Dony, Great video!!! You're right you would never suspect anything was wrong by just looking at the piston and wall, by moving the piston side to side you can clearly see the problem. Thanks for the great tips!! Mike
Piston skirts collapse from heat over time, too. It isn't always from wear. The bottom on that engine looks great. Aftermarket piston and cylinder kits are the way to go with these older saws. They aren't quite as good as OEM, but they aren't bad either.
Two weeks ago I completely tore down 2 Dolmar weedeaters and rebuilt them. The carb gasket kits for both weedeaters were 160.00. We have a Dolmar parts supplier about 30 miles west from me. Very expensive toys!
Forget the wobbly piston. Either the nicasil bore is worn or its not. Take off the ring and spec it against a new ring. Check end gap on the ring in the bore, it should be somewhere between 0.3 and 0.7mm. If it's bigger then try a new ring and see if it's nearer the correct measurement. If the new ring seems better maybe treat it to a new piston. The arrow points to the exhaust. New cylinder and piston cost would potentially make it unrepairable
You can buy a new piston, seals, and carb kit and have a good saw for a $100.00 it would well worth it. The cylinder looks fine, just clean it and hone it.
Thanks for letting me know, I was thinking about getting the Dolmar or an Echo PB255 blower. I may go with the Echo though because there's a lot more service dealers for Echo than there is Dolmar
Hey Dony would you recommend Dolmar? I'm looking at a Dolmar PB-251.4 leaf blower on eBay, it will only be used around my house nothing commercial at all. It's $189 and it's a 4 cycle engine, it's also sold under the Makita name.
I had to fit a new cylinder kit onto a Stihl hedge trimmer because the compression was down to 75 PSI with the old rings & even with new rings,I was unsure if it would even run as the compression was at 97 PSI. Motors such as that are really temperamental because I've heard of some engines that don't run at below 100 PSI whereas some will run poorly,I will not service a motor which has under 100 PSI of compression unless I fix that up. The original cylinder may not have had that much piston slap in it but it may have been oval in shape & the rings may not have sealed off fully,it had 105 PSI before being run in then 124 PSI afterwards. As far as Dolmar lawn equipment goes,in Australia, they service their own in house rather than outsource the warranty repairs to a service agent, they are a division of Makita !!!! We'd only repair their power tools but we'd repair Ryobis lawn equipment as well as their power tools !!!!
after a seizure I have done the repairs on my sach 120, it has a lot of compression, plenty of spark and is getting fuel but won't fire. when it seized could the timing have changed?
I Remember About Dolmer PS540 Chainsaw Went Offline. There Is Any Damage Inside The Engine Parts. If It Is. It Needs Replace It. The Chainsaw Problems To Open The Cover Take Look The Engine Parts. If You All Don't See Any Damage The Engine. That Is Fine. When You All Saw The Engine Parts Was Damaged. It Needs To Replace It. The Chainsaw Will Be Back Online. Good To Go.
@@kellyronaghan5587 that's just not true. Dolmar and Husky is on the same level as stihl when it comes to reliability. You just need to compared professional machine lineup. A dolmar PS6100 will last a long time
its this CS the Dolmar sachs 111? looks the same. I have one of those and it has been imposible to remove the clutch. I locked the piston with a piece of rope and hit the clutch clockwise with a hammer and screwdriver but still impossible to remove. I dont want to damage it going too crazy with the hammer and screwD, any ideas??
Nope, it's left hand thread. Plastic wedge in exhaust port then use appropriate tool to put pressure on clutch, don't try to hammer it, just pressure. ( former dolmar uk tech manager)
Tenho um motosserra Dolmar PS-34 e a pessoa que tem os parafusos adonde aperta a lâmina e a corrente estragada oe ditos parafusos já não apertam a lâmina. gostaria que enformacem honde posso conseguir esta pessa que é de plástico. Obrigado
I had no idea that dolmar was a german made saw like stihl. Interesting because I'm a 100% stihl fan. Not just saying this because I'm a stihl fan but Germany can make a much better saw than Sweden!