[mitchbase]

250 f 07 has 100 hours, should i change the rings or both piston too. Not the best pictures but no score marks on piston.
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Also do i need to do anything to the valves? clean em up or anything thanks ?

 

[mitchbase]

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[Scuff]

If it was my bike i'd replace the piston.


What do the valves look like when looking through the inlet and exhaust ?....Has the bike been smoking or burning oil ?

 

[mitchbase]

no smoking or burning oil, but back fires a bit when backing off the throttle. What do you mean by looking through? when they are compressed open do you mean?

 

[Scuff]

Sorry bad wording .....Look into the cylinder head where the exhaust connects and you'll see the valve stems .....They shouldn't be covered in black gunk.

 

[mitchbase]

no, no gunk on them just checked. They look kinda a browny colour but dry.

 

[mitchbase]

just ordered my piston kit. Will a need a special tool for the rings or can i just use some thin metal and a jubilee clip?

 

[Scuff]

Which piston kit did you go for ? ...A or B piston ?


I don't use any ring compressor, just the strength in me sausage fingers

 

[mitchbase]

Dunno whats the difference? just left it in Niknaks capable hands. Bet you have hands like leather. Any idea whats causing the backfire/gargling noise when backing off throttle? Anything else i should do whilst the top ends off? As you can tell its my first bike, but loving the Orange.

 

[niknak]

bring me the barrell to hone out on tuesday ,, for you.. size 2 piston with 100hrs on

 

[mitchbase]

Will do mate, cheers.