Honda DOHC Custom 750/900/1000
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1979 to 1983 DOHC CB750/900/1000/1100 Honda Custom: Forums

WWW.CB750C.COM :: View topic - Hi All! New 1981 CB900C Owner here.

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jwh20
On a roll
On a roll



Joined: Dec 27, 2016
Posts: 171
Location: Indianapolis, Indiana

PostPosted: Tue Dec 27, 2016 12:00 pm Reply with quote Back to top

Christmas gift to myself! 1981 CB900C in really nice shape:

https://s3.amazonaws.com/jwhance/cb900c.jpg

A couple of issues that I understand are relatively common:

1) The rear brake pedal is seized. Seems to be corrosion in the pivot. I had to unbolt the rear caliper banjo bolt to back it off the trailer.

2) There is oil all over the front of the engine. As best I can tell the valve cover is leaking.

Other than that it starts right up even in the cold weather that we typically get here in Indiana in late December. Looking forward to cleaning this beauty up, putting some non-dry rot tires on her, and getting her on the road.

This is my first "vintage" bike.

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1981 Honda CB900C
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pd750
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Joined: Aug 01, 2007
Posts: 23194
Location: Queen Creek , Arizona

PostPosted: Tue Dec 27, 2016 1:26 pm Reply with quote Back to top

Welcome to the site jwh20 ... Smile

Nice looking bike . After the few repairs , it should be fun you .

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sunshine New members , Please read and understand :

Please put the year and model of your bike in the signature section on your profile page and set "Always attach signature " to YES .
NOTE : In order for your signature to show up in posts you also have to check the box that's labeled "Attach signature (signatures can be changed in profile)" , just below the Quick Reply box at the bottom of threads , when making your next post . This only has to be done once . Thanks

New Members Read This Thread :
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&p=98405#98405

Picture Posting :
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=11546

Checklist :
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&p=68384
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Every man makes his own chains .
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A candle loses nothing by lighting another candle ...

"The only thing that you have which can never be replaced or recovered is your time. Use it well." Author Unknown .
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1982 CB750C - Sold > Looking for my next one .
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genesound
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Joined: Jul 24, 2007
Posts: 41231
Location: Studio City, CA

PostPosted: Tue Dec 27, 2016 1:50 pm Reply with quote Back to top

Welcome here wave

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NMT - New Member's Thread, a Must Read, click here!!! - Information For New and Veteran Members.
Contains SITE RULES, how to enter required bike information in your signature, thread and picture posting...
Also some important DOHC wrenching tips, and some other information.
Kindly read this linked thread with the rules before posting
pictures or asking lots of questions that are already answered in it.

ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
For Honda Shop Manuals (FSM), Click Here.
Click here to go fiche at Parts Pit Stop.
Click here to go fiche at Partzilla.
Sean's Bike Maintenance Checklist Click!
MacGregor Carb Rebuilding Manual, Click Here.
⊳⊳⊳⊳Learn to use the Search Engine Click Here.⊲⊲⊲⊲
Be sure to use Copper Anti-Seize on your Spark Plug Threads!
To Fix and Better Understand Your DOHC Honda Charging System, Click Here.

ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
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___ImageCB1000C __ Image ___ CB1100FImage__
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Duke
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Joined: Sep 27, 2009
Posts: 13086
Location: ABQ, NM, USA

PostPosted: Tue Dec 27, 2016 2:22 pm Reply with quote Back to top

Welcome

Check the oil cooler lines and the cam chain tensioner bolt area in addition to the valve cover for oil leaks.

That is a nice looking bike indeed.

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Duke

1981 CB900 Custom

New Members Thread. Learn how to use the search engine, post proper sized pictures and get answers to very common questions that have been asked numerous times: Click Here

Find the FSM (factory service manual) and other tech docs here: Click Here

Have problems with your charging system?: Click Here

SeanG´s new to you bike Checklist (make your 30+ year old bike tip top before you ride it): Click Here

SeanG´s Excellent Carb Manual And Rebuild Guide: Click Here

Find out what Petcock fits your tank!! Just because you have a 1981 bike doesn't always mean it has a 1981 tank: Click Here

Buy Procom Ignitors directly from Procom´s website: Click Here

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RIP Oliver
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holysmokes
Admin



Joined: Jul 25, 2007
Posts: 35632
Location: ridge road springfield nova scotia

PostPosted: Thu Dec 29, 2016 8:07 am Reply with quote Back to top

Engine shampoo will clean up the engine. Don't start until the engine is completely dry or you can crack the coils

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On a steel horse i ride
.mm to inch conversion chart
http://www.carolynrelei.com/inchchart.htm
picture posting
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=127
link to manuals + tech threads>
http://www.cb750c.com/modules.php?name=Forums&file=viewforum&f=5
valve adjust thread>
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=12173&highlight=shim
check charging video
https://www.youtube.com/watch?v=YvRe9g_2gyM
carb cleaning thread>
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=13611&highlight=carb
verifying ground
https://www.youtube.com/watch?v=SyNYlaoInUE
checking stator
https://www.youtube.com/watch?v=5v2LtHlvcqI
checking r/r
https://www.youtube.com/watch?v=kDx3zgOLShY
checking rotor ohms thread>
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=1477&highlight=ohms
torque values thread >
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&p=81382#81382

http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=52
http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=6935&highlight=shadow
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