samwisemcg Posted January 28, 2016 Report Share Posted January 28, 2016 I have noticed underneath my 88 TY 250 s there are 2 drain bolts.The first is in the middle at the rear of the engine, the Gearbox Drain Bolt. I have used this to drain the oil from the clutch and gearbox.The second bolt is smaller and underneath the crank. www.tytrials.co.uk list is as Crankcase Drain Bolt. What is this for? Does the crank have it's own oil, or is it for draining fuel oil which has found it's way into the crankcase?Finally I am pretty sure my rear shock has started to leak oil, is this servicable or should I look for a new unit.Thanks in advance Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 28, 2016 Report Share Posted January 28, 2016 The crankcase drain bolt usually is never used, but should the bike ever be submerged it sure is useful!. Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted January 28, 2016 Report Share Posted January 28, 2016 I stored a TY for a few years and filled the crankcase with oil to prevent corrosion. The bolt was useful when it came time to revive the bike. Quote Link to comment Share on other sites More sharing options...
samwisemcg Posted January 28, 2016 Author Report Share Posted January 28, 2016 Thanks All.I've drained the oil in the clutch/gearbox twice, as it was milky. I assumed this was condensation in the crankcase.I'll take the crankcase bolt out to check there isn't anything lurking in there.Cheers Quote Link to comment Share on other sites More sharing options...
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