summit 670 rebuilt

[mr.rivard]

my friend has a 670 summit rebuilt start and runs well but wene you go to start it up after a little ridding it wont start up right away what could it be,coils?jets?or bad rebuild please help

 

[ratatatat]

They are famous for loading up. Do you need to hold the throttle open to start it? Always run a new plug. Sometime requires 2 per season depending on how much you ride. Never park / stop it sloping down. Always up or level. Check the float adjustment. Nature of the beast.

 

[0neoldfart]

They use a viton tipped needle/seat assembly, which don't seal well, especially when the sled idles. The cure is to obtain a set of inlet needle and seats from a 94-95 Mach. They are brass, and tend to seal better, thereby not flooding the float bowl. It's been a few years since I had a summit 670, so get your dealer to look it up of buy a 98 racing handbook - tons of info in there. Hope this helps