Tecumseh engine - replace fuel line?

[Locker537]

I need to replace the fuel line on a Tecumseh HMSK80 powering a snowblower.

On other engines, you can pull the fuel line out from its location behind the flywheel. On this one, it's stuck. It appears it's pressed into a groove and it hard to remove without further disassembling the front cover, starter, and likely part of the controls.

I have been unsuccessful finding information about this on the internet and youtube.

Any suggestions?

 

[VT JD]

Try googling donyboy73

He has quite a few videos on snow-blower repairs with Tecumseh engines.

I think you will have to pull the front cover but it's not a big job.

 

[vtcat]

I can usually change it without taking the cover off,but I have been doing it for forty years.Take the engine shroud off to make easy for you.No need to take the flywheel off.Use the same type insulated black fuel line.I spray the outside of it with clear silicone to make it slide better.Flush the line before connecting to the carb.Good luck

 

[paulm12]

jam a dowel or piece of threaded rod into the old and new lines, tape with electrical tape, and pull through. Fuel lines on these Tecumseh motors are routed over a few metal tabs. The pic here is from a 5hp motor, but is similar. There are usually a few spots with resistance, but if you push and pull the lines, it will work. I pull through from the carb side to the tank side, not sure if this is easier or not. Start with longer new piece then cut to size after.

 

[EOC_Jason]

Oh yeah I had to do some work on one of those on an old chipper shredder. Paul has the right idea to feed it through. I ended up taking the front cover off just because mine needed some serious cleaning too. The pain was that the bolts that hold the cover on are also what hold the head in place and it took a while to find the torque spec chart online for that engine.

 

[shedfullatools]

The pain was that the bolts that hold the cover on are also what hold the head in place and it took a while to find the torque spec chart online for that engine.

Torque Spec?.....Toight enough

 

[67ghiaTIV]

I have done this a few times. 1/4" fuel line.
cut the head off a 1/4" x 2" bolt. Use it to join the old hose the new hose together. Tape it all up for a little extra holding power. Don't make it too fat....

Unbolt the starter, unbolt the recoil shroud, just need a enough room to push/pull the hose through.

Seems intimidating but 10 min later you'll have it done. By the way Donnyboy has some great videos

Jamie

 

[Locker537]

Thanks everyone!

I'll report back when I get it done!

 

[theoldwizard1]

Remember there are 2 DIFFERENT sizes of 1/4" Neoprene fuel hose. What you buy in an auto parts store is 5/8" OD. What you buy at a mower store is 1/2" OD.

This makes a BIG difference in this kind of application.

 

[kelpaso1]

Remember there are 2 DIFFERENT sizes of 1/4" Neoprene fuel hose. What you buy in an auto parts store is 5/8" OD. What you buy at a mower store is 1/2" OD.

This makes a BIG difference in this kind of application.

Yes not much clearance behind the flywheel.

To the OP, just take the starter/engine shroud off. Only 4 bolts and much easier to route the new line.

 

[laser3kw]

Remember there are 2 DIFFERENT sizes of 1/4" Neoprene fuel hose. What you buy in an auto parts store is 5/8" OD. What you buy at a mower store is 1/2" OD.

This makes a BIG difference in this kind of application.

I recently bought "1/4 gas line" - for small engines and it measured .475 od and .230 id (metric?). Needless to say it didn't fit. I then went to Advance auto and got their 1/4 fuel line, compared it to the OEM and measured it before I left. I did go back to the other place and show them that what they were selling was not correct.
As far as threading the new line, I have had the old line glue itself to the motor and simply tear apart when trying the pull through method. But start with the simplest method and be ready to go the distance if need be.

 

[rlitman]

Remember there are 2 DIFFERENT sizes of 1/4" Neoprene fuel hose. What you buy in an auto parts store is 5/8" OD. What you buy at a mower store is 1/2" OD.

This makes a BIG difference in this kind of application.

Why not use 1/4" ID tygon? That's even thinner.

 

[EOC_Jason]

When I did the fuel line on this Tecumseh on a chipper I added an in-line fuel filter since all there was is that screen in the tank. Just a little added insurance...

 

[paulm12]

use the proper fuel line for OPE, it is not expensive. I have heard that Tygon lines don't work well in this application.