What did you do to your Yamaha today?

went to town yesterday, drove around, stopped at a friends house, headed out of town, and noticed my foot was getting really wet.

turns out one of my fuel lines cracked and broke.....

so i limped it back to my friends house, and got the hose replaced!

you're not a real biker, if you haven't fixed your bike on the side of the rode! hah.

 

I rode the 900 over to the FedEx Terminal area in Billerica and used their spacious loop around the Truck Terminal as a track for doing a series of Plug Chops.

I'd make a few loops and then gun-it good on the long straightaway and kill it.
Coast to a stop and pull those Plugs and get a good read on them for Tweaking the Pilot Miixture Screws on those Big Mikuni's.

After four or five loops around the place, this afternoon, I have all four Pilot Mixtures set ... EVENLY ... But, I don't have the Optimum setting for Air~Fuel dialed-in yet.

Looks like I have to add a bit of Richness, across the board, before I have the four holes all at a Mix that is going to get the Throttle Response to not hesitate getting cranked open from closed and coasting.

I'm close ... very close! Within the width of a Nickel or a Dime I'd say.
All I need is that little bit of extra Mixture that we need for sustaining Ignition coming off-idle. Coming off closed-throttle.

I'll get it!
So long as it doesn't rain tomorrow!

 

i t-boned a car at.. idk 30? 40?

photos later

 

Shit!

 

Yesterday:
New stator coil and oil/filter change.

 

Cleaned 3 of 4 carbs, need to order new float bowl gaskets (should have known better). Replaced shaft seals as well. Replaced factory fuse holders with new weather resistant ATO fuse box from this guy.

Tonight, finish remaining carb, wrap intake holders with an inner tube to augment the liquid e-tape, order new carb to airbox rubbers, and start in on the electrical connections. I'm getting there.

 

nothing today. but last night i broke a set of bar end mirrors i was trying to install. that kinda sucked.

 

Started experimenting with polishing the aluminum last night. Now I just need to get around to replacing that fuse box and putting in an inline FF.

 

Tuesday My front fairing broke off while driving home from work....

Luckely I could reach a save place for stopping on time...

Wednesday I tore the headlight out of the fairing and yesterday I puted on the bike again...

Now i have a XJ750 Naked Seca....

 

Dropped her off at the shop. : (

 

Got the carbs for my X pretty much reassembled; just gotta stick the remaining two starter plungers back in, and double-check the float heights. Then maybe next week I can see about cranking the thing over and see if she'll fire.

 

I just dished out my front seat about an inch to nothing so that it slopes back instead of forward. May have taken a little bit too much toward the back, if you do this be careful. Restapled cover with 1/4" arrow T50, found out how much my stapler sucked. Las night took off rear wheel, taking to garage today to get my new tire put on. I have a brake caliper rebuild kit on the way, along with new front brake lever. Seems that someone dropped the bike before me and liked the lever turning straight down.

 

Used the 650 to test some parts from the 750 and discovered a few things. The poor 650's electrical system has been modified quite a bit. Things have been rearranged all over the place.

For example, it is my understanding that the relay up front SHOULD be the starter circuit cut-out (e.g. in gear with clutch out, black), the one by the self-cancelling unit (blue mark) should be the headlight relay, and the one by the TCI (yellow mark) should be the side stand relay. Right?

Well, I have the headlight relay below the TCI (blue mark), the side stand realy up front (yellow mark) and the starter circuit cut-out (black) by the self-cancelling unit.

The bike runs just fine (though needs a few fresh tanks of gas and some Sea Foam run through it), but this kind of thing tells me that I'm going to have to dig deeper into this bike's wiring than I thought at first.

Oh, and discovered that the leads from the side stand switch have been cut, very close to the switch itself. Side stand switch works (I get about 10 Ohms when it's up, discontinuity when it's down), though I wonder if there's a connector anywhere to use!

Oh, well. One more thing for the To Do pile.

 

Colortuned the 900. Came-out great!
I can't believe that it took 25 years to come-up with the Colortune Plug!

The 900 is Blue on all four!
Nice Blue.
Frank Sinatra's eye's; Blue!

She's idling like a Chronograph Ticking-time!
Throttle Response is immediate ... and, that's what I was going for!

Those four big Mikuni's are Race Prepped and ready for some Street Fighting.
Would somebody get me the email address of the guy who invented Colortune and let me send him a note of thanks.

