Old troy-built tiller with 3 hp tecumseh

[KRS]

Good evening all,

My folks' tiller is leaking oil out of the throttle linkage hole in the block; it's never done that before that I'm aware of.

The tiller surges and won't run steady, so I was going to inspect the carb. However while looking at it I noticed that in 3 minutes of running at WOT it had given up approx 1/4 cup of oil. I shut it down immediately.

Any thoughts?

KRS

 

[DJ]

Re: Old troy-built tiller with 3 hp tecumseh

Air filter clogged??

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Evening DJ.

Air filter looks fairly good. Is there any way that might cause it to leak oil from the governor arm?

 

[DJ]

Re: Old troy-built tiller with 3 hp tecumseh

Evening DJ.

Air filter looks fairly good. Is there any way that might cause it to leak oil from the governor arm?

You've got crankcase pressure. There is also a breather on the backside of the engine. If it's clogged, it will blow oil.

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Morning DJ,

There is a breather tube coming from the engine case and going into the carb. I had it out a few months ago to check it, and it was clean.

Just thinking out loud now... if the carb hole that the vent tube goes into was clogged, it would not vent properly.

I'll check the backside of the engine.

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Here's a pic of the governor lever and that tube,

 

[RogersJetboat454]

Re: Old troy-built tiller with 3 hp tecumseh

KRS,
May also be worth pulling the rectangular cover off that the breather tube is attached to (the breather box over the valve springs/stems). If I remember correctly most of those covers had a set up inside them that functions like a PCV valve. It that were to get mucked up or jammed it would certainly cause your issues.

It should look similar to this; http://cgi.ebay.com/Tecumseh-breather-body-assembly-28423-/140510967368

 

[windy5849]

Re: Old troy-built tiller with 3 hp tecumseh

I agree that the breather could be blocked causing increased pressure.Also check the oil level,the needle valve leaking in the carb and filling the crankcase with gas is a common problem.The oil level may be to high and thinned by the leaking gas.

 

[seaboo]

Re: Old troy-built tiller with 3 hp tecumseh

I agree that the breather could be blocked causing increased pressure.Also check the oil level,the needle valve leaking in the carb and filling the crankcase with gas is a common problem.The oil level may be to high and thinned by the leaking gas.

+1 Check the oil level, bet it is too full (either of oil or oil gas mix or oil/water mix

 

[rbh]

Re: Old troy-built tiller with 3 hp tecumseh

Is the shafts rubber seal cracked/falling apart???

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Not sure how the seal gets installed, from the outside? Never taken it out or seen one.

No repair manual either.

KRS

 

[mla2ofus]

Re: Old troy-built tiller with 3 hp tecumseh

i doubt it could put gas in the crankcase due to the design of the intake manifold. gas would run out the air filter first. my money's on being overfilled w/ oil.
mike

 

[windy5849]

Re: Old troy-built tiller with 3 hp tecumseh

This is a link to a 3 hp tecumseh flat head engine.Parts 106 to 108 on the IPL show no gasket on the govenor shaft.

http://www.outdoordistributors.com/pdf/Tecumseh/TECUMSEH-MODEL-H30-35000F-PARTS-LIST.pdf

 

[Tim Frank]

Re: Old troy-built tiller with 3 hp tecumseh

Not sure how the seal gets installed, from the outside? Never taken it out or seen one.

No repair manual either.

KRS

If you aren't sorted out by the weekend I'll bring my repair manual back from the cottage and we can see if there are any revelations in it...

 

[windy5849]

Re: Old troy-built tiller with 3 hp tecumseh

Here is a link to the service manual for your engine.Hope this helps.

http://www.barrettsmallengine.com/manual/tecumsehlheadmanual.pdf

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Thank you.

I'll check: oil level, breather, breater port on carb

Should get into it tonight (had to go out of town last night),

Bought 40 bags of manure yesterday, so need to get the tiller going.

KRS

 

[RogersJetboat454]

Re: Old troy-built tiller with 3 hp tecumseh

Bought 40 bags of manure yesterday, so need to get the tiller going.

Sounds like a crappy job!

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Thank you for the links and references, it is a BIG help,

KRS

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Sounds like a crappy job!

.

 

[KRS]

Re: Old troy-built tiller with 3 hp tecumseh

Have to remove carb to access crank vent plate.

So, pulling carb I noticed.... THERE'S A SCREW MISSING!!!!