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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Help! I forgot to set cam TDC before removing them!
Post Info TOPIC: Help! I forgot to set cam TDC before removing them!
Stephen68


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Help! I forgot to set cam TDC before removing them!
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Hello everyone, and as the title says, i forgot to set my motor to TDC before i removed the top end for a re ring and cleaning. My question, what do i need to do in order to make sure i have no problems after reassembly? I know how to set the timing etc. but i am concerned that i forgot to do this before i disassembled the top end.....Someone please tell me what i need to do or can i just reassemble as normal and set timing like i normally would? Thanks!



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Thanks!

Stephen M.

2003 TTR250
ttboof


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It's OK 

Just set up with marks as per the thread on here or  the manual 

As long as you set up using the tdc  mark and the Cams lined up you will be OK 

 

No need to set at tdc when pulling it down 



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Stephen68


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ttboof, thank you very much....You made my night!......biggrinbiggrin



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Stephen M.

2003 TTR250
ttboof


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A good tip in Brian's thread is to carefully turn it over before you finish off and crank it 

Just to make sure it's all OK 



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petenz


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Bring the crank/piston to TDC any TDC as there is no right or wrong stroke
till the cams are timed..

just keep a eye on the cam chain as you turn it over to make sure it dosn't get snagged..



..



-- Edited by petenz on Sunday 21st of October 2018 11:52:46 PM

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pops


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Hi all i have a query on the use of the great big lump of plastic on the intake tube? 1995 O/E
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cry

 



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TTRfan


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Help! I forgot to set cam TDC before removing them!
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pops wrote:
Hi all i have a query on the use of the great big lump of plastic on the intake tube? 1995 O/E

cry 

 Hi Colin and welcome to the forum! 

I am guessing that the big lump of plastic you are asking about is the emulsifier and is there to take out any water or oil mist before it hits the airbox. All to do with emission control to stop the oil breather fumes going straight into the atmosphere - or all over your bike cry

Otherwise it is the resonator box higher up wink

More info here - tag on to this thread if you have any further questions about these parts please - https://ttr250.activeboard.com/t51169250/yamaha-energy-induction-system-yeis-boost-bottle-air-chamber/  biggrin

Brian



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