Stalling (carb)issues with a 2008 Rhino 450 - Yamaha Rhino Forum - Rhino Forums.net
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post #1 of 5 (permalink) Old 03-09-2011, 07:41 PM Thread Starter
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Stalling (carb)issues with a 2008 Rhino 450

Thought I would also post this question on the main forum. I also posted on the 450 site:
I just picked up up my new to me 2008 Rhino 450. The previous owner had it for about 15 months and hardly used it, so it sat with the same gas Im sure. He did siphon out the old and addded new fule and a carb cleaner additive.
When we went to start it today, with the choke fully out, it would start right up. It continued to run well with full choke. After the engine warmed up, every time we pushed in the choke, the engine would stall. With choke full out again, it would start right up and run. Choke in, engine died out. Any ideas what I could check??, or what I could try?? I would like to troubleshoot a little on my own before giving it to my dealer. Thanks for all the previous help. Kerry
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post #2 of 5 (permalink) Old 03-09-2011, 08:24 PM
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For starters I would pull the carberator out, pull the cover off the bottom, remove the pilot and main jet and clean them. At the same time I would spray the rest of the carb with carb cleaner. Put it back together and see if that fixes the problem. Be aware that if the carberator has the original phillips head screws in the cover you will probably mess up at least one of them. You will want to replace them with stainless socket head screws so you will not have that issue in the future. They are metric threads (can't remember the size) so take one to the hardware store of your choice to match it up. By the way if you do a search on here there is a thread somewhere that has photos clearly showing the pilot and main jets. Lots of good carb info in that thread.

You don't really have to pull the carb all the way out just loosen the clamps holding it into the rubber sleeves and pull it out of the rubber sleeves and flip it over. There is enough slack in the cables to do this. You only need to unplug the heater wires on the bottom of the carb and unscrew the choke cable from the carb. After you have done it a couple of times it only takes about 10 minutes to take it out and put it back in. I have to do this a couple times a year to change the main jet when I go from Phoenix 1500' to the mountains 7000' and up.

07 450, SE Wheels, 2" rear spacers & 1" front spacers, Greasless OD Weights, Grim Reaper Tires, Custom Metal Roof, 1/2 Windshield, DirtLights HID, HW CDI, Benz Silent Exhaust, Venom 3500 winch, Second Skin sound dampening, Snorkled Air Intake to under Hood. 4,000 miles and never left me stranded.

Last edited by 1stRhino; 03-09-2011 at 08:30 PM.
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post #3 of 5 (permalink) Old 03-09-2011, 08:33 PM
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yeah pull the carb off and take it apart and clean it up with carb cleaner. you might want to get a new fuel filter too.
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post #4 of 5 (permalink) Old 03-09-2011, 08:38 PM
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Here is the link to the best carb thread on this forum.

How to jet a carb (Getting a little hot)

Go to post #41 for the photo showing the location of the jets etc. You will really want to read this whole thread. It is full of info on Rhino carbs.

Good Luck

07 450, SE Wheels, 2" rear spacers & 1" front spacers, Greasless OD Weights, Grim Reaper Tires, Custom Metal Roof, 1/2 Windshield, DirtLights HID, HW CDI, Benz Silent Exhaust, Venom 3500 winch, Second Skin sound dampening, Snorkled Air Intake to under Hood. 4,000 miles and never left me stranded.
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post #5 of 5 (permalink) Old 03-10-2011, 06:02 AM
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definitely pilot jet. I do carb cleans all day in my shop

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