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Old 04-03-2012
irenemx's Avatar
irenemx irenemx is offline
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Join Date: Jan 2012
Location: Sydney NSW
Posts: 135
Post Symptoms of Valve Issues - WR250F 07

Whats are the symptoms of knowing when ur shims need to be inspected/adjusted/changed?

How much should i be expecting to pay for a valve inspection and shims if they need replacing, don't want to get ripped off that all.

I Have a WR250F 2007 with 2,500 kms - Never checked valves

Any feedback would be appreciated

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Old 04-03-2012
Battered Sav's Avatar
Battered Sav Battered Sav is offline
Foot long Sav
Join Date: Oct 2002
Location: Scaring little kids at fancy dress parties.
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Typically, worn vales show up as being very hard to start.

At 2500K's I'd say it would be a good idea to have them checked, saying that Yamaha's have a very good reputation as far as valves and wear are concerned.

If you have the bike serviced at the same time it shouldn't add too much to the cost and may be part of the service schedule anyway.

Hopefully someone who knows a bit more will reply.
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Old 04-03-2012
jbm jbm is offline
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Join Date: Nov 2008
Posts: 20
Have not had them close up on my wr250f but have had the problem on a previous bike. With no electric start the bike gets harder to start due to the loss of compression, I used to also notice soot on the rear gaurd from slight oil consumption.

They are not hard to check. Did mine yesterday and I am no mechanic. If you have the manual follow that, although there is no need to remove the radiator. If you can change a spark plug you should be able to check them. Adjusting them is a different issue as you need to play with the timing and be careful with tightening the cam caps.

No doubt in the Honda forum you will find more info on the symptoms of
valve issues
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Old 05-03-2012
Vertex Vertex is offline
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Join Date: Oct 2003
Location: Bayswater North, Vic
Posts: 835
to change valve shims would be around $100-150
'09 KTM200
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Old 05-03-2012
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karlmagoo karlmagoo is offline
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i get mine checked about every 1000klms, usually not neccesary as they are pretty good, but thats standard, manual states every 500klms, and id rather maintain the bike well, "prevention is better than cure", you,ll save yourself some coin by removing the side guards, seat and fuel tank and making sure its all clean under there otherwise your 1st 45mins @ $65 an hr will go into what is a basic exercise, take it in and should cost you no more than $65 unless the spanners they spin are made from gold, shouldnt take them an hr just for a quick insp/adjust if you have already removed the seat and plastics, shims cost about $5 if you need any, i believe (could well be wrong) the 1 that usually tightens up 1st might be................the centre exhaust maybe?

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