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1976 CB550F1 (what have I let myself in for) Project
eight0:
Hi All,
I am a new member and having posted on the introductions board I thought I should officially start my project thread.
(Shamelessly copied and pasted from my intorduction post)
I have not had chance to go over the bike properly yet, I was told it has compression but I haven't tried to turn it over yet as I want to soak some oil in the barrels first.
Wires are a rats nest, missing one coil, clutch is very stiff - could just be the cable, Carbs are all there and are unseazed, though I took one of the bowls off and its full of varnish. Tank has a big dent on one side, possibly a hole, need to do some more poking with a screwdriver. Wheels look un-dented and appear straight. Headers are ok and un-dented but the collector is toast and the exhaust is missing
All in all looks like I've got a big project on my hands. The clock is showing 56k so I think I may need to do a full engine rebuild on this one - which for me is going to be interesting as I've only ever rebuilt carbs before. I have restored one bike before - A Yamaha XS2 and although I did a lot of work on it,nit was running when I got it so I didn't delve into the engine further than replacing seals and rebuilding the carbs so I'm going to need a lot of help from the gentlefolk of this forum to guide me through it.
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On the advice from members in my introduction post, I am going to try and start the bike before I go any further. I've got the carbs ready to clean and have started collecting bits I need.
So far I have:
another coil to replace the missing one
Some cheap oil
oil filters
new plugs
new plug caps
cheap battery
compression tester
aux fuel tank
I'll need to temporarily wire it up to get the bike running as the loom is a mess. I'm no electrician but after a bit of head scratching I drew up this diagram.. will it work? I'm not worried about wiring in the alternator or reg/rec, (I don't think it need them)? as I just want to see if it will run. I wanted to check it has oil pressure which is why I added the light and thought I may as well add the kill switch and starter switch in too.
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I'll give the carbs a clean up this week, not a full strip down just yet - just enough to hopefully get it running.
SteveW:
Make sure the negative lead of the battery has a very clean connection to earth.
Mine didn't so the current went down the small earth wire in the main loom and melted it.
eight0:
--- Quote from: SteveW on December 03, 2018, 03:46:36 PM ---Make sure the negative lead of the battery has a very clean connection to earth.
Mine didn't so the current went down the small earth wire in the main loom and melted it.
--- End quote ---
Ouch! ok I'll be getting the dremel wire brush attachments out then.
hairygit:
Can't see any reason why it won't work electrically. As has already been mentioned, make sure the earth lead is clean both ends and where it attaches to the frame/engine. Best to use the kickstarter with the plugs out until you are sure oil is reaching the rockers/ valves, the oil light may extinguish a fair while before it reaches the cam area, safer to kick it rather than hit the battery too hard to begin with.
Sent from my X6pro using Tapatalk
eight0:
Got the carbs apart. 3 of the float pins came out ok.. one is stuck in there. Rather than break the post I've seen on another thread that a decent automatic centre punch can work so i've ordered one.
Another issue is one of the needle jet (main jet)? housings has badly deteriorated, looks like I might need to find another carb.
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Stuck pin
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Corroded
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