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COMMUNITY : FORUMS : TECH


Calling everyone with small engines experiance! (Video update)

Ok I decided to rip into my tractor today because I was bored. I knew if I ripped into the actual cylinder that it would probably look pretty horrible with the way I drive my tractor. Needless to say I was right...

I want someone to tell me what I can do with this!! I have it sitting open like it is in the pictures right now and I don't wanna put it back together until someone looks at it!. Also, how do I check that the valves are working right?

Can someone PLEASE look at this asap?? Also does anyone know what I could clean the cylinder top and the cover with?? Would varsol paint thinner be a bad idea because of the gasket??


sort by: active | newest | oldest
LetsExplodeSomething says: May 15, 2010. 6:44 PM
 if its sputtering more than likely its the carb try messing with the screws and throttle control a little. It may just need a little tuning.  Or if you've done repairs to it in the past you may not have placed the cam and/or timing gears back in the case properly
8
Punkguyta (author) says: May 15, 2010. 8:47 PM
 I'm actually starting to think it might need a new camshaft....
LetsExplodeSomething says: May 17, 2010. 6:09 PM
 how so gears slipping?

49
lemonie says: May 11, 2010. 12:02 PM
I say just put it back together. If there wasn't anything wrong with it leave it alone. Varsol should be OK if you don't let it penetrate anything, if it runs fine your valves must be OK.

L
8
Punkguyta (author) says: May 11, 2010. 7:47 PM
 Ohhhh but there is LOTS wrong with this engine. For one, I have to constantly adjust the bowl screw, and I can run the machine for 2 hours cutting grass, but if I start revving it (I have a manual throttle lever for driving :P) then it starts sputtering out on me until I adjust the screw AGAIN.

I really have no idea what the hell is wrong with the engine. I tried varsol on the head and the cylinder plate and it did like nothing.. maybe if they were soaked but I doubt even then it would help, I need the power of tools!
49
lemonie says: May 12, 2010. 10:33 AM
This is a fuel problem I think - it's the carb' that needs attention.

L
8
Punkguyta (author) says: May 12, 2010. 3:53 PM
 I'm gonna post up a youtube video in a little bit, keep checking back lemonie, or I'll PM you maybe.
3
NachoMahma says: May 12, 2010. 11:21 AM
.  Yep. Sounds like a fuel/carb problem to me, too.
107
killerjackalope says: May 10, 2010. 11:15 AM
Missing the pictures...  
8
Punkguyta (author) says: May 10, 2010. 11:19 AM
 Now is it?!?
107
killerjackalope says: May 10, 2010. 11:30 AM
Yeah they're up now.
8
Punkguyta (author) says: May 10, 2010. 11:33 AM
 Do you have any engine experiance? I know how to do a lot of repairs but I can't say I've ever had an engine apart like this.....
107
killerjackalope says: May 11, 2010. 11:28 AM
Not much on this side of things, done the odd thing like swap gasket plates but that's desperately simple... Is the black all soot or is it other stuff? Also is the cylinder shiny on the walls or is it black as well? 
8
Punkguyta (author) says: May 11, 2010. 7:43 PM
 Oh, yeah I thought about a new gasket, but yeah that's all soot the black stuff on the head and on the cylinder plate. Otherwise the cylinder walls are shiny and they have a good cross-hatch.
107
killerjackalope says: May 12, 2010. 9:37 AM
Is the carburettor in decent shape? If not that could be causing the soot, especially if it's running really rich or the chokes not turning off... 
3
NachoMahma says: May 11, 2010. 6:07 PM
.  Other than some scratches on the cylinder wall (which you probably don't have the tools to fix), I don't see anything wrong. Get a new head gasket and put it back together. Other than cleaning the old gasket off the cylinder and head, don't clean anything inside the head - you will only make things worse.
8
Punkguyta (author) says: May 11, 2010. 7:45 PM
 The cylinder wall was actually exceptionally smooth and shiny! I did not expect this.

I kinda put it back together with the original gasket (which btw is like 20+ years old plus it looked like it has some kind of silver thermal compound smeared all over it too, what a mess).

I tried cleaning the top of the cylinder head with my dremel and a brass wire wheel but it did like absolutely nothing but spin there. That carbon is BAKED on.
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