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decomperssion lever on a 04 wr450

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Do you really need it on the bike? I see the plugs for replacement on the motor but have heard people talking about an auto decompression cam. If I remove the lever do I need a new cam? and is the lever just for starting with the electric starter? Thanks 😢

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OK so what does it do? I'm guessing it would just lean the carb a little for a cleaner start or does it do something diffrent? Is it for after the bike motor is warm or during hot temps? Thanks I'm new to the bike and no owners manual.

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When they are hot or you drop them it makes them a bit easier to start by opening an air passage through the carb. (crank it with the lever pulled in)

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Thanks I guess I was right by saying it just leans it out a bit.. Thanks again for your help 😢

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