Author Topic: 750F thread? (Read 165409 times)

Don R · « **Reply #125 on:** November 27, 2009, 01:31:59 PM »

Head, Search for my post- 75F headlight switch and wiring diagram questions. There is a link to a good wiring diagram. Yes they do have a front mount wiring box, mine was broken too. Even with this box the headlight bucket is full. I am also searching for a left sidecover. Replace the rubber grommets to keep from breaking them and a little silicone grease helps too.

Head · « **Reply #126 on:** November 27, 2009, 02:29:48 PM »

My manuals are showing 75F to 77F ( one diagram ) as the same and then another for the 78F, all with 3 fuse fuse box. The guy I got the bike from said that the couple wires with the ends cut off was done for the front turn signals. With all the extra parts it came with there was what appears to me the original wire harness with a few ends cut. But what he didn't say was that I think he could work out the electrical problems.
(I have done this many times on KO's-K3's,sorting out any electric problems) But this one is really starting to try my patience, I sorted out most of it except for no running lights, including the rear running light,and the rear running light is flashing with the turn signals. I completely opened both the wire harnesses traced,inspected,tested with meters to no avail. They don't look like the switches were taken apart, That seems to be my next step to see if they got buggered with. I do not have the box,the 3 screws that hold the indicator panel on. I have the side covers but have not figured out why they were spot sanded? I have one good side cover emblem and the 6 others with the pins broke off. I have a set of side cover emblems but I think they are off a 78F (solid gold),but the pin spacing is different and don't really want to drill new hole in the covers. But yes I would to to by your extra box,electric tape works fine some times. I picked up so many SOHC parts and 3 bikes from this guy that (a overly stuffed 8ft pick up truck of parts that I can't even go thru the boxes to see what I have yet, besides a K2,K4,and an F3
moters all with good compression,7 banks of early K carbs and the carbs for the F3, Head

jdubb1977 · « **Reply #127 on:** November 27, 2009, 04:09:57 PM »

F owners unite! It's definitely nice to have a dedicated F thread. I bought my 1976 CB750F last April, and have been slowly but surely getting it together. Bought it running fairly well, with some little glitches and safety hazards courtesy of the PO. It was more or less stock, minus the Lester mags and Kerker pipe, and some daytona bars.

The first image is pretty much how I got it, with the addition of some new side covers and clip-ons.

The next 3 images are it's current state. I kept my handlebar clamps and cut my old bars down to just fit. I used some plugs from a bicycle for the ends, and now I have a place for my insurance and registration.

Still some work to do (wire up the brake/tail light, attach rear blinkers, etc.), but I'm happy for my first go 'round on something like this!

Head · « **Reply #128 on:** November 27, 2009, 05:07:03 PM »

On this site I went to manuals and found the 750F supplement and looking at the wiring diagram's it shows the F'S with a 3 fuse fuse box, Mine holds 4 fuses,So is the diagram with 3 fuses any where pertinent? Head

Jerry Rxman Griffin aka MuthaF'er · « **Reply #129 on:** November 27, 2009, 05:35:05 PM »

Head,

See if you can find the diagrams Don is referring to and go from there. I scanned and posted one somewhere for SRust but he'd tell you the other one someone got to him was better quality. The 75 & 76 are identical so forget about the 77/78. Ignore the 3 slot fuse box. Our bike and a couple others have the 5 slot. I kinda like the extra 2 slots for spares. Seems we need spares! Also use these guys http://www.vintageconnections.com/ and Z1 has color coded wiring. My Clymers, Chilton, CycleServ, and Honda manuals all have the 75/76 F diagram. Plus my original owners manual has a pull out too.

About the side cover emblems, you may still be able to get those from Honda. 87127-392-000. Be sure to get new nuts for them too. Order from ServiceHonda.com online and get them probably about $24 each. Retail over $30.00. I bought 2 sets a few years back figuring they wouldn't be available like the tank emblems. The 78 F side cover emblems are a different style/font than the 75/76/77. Your's don't sound correct for a F. The 3 correct screws for the indicator panel around the ignition are available from Honda too.

