can be severa different things contributing to your hard starting problems...since its an 04 have you ever had your valves adjusted?? valves being out of spec can play havoc on start-ups...

next the aftermarket CDI that you are using is most likely a BRP or Dynatek or possibly a procomm box...these 3 brnads require a higher output voltage from the battery to start...whereas a hunterworks tri-fire and stock oem cdi box can start on as little as 6 volts..maybe putting a trickle charger on your battery while its sits up could make the difference your looking for..Finally your choke cable could be sticking not allowing enough fuel into the carb...a larger pilot jet like a 47.5 or a 50 mikuni would help you out also..

 

That is why i am glad yamaha came out with the 700FI

 

Yeah but when you have problems with your FI you won't have a clue where to start looking :dunno: when it don't start. Carb engines are so much simpler ....gas and spark and away you go. It just a mtter of time and some FI guys will also have problems.

 

Yeah i am sure there might be a few problems but at least with FI dont have to worrie about choking it cause its automatic

 

The valves havent ever been adj. what does it take to do them? And would it be worth buying a new cdi. Is there any thing better with the new ones or just lower starting voltage?

 

Get the valves adjusted!

With mine, I need to turn the key to the on position and wait until the digital dash lights up, then start it. It just starts better if I wait the few seconds on a cold startup.

 

the valves are tricky and you have to have a special feeler guage to adjsut them. also getting the timing spot on is tricky..just take it in to a reputable dealer and have them do the job for you. Should be no more than 125$..

as far as the CDI is concerned you are good with the one you have as long as your battery is good and strong..but hunterworks has the tri-fire easy starting CDI boxes on sale for about 150$

 

May want to check to see if the wires are on your heating element on the bottom of the Carb.

 

Inline block heater. No more than $30 at any automotive or atv store. Just cut a rad hose, stick it inline in your rad hose, and refill radiator. now all you have to do is plug it in when its cold just like your car. It was -31 up here Sunday and started first turn after plugging it in for 1 hour.

 

Start simple....

Do you have the stock CDI? If not borrow one from a friend. Install the stock CDI and see if the problem is fixed. If it fixes the problem (and my guess is that it will) than you know it is the CDI.

The earlier Pro Comm CDI's had a few issues. Some of them needed 5 seconds to power up before you could start the Rhino. Turn they key on, wait 5 seconds and then start it.

Some of them are very touchey when it comes to battery power. As you know when it is cold outside you have less cranking amps. You may need a new battery. If you have the orginal battery in your Rhino then I would get a new one right away. If not did you replace it with a stock battery? Stock batteries are usually good for about 2 years.

BRP is offering an upgrade special. If you want to upgrade your CDI they will give you a $ 50.00 credit on your old CDI. Even if it was not bought from them. It doenst have to work either. The new Stage 2 CDI is a good CDI.

But before spending the money on a new CDI ..... do the above steps and make sure it is a CDI issue. MY bet is that it is.....

 

Put a new spark plug in tonight and it started right up. Went out a couple hours later and it started up again. Hope this was it. I still may look into a new cdi. Not sure on the valves, had both of my hondas done like they said i should do after the break in period. They didnt have to change either of them. I think i will look into installing a second batt. With plowing and useing the wench for the blade not sure if the charger can keep up. The guy i bought it from put a lawn and garden batt in not sure if that is good or bad. What would be the best for the money to put in the factory spot? I seen a heavy duty L and G with 300 CCA:dunno:. Thanks

 

I think the best stock repalcement battery is the Odyssey PC925. It will fit right into the stock location. Click on the below link.... UTV Powersports has great custoemr service.

http://www.utvpowersports.com/inc/sdetail/812

 

mikef ya already know what I'm gonna say.. Hunterworks Tri-Fire CDI. $154 shipped to your door. Cold starts no prob, eliminates probems due to low voltage from your plow use. A stock CDI does work fine. I won't tell anyone to buy an aftermarket CDI w/o checking into knowing exactly what they are installing.

Sometimes I just don't think members look at where a guy is posting from. ahart98745 isn't from AZ. When I say "when it's cold" it means 10F or lower here in Minnesota.

Just the same, plugs replaced great idea, new battery (keep your outside temperature in mind,CA sun great but what about ten below) Something is wrong if your draining one battery, until you fix your probem the system WILL only drain both. Not really sure if stock sysyem even puts out enough amps to charge two batteries.Anyones thoughts on secound battery?

nonner two thumbs up!! "Inline block heater" So obvious and cheep. Yet I keep stumble'n over an extention cord that plugs into my truck to make sure it starts.

Make sure your choke is pulled all the way out when starting. Yamaha has such a poor cable design that when its's cold I think I'm gona pull the dash out.

 

Who has the BRP with the $50 bucks back. And what is the best CDI to go with? As far as the block heater is a good idea but up hunting or ice fishing i dont have power. Need good cold starts at LOW LOW temps.

 

Black Rhino Performance is offering the $ 50.00 CDI exchange.

 

Hi this might help it did on my and it's cold here this time of year anyway yamaha has a additive for fuel it's a drying agent just put in gas helps the gas from freezing in the lines and bowl works good I also put a battery tender so it's charged all the time still have to warm it up but starts on a dime.

 

I recommend the Hunterworks Tri-Fire CDI. Also, you may want to try warming up rhe battery before cranking. To do that, turn on the key, turn on the headlights, let the headlights burn for about 30 seconds, then turn off the headlights and crank the engine. I have read that that helps cold temp cranking. As far as the battery tender, you may want to try one of the solar panel tenders (about $25). We put them on our trap machines to keep the batteries topped off between Sporting Clay tournaments.

-Bear

 

My 04 660 starts very hard in the cold and some times not at all. It does have an aftermarket CDI not sure what kind it is was in there when i bought it.

Mine does the same thing. It too has an aftermarket CDI. I found that it starts a little easier if you reduce the spark gap. It's not the valves. I checked mine at 40 hours and it was fine.
The manual gives directions on how to use the choke. I read through it and it seemed to help.

Becareful, I was cranking on mine with the choke on and it wouldn't start. I turned the key off then back on and "KABOOM" One hell of a back fire. Apparently, each time you turn the key switch from off to on, it causes a spark. It is repeatable. Pull the plug and turn the key off and on. You should see it spark each time.

I'm told that the stock one works fine. However, I've seen my brothers do the same thing. Though not nearly as often as mine. His is the stock cdi.

 

Tri-Fire CDI by Hunterworks, and while your there, pick up the cold start spark plug wire.

 

Try some starting fluid.




My '05 660 sits for a week in the cold and it will not start. All that is needed is a shot of ether in the intake, pull the choke out and turn the key and away she goes.

 

Won't start in cold temps.

I was down near Ocotillo Wells last weekend. I tried to start the Rhino and ended up killing the battery and a partially charged jump start battery.
The damn thing will not start when it's cold. I tried everything, choking, ether and nothing would work.
I then connected it to my truck via jumper cables and not even a full turn of the starter and the engine fired right off.
It certainly appears to be a low voltage issue.