What's on your bench?

[merc_man]

Had the 026 on the bench to fix the recoil. It wasnt retracting in properly. Gave it a clean and sprayed a little wd40 in ther and seems good now.

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[Redfin]

Nothing, I sanded it all off and am starting anew.

 

[czar800]

Finished up with my 064.

Thanks @Duke Thieroff

 

[PA Dan]

Finished up with my 064.

Thanks @Duke Thieroff


View attachment 329061

View attachment 329062

Nice job Mike!

 

[I Know Something]

Working on and mostly off on a Mcculloch Power Mac 6 for the last 16 months. Been doing everything I and the internet can think of to get it to run. At WOT it runs ok. At idle. Instantly dies. Finally broke down and pulled it fully apart. And found this. I can see scuff on the cylinder. Cant feel it though. Piston on the other hand...........

Off to see if I can find one. And affordably.

Edit. Yeah, I had the cylinder flipped around. Double checked my self. And now to find a cylinder too! Great.

 

[Stevetheboatguy]

440 waiting for pick up. And three saws venting before getting boxed up and shipped to their new homes.

Steven

 

[PA Dan]

440 waiting for pick up. And three saws venting before getting boxed up and shipped to their new home.

Steven

There ya go buddy get them moved!

 

[Stevetheboatguy]

Plugged up 440 carb that just went back with it's owner. And a mint super low hour 562 that broke the rod.



I need to get some wood cut, but the weather and time have not been on my side.



Steven

 

[WillG]

Ryobi inverter generator that wouldn't run. Had a bad Chinese Torch plug which I replaced with an NGK. Also had a stopped up main jet. Cut a new carb to intake gasket as well. Runs great now. Stabilized the fuel for him as well.

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[RI Chevy]

How did you determine the plug was bad Will? What does the electrode look like?

 

[big_eddy]

I have a gx390 clone that continues to challenge me. The carb float was sticking down, and it was running rich and pumping gas into the sump (electric fuel pump, on when key is on)
After several failed float fix attempts, I replaced the carb with another cheapo (its a clone engine after all !)
Even after, it was still running rich and carboning up the plug. Put a new NGK BPR6ES and it ran great for about 4 weeks then quit again. Plug black and carboned up again. Another new plug and running again.
It looks like this new carb has an adjustable high jet so I will try leaning it up a touch, but I am embarrassed to say that despite have tuned dozens of 2 strokes, I don’t know how to tune a simple float carb 4 stroke that has to run properly everywhere between idle and pedal-to-the-metal.

Any pointers to get me started? Or do I just keep turning the jet in a 1/8 turn at a time until it seems to run well at full load?


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[Johnmn]

snowmobile engine, has a bad rod bearing. Reassembling so owner can sell the sled as is


Here is what a 661 piston looks like after a tank of straight gas. Frickin thing still runs.

 

[decableguy2000]

I have a gx390 clone that continues to challenge me. The carb float was sticking down, and it was running rich and pumping gas into the sump (electric fuel pump, on when key is on)
After several failed float fix attempts, I replaced the carb with another cheapo (its a clone engine after all !)
Even after, it was still running rich and carboning up the plug. Put a new NGK BPR6ES and it ran great for about 4 weeks then quit again. Plug black and carboned up again. Another new plug and running again.
It looks like this new carb has an adjustable high jet so I will try leaning it up a touch, but I am embarrassed to say that despite have tuned dozens of 2 strokes, I don’t know how to tune a simple float carb 4 stroke that has to run properly everywhere between idle and pedal-to-the-metal.

Any pointers to get me started? Or do I just keep turning the jet in a 1/8 turn at a time until it seems to run well at full load?

You may need a fuel pressure regulator.

 

[big_eddy]

You may need a fuel pressure regulator.

The thought has crossed my mind. The same pump has been on there for 10+ years, working fine until recently, but I was starting to think it may have somehow changed. Perhaps it has a built in regulator that has seized up or???

I may connect a pressure gauge to it and dead head it and see what pressure it builds. More than 15 or so and it’s the problem.


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[WillG]

How did you determine the plug was bad Will? What does the electrode look like?

It was pretty black and nasty looking. Wouldn't fire on a whiff or carb cleaner. Replaced the plug and it fired on carb cleaner

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[WillG]

Been servicing some commercial equipment!

BR550 got a valve adjustment, new fuel lines, plug, fuel filters and air filter.

Wacker Neuson plate compactor got a new plug, oil change and air filter service

Husqvarna FS400LV got a new plug, oil change and air filter service. The owner is going to get me a new hose and quick connect for the garden hose connection for the blade cooling.

The plate compactor has a Honda GX160 on it and the FS400LV has a GX390 on it.

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[BlackCoffin]

Waiting to find an oil gear to test run her, but she is together and runs! Was a box of parts. Timing advance, ported and runs a few more rpm’s now. Even got a new oem piston dropped in it.

 

[Woodslasher]

Waiting to find an oil gear to test run her, but she is together and runs! Was a box of parts. Timing advance, ported and runs a few more rpm’s now. Even got a new oem piston dropped in it.View attachment 329870View attachment 329871View attachment 329872

@EvilRoySlade might have an oiler gear.

 

[farminkarman]

Cut the squish on a used Mahle decomp 288xp jug tonight. Not sure what I am doing with this one yet.

 

[PA Dan]

Cut the squish on a used Mahle decomp 288xp jug tonight. Not sure what I am doing with this one yet.View attachment 329902

Looks good!