I've been having problems with the aftermarket carb on my 83. Loss of power at higher speeds and sometimes it sputters and jerks while riding. Not a severe loss of power, but it's noticeable going up hill, slows to 25-30 mph depending on the length and grade of the hill.
After reading through tons of previous posts on here, I think I've identified the problem, but I'm left with more questions because I don't really understand all this talk about jets and needles.
I replaced the original carb with a Runtong brand that I got from eaby, a rebuild kit for the original was the same price as the replacement so I figured I'd spend the amount and not have to rebuild the old one. After doing some reading I've come to the conclusion the replacement is a 17mm carb when the original was a 13mm. I've also learned that it probably has the wrongs jets and possibly the wrong needle for a 72cc.
So here are my questions ...
Can I keep the current 17mm carb on there? Will putting in the proper jets and needle in make it run better/normal? Or do I just need to buy a proper 13mm carb or rebuild the original one that I've already got?
Thanks!
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html
