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Old 08-27-2011, 09:46 PM   #2536
NordieBoy
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Joined: Dec 2006
Location: Kiwiland
Oddometer: 7,111
Quote:
Originally Posted by Anklyne View Post
I have a '91 TT250, same as the TT350 except for displacement, 6v electricals, street legal from the factory.
I'm wondering if anyone can shed some light on what exactly this little black box is. It's located behind the headlight, underneath the speedometer.



My best guess is that it's just a relay or something related to the kill switch and killing the engine. Anyone know for sure what it is?
Right.
The bike works fine without it.
Except the ignition key is no longer needed
The kill switch still works fine.

I think I'll put mine back on.

I like going down steep stuff in gear with the ignition off and using the front brake, both feet and the clutch for the rear brake.
I do not want it crash starting when I'm doing this...
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Old 08-27-2011, 10:07 PM   #2537
Zecatfish
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Location: Arkansas USA
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Those with questionable old timing chain tensioners....

I was looking at my old one last night, you know it would be easy to re-use it.
Just get a longer screw that will screw in and add a locking nut.
Adjust the old tensioner till its snug, then screw in the bolt till it bottoms out, and adjust the locking nut down to make sure it doesn't move.

This will lock the slotted adjuster screw so it can't move and in effect becomes a manual adjuster.
this won't make the stem any longer to help with stretched chains though.
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Old 08-28-2011, 02:20 PM   #2538
Flirtin w/Disaster
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Is it possible to add electric start to 94 XT 350

Although its easy to crank when cold it can be a bear when the engine is warm. Not to mention its 100 degrees out. Quick trip to lunch can become a freaking workout if it decides to be a bitch to crank. Possible to add the e-start or not?
Thanks, F w/D
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Old 08-28-2011, 04:01 PM   #2539
Zecatfish
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Joined: Dec 2006
Location: Arkansas USA
Oddometer: 7,922
Quote:
Originally Posted by Flirtin w/Disaster View Post
Although its easy to crank when cold it can be a bear when the engine is warm. Not to mention its 100 degrees out. Quick trip to lunch can become a freaking workout if it decides to be a bitch to crank. Possible to add the e-start or not?
Thanks, F w/D
This engine never had an option for electric start.
There is no place to even consider mounting a starter on it. You'll just have to find another bike if thats what you really want.
Mine starts 1 kick everytime once warm so they are not all hard to start warm.
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Old 08-28-2011, 05:23 PM   #2540
Flirtin w/Disaster
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10-4. I like it too much to upgrade now but maybe oneday. Cooler temps should take the worst out of it. Longer riding times will be nice also.
Thanks, F w/D
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Old 08-28-2011, 05:28 PM   #2541
Flirtin w/Disaster
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Another Electric start question

If the "kicker" was removed from the starting shaft, could a portable hand drill with correct fitting be used to spin the starter shaft thus cranking?
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Old 08-28-2011, 05:46 PM   #2542
EagleTalons
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Hand drill would never have enough torque to rotate the shaft.
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Old 08-28-2011, 06:54 PM   #2543
Zecatfish
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Location: Arkansas USA
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Quote:
Originally Posted by Flirtin w/Disaster View Post
If the "kicker" was removed from the starting shaft, could a portable hand drill with correct fitting be used to spin the starter shaft thus cranking?

Is your auto-decompress working?
When you move the kickstarter does lever just in front of it pull the cable?
If so is that cable attached to the lever on the head still?
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Old 08-29-2011, 01:49 AM   #2544
NordieBoy
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Quote:
Originally Posted by NordieBoy View Post
Right.
The bike works fine without it.
Except the ignition key is no longer needed
The kill switch still works fine.
If however you feel like going for a ride without your key, just because you can...

Your blinkers won't work
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Old 08-29-2011, 02:37 AM   #2545
Brypoint
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Quote:
Originally Posted by Flirtin w/Disaster View Post
Although its easy to crank when cold it can be a bear when the engine is warm. Not to mention its 100 degrees out. Quick trip to lunch can become a freaking workout if it decides to be a bitch to crank. Possible to add the e-start or not?
Thanks, F w/D

I would also look at the decomp cable, my bike kicks almost too easy with the decomp engaged (i can literaly do it by hand). So if your feeling any resistance at all check the decomp cable.
On hot restarts if she wont fire first or second kick try holding throttle wide open, works good if mine is feeling finicky. I usually get it on first or second though.
Speed of kick is also a factor because the rotor needs to be a certain rpm before it will have enough power to send to spark.
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Old 08-29-2011, 11:42 AM   #2546
Flirtin w/Disaster
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Thanks for the replies. I think decomp needs adjusting. I'll keep on kicking. F w/D
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Old 08-29-2011, 04:03 PM   #2547
FlatlanderInVT
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Quote:
Originally Posted by Brypoint View Post
On hot restarts if she wont fire first or second kick try holding throttle wide open, works good if mine is feeling finicky.
One of the previous owners of my current XT talked about how finicky it was to start while warm, and I quickly discovered this trick. Kick it 2 or 3 times, if nothing is happening then hold it open and it will usually start first or second kick at that point.
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Old 08-29-2011, 07:17 PM   #2548
Anklyne
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Location: Perth, Western Australia
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Quote:
Originally Posted by NordieBoy View Post
If however you feel like going for a ride without your key, just because you can...

Your blinkers won't work
How peculiar. I never did get around to emailing Yamaha about that little box.
I have found (and did suspect prior) that if you change out the DC rectifier for a bridge rectifier, you'll need to convert the headlight and taillight over to DC as well.

I'm back to messing with the engine now though because I took her out to a mates farm for the weekend and have an oil leak from either the chain tensioner or base gasket that only occurs after revving high (replaced both the gaskets, maybe bolts aren't tight enough?) and she's a bit smoky, particularly when the engine is quite hot (lots of smoke after putting around at low speed for a while, stopped and let it cool down, then after starting again there was none). Valve seals?
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Old 08-29-2011, 11:19 PM   #2549
NordieBoy
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Joined: Dec 2006
Location: Kiwiland
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Quote:
Originally Posted by Anklyne View Post
How peculiar. I never did get around to emailing Yamaha about that little box.
The key isn't needed because the red wire broke...

Nothing to do with the relay...

Oops...
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Old 08-31-2011, 06:13 AM   #2550
mharizanov
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I find my bike easiest to start if I

Cold start:
1) Choke all way out
2) Make sure emergency key is not in off position
3) With ignition off, make 2-3 kicks so that some fuel moves in the carb
4) Shift to first or second gear
5) Push back the bike until the tire refuses to move, this brings the piston in Top Dead Center
6) A powerful kick now should get you running. Depending on your carb setup you may need to add some throttle or not; my bike requires 1/4 throttle on cold start, but once hot doesn't start if I touch the throttle while kicking. Experiment and learn how yours behaves.

If the bike is warm I do 4-6 only
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