Homelite 750: What to do with it??

[cbfarmall]

Picked up a 750 as either a project or a parts saw for my 650. Got it tore down and found the following.

--First, no compression.

--Second, loose flywheel side bearing, actually caused by the bearing hammering out the case. The 2 retainers inside the crankcase were loose. Bearing isn't real smooth either.

--Third, gouged thin-ring piston. Surprisingly, the cylinder looks fine. No marks corresponding to the gouges on the piston.

--Fourth, the standard torn intake boot. I have yet to work on a Homelite that didn't have a torn boot.

I have a NOS 2100S piston that I thought might fit. The 2 pistons have the same diameter, but that's where the similarities end.

If I can find a piston/rings and a good flywheel case, I should be able to salvage this saw. If not, I have a nice selection of parts for the 650. (I already stole the muffler cover.)

What do you think?

Chris B.

 

[RaisedByWolves]

Send it to me.




.

 

[lesorubcheek]

hmmmm,
Intake boots are still around and wouldn't be a problem. I haven't looked, but I bet the bearing could be found also. If the case where the bearing sits is eat out badly, I doubt there's any choice other than find a replacement. Maybe an otherwise junked saw will pop up and you'll have what you need.

As for the piston and rings.... ohhhh how I would love to find a source for a couple of these! I bet there's some out there, but I haven't found them. I know the part number for rings on the super 2100 and the 750 are the same except for an 'A' at the end of the 750 part, but not sure if they are interchangeable or not. As you said, pistons are completely different design. I have a 750 that could really use a piston and rings also. When I got it, the rings were stuck, and I managed to unstick them, so it may be useable, but the piston has some scoring that's a bit rough.

I'd say keep it around a wait awhile to see what pops up. You never know when someone here may read the post and have what you need, or up it pops on eBay, or sitting in some out of the way saw shop.

Dan

 

[cbfarmall]

Send it to me.

No, no. Like I said, lots of parts for my 650.

Chris B.

Did you get that BP655 done? I'm still looking for the original air cleaner setup.

 

[cbfarmall]

Les,

I'm not worried about the bearing or boot. And maybe I can do something with the case. But where in the world am I going to find a piston?

Chris B.

 

[lesorubcheek]

I've even pondered having a custom piston made, but due to the unique bearing configuration, I don't know if its possible and even if so I bet it would be at least a few hundred dollars with all of the machining required. Heck, I can't even find new thin rings let alone a piston! The sad part is when I look at a 1980s price list and see a new 750 piston would have been less than $50. Oh to be able to go back in time!

Dan

 

[Dadatwins]

I would keep it also, parts are getting harder and harder to find for those saws, but they are out there. There seems to be a good supply of the carb boots. It took months just to find a muffler for my 650 and then 2 showed up on ebay. Now I am looking for a muffler cover. That series is one of my favorite saw. Have fun with it.

 

[Al Smith]

Les,

I'm not worried about the bearing or boot. And maybe I can do something with the case. But where in the world am I going to find a piston?

Chris B.

Chris,on that case,two methods.1: If the case isn't too wallered out,raise the metal on the inside of the bearing pocket with a center punch,effectively knurling the metal.Reassemble using a type of compound made by loc-tite,I think they call it "slip fit" .I did a similar fix on an 048 Stihl and it worked great.

If the bearing pocket is too trashed you could bore it over sized and press fit a bushing then shrink fit the bearing.Loc-tite the retaining screws.The piston,I don't have a clue.