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CB750 Barn find project - First Timer
K2-K6:
Something odd about that kickstart, I'd be surprised if oil will make that return correctly. Looks like you'll have to get in there to see what's happened.
For oil pressure, pull the oil filter off to see if it's present there, it goes from the pump straight to filter first and comes out of the hole in the crankcase (not the filter bolt as that's the exit route to rest of oil system) if you put a bowl under it the oil should appear there first and you can put the filter on to continue.
Agree with Rob62, you need to be careful how much you turn it over with no oil supply. Youucant do much about the main bearings but you can supply the cam with some oil manually via the tappet covers.
K2-K6:
I crossed over your posting there.
With the Vaseline, it'll only cause a vacuum and not go through the pump generally. You need to make sure the oil is getting from tank via oil line to pump entrance, if so then the Vaseline will pull the oil through with the vac it causes but if you spin the pump first before oil is available then it may not work.
Underdog1:
--- Quote from: K2-K6 on August 07, 2018, 10:17:08 PM ---I crossed over your posting there.
With the Vaseline, it'll only cause a vacuum and not go through the pump generally. You need to make sure the oil is getting from tank via oil line to pump entrance, if so then the Vaseline will pull the oil through with the vac it causes but if you spin the pump first before oil is available then it may not work.
--- End quote ---
When I removed the pump just now oil poured out of the inlet oil way from the tank so it’s definitely got a supply that side. I’ll have a look if the oil filter is wet tomorrow.
Really don’t want to remove the engine again right now, to the point where I’d rather run it without a kickstart for a while before addressing it!
Trigger:
I would not try running it until you have addressed the kick start problem, the cog wheel on the kick start can lock and then lock the engine via the clutch.
Underdog1:
--- Quote from: Trigger on August 07, 2018, 10:49:02 PM ---I would not try running it until you have addressed the kick start problem, the cog wheel on the kick start can lock and then lock the engine via the clutch.
--- End quote ---
Drat. I’ll Remove the clutch cover bits in case that’s causing something to bind tomorrow, if I have no luck.. well I guess I better gear up to get the lump out agin :(
Last time I stripped it down to the frame and later it on its side. Are there any methods to remove the engine from a complete bike?
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