Thank you for the video good job. I have a 350 Big Bear and while I was trying to start the engine it would only run for a few seconds. The small of gas was very strong. I removed the seat and the air filter housing and ¼ of the housing was filled with gas/oily mixture of some sort. I keep the machine in the shop so there was no water in the system but it would not run very well at all. After removing the gas and cleaning up the machine I removed the crank case breather hose and while starting the engine it was running a lot better, but the hose was blowing gas and oil out of the breather hose. The longer I let it run the more gas came out until after 30 minutes it slow down and stopped. After 1 hour there was only a drop every two seconds coming out of the breather hose. The question is what caused it and what do I need to do to make it work better? I did let it run for about 2 to 3 hours. Any help would be great. Thank you for your videos.
Great video! thanks for sharing I rebuilt my carb and replaced the manifold It runs ok but it seem to have a pop pop at idle. can you help with that? thank again
Thx for making these videos, really well explained and clear. I have a 1992 big bear thats blowing balck some and burning through spark plugs so will try cleaning the carb. Is there a difference between the 92 and 95 carbs?
Hi donyboy73, This video is so helpful! thank you so much for the tutorial. I'm having trouble finding a 1995 yamaha BB 350 4wd carb kit....Can you confirm that this kit will work MD03-304 12-9926? Yamaha stopped making carb kits for Big Bears in 92? I think. I'm hoping that one will work. Thanks for posting such helpful videos!
all your equipment seems to run great when you're done! what do you think of this: i got an old mower for free. B and S 6 horse. the intake tube that feeds gas from the carb to the motor was missing. I found a replacement but dont have the gasket where it mounts to the engine. A little RTV silicone do the job?
You have dirty pilot jet and or clogged idle mixture screw passage. Typicaly for something that dirty you will want to fully disassemble and soak the carb and its individual parts in a gallon of carb cleaner. Not the junk you buy in a spray can. The gallon of cleaner can be bought at any auto parts store and will run about 20 bucks.
i have a yamaha big bear 350, it wont stay running, iv adjusted the idle screw various times and it wont stay running when its on it runs for about a minute then it like "chokes" and shuts off. do you think it could be from a dirty carb or is it somthing els internally? thanks!
I have a 86 moto 4 and I'm surprised on how similar big bears and moto 4s are. Great and helpful vid!
Detailed great! You know your stuff! Thanks. Max
@xXBMXSAINTXx yes, it usually helps
Good tip about the logo
Very clear how to! Thanks very much, I have the exact same problem of the needle not seating.
@Mrcodvid i would celan the carb and make sure the needle valve is not stuck
Thank you for the video good job. I have a 350 Big Bear and while I was trying to start the engine it would only run for a few seconds. The small of gas was very strong. I removed the seat and the air filter housing and ¼ of the housing was filled with gas/oily mixture of some sort. I keep the machine in the shop so there was no water in the system but it would not run very well at all. After removing the gas and cleaning up the machine I removed the crank case breather hose and while starting the engine it was running a lot better, but the hose was blowing gas and oil out of the breather hose. The longer I let it run the more gas came out until after 30 minutes it slow down and stopped. After 1 hour there was only a drop every two seconds coming out of the breather hose. The question is what caused it and what do I need to do to make it work better? I did let it run for about 2 to 3 hours. Any help would be great.
Thank you for your videos.
Excellent video series. Much appreciated!
Once again, beautyful job donyboy
Great video! thanks for sharing I rebuilt my carb and replaced the manifold It runs ok but it seem to have a pop pop at idle. can you help with that? thank again
Good work and good job explaining! I have a 95 Moto 4 with the same 350 engine.
@ringbolt9 yea it's been hot
Excellent series donyboy. Thanks a million man. J
Thx for making these videos, really well explained and clear. I have a 1992 big bear thats blowing balck some and burning through spark plugs so will try cleaning the carb. Is there a difference between the 92 and 95 carbs?
Bigbear 350 was a good bike. I like the older Yammys with the high low transmission.
I see you did a good job bro 👍.... I have a 2008 big Bear 400,... That I've been needing repairs on.......,JJ...
yea my friend has a moto4 and we blew the transmission out of it and got a new one and it runs great
I have same quad .. its a tank .. I love bigbear350
Hi donyboy73,
This video is so helpful! thank you so much for the tutorial. I'm having trouble finding a 1995 yamaha BB 350 4wd carb kit....Can you confirm that this kit will work MD03-304 12-9926? Yamaha stopped making carb kits for Big Bears in 92? I think. I'm hoping that one will work. Thanks for posting such helpful videos!
Thank you for these videos they so helpful!!
all your equipment seems to run great when you're done! what do you think of this: i got an old mower for free. B and S 6 horse. the intake tube that feeds gas from the carb to the motor was missing. I found a replacement but dont have the gasket where it mounts to the engine. A little RTV silicone do the job?
thanks buddy! just thought i'd get the "expert opinion" . hey do you have nice weather up there now --- finally??
Nice job!!
Cool! runs good!
Donyboy: Great video!
@boat6868 thanks dude
@ringbolt9 should do the job
Thanks and also whenever,i turn the fuel switch on gas pours out of one of the lines. What should I do?
You have dirty pilot jet and or clogged idle mixture screw passage. Typicaly for something that dirty you will want to fully disassemble and soak the carb and its individual parts in a gallon of carb cleaner. Not the junk you buy in a spray can. The gallon of cleaner can be bought at any auto parts store and will run about 20 bucks.
my honda atc 200 super red does the same thing. i have to put the choke on just to change out of neutral
Love my big bear to death!!! Its an amazing quad :)
@TheBigtex54 at the yamaha dealer
at 4:10 where the hose go because on mine it is going to the gas tank air vent and im not sure if it go there
clean it with carb cleaner
very very nice Job on this video thank you
i have a yamaha big bear 350, it wont stay running, iv adjusted the idle screw various times and it wont stay running when its on it runs for about a minute then it like "chokes" and shuts off. do you think it could be from a dirty carb or is it somthing els internally? thanks!
where did you get the carb kit??
where did you get the carb kit at?
i got the same bike and my carb is getting cleaned now but once i put it back together how do i no how to set the needles and the other components ?
Is there anything to i can to to fix a sticky float without buying a new one?
I am just wondering what kit carb kit you used? donyboy73
my neighbor has one that looks like this except it is a 175,2wd...and that's about it other than that it looks exacally like this.
Mine will only run with the choke out any idea why?
Where is the idle adjustment
@olemiss46 please tell ur friends about my channel
o i guess i forgot to say it will run, i mean it dosent idle sorry!
where did you get the carb kit??