going to how to set the valve lash on the Sato edge can apply to just about any four-stroke engine the first thing you want to do is have the right tools to do the job and for Sato engine the adjustment screw is a hex key so I've got a really small hex key wrench here I've got another small wrench here that actually loosens the adjuster or the lock nut but many Sato engines will actually come with this little spanner wrench which is what you used for that also so this is what I would use today but this little ignition wrench is actually a 5/32 and it's close enough it to actually be used there and then of course you need feeler gauges so the first thing when you set the valve lashes obviously the engine needs to be cold to do that and you want to set the lash with the piston at top dead center on the compression stroke so if I rotate this through my exhaust valves going down intake valves going down without coming into compression and you can feel a just prop over and then you want to just stop it right at the top now I've loosened my glow plug here so that the compression because the search engines got quite a bit of compression so I could easily turn it through there but you can also remove the plug and shine a light down there and just kind of watch you know rotate it back and forth until you see that the piston is at top dead centre so those are the things you have to have it cool to do this and being pistol needs to be on the compression stroke at top dead center so I have a set of feeler gauges I like to use they came with an old little s engine he was always came with a really nice set two gauges ones like a point o4 millimeter and was the point 1 millimeter now if the gauge that comes with a Sato engine is a point 1 millimeter I use the point one excuse me as my no go gauge Sato says you can just use that and use that gauge and just you know set it so that it just you nips on that but I kind of like to set my dowels a little bit tighter than that so I always use the point oh four millimeter and what I want to do is I want to set it so that my rocker arms are just nipping that so they're not nipping that so I'm gonna have to loosen this up I'm gonna start with the exhaust valve for no particular reason so I loosen up my lock nut I slide my fila gage in insert my allen wrench and I'll just kind of start rotating it and as I rotate it I'll just kind of feel to see and I start to nip I just want to barely be nipping this just start to feel a little bit of tension on it right there so I want to hold my wrench and then lock my nut down move that's a little bit too tight there let's go down here put this on the spanner on again open it up let's do this again it's too tight um I'm opening just a hair it's out right there right there it's just I'm in it I feel just a little bit of tension there okay I always do one valve at a time that will kind of rotate it through a few times and get it back to that point and tested and my point one is not really doing in there I mean I can kind of force it in there but if I just kind of lay it in there it's not really going in so that's good point one's sliding in the intake down very easily so let's do the intake valve break that loose with this feeler gauge in here throw the wrench across the table start to rotate it so we just feel it start to nip okay just starting to dip there that's not really go in let's rotate it through here a few times stop I like compression stroke at the top check it again and the valves are set so like I said this same procedure can be done on any four-stroke engine the key things are the engine must be cold when you do it have the right set of feeler gauges for your engine I know the sato guide uses the manual provides you with this point one and that's fine I just like to set my a little bit tighter I think that Enya engine uses a 0.05 maybe I'm not sure off the top of my head I've got them on here but the markings are all worn off of them but that's basically how you set the valve lash on an engine