No problem on getting you the connector box. I just don't know when I'm breaking it down.

Head · « **Reply #130 on:** November 27, 2009, 06:12:52 PM »

When you break it down that will be soon enough, I am building a KO, starting work on a 1981 cb900f, frame off restoration of 77 Goldwing, Next couple days receiving a 1975 Goldwing #92 build, So I have things to occupy my time for a while. Thanks to you & Don R for the useful info.
Head

BeSeeingYou · « **Reply #131 on:** November 27, 2009, 08:09:18 PM »

Here is the address for the easy to read wiring diagrams. Courtesy of member 75750SS.

http://home.comcast.net/~bkirchhoff1/site/?/photos/

BeSeeingYou · « **Reply #132 on:** November 27, 2009, 08:31:58 PM »

Aarrrgggh! I cracked my left side cover yesterday. At least the crack is to the rear of the mounting tab so I may be able to repair it. Who designed these, they are pretty lame.

I am going to try some JB Weld in the crack and a layer of glass cloth and epoxy on the backside. I know epoxy can be hit or miss on plastic, anyone have any better ideas?

Retro Rocket · « **Reply #133 on:** November 27, 2009, 09:37:54 PM »

If you are going to epoxy it, make sure you really scuff the surface up or it will delaminate .

Mick

Jerry Rxman Griffin aka MuthaF'er · « **Reply #134 on:** November 27, 2009, 10:15:11 PM »

http://lpmreplicaparts.com/ I hear they are quite good but not the original color.

MUCH cheaper than my NOS set I got last year. Get fresh new grommets to hold them in place and CAREFULLY pull them off with 1 finger/whole hand in front of the tab and 1 behind. I usually do my bottom first then proceed to the top. The grommets stiffen and shrink with time making it difficult to get the covers on or off. Plus you're more likely to have a side cover blow off with old grommets. I keep a small amount of lubricant on my fresh grommets too.

Good luck on the repair Steve.

ofreen · « **Reply #135 on:** November 28, 2009, 08:59:58 AM »

Quote from: Jerry Rxman Griffin on November 27, 2009, 10:15:11 PM

Get fresh new grommets to hold them in place and CAREFULLY pull them off with 1 finger/whole hand in front of the tab and 1 behind.

Good advice about getting new grommets.

It is best to get behind the tab and push it out rather than pulling on the side cover. The tabs won't break if you do that. You can use a screwdriver, but flat piece of steel with a 90 in it works better, especially for the bottom ones.

turkey4me · « **Reply #136 on:** November 29, 2009, 06:08:15 PM »

Great thread... Here is my 750F that I put on the road last summer. Working on building a seat this winter. Hope the photo shows up.

Don R · « **Reply #137 on:** November 29, 2009, 06:16:50 PM »

New grommets and a little silicone grease on the tabs. There is info here about fusing the crack with acetone. they used a small applicator bottle to the wet the crack and weld it closed. The acetone apparently melts the ABS plastic. They then used some scrap shavings from sidecover material and acetone to make a bondo like filler to apply to the backside. I never tried it but it sounds right.

cudjo · « **Reply #138 on:** December 10, 2009, 05:08:47 PM »

Hey Guys, I know that I started this thread.
but the time has come for me to sell my bike.

I moved to cali, and now where I used to not need a car, I need 2!
I am hoping to get one of my favorite older cars and use that as a bit of a project, for now. (93-94 BMW 740

)

even though i plan to go DUC when its time to get a new bike, I plan on keeping up on the 750F forum, I love these bikes.

if you or anyone that you know is looking, and in the S. Cali area...

http://losangeles.craigslist.org/sfv/mcy/1504573605.html

Tobias · « **Reply #139 on:** December 27, 2009, 07:51:02 PM »

Cool thread...just found it and posting so I can find it again....about to rip my 77 f2 up since my head sucks...will post some pics from start and hope there is a finish.

Don R · « **Reply #140 on:** December 27, 2009, 11:06:41 PM »

Are you having problems with the head or just worried about what you've read?

