How does cylinder size reduce life span of a chain saw? Sorry but this is not true. Engine life has nothing to do with the rest of the saw. The engines wear out with use. The larger the cc, the more obvious they are used by professionals and the more hours they achieve on the clock. The more hours equals to more wear on the piston rings, piston and the coating of the cylinder (either hard chrome or nikasil). This wear is what ends the life span of the chain saw.
Of course you can rebuild etc., but rebuilding is absolutely senseless for a professional to have it done at a store. Shop rates will be at least 50-70%(just the work hours!) the cost of a brand new saw! And then you have only replaced a cylinder and piston.
I understand completely that the rest of the 6400 is overbuilt strength wise for a 64cc saw, but that will not guarentee that the saw will live one more day.
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If you use bigger cilinder.......proportionally reduce the life
of the saw."
It wasn't a proper wording, it is true. Sorry about my English.
But, Iam not agree with you.
Of course it is all about working hours! I was talking about how can affect much power to the major parts of the machine.
The major parts of the machine is not only piston, rings, and cylinder.
Crankshaft,crank rod......etc.
For example, there is 2 piece of same metal. You take a hammer and start to hit them.
The first you hit with the half of your power, the second you hit with full of your power.
What do you think,which will break down earlier..????
"...the 6400 is overbuilt strength wise for a 64cc saw, but that will not guarentee that the saw will live one more day."
I think, yes.....definitely guarantee longer life of the same if you use with 64 ccm,and not 79 ccm, specialy not with 84.6 ccm! / big bore set/
