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vusi Posted on Oct 03, 2019

Hi can you please help me with bruin 350 is running too rich then when is hot struggles to start. vusi

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David Roberts

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  • Contributor 38 Answers
  • Posted on Oct 03, 2019
David Roberts
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Related Questions:

0helpful
1answer

2005 Yamaha Bruin 350 ATV. What will cause my ATV not to run? Gas is coming from drain tube?

Question edited for clarity.
Question moved from motorcycles to ATV model category.

Turning over has nothing to do with the carburetor! Your battery is flat. It will need charging.

If the carb is leaking, it is because the float is set wrong or the float valve needle isn't seating properly.

Engines only need three things to run.

A supply of clean fresh fuel (not sitting a year)
A Spark at the right time.
Compression.

You say you cleaned the carb **in** carb cleaner, as opposed to *with* carb cleaner. Did you strip it down, check the float for holes, clean the jets and needles?
1helpful
1answer

2004 Yamaha Bruin 350 ATV would not shut off!

Question edited for clarity. Add maker.
Question moved to Yamaha Bruin category.

Likely to be a fault with the ignition switch Karen. There is help in the link.

https://www.google.com/search?q=2004+Bruin+350+won%27t+switch+off

..
0helpful
1answer

Yamaha 2004 350 bruin won't start? think there's water in the carb, it's been sitting for about a year.

there should be a screw located on the bottom of the float bowl. but on some quads it might not be easy to reach without long skinny flat head screwdriver. my suggestion is to take off the carb and give it a good cleaning. water can cause deposits and lead to clogs
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1answer

Where is the main fuse for a yamaha bruin 350 four wheeler

Close to the battery on thr red wire in a plastic cylindrical fuse holder.
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Wont idle without choke being used

Main jet dirty. Likely Ethanol fuel fouling. Remove and clean jet. Check all rubber tubing to/from carb for cracks/deterioration and replace.
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1answer

My Yamaha Bruin will only go about 12-15 mph at high rpm?

If it is a automatic transmission the drive belt may be worn out.
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Diagram for carb on 350 bruin

I am going to go with a few taps on the side of the carb around the bowl .. use the handle of a screwdriver .. it is mostlikely a stuck float.. if that doesn't fix it take the carb off pull the bowl look at the needle and seat make sure there isn't something keeping the needle from fitting snugly into the seat. Not sure if the tip of the needle is rubber or the seat it's self on this carb.. one or the other will be. Look for cracks in the rubber. If none I would try to re adjust the float setting ..
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