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By Dra O
posted a while back - it was running at one point - I have all the plastic shroud off - it's down to frame and engine now
-fuel pump: when line from petcock is attached, no fuel comes out other side to carb; the line to the carb is open (can blow through it); I thought when I cranked engine that the pump would spit out fuel on other side but it does not; I removed fuel pump and opened it up - diaphragm looks good - but internal areas had lotsa calcification build up - I cleaned this out and dried it good - the clear plastic pieces (?diaphragms) aren't broken - the spring w/ steel ball on end moves freely; am putting it back on tomorrow; but can anyone answer about the pump? isn't it supposed to pump fuel through it... to other side... to carb? puzzling
-along with fuel pump: I replaced petcock 3 weeks ago (gas tank had rusty fuel in bottom - cleaned it out prior to new petcock); when I turn petcock arrow NOT to on or reserve, fuel comes out of line; when I turn it to on or reserve, fuel doesn't come out; puzzling
-I don't know what's on back of fuel pump - it's a valve that has a hose coming out of it - looks like it goes to engine/carb - I haven't traced this out yet - what is it?
-can squirt gas on air filter and engine will run for 2-3 seconds then stop - fuel in top of carb (under diaphragm) does same
-it likely needs carb rebuild - will get to this - but something isn't allowing fuel to get from fuel pump to carb
-I THINK it has a mikuni model x carb - diaphragm is ID 26mm OD 68mm - hard to find inexpensive diaphragm, I guess because it's a model x
-last thing - I replaced solenoid due to old one clicking; I HAVE to be charging the battery or it won't start/turn over - battery just goes dead; but if charging, it'll turn over nicely; i'm guessing it's a bad battery
-any help appreciated - I've never owned an ATV before - inherited this beast from grandparent in-law
Hi guys I'm in the market for a new ATV. I narrowed my choices down to King quad 750 Grizzly 700 and Rubicon 520, I own a 2006 500 Rubicon right now and I like the reliability and power for plowing. However it is not a capable ATV. When quading with other guys it falls short with ride quality and ground clearance. I also have a 500 King Quad 2015 which I like and will keep it for my wife. It is very strong and reliable also. However my plan is to sell my Honda Rubicon and replace it with a 2020 of one of the these mentioned above. Can anyone give me their take on one or all of these machines and why you picked what you picked?
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By Cory Macleod
Hi looking for help. My 700 fuel pump won’t cycle when I turn key on also my digital dash is not displaying anything it does light up yellowish but nothing else. If I pour fuel in the intake it will start for second
By Resurgence Small Engine Inc.
This past spring, Jonathan worked on a 1991 QuadRunner 250 that came with the fuel pump removed. We didn't find good information about connecting it online, so we made a video.
Below is the link to watch Jonathan describe the connections on the Suzuki fuel pump. This applies to both the Quadrunner and King Quad ATV models.
Hope you find it informative!
Resurgence Small Engine Inc.
Hi everyone, I received a 98 Yamaha Timberwolf from my brother for free, and I'm working on getting it going.
I am having the following problem:
The engine is backfiring through the carb.
I have done the following to try and get the four wheeler running:
Rebuilt the carb and set the air screw to 1-1/4 turn out and the circlip at middle position 3
Replaced the coil, because the cable was loose at the coil end
Repaired the main ground, coming from the battery
Replaced the ignition switch, because my brother couldn't find the key. New switch tested good
Tested the kill switch and it tested good
New coil tested goodfor both primary and secondary coils
Pickup coil resistance is at 195, which is correct
My source coil, is where I believe the issue is. The resistance is 310ohms, and it should be between 428-523ohms
When I opened the stator housing, there was significant oil, which I have read is normal. Does it sound like I'm on the right track replacing the source coil? Could this be causing my backfiring issue? It looks like the source coil is part of the stator assembly, is this correct? 4BD-85510-20-00 STATOR ASSY
I have a 96 Yamaha Big Bear 350 2x4 which up till yesterday was running ok. However out of the blue as I was going through the field it started missing if you tried to go over half throttle. It will start and run up to about half throttle and then it starts to miss. I changed to a new spark plug thinking it maybe had some carbon buildup but that didn't help. I put a new filter on it this spring as I do each spring but it seems more like something electrical in nature. Anny ideas? Thanks
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