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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 5 Days Ago
73HEAD 73HEAD is offline
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Default too much oil in primary

hi people, i think i might have a serious problem?? i filled up the primary the other day and somehow, ( i dont know why) but i filled the primary to the brim. idiot!!! The bike started idled for a short time and conked out i noticed oil coming out of the clutch adjustment port. SHIT!! Ilet it be and drained the oil to where it should be. left the fluid level allen key out and left it for a few days.
now when i try to start it there is an almighty clang type noise coming from the primary as i hit the start button. so i have left it and will get to it over the next few weeks. any idea what sort of damage i may have done. thanks.. the bike is a late 73 xlh.
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Did you drain, then refill with proper amount?
Do not know about ironheads, but EVO is 28 ounces.
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remove the oil level screw "somewhere around the left footpeg mount" block the bike up level, when it stops draining you have the correct amount in there, 73 has the bypass valve so you use the same oil in primary as engine, this bypass valve will allow excess oil to flow between primary and crankcase, if you put that much oil in there you should pull the timing plug and spark plugs and crank it over till it quits barfing oil out the timing plug hole.
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had one brought to me that the guy said was siezed up, musta had 5 qts of oil in the primary, drained it to fill level screw, removed timing plug, oil came pouring out, engine was hydro locked, cranked engine till it quit coming out and it was happy again.
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Compensator loose?
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hey randy, yes i pulled oil level plug a few days ago and let it find its way out. the clutch would probably be gummed up now so im going to pull the primary off soon. but what concerns me is the horrible noise it makes when hitting the start button. its sort of like a clunk bang thud all at once as though something inside has come off or brokenits back at the right level now but the noise frightens me. so i suppose i should have a good look inside the primary before i do anything?. thanks for getting back to me
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yes sportsterdoc. ironheads i am learning as i go along. i have a parts manual and a service manual from the factory. i dont know why i filled it up so much. i reall dont. thanks for getting back to me
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ill pull the primary off soon and have a squizz. i intended to anyway soon. would something like the compensator just come loose? ill have a good look. do i need to worry that oil might have gotten in to places that it shouldnt have? thank mate
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if the crankcase is hydro locked it'll make some serious banging noises and probably won't turn over.
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whats a hydro lock? how do i fix it if thats the problem?
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