cold not running

[vandy]

My bike has a condition that im not sure if its is built into the bike but i think not.. When it is cool outside the bike will not allow me to put it in gear..If i put the bike in gear it is like i shut off the spark.. cold idle is 1500 to 2000... but i can rev it up to 4 or 5 k and stick it in gear and it still stalls like if i had shut something off.. To me this does not sound like a built in condition. If i wait till the rpm comes down to 1k it will let me put it in gear and drive away.

PS When i bought this bike used i didnt receive a owners manual or tool kit so i will be trying to source one out somewhere.

 

[wfooshee]

The first thing to look at if it dies when put into gear is the sidestand switch, which is designed to do exactly that: disallow engine running with the sidestand down and tranny in gear. Why it would be affected by cold vs warm is weird, though. I wonder if the switch is sticking, thinks the stand is still down for a while.

Does the engine kill when warm if you put the sidestand down while in gear? And is there then a delay before it will run again after the stand comes up? Stuck switch for sure, then.

Even without a delay, if the switch is gummed up, the gumminess may be looser with some temperature.

So clean up that switch and see what happens.

 

[madmike2]

PS When i bought this bike used i didnt receive a owners manual or tool kit so i will be trying to source one out somewhere.

University Motors? Info in the "Bin-O'-Facts".

+1 on wfooshee's advice. It sounds more like a bad sensor or micro-switch. The "RPM thing" is perplexing.

 

[Fred W]

It's because it's too yellow.

No actually, check the safety relay circuit for the sidestand switch.

PS - I like yellow.

 

[vandy]

i think you may have hit the nail on the head.. i never even thought of that i will check that next time i try to start it when its cold

 

[Jon T]

to address your other problem. You can download an owners manual on the Yamaha website. I bought my bike used, and it's nice to have a copy. haven't printed it out to carry, but one advantage of having an electronic copy is you can search for words in the PDF version. I don't have the URL handy, but it's on the official Yamaha website.

I recall a section that details a fairly long series of steps to verify the side stand switch is functioning properly.

 

[wfooshee]

to address your other problem. You can download an owners manual on the Yamaha website. I bought my bike used, and it's nice to have a copy. haven't printed it out to carry, but one advantage of having an electronic copy is you can search for words in the PDF version. I don't have the URL handy, but it's on the official Yamaha website.
I recall a section that details a fairly long series of steps to verify the side stand switch is functioning properly.

That's actually what I did, also got the bike without an owner's manual. It's about an 8-meg PDF. Go here, and you can use the pull-downs to pick your bike year and model.

The pdf has a print-inhibit, but it's downloadable, viewable, and searchable.

[SIZE=8pt]And if you have screen-capture skillz and a lot of patience, maybe a layout program . . . . . [/SIZE]

 

[stellarsteve]

I had the same problem with my Concours. The sidestand switch works the same as on the FJR. When the sidestand is down, there is a cam that positively pushes the switch plunger in and opens the contact. When the sidestand is in the up position the switch plunger is pushed out via a spring, thus closing the contact. If the plunger is corroded or dirty it will stick where the spring doesn't have enough umph to push it out.

Just like wfooshee said, lube it up and it should work.

 

[vandy]

there was a mud dobber that tried to build a little home on the switch.. it works fine now thanks for your help

 

[wfooshee]

there was a mud dobber that tried to build a little home on the switch.. it works fine now thanks for your help

Yet another reason not to ride in shorts!