valves... right?
Cheers!
Ok then, looks like my bike needs to be checked properly. I have nearly 30k on the clock and it would seem that my mechanic was not fully honest with me. Id love to adjust the valves myself but Ive never done it so i might screw something up. Better not.
I will PM bikerdoc later, he lives in a bigger city not far from me, maybe he knows some reliable mechanic there.
Thanks for the info
One more thing....
I think it was mentioned earlier, but worth bringing up again. Almost every Chinese factory that has ever produced a specification guide has the exact same intake and exhaust clearances listed for every engine type ever made. If you have a QM200, use the specs from the Suzuki DR200. If you have a QM250, use the specs from the Suzuki TU250. If you have a Yamaha YBR250, find the specs from the YBR250 outside of China. Whatever bike you have, cross reference the engine to the exact model they copied from Japan. NEVER trust the specs from the Chinese factory unless you have personally talked to the engineer that designed the engine.
Cheers!
Yeah, I read about this before.
I have a service manual in Spanish for 2007 model. My model is 2012 but i dont think engine changed much so i will use those specs there. Thanks for the heads up and hope America treating you well!
Are tappets set hot or cold? That depends on engineQuote:
Originally Posted by ChinaV
These are shit engines and badly made tappets as there's a weird angle between the adjuster and valve
Won't make much if any difference as you can't truely make up for poor design
Hot or cold both will be better then twat mechanics here
If hot do a slightly smaller gap - the old design won't make any real difference
Just use a good reliable method not the twat method
Very important thread to keep your engine sound and well. Just two more tips if I may. Do this during service when oil is drained as some might come out of the side hole when the engine is turned. If not sure if the valves are on rocking point, you can undo the cover on the top of the engine exposing the gear and valve drive. On the gear and casing is "dot" marks that should correspond. On the Loncin LX250GY or CBP engine the cover is secured with two 8 mm nuts. On some other engines the cover has a 10 mm nut on the other side. See picture. It is essential to remove the fuel tank on most bikes to do this task.
Attachment 16604
ChinaV, I used your moving engine image on the maintenance page of my blog if its ok with you.
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