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Old 11-29-2011 | 07:06 AM
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BobV1700
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From: NottinghamNottinghamshire, UNITED KINGDOM
Default RE: YS 110s problem

Pete  <div>
</div><div>Thanks for your reply above............I've now removed all valve parts from head and note that the valve seats appear to be OK, and having removed the prop driver Ive now taken out crank shaft. The crankshaft journals/bearing surfaces are Ok with no scoring or obvious wear but the rear bearing has a definite 'notch'  moment on turning. The front bearing seems fine. You remarked on the crankcase pressure regulator. Ive tried putting a fuel line on the nipple but cannot breath thru it at all (the front and rear bearings are still in place) so its clearly blocked. Any thoughts?</div><div>
</div><div>To properly flush out any minute particle debris, I'm still assuming that the glow plug element broke at some point as I cannot find any other explanation,  how would you suggest I proceed from here? Just wash everything in warm soapy water and then thoroughly dry every thing with a hairdryer? and obviously fit all new parts as required.</div><div>
</div><div>How do I clean the carbon off the valve stems and seats, someone suggests regrinding the seats again, if so how?</div><div>
</div><div>Part list so far.</div><div>
</div><div>Piston and ring, New Cylinder Head, Rear C/Shaft bearing, O ring set, Gasket set.</div><div>
</div><div>Thanks for you time...........</div><div>
</div><div>Regards Bob Vaughan</div><div>
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