Real noob question: Name that part

Real Noob here,

Looking for some help. I'm brand spanking new to bikes and small engines as a whole. So I'm looking for some help figuring out the parts of my bike.

I have a numbered picture of the engine area of my bike, and if anyone can list the parts for me, that would be great.

I'm old enough that I'm not ashamed to broadcast my complete ignorance. So maybe there are other noobs out there with the same questions but afraid to look stupid.

81 650 MAXIM

Eman the noob

 

I'm no bike expert myself but I'm pretty sure I got these answers. Someone will correct me if not.

1. Clutch cover
2. oil fill
3. Right side engine cover
4. Engine. Cylinder head to be more specific.
5. Carb (1 of 4)
6. valve cover
7. air box to carb boot (1 of 4)
8. Carb to intake boot (1 of 4)
9. Clutch cable attachment
10. Choke linkage
11. foot peg and bracket

Do you have a manual yet? Get one. Best $20 ever.

 

me too
1 clutch cover
2 oil fill screw/plug
3 small cover right side with nothing under it / ?
4 cylinders / jugs
5 carbs
6 valve cover
7 air box boot / carb boot air box side
8 intake manifold
9 clutch throw out shaft / arm
10 enrichment cable bracket (closest) throttle cable bracket ( next one back)
11 aluminum thing down by the right peg that the brake shaft goes through
i might not pass all the tests but i get my homework in on time

 

Part 5 is 4 of 4 (saying 1 of 4 could be confusing?)
Most problems occur with the part that connects the handlebars to the seat.

 

Sorry. Engineering side of me snuck out again. You can only see 1 you only label 1 but state how many are needed/used.

 

cylinders and associated parts are numbered 1 thru 4, while sitting on the bike 1 is on the left 4 on the right
can i get 1/2 credit for #11 ?

 

no yics in 81?

 

Not on mine.

 

YICs is for early-to-mid 82 onward from what I've read.

 

Except for the XJ750RH ('81 Seca 750) which are /were YICS


iwingameover,
Polock is right, #4 is actually the Jug assy. The cylinder head is not numbered but would be just slightly north of #4.

 

YICS was first introduced for the 1981 model year on the Seca 550 and Seca 750; then "trickled" into the rest of the lineup by '83. The 650s were the last to get it.

 

The part between #4 (cylinders, jugs) and #6 (cam cover) that you do not have labeled is the cylinder head. The spark plug screws into the cylinder head.

 

Another parts question.

I'm in the process of polishing the aluminum. I removed the cover that is on the opposite side of the engine as #3 above.

1. What is this part under the cover?
2. There is a thin piece of metal/rubber that is around the edge of the cover. It only goes half way around. Is this a seal - i.e should it only go half way around?

 

That is the ignition cover, and is supposed to have a gasket to keep water out, even though the ignition is solid state and would probably work wet.

 

Play around HERE for a while, you will soon have a handle on things.

 

Thanks Wizard, I have been using that catalogue when possible. But its hard when I don't know the name of the larger part to get started drilling down.

That being said, I have another part that I need the name of so I can replace it. It was damaged and a PO had it welded. There is a small hole there, so I 'd like to replace the piece. It's the middle section (see attached picture).

 

Circled you have part of the exhaust collector, the left foot peg, but I think you mean the gear shift.

 

I think he's referring to the exhaust collector, based on the name of the pic.

The exhaust collector (a two-piece "manifold" on your bike, attached to the mufflers) is rather ugly, so Yamaha added cosmetic "heat shields" onto the outsides; suspect that's what you're referring to. The bad news is they don't separate from the collector/muffler (not supposed to anyway) the good news is they're just cosmetic.
More bad news: a new exhaust collector half/muffler assembly would cost a fortune if Yamaha still offered them, which they don't.
Good news is that kind of stuff pops up on eBay all the time, just gotta watch for it.
In the meantime, get us a close up to confirm; but if it's not leaking exhaust there then it's what I said.

 

Like I said, that kind of stuff pops up on eBay all the time: http://cgi.ebay.com/ebaymotors/YAMAHA-X ... ccessories
JUST LISTED, not an auction, a "buy now."

Another one: http://cgi.ebay.com/ebaymotors/1980-YAM ... ccessories

 

sorry, I was a little vague about the part I was referring to. Yes, I meant the middle section of the exhaust pipe - by the left foot peg. So there is no way to buy a collector, without buying the entire exhaust (which I was thinking about anyhow)?

 

On your bike, the collector halves are part of the mufflers; they separate in the middle and the headpipes clamp into them; so the whole thing isn't one unit.

You would have to replace the muffler/"collector half" assembly on that side.

This might help:

 

Ignorance can be fixed.

You can't fix stupid!

And BTW the ignition works fine wet.
Been there done that.

Welcome to the site.