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Author Topic: 1971 cb750 fuse?  (Read 3357 times)

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Offline bradengineer

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1971 cb750 fuse?
« on: April 01, 2010, 04:30:33 PM »
I bought this bike about 2 days ago. The previous owner had an automatic starter installed but wasn't working. It was basically just unhooked. I touched the two separated wires together and blew the main fuse, Now the problem. I've just about taken the whole bike apart searching for the fuses, no where to be found. I'm probably just an idiot but if someone could point me in the right direction, tell me where they're located, I would appreciate it. O yeah i do have the clymer manual but it's not in there.
thanks
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Offline Fabricator

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Re: 1971 cb750 fuse?
« Reply #1 on: April 01, 2010, 05:01:18 PM »
I'm no expert here, but mine ('73  750) are under the left cover.  My fuse box is in the upper left of that area, and has a rectangular black plastic cover.  It does not look like like a traditional fuse box, but open the lid and there you are.

Fabricator
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Offline fire113

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Re: 1971 cb750 fuse?
« Reply #2 on: April 01, 2010, 05:13:07 PM »
...under the left cover.

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Offline CycleRanger

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Re: 1971 cb750 fuse?
« Reply #3 on: April 01, 2010, 05:27:45 PM »
« Last Edit: April 01, 2010, 05:35:12 PM by CycleRanger »
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Offline Fabricator

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Re: 1971 cb750 fuse?
« Reply #4 on: April 01, 2010, 05:30:17 PM »
Welcome to the forums BTW.  What kind of engineer are you? 

Fabricator
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"When in doubt, gas it. This; to be honest, doesn't always solve the problem, but at least it ends the suspense." (Mark Gardiner from "Riding Man.")


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Offline OldSchool_IsCool

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Re: 1971 cb750 fuse?
« Reply #5 on: April 01, 2010, 05:39:16 PM »
Quote from: Fabricator on April 01, 2010, 05:30:17 PM
Welcome to the forums BTW.  What kind of engineer are you? 

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Offline bradengineer

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Re: 1971 cb750 fuse?
« Reply #6 on: April 01, 2010, 06:29:51 PM »
audio engineer, recording studios and live recording. I did look under the left cover, there's no rectangular cover or anything of the sort. I'll post a pic in a bit maybe that can help. Thanks for the replies though.
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Offline Magpie

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Re: 1971 cb750 fuse?
« Reply #7 on: April 01, 2010, 06:38:47 PM »
This a '70 fuse holder, same as my '71's. It's under the left side cover. It's a small black rubber enclosure. This is the only fuse on a stock  '71 to the best of my knowledge. There may be one somewhere installed by a previous owner.
Cliff.
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Offline bradengineer

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Re: 1971 cb750 fuse?
« Reply #8 on: April 01, 2010, 06:59:51 PM »
everything looks the same except the one part, weird.
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Offline Fabricator

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Re: 1971 cb750 fuse?
« Reply #9 on: April 02, 2010, 02:35:41 AM »
Hope you get your fuse issue solved.  My '73 died in the middle of a busy intersection after the main fuse fell apart...  Fortunatly, I had sufficent momentum to coast through, and get out of the 5:00 rush.  It was kind enough to quit 100' from our local auto parts store.   I NOW have spares AND tools. 

Old School:  How do you keep an ME out of a machine shop?  You keep 4 jaw chucks on all the machines   ;)

Fabricator
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"When in doubt, gas it. This; to be honest, doesn't always solve the problem, but at least it ends the suspense." (Mark Gardiner from "Riding Man.")


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Offline OldSchool_IsCool

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Re: 1971 cb750 fuse?
« Reply #10 on: April 02, 2010, 02:50:43 AM »
Quote from: Fabricator on April 02, 2010, 02:35:41 AM

Old School:  How do you keep an ME out of a machine shop?  You keep 4 jaw chucks on all the machines   ;)


 :D :D :D
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If you take care of it.
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Lot’s of things. You’ve been watching me.
Will you show me all of them?
Sure.
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Not if you have the right attitudes. It’s having the right attitudes that’s hard.

Offline madmtnmotors

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Re: 1971 cb750 fuse?
« Reply #11 on: April 02, 2010, 04:21:32 AM »
If the stock fuse box was removed hopefully the PO added some inline fuses. Otherwise, the smallest guage wire would likely act as a fusible link and burn in two. Had this happen to me on my old truck. The flaming insulation was dripping off the wire onto the dead grass under the the truck on the shoulder of the road and was on the verge of burning my truck to the ground! You should have seen me beating out the flaming wires and burning grass with my flip-flop.
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Offline andy750

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Re: 1971 cb750 fuse?
« Reply #12 on: April 02, 2010, 04:27:24 AM »
Looks like your wiring has been spliced by the PO so you want find the fuse you are looking for (see Magpies pic as this is how it should look like. You will either have to correct the wiring and install a new fuse or to remain stock get a new harness and start from there (may be helpful if the PO has spliced other wires).

good work
Andy
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Offline Spanner 1

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Re: 1971 cb750 fuse?
« Reply #13 on: April 02, 2010, 07:59:16 AM »
Brad, is that not an in-line fuse on the brown wire ( lower pic. ) ? Push end slightly and turn, should be a 15A fuse ( only ).
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Offline dusterdude

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Re: 1971 cb750 fuse?
« Reply #14 on: April 02, 2010, 04:24:44 PM »
what spanner said
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Offline cadler

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Re: 1971 cb750 fuse?
« Reply #15 on: May 14, 2012, 04:35:24 PM »
on the 71 it is under the left side cover with a fuse holder for extra fuses .
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