- Joined
- Feb 17, 2009
- Messages
- 16,699
- Reaction score
- 15,944
- Location
- Beautiful Rockbound Coast of Maine
So....haven't done one of these in a while but I have a friend that really likes the old Silver Tops so I picked one to give him next time showed up. It had been sitting quite a while and had some visible issues (and some invisible ones too)......good start to a project though. Been working on client's saw the last week or so and getting them ready to go home. Got to looking at the 621 and got to thinking that this guy is super generous...and a wicked good guy to boot......I shouldn't give him an old broke down Silver Top 621....just ain't right. So I started the process of breaking the saw down, cleaning all the parts and seeing what it needed....this took a while....the fuel tank was in rough shape.....had four wallered out bolt holes (5 actually, I found out tonight) and the piston wasn't bad but had some carbon steaks......as I worked along it struck me that I might kill two birds with one stone........fix this legendary saw for a good guy AND do a build thread for those who have an interest in these old war horses and might need/like some reference as to what goes where and why. This is not going to be as thorough as some of my other (extinct since the hack) build threads nor is this a museum piece (though I like things as pretty as possible with the parts I have on hand). This is just a description, with some pics of a tear down and rebuild......hopefully resulting in a fine running example of the 621 Jonsereds....the father of all modern chainsaws. These were a cut above nearly or all others at the time of their coming into being.....one of the most pleasant saws to run with good cut rates and super torque for a 56 cc saw. Get your popcorn popped, beverages at the ready and we'll head into the past.