2001 PT425 Kohler CH25 Oil Leak - Pull The Engine

[arto98607]

Originally factory fitted Diesel model would probably be better choice but may be hard to justify the cost?

 

[MossRoad]

Lot of plumbing going on in there.

I don't know what fittings you have there. The Terramite has a bunch of 1/4 NPT stuff that can be capped with plumbing fittings so long as you don't let any galvanzing flake off into the system. Some other members found a set of standard hydraulic caps/plugs on Amazon as I recall.

It's begging for a diesel repower, too.

I dislike diesel.

Can't stand the smell of it if it gets on my clothes. And, I've never failed to get a gas engine to start in cold weather. The little CH25 Kohler has started as low as -15F with just a shot of starting fluid.

Diesels, on the other hand... I used to work with a lot of them when I worked at the airport back in the 70s and 80s. Gelled fuel was the biggest problem. All required pre-heating. All cost a lot more, etc.

Now it does not get as cold here as it used to, but I need it to start if it does. I don't want to have to treat fuel, pre-heat, etc.

When you think about a machine like the PT425, all it is is an engine spinning pumps. 25HP is 25HP, no matter what makes it. The pumps do not know. I'll lose traction and spin the tires way before the engine bogs down.

In my opinion... hahahahaha, I see no need for a diesel for my own uses.

For that matter, my first tractor was an IH2500b tractor loader. 8000# machine. 50PTO hp. Cab. Dedicated loader on the front and 3pt hitch on the rear. It was hydrostatic and had a gas engine.

Did I mention I dislike diesel?

 

[MTGreen]

Lot of plumbing going on in there.

I don't know what fittings you have there. The Terramite has a bunch of 1/4 NPT stuff that can be capped with plumbing fittings so long as you don't let any galvanzing flake off into the system. Some other members found a set of standard hydraulic caps/plugs on Amazon as I recall.

It's begging for a diesel repower, too.

Brass plumbing fittings avoid the galvanized flaking potential

 

[2manyrocks]

I dislike diesel.

Can't stand the smell of it if it gets on my clothes. And, I've never failed to get a gas engine to start in cold weather. The little CH25 Kohler has started as low as -15F with just a shot of starting fluid.

Diesels, on the other hand... I used to work with a lot of them when I worked at the airport back in the 70s and 80s. Gelled fuel was the biggest problem. All required pre-heating. All cost a lot more, etc.

Now it does not get as cold here as it used to, but I need it to start if it does. I don't want to have to treat fuel, pre-heat, etc.

When you think about a machine like the PT425, all it is is an engine spinning pumps. 25HP is 25HP, no matter what makes it. The pumps do not know. I'll lose traction and spin the tires way before the engine bogs down.

In my opinion... hahahahaha, I see no need for a diesel for my own uses.

For that matter, my first tractor was an IH2500b tractor loader. 8000# machine. 50PTO hp. Cab. Dedicated loader on the front and 3pt hitch on the rear. It was hydrostatic and had a gas engine.

Did I mention I dislike diesel?

Yes, but some day you may see the light.

 

[MTGreen]

Yes, but some day you may see the light.

I'm on the no-more-carburators crusade myself. Diesel or fuel injection from here on out. Not quite there yet but getting closer

 

[arto98607]

..................Snip......................


Pulled the muffler. 4 nuts. Didn't break the exhaust studs this time.

................Snip...............

I have switched to using brass nuts in all exhaust manifolds etc. I've had to take apart. On some applications I've used two nuts together for locking & extra strength.

So far it has worked out pretty good if or when having to reopen them, sometimes years later....

 

[ponytug]

As far as the plug and cap set....

'someone' on this forum purchased one, and I'm kinda hoping they'll chime in with details.

If not, I'll search TBN for it.

Here you go;

Amazon.com

It has been great to have for me.

All the best,

Peter

 

[MossRoad]

Here you go;

Amazon.com

It has been great to have for me.

All the best,

Peter

That's the one! Thank you.

 

[ponytug]

You are welcome!

Happy to help.

All the best,

Peter

 

[2manyrocks]

So how goes finding the leak?

FWIW, I've read a number of people on other websites who say that the Kohler CH25 is the best air cooled gas engine in that HP range.