Tobias · « **Reply #141 on:** December 28, 2009, 07:39:56 AM »

Oh it's smokes a bit when I start it and if it idles too long it will smoke more...and it seems to have lost some power now. I don't think the problems are so bad as what i've read or these engines wouldn't be around anymore. Generally my bike is dirty and has a few oil leaks and it would be fun to learn the next stage of taking it all apart. I did manage to ride it for a year after getting it with locked up brakes and not even a hint of life.

bender01 · « **Reply #142 on:** January 03, 2010, 04:21:29 PM »

Heres mine washed this afternoon. Its ready to ride but im waiting till feb or march to get it it legal. Hopefully replace the tires as they cuold be old. I put 26 miles on it a few weeks ago.Seems fine. I had to much air in the forks. Around 12 psi. See the weird air guage on the fork. It splits to the other side with a small line. Notice the seat trim is missing and the recover was poor. Ive hacked it down some. I think they used a ducktail foam under it. I missed a NOS stock yellow cowl seat and trim for 225 yesterday On e-bay. I shouldnt of waited. Id like a new seat and trim. Also for some reason I have the wrong tank badges.If anyone has those items im missing please send me a message. Its also missing the black plastic pieces on the front Com-star.

Tobias · « **Reply #143 on:** January 05, 2010, 10:18:59 AM »

Can anyone tell me if the big ugly brake/passenger footrest bracket on a 77-78 SS can be replaced ith the smaller bracket from a 76?

dagersh · « **Reply #144 on:** January 05, 2010, 11:41:17 AM »

Here is my '76 F1. Simply an amazing bike to ride. Does everything very, very well.

MCRider · « **Reply #145 on:** January 05, 2010, 12:39:17 PM »

Quote from: srust58 on November 27, 2009, 08:31:58 PM

Aarrrgggh! I cracked my left side cover yesterday. At least the crack is to the rear of the mounting tab so I may be able to repair it. Who designed these, they are pretty lame. I am going to try some JB Weld in the crack and a layer of glass cloth and epoxy on the backside. I know epoxy can be hit or miss on plastic, anyone have any better ideas?

I had this guy fix mine. I think you'll find virtually nothing sticks to that old plastic. Highly recommended unless you are just committed to doing it yourself.

http://expertplasticwelding.com/

Don R · « **Reply #146 on:** January 05, 2010, 04:33:14 PM »

Quote from: dagersh on January 05, 2010, 11:41:17 AM

Here is my '76 F1. Simply an amazing bike to ride. Does everything very, very well.

I have one just like it. I only got to ride a little before the weather turned bad but I did like it so far. I still need a left side cover, be careful with yours, apparently they break easily.

B Raady · « **Reply #147 on:** January 05, 2010, 06:27:30 PM »

Howdy from Oklahoma! Just bought my '77 F2 last weekend. Needs some love, but I got plenty to give. Apparently it had been bored to 836, so that was a nice bonus.
It's running pretty rich, so I need to learn how to tune these carbs before the weather gets better. I'd like to learn and tune the bike myself. Can anybody point me in the right direction?
I'll have pictures as soon as I get a decent camera. First thing's first...

Tobias · « **Reply #148 on:** January 05, 2010, 06:49:22 PM »

I just bought a manual and cleaned the crap out out of the carbs...put rebuild kits in and set it all to spec with 120 jets for the air pods...my engine was all stock I think....it ran good till it died!

B Raady · « **Reply #149 on:** January 05, 2010, 06:56:44 PM »

Quote from: Tobias on January 05, 2010, 06:49:22 PM

I just bought a manual and cleaned the crap out out of the carbs...put rebuild kits in and set it all to spec with 120 jets for the air pods...my engine was all stock I think....it ran good till it died!

I don't know exactly what jets the guy used, but I'm sure you would need bigger jets for the Big Bore kit, right? He was a honda mechanic, so I bet he had an idea of what he was doing. He told me he was running it rich because he didn't have the tools to tune it properly at the time. He said he'd rather run it a little rich rather than lean so he wouldn't hurt anything.

I don't know, I just want it to run correctly and don't know exactly how to do that....yet.

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Author Topic: 750F thread? (Read 165409 times)