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       #Post#: 55745--------------------------------------------------
       Solo 680 piston 
       By: Riddler1100 Date: March 19, 2015, 6:54 pm
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       Hi I'm trying to find a solo 680 piston, may possibly need
       cylinder head also haven't pulled it apart yet. I'm located in
       Australia
       #Post#: 55746--------------------------------------------------
       Re: Solo 680 piston 
       By: Chainsawrepair Date: March 19, 2015, 7:05 pm
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       Ideas
       [quote author=adam32 link=topic=2714.msg29252#msg29252
       date=1386884928]
       I've put 064 pistons in Solo 680's and just recently was toying
       with a BB044 piston and one other that I can't remember in a
       stroked 680...
       [/quote]
       Adam is the guy into the solo
       #Post#: 55757--------------------------------------------------
       Re: Solo 680 piston 
       By: adam32 Date: March 19, 2015, 8:43 pm
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       Yup. A Stihl 064 piston fits with a little work to clear the rod
       end.
       #Post#: 55764--------------------------------------------------
       Re: Solo 680 piston 
       By: Riddler1100 Date: March 20, 2015, 1:52 am
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       What kind of modifying is required?? To use the 064 piston
       #Post#: 55778--------------------------------------------------
       Re: Solo 680 piston 
       By: adam32 Date: March 20, 2015, 9:10 am
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       [quote author=Riddler1100 link=topic=4778.msg55764#msg55764
       date=1426834370]
       What kind of modifying is required?? To use the 064 piston
       [/quote]
       Use a flat file and relieve the inside of the piston bosses
       where the rod goes in. The rod on the 680 is wider then the
       Stihl. Pretty easy, takes about 15 minutes. Its hard to explain
       but once you see it its is pretty obvious.
       #Post#: 55781--------------------------------------------------
       Re: Solo 680 piston 
       By: Chainsawrepair Date: March 20, 2015, 11:44 am
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       I have to open wrist pin bosses to run the stihl 066 pistons in
       my poulan 505 for same reason. or if you use the 064 in the 475.
       It is easy to do. If I can do it anyone can.
       #Post#: 55806--------------------------------------------------
       Re: Solo 680 piston 
       By: farmboy Date: March 20, 2015, 8:12 pm
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       [quote author=adam32 link=topic=4778.msg55757#msg55757
       date=1426815790]
       Yup. A Stihl 064 piston fits with a little work to clear the rod
       end.
       [/quote]
       Thanks for info I've got a pretty nice 680 I bought for the coil
       has scored piston.  Didn't need the coil after all the plug boot
       had come off the wire just far enough no spark.  Bought it to
       fix my very low hr. 603.
       Shep
       #Post#: 55810--------------------------------------------------
       Re: Solo 680 piston 
       By: Riddler1100 Date: March 21, 2015, 2:07 am
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       Thanks guys, I'm assuming the piston bosses are fairly easy to
       just file... Is there a certain "clearance" the pin bosses
       should be from the crank rod end?? Or does it have to be
       reasonably tight fit??
       Thanks again guys
       #Post#: 55822--------------------------------------------------
       Re: Solo 680 piston 
       By: aclarke Date: March 21, 2015, 9:50 am
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       A small gap on each side to accommodate any misalignment of the
       cylinder as well as allowing fuel/oil mix to the wrist pin
       bearing would be ideal.
       #Post#: 55824--------------------------------------------------
       Re: Solo 680 piston 
       By: Chainsawrepair Date: March 21, 2015, 10:57 am
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       Anyone got solo 680 piston specs.
       There is a guy talking to OP and me saying he used a 272 piston
       in a 680.
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