Honda305.com Forum

A rule I find works well with diagnosing a problem is to retrace the preceding steps, where an inadvertent issue may have been introduced. You may have something intermittent, or your now refreshed contacts re-established proper path to ground. If you suspect a potential of a run away starter, rig u...

I doubt the new battery itself would cause this, as you suspect.

A common failure point for the wire harness (on many bikes) is the frame head wrap around. I would isolate and investigate/test that area first...

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Mike Stoic

honda305.com/CP77/registry

To pile on, in good company, I would add: check the needle position in the slide and the actual size of the carb jet. Make sure both are in spec. Also, you have a nicely painted frame, but the ground connection might be affected. During testing, I'd put some additional temporary ground wires from th...

Could be related to your throttle cable/s. I'd try to adjust for more cable slack and repeat the test. It's been a while, but I recall trying to diagnose a similar issue on my CP77, where the throttle cables were the cause of unexplained sporadic high idle.

Great research! And the puzzle is solved - or at least there is good guidance whether you decide to change the pattern or not.

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Michael

I don't make anything that isn't reversible, so I'll carefully store the “surprising” original parts.

A sensible approach!

Sky Fred: Vague recollection of some unusual shifting patterns on obscure (in the US) early models. This is very tenuous, but was discussed on the old VJMC mailing list - decades ago, by now. Bill Silver may be the best informed about this. I would definitely keep the bike original for the time bein...