jpcjguy
New OPE Member
- Local time
- 3:22 PM
- User ID
- 26272
- Joined
- Mar 7, 2023
- Messages
- 23
- Reaction score
- 1
- Location
- Richmond, VA
Hi Everyone,
New here and have learned a lot! I am a home hobbyist and I picked up this Husqvarna K760 Cut-Off saw off marketplace for $100. Guy said the cord broke on the recoil and he fixed it once with something he had laying around and then that broke and he gave up on it. He said it has been sitting for a few years in his garage and he was cleaning out.
I took a chance and grabbed it, hoping it was just the carb.
I had some universal starter rope from Lowes laying around and I cut it to 45" and put it on. Would not start. Took out the plug and inspected it and cleaned it - looked ok. still no luck. Did not feel a ton of resistance on the cord - got me wondering about the compression. Turns out, after some research (now), concrete dust can eat these machines... great. Oh well. I end up taking the carb off and apart - a little dirty but I have seen worse. Cleaned it up as much as a could - did not mess with welch plugs. Put it all together and tried again. Must have pulled the cord 100 times. On 2 occasions it appeared to start (for as second or two) but then just died. Damn. Tried again (100 times - and probably flooded it - because that is how I roll ) Then I thought, let me check compression (waited to the end to try that because not sure I wanted the answer). Got out my OTC 5605 Deluxe Compression Tester Kit and made sure the decompression valve was pushed in. Pulled it 5 times, 90ish psi. Damn. Did this three more times and averaged between 85 and 95. Uh-oh. Now I did not add any oil into the cylinder. The engine is cold. but I am not optimistic.
I took my inspection camera (harbor freight) and took some pics through the spark plug hole. I will be honest - I am not good (or have the experience) to determine cylinder/piston wall or ring condition by looking at it - unless it is blatantly obvious. I did not see anything blatant but I could be way off here.
In the next post I will include some pics using my iphone through the muffler port that did not come out very well - which I did not realize until I put it back together.
So what do you all think?
I could do cylinder head kit, or just piston and rings or just rings......not sure. OR could it be carb related still? Appears to get fuel fine - pushed the primer bulb and fuel shot out of the hose when it was off the carb (sprayed me nicely! haha!) I did notice that when I pressed the primer bulb, it took a while to come back into shape - not sure what that is about - since the fuel delivery is good I think the tank filter is ok (still need to check), so maybe a check valve?
I don't really need this saw. I could move it along and more than likely get my money back. But I do like a challenge and it would add to my experience. I do have a railroad tie wall that will need to be converted to retaining wall block in the next 2-3 years so technically I could hang on to it and use it.
I can get Stens cylinder head kit for around $100. or cheaper by just doing piston and/or rings. But then a carb on top of it.
I don't want to sink a ton of money into this - thinking if I could get a good running saw for another $100, I would have got a good deal ($200 total). Could get my money back and then some. Or just throw it back up on marketplace and easily get my $100 back and walk away...
Pics of the saw
New here and have learned a lot! I am a home hobbyist and I picked up this Husqvarna K760 Cut-Off saw off marketplace for $100. Guy said the cord broke on the recoil and he fixed it once with something he had laying around and then that broke and he gave up on it. He said it has been sitting for a few years in his garage and he was cleaning out.
I took a chance and grabbed it, hoping it was just the carb.
I had some universal starter rope from Lowes laying around and I cut it to 45" and put it on. Would not start. Took out the plug and inspected it and cleaned it - looked ok. still no luck. Did not feel a ton of resistance on the cord - got me wondering about the compression. Turns out, after some research (now), concrete dust can eat these machines... great. Oh well. I end up taking the carb off and apart - a little dirty but I have seen worse. Cleaned it up as much as a could - did not mess with welch plugs. Put it all together and tried again. Must have pulled the cord 100 times. On 2 occasions it appeared to start (for as second or two) but then just died. Damn. Tried again (100 times - and probably flooded it - because that is how I roll ) Then I thought, let me check compression (waited to the end to try that because not sure I wanted the answer). Got out my OTC 5605 Deluxe Compression Tester Kit and made sure the decompression valve was pushed in. Pulled it 5 times, 90ish psi. Damn. Did this three more times and averaged between 85 and 95. Uh-oh. Now I did not add any oil into the cylinder. The engine is cold. but I am not optimistic.
I took my inspection camera (harbor freight) and took some pics through the spark plug hole. I will be honest - I am not good (or have the experience) to determine cylinder/piston wall or ring condition by looking at it - unless it is blatantly obvious. I did not see anything blatant but I could be way off here.
In the next post I will include some pics using my iphone through the muffler port that did not come out very well - which I did not realize until I put it back together.
So what do you all think?
I could do cylinder head kit, or just piston and rings or just rings......not sure. OR could it be carb related still? Appears to get fuel fine - pushed the primer bulb and fuel shot out of the hose when it was off the carb (sprayed me nicely! haha!) I did notice that when I pressed the primer bulb, it took a while to come back into shape - not sure what that is about - since the fuel delivery is good I think the tank filter is ok (still need to check), so maybe a check valve?
I don't really need this saw. I could move it along and more than likely get my money back. But I do like a challenge and it would add to my experience. I do have a railroad tie wall that will need to be converted to retaining wall block in the next 2-3 years so technically I could hang on to it and use it.
I can get Stens cylinder head kit for around $100. or cheaper by just doing piston and/or rings. But then a carb on top of it.
I don't want to sink a ton of money into this - thinking if I could get a good running saw for another $100, I would have got a good deal ($200 total). Could get my money back and then some. Or just throw it back up on marketplace and easily get my $100 back and walk away...
Pics of the saw