First off, allow me to introduce myself. I am, beyond doubt,
the 'newest' of the 'newbies' to ever hit this site. No strong
bike background, with *NO* Norton background. Simply fell in
love with this 1973 850 Commando and don't know Jack about it.
Having just bought it, want to change the oil. Trying to
learn, though, and I've glad to be reading. Going over the
English manual reminds me of the old saying about England and
the USA being "Two countries divided by a single
language!" Seems cumbersome to find stuff out, little
bits of info covering the oil ciculation scattered throughout
the entire damned manual. Here goes, and again, sorry for the
CHANGING THE OIL: (one combined question?)
1.) I see the drain plug in the oil tank.
2.) the large bolt head attached to the rear of said tank
supposedly has a filter within?
3.) there's a quick closing valve added to the oil feed line
as it heads to the crankcase on the right hand side (obviously
should be openned to allow drainage)
4.) is there ANOTHER filter where the oil feed line is bolted
to the crankcase?
5.) how do I drain oil from that right case?
6.) I see what appears to be a drain plug on the lower LEFT
presumably, that is ALL I need focus on when I change the oil?
And I really want to change it so I can ride a bit before the
snow flies, so greatly appreciate your responces).
Now... I keep reading about the more 'normal' screw on oil
filters of the 850cc... but I do not have that on my bike!
What's up with that? Anyway, can I ADD ON a base plate (forget
the name) that accepts oil feed INTO and also OUT of, which a
spin on oil filter can THEN BE ATTACHED (I saw one on ebay a
while ago)?? And, if this is so (I hope it is), would anyone
have a digital PICTURE of their's so that I can view/copy?
I've seen Norton Commando's that had an OIL COOLER added
(mounted on the frame just aft of the front wheel, where
modern water coolers sit). Where would I get one, and where's
the best place to buy one?
Anyway... I know it sounds rediculous to be so new I'm asking
about how to change the friggin oil without making a mistake!
It's just all new to me. I've wrenched (a lot!) on old English
CARS before, just never a Norton. Truly don't want to screw
Oh, yes: I mentioned that there's a quick close valve added
into the main oil feed line from the tank to the 'case, right?
Then why doesn't that STOP the slowest of oil leaks? What IS
the best valve to use... or should I just tear out the pump
(eventually) and do my best to eliminate end play as the
manual suggests (although seems like that would have been done
many times already through these last decades...)
Come on, guys! I don't want to attend this question tomorrow,
only to see 8 people read the post, but not a single one of
you willing to TRY to help the newest (greenest!) guy out.