925 homelite rebuild questions

[Jim C]

My 925 sucked in a piece of metal and deeply scored the cylinder and wasted the rings and piston. I bought another used 925 with an OK cylinder. I also bought a 923? piston and rings new off ebay. The rings were much thicker than the original rings. Made my own gaskets. Cleaned and polished exhaust port and cylinder head. Used 800 grit sand paper to remove glaze from chrome lining on cylinder. Re-assembled everything. Compression seems real good. Here are my questions:

1. I can start the saw with starting fluid and can keep it going if I pull the choke on and off. It will not stay running with out help from the choke. Just before the saw lost its compression it was running fine so I do not think I need a carb rebuild. The molded fuel line into the tank broke so I used a piece of black rubber 5/32? fuel line I bought at an auto parts store. I reused the existing filter on the end of the line. What do guys think is stopping it from running?

2. The 925 came with an 8-tooth removable sprocket. When these saws run properly what bar and what type chain should I use? I have a 20-inch hard nose and a 24-inch roller tip bars. Both bars have chains that are the non skip types.

thanks in advance for all help
Jim

 

[rupedoggy]

I will take a stab at this and say I think your pulse hole is plugged. When you made your own gasket you may have plugged one of the small holes that the carburetor needs to get a signal from the crank case. This push/pull action from the signal pumps fuel. Lack of fuel is causing your problem. That is why it tries to run on choke. When you cut off enough air it will try to run on what little fuel it is getting. I also would not rule out a carburetor rebuild. When the carburetor dried out while waiting for the rebuild it may have hardened the diaphrams or curled the one way flaps, so that fuel flow is down to almost nothing. Mike

 

[Ax-man]

Might want to check the reeds in the intake to be sure nothing is stuck in there.

3/8 - 50 gauge is what is normally on these saws, either round or square chisel chain will get the job done, what ever trips your trigger. As far as bars go I like the roller nose over a hard nose for everyday type cutting.

Quit using the starting fluid to try and start the saw, all that time and work you put into that saw can go down the tubes in the blink of an eye causing lean seizure to your new parts using that stuff. Get a cheapie squirt bottle at the local hardware store and use mixed fuel to prime it.

Larry

 

[bugfart]

Replace the fuel filer, cheap at the auto parts store.
Enjoy...

 

[Jim C]

Thanks Guys

I will pull the carb and check that pulse hole, but I tried not to plug it. Next I will remove the filter (maybe try the filter first, less work). If its the filter do auto parts stores sell a filter that only has one connection? I also agree with not using starting fluid I just got frustrated after the rebuild and the saw not running.

As for chains, bars, and spockets: I do not know the right solution yet. I have a 7 & 8 tooth clutch, a 20-inch & 24 inch bar, two chains, non skip type. and two 82 cc homlite power heads. I was thinking of setting up the non-rebuilt 82cc powerheaad with the 8-tooth clutch and 20-inch bar and the rebuilt with the 7-tooth and 24-inch bar. What do you guys think?

Thanks
Jim

 

[Dadatwins]

Homie 925 will pull either 20" or 24" bars nicely. I had one set up with a 30" bar and full teeth and it was fine. Those were great saws, I would say one of the best Homelite made and one of my personal favorites. Always wished they could have figured an anti-vibe system for that saw, hope you get it running soon.

 

[bugfart]

Believe it or not I ordered gel grips for my 925's.
I'm putting them on this week. People riding these ski-do's and stuff are giving them cudos.

The sprocket match-up sounds great.

Believe it or not I happen to be looking for a set of bars that you described. I can tell you it's a 9.5mm slot with 3/8 .050 70 for the 20 inch and 81 links for the 24.

Do the fuel filter regardless, the entire fuel system or none of it has been a great policy for me. Also, peace of mind when doing it right. At about any auto parts store you can fit hose to connect to their selection of filters. Real innexpensive. The line in the tank is the biggest culprit I hate to tell ya. However, I brought it to the parts store and found a line that came out of the tank tight and connected perfectly to the external tank fitting. So now, I just rip that crap out and replace it. The trick is to feed it in from the outside (premeasure from the old tank line) till it's about flush and then put the filter on. You wouldnt know it was done like that to see the saw, it looks factory, works great!