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New (to me!) '77 CB400F - US model
mattsz:
I guess I need to brush up on the firing order and workings of this engine. Is there a crank position where all the valves are closed? I'd like to leave the engine in that condition, if possible, when I put it to bed for the winter...
hairygit:
Short answer, no! The only way to get all valves closed is lift the rocker cover, but probably not a good idea.
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taysidedragon:
--- Quote from: hairygit on October 27, 2018, 07:20:11 PM ---Short answer, no! The only way to get all valves closed is lift the rocker cover, but probably not a good idea.
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--- End quote ---
Or slacken off all the tappets so they are not pushing down on the valves.
Have to do that before taking off the cam cover anyway. 🔧👍
ted_paper:
Hi,
I have Kevin's phenolic brake piston fitted for the last seven years and have had no problems with sticking or anything else.
mattsz:
I had a few minutes to kill this morning...
Battery: I topped up the cells with distilled water, then left it overnight on my 0.75 amp tender; it reached about 6V (it's not meant to charge a dead battery anyway). Over the next couple of days, I managed to get it charged to about 13V using a bigger car charger (set on 2A) followed by a topping up with the 0.75A tender. But when I reconnected it and turned the key, I got nothing. I connected a volt meter, with the key off it read about 10V, but as soon as I turned the key, volts dropped literally to zero, so I'd say the battery is shot.
I removed the plugs - last run two years ago:
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The oil on the dipstick looks very clean and clear. The kick start lever easily turned the engine over, by hand. I added a teaspoon or so of oil to each cylinder, turned the engine over by hand a few times, then I figured I'd try to check the oil pressure by spinning the engine. I hooked up a spare battery pack... remember three years ago the PO said the starter didn't work when it was wet? Well, it's not wet now, but it still doesn't work. The start relay buzzes loudly, though, so I'm thinking that should be a simple fix. The starter button feels kind of sticky anyway, so I'm just as happy not to try to use it and have it stick on with the starter turning. No big surprises or concerns there.
I kicked the engine over manually, still without the plugs in, key on and powered up - after about 20 kicks, the oil pressure light went out, and stayed out for about 20 seconds. After it came back on, one or two more kicks turned it off again for a few seconds. 10 or so kicks turns the light off for about 20 seconds. Does this seem like a reasonable non-running oil pressure test?
When I change the oil again before storage, is it enough to try to circulate it manually, or should I see about bypassing the starter relay to properly crank the engine?
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