Hey there! so this website has been a WEALTH of information and help, thank you much motorcycle sages!
Anyway on to the bits!
I recently bought my first motorcycle a 1982 Honda CB650 standard US
picked it off from a previous manager/now friend for a sweet 200$, and he even threw in a helmet that cost as much as the bike did for me!
10k miles
it Was not running
He said he ran it for a little while, however it choked on the freeway one day for him and he decided to try some repair work of his own!
I'm not sure what he did exactly, but from what he's explained and what I found out, I'm more sure than he is about what he did.
Starting with the obvious, he cleaned and repainted the gas tank a solid black, and replaced the gas tank lock
The solenoid had also been replaced, apparently in a vain attempt to solve the lack of power problem
Apparently he couldnt "get the cables" to reach correctly after installing the solenoid
and the relay to starter motor cable was damaged, as the insulation was scraped off.
going with a tape-shrink-tape method as replacing the entire cable seems unnecessary because the strands are in tact and the cable wont be recieving constant load
Next issue, a fried wire, that is to be assumed why he "stopped messing with the thing" when he couldnt get the battery installed correctly
According to helpful advice on this forum, and a careful analysis of the wire diagrams
He must have wired the battery backwards and he fried the Clutch Switch Diode otherwise known by part name Silicon rectifier diode
Next on the list of my rebuild...
THE CARBS
I have been told they were leaking, which was my first hint at fuel system problems for that freeway death!
Breaking them down, I realized I do not have a manual available with the Keihin style carbs my bike has. Again back to using the parts inventory to give myself a little more room to see what's going on
the common service manual combined with a parts catalogue filled in a lot of the blanks for me!
I have a disc type carb without a diaphragm. I dont really know what type of carb I actually have, but I now know the only diaphram these have is in the throttle or something pump under carb number two.
Anyway I have a basic rebuild kit, and Thankfully I ordered it because MANZ these jets were in TERRIBLE CONDITION
even if they are salvage it's not worth the cleaning for me
three main jets/slow jet? whatever were covered in orange crust and took some force to break loose and even had to dig a little into the crust flush with the screw head bevel
these things may never have been taken apart
curiously enough, only one gasket was actually cracked!
the idle screws at the bottom of the bowls were crusted in, and the springs didnt release until sprayed out with carb cleaner
Oh and here's a tickler, not a single jet had an o-ring come out with it. actually I found maybe two o rings in total across the assembly that weren't on the drain screws
And now we are up to my most recent hiccup
after figuring out that these carbs have a drain specifically to remove the assembly (thank YouTube and common service manual)
that explained the orange buildup at the bottom of the bowls
crack loose the rusty drain plugs
every single one is perfectly shiny new UNTIL
the tip, which looks literally as if you were to make a bullet projectile out of the most porous rust, and put it in a brass casing.
so the threading and o-rings are doing just fine
but it is amazing how precise of a line that tip is just rusted out(back to never been taken apart in its lifetime)
so now I'm waiting to order a set of drain screws to replace those and finish the cleaning process
would LOVE to seperate the assembly and put these into a soda blaster and get them sparkling again. in between each unit it is so crusty and filthy and their just isnt much I can effectively do even on the surfaces I can reach
Their is a plastic kidney shaped piece inside the cap side of the carbs that I have yet been able to identify or find direct literature thereof. it has a notched leg that enters the groove of the piston(?) and the only thing troublesome for me is they all have this paper gasket underneath and #$%* all if I'm getting it new. otherwise I'm clueless to this armature and I will be replacing it as it was
FURTHER TROUBLES AND CONCERNS
1-no choke cable, definitely psyched to hold my hand in the middle of my engine assembly until the idle holds
2-i have no idea what other problems the electrical has in store
3-odometer was reported as not functioning, speedometer device at wheel seems suspicious too but tachometer seems possibly legit at engine
4-definitely needs a new chain and grease, possibly new sprockets. cant find what size chain to get. chain illiteracy is a growing problem these days
5. after rolling off a flat bed ramp, the front brake seems to have seized. To no surprise their doesnt seem to be any brake fluid either. The reservoir seems like it's ready to move on so I will let it take the cable with it and hope my pistons arent warped and fresh fluid will change the attitude
6)I have no idea or any excited interest in changing the front brakes, and I'm even less amused by entertaining the idea the rear brake is actually a brake. the manual tells me its simpler but I'm not buying it.
7.Its covered in cracked rusted chrome
8.I am a little isolated and without another vehicle, with very basic tools
All in all, the manuals leave you a little blind, but they do all seem to work on the same principles, just in some oddly different approaches
I'm really excited to get this thing together again
I would love to do a full restore and bring her further than she was out of the factory
but currently I just want/need to get this thing at a safe operating condition, and worry about investing after it gets me to places that make my pockets deeper
I've gone a little crazy with the knowledge cram and motorcycle mechanic crash course
but it's been really enjoyable despite the hangups and frustrations
and while I feel like every step I take I find a lot more ahead
I'm glad I'm not taking steps backwards and actually making headway at diagnosing problems, and solving them correctly!
without further ado
PHOTO DUMP
pretty much a quick photo overview of the work I've dug into, and some of the reference shots I've made for putting the carbs back together
definitely took out a few more pieces than my rebuild kit can replace
but I think the only pertinent replacement I dont have is the drain screws, check out that last image to see EXACTLY why these things were dripping gasoline (according to last owner)
let me say also it's amazing that everything electrical wise accumulatively can be replaced for at or below 600$
I want to run these carbs into pieces before spending 1200$ on fresh brand new carbs thoo
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