I like it when the Engine is right on the Edge of Fine-Tuning.
Hooked-up the Carb Sticks to check the Sync ... didn't have to Tweak it one little bit ... still dead-on from last year!

 

Dismantled the rear wheel rear brakes frozen, rusty and dirty . cleaned and lubed. and adjusted. , I HAVE BRAKES.

took the bike on its maiden voyage for testing (10 miles) she ran great and smooth now for the front brakes

man it sure does rev high in 5th gear wow lots of noise from the exhaust.

any suggestions for quieter pipes, like manufacturers stores ?????

1982 xs400j with 2 into 2. I was thinking longer pipes as the current end just before the center of the rear wheel. maybe take it to the back edge of the tire? i have no idea of the specs on the pipe, size and all, if anyone knows i would appreaciate it greatly.

 

Put new saddle bags on and rode. Fixing to redo my seat. Its to bulky right now.

 

Used the 650 as a tester for the 750's coils (see Resurrecting the 750). Worked pretty well. Took the 650 to get gas and revved it up high to make sure those coils are *good* and not just good at idle.

On the way to get gas, I see two people with helmets walking the other way. I stopped. It was my neighbor and his girlfriend. Apparently, his CBR 600 F4i quit on him. "I think the battery is dead."

I'm going to keep an eye out for a cheap F4i for sale soon.

Also found out some things about the 650's relays (and the 750's relays).

First of all, you can't trust the diagrams that show what's mounted where. They conflict with each other and are confusing. Sometimes they even show you things that don't exist! However, you CAN trust the WIRING diagrams. Based on the wire colors and some empirical testing, I have things mostly figured out.

I think the relays on the 650 are all in the right places, but the headlight and side stand relay *plugs* have been swapped. E.g. the wiring harness has been redone in some way such that the connector for the headlight relay (confirmed by wire colors and by "no headlight when plug is pulled") goes to the blue-marked relay mounted below the TCI. A quick comparison with the 750 suggests that this is the side stand relay (the 750 has no headlight relay, but DOES have a blue-marked side stand relay mounted below its TCI).

According to the wiring diagram, the headlight and side stand relays are *similar*, but not exactly the same. Some more investigation is in order here.

Also, it's useful to note that the wiring diagram shows that the relay mounted by the self-cancelling unit under the tank is the starter circuit cut-off relay. The "component location" diagram shows that the headlight relay is mounted there. The wiring diagram is the one that is correct, for both the 650 and the 750. *sigh*

More tomorrow, I hope.

 

Took the carbs off and tweeked them a bit and put them back on and took it for a short spin. (don't want to go to far no license,plates ,insurance or title for that matter . nice thing about a small town! Got a little worried first time out the clutch slipped a little when I got on it in 3rd & 4th gear and it idled fast after it warmed up. Messed with the clutch lever adjustment and idle screw and WHOA did that mf take of after that! Thing ran great! Now just got to finish working on the small things. lol

 

My clutch's friction point is near the end of the lever travel, so I wanted to screw in the adjuster at the clutch. The Haynes mentions a cover with two screws, well, I don't have that so I removed the footpeg and shifter in preparation for removing the side cover. Unfortunately for me, one of the 5mm allen bolts is frozen and of course it stripped. Cut a slot with a Dremel for a big screwdriver, still no luck. Then I notice this little rubber plug.... hmmmm.... no! They didn't! They did! Those thoughtful Yamaha engineers put a rubber plug over the clutch adjuster so you don't have to remove the side cover. The Haynes was simply wrong. :evil:

Unfortunately, after lubing the cable and adjusting the clutch, I'm still almost out of travel so it's time for new friction disks.

The good news is, I finally bent the shifter back where it belongs while it was off the bike. It's been hitting the alternator case ever since the bike was dropped a few years ago.

Shouldn't an XS400 have 6 gears? Mine does...

Yeah, the stock pipes are a bit loud for me too. I'm reluctant to mess with them, though, because it would probably require rejetting and I have enough problems with the stock carbs!

 

Today I found out that my 5kR idle was due to the throttle return hitting the boot clamp preventing full close! I also painted the battery covers and rear fender flat black. Installed new black handlebar-end mirrors and planned out where to cut the exhaust in order to install my new mufflers. Pics coming soon!