If you run with your lid on it will run rich and probably poorly, but it won't really hurt the engine (might foul your plug sooner though).

Keep in mind that the EHS lid, while it has a "water repellent" Outerwears on it, it is BY NO MEANS WATERPROOF. Better than nothing in the wet, but not the same protection as a closed lid!

I would suggest that next week that you put the lid back on and try to rejet it and see if it will run reasonably well. I have heard that the 06/07's get a lot more air in stock form than the 40/05's, so it might be possible. But, if this is a huge issue, you might just have to pull the HRC kit off and go back to stock???????

 

i know about the starting of the machine and the throttle. but, will you still do damage if you give it gas before you hit the start button?? and is there a better battery that you can put in the 06 450, i thought that i heard somebody say that they put in a battery from a honda street bike. youre thoughts??

 

On a cold start, I pump the throtle a few times to squirt fuel into the carb and prime it. But on a hot start this will tend to flood it, then you will have to crank it a bunch of times to clear the fuel out before it will want to start.

 

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Try pulling the plug next time it locks up. I know thats a rather difficult task. It could be fuel blurping into the cylinder after you shut off the engine. Considering the elevated compression, it wouldn't take much to bump the compression high enough to stop the piston from reaching TDC. Probably a float issue.

 

Sorry to come to this so late, I have been busy at work... Anyway, What type of Battery Tender is working best for you? I have seen them advertised with Rocky Mountain ATV so far....

Also, This is way off the subject, but there is some good knowledge here, unless I am not seeing things, there is no Master Link on a stock '06 450R. Why is that? I have a '00 400EX also, and it did not have one either.

 

when i first got my 2006 450er the guy that delievered it said to give it a little gas when your starting it so i did well one week after i got it my starter clutch went out i was pissed cause it costed me $637.89 so yeah dont do that

 

so basicall he is saying dont start it and hold down the gas at the same time????

 

Can anyone tell me wat size fielder gage the valves should be set on intake and exhaust on a 2007 trx450er i can't find anything on line for 450ER I only find 450R thanks

 

Thanks for the information!!

 

Hello guys I have a 450 er 2007 that I'm working on for my cousin I noticed it cranks over real hard only half a turn at a time. Valves r set like they should b. But I noticed on the right exhaust valve the one with the decompression arm if I tighten the lil adjuster screw almost all way down it cranks over like a dream but if I tighten it to were it just starts touch the rocker arm it cranks over hard like a week battery but the battery is brand new the hole top end was just redone anybody got idea wat it could be. Is it a bad decoration release or wat thanks for any help