valve adjustment, speed and mileage

[GZ250]

Had first time valves adjustment on my 05' GZ250 at 19900miles from the dealership. i was having power loss and i could feel that the bike is not maintaining the power and the mileage went down to 55 mpg. otherwise everything was ok. so decided to have the valves checked and it was a very good decision. the mechanic told me that the exhaust valves were tight. after the adjustment i can feel the difference. i got back the speed and mileage. now it touches 75mph every easily and on the first fill up i got 63mpg. i dont go at 75 but now the ride is smooth and i can go faster. even in head wind i can maintain the speed and it is such an incredible difference and now i realize that valve adjustment is a good idea if speed and milages is going down.

the guy did a test ride and after he came back told me that my clutch is missing and probably needs replacement, he said" when i go in the 3rd gear it just revs up- you know what i mean" i said yes i know what you mean, you mean i give you more $$$, they told me the parts and labor for clutch is $200. but i dont have any trouble and i never feel any clutch slipping or missing. last year (almost more than 6 months now the same guy told me that my front brake shoes need replacement) and i am still using the same old ones and no problem. So always be careful with the suggestions and advise from mechanics.

i told this guy that i would stay at the shop while he does the adjustments. he took the gas tank and covers apart and than he told me the engine is hot and the manual says that it should be cold so he put two fans to cool down the engine and it took like 20-30 mins. he was done in 1.5 hrs. but he charged me for 1.8 hrs ($79/hr). when i came home and did the calculation for the 0.3x79 he over charged me around $23. i called the shop and they were good enough to refund the overcharge, i am their regular customer anyway. i think the valve adjustment can be done in one hour if engine is already cold as they have all the nice tools and lift up the bike to a nice position to work with.

so thats the story of valve adjustment.