MikeRC
ArboristSite Lurker
"If it sounds too good to be true it probably is."
FB Marketplace CS-590 "Currently does not run" $100
Figured i'd risked more money on worse gambles, so I bought it, hoping for the best, expecting the worst.
I am not a tree guy, no living/income involved. I'm retired, and like messing with small power equipment.
It pulled over, decomp valve was in, comp. was a little low. Didn't make any untoward banging or clanking noises, so I bought it.
Got it home, started cleaning/ disassembly. Compression was 60 (with decomp valve pulled out). Could see pretty bad scoring on piston through exhaust port, intake side looked pretty OK. In fact, could still see crosshatch in intake side of piston. Today pulled the cylinder, it's toast. Rod has a good amount of side to side play, nothing up & down, slight bit of rocking motion. P&V test before disassembly was perfect. Feels like a slight tight spot in one of the crank bearings, not sure if it's a bearing, or something else rotational. Bearings feel smooth except for the one slight tight spot. So here are the questions:
1. How much side play is supposed to be in the big end rod brg? Rod does not look discolored, but no spec is given in the service manual I rcvd here.
2. From pix, what is best guess at what happened? Seller said it was NOT straight gassed, but that's my guess.
3. Limiter caps are intact, don't look like they were ever touched. Lean from factory?
4. How stupid must I be to put $175 parts (p/c, gasket & brake handle) into a $100 saw that I don't really need, just because? (Hoping the crank is OK!!??) If I needed it, a new one is $450 at the Big Orange store.
5. Oh yeah, the brake handle is broken.
6. Should I sell it as a parts saw, or should I disassemble completely & sell parts on Flea-Bay?
Thanks for input/replies. Mike
FB Marketplace CS-590 "Currently does not run" $100
Figured i'd risked more money on worse gambles, so I bought it, hoping for the best, expecting the worst.
I am not a tree guy, no living/income involved. I'm retired, and like messing with small power equipment.
It pulled over, decomp valve was in, comp. was a little low. Didn't make any untoward banging or clanking noises, so I bought it.
Got it home, started cleaning/ disassembly. Compression was 60 (with decomp valve pulled out). Could see pretty bad scoring on piston through exhaust port, intake side looked pretty OK. In fact, could still see crosshatch in intake side of piston. Today pulled the cylinder, it's toast. Rod has a good amount of side to side play, nothing up & down, slight bit of rocking motion. P&V test before disassembly was perfect. Feels like a slight tight spot in one of the crank bearings, not sure if it's a bearing, or something else rotational. Bearings feel smooth except for the one slight tight spot. So here are the questions:
1. How much side play is supposed to be in the big end rod brg? Rod does not look discolored, but no spec is given in the service manual I rcvd here.
2. From pix, what is best guess at what happened? Seller said it was NOT straight gassed, but that's my guess.
3. Limiter caps are intact, don't look like they were ever touched. Lean from factory?
4. How stupid must I be to put $175 parts (p/c, gasket & brake handle) into a $100 saw that I don't really need, just because? (Hoping the crank is OK!!??) If I needed it, a new one is $450 at the Big Orange store.
5. Oh yeah, the brake handle is broken.
6. Should I sell it as a parts saw, or should I disassemble completely & sell parts on Flea-Bay?
Thanks for input/replies. Mike