857 14 #1 Posted July 10, 2018 Hi Can any one help me with an exploded parts diagram of a K181 engine please. Thank you. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,633 #2 Posted July 10, 2018 Will a parts list work? Click on the pictures Service manual Operator manual Garry 1 Share this post Link to post Share on other sites
857 14 #3 Posted July 15, 2018 Thank you very much Garry. Most of the information I needed I found, But I couldn't find how far the exhaust valve should lift on the second compression stroke, the reason I ask is before I found the correct valve stem cap which should be .006 I had reground the valve that every one I spoke to said the gap should be .015 which I did, but is WRONG so I am getting less lift by .010 how important is the gap on the lift? I hope some one can help. Thank you. Terry Share this post Link to post Share on other sites
rmaynard 14,986 #4 Posted July 15, 2018 According to all the info that I have, the exhaust gap is .015. I have rebuilt K-181's, and K-161's and that is the gap that I use, per the Kohler manual. You must be looking at the intake spec. Share this post Link to post Share on other sites
857 14 #5 Posted July 16, 2018 Thank you maynard for your reply. I think I was looking at the valve to guide clearance. Rgds Terry Share this post Link to post Share on other sites
857 14 #6 Posted July 25, 2018 Hi all I am still having trouble to get my K181S to run, it started with suddenly pumping out white smoke,I mean a lot. I then took the head off reground the valves and adjusted the valve gap 17thou exhaust and 6 thou inlet, assembled it still not running spitting out petrol from the exhaust, I removed the head again to find petrol on top of the piston, what I dont understand is on the third stroke after compression the exhaust valve is lifting a few thou then closes before total TDC. What can make the exhaust lift a few thou when it shouldnt? I have downloaded the full service manual and cant find anything about this. Advice would be appreciated Rgds Terry Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,633 #7 Posted July 25, 2018 Sounds like you are describing the ACR (Automatic compression release) Section 9 in this later service manual Garry 1 Share this post Link to post Share on other sites
857 14 #8 Posted July 25, 2018 Thank you Garry once again what would us novices do without you. The manual solves one problem I can forget. I still cannot get it to fire I have done so far. It turns over very smooth no knocks etc. Plenty of spark and fuel. Ground the valves and set the gap. Set the points gap. New plug. Set spark plug gap. New head gasket and others. Set the governor to the cross shaft spec as manual . I have 60Lb compression which goes up to 75Lb when engine is turned off. Have I missed something obvious? Help. Rgds Terry Share this post Link to post Share on other sites
953 nut 52,655 #9 Posted July 26, 2018 9 hours ago, 857 said: it still not running spitting out petrol from the exhaust, Have you solved the fuel problem? Sounds like it is flooding, perhaps the needle and seat need to be replaced or the float is set too high. Share this post Link to post Share on other sites
857 14 #10 Posted July 26, 2018 Yes cured petrol problem but it actually was oil petrol mix, I have now removed the piston and put each ring back in turn and leveled each with the piston, the ring gapes are 1st compression ring 15thou, 2nd compression is 40thou and the oil scraper is 80thou or slightly more as as my feeler gauges only add up to 80 in total. I hope this is my problem, I think I will try a new set of std rings as there appears to be no other problem with cylinder and piston do you experts think the same? Thanks Terry Share this post Link to post Share on other sites
stevasaurus 22,295 #11 Posted July 26, 2018 See if this thread triggers anything. Share this post Link to post Share on other sites
857 14 #12 Posted July 29, 2018 The fuel problem I found out when I put the remainder from a 20 Ltr jerry can into my car it would not start, the fuel was old and contaminated. I have tried the UK without success for rings, who would you say in the US? Terry Share this post Link to post Share on other sites
stevasaurus 22,295 #13 Posted July 29, 2018 try this link...I re-built 2 K-181's with these parts. https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=kohler+k-181+piston+rings&_sacat=0 Share this post Link to post Share on other sites