Brute 650 problem

**Killer__Shee** · 01-11-2009, 08:15 PM

I've got a '07 Brute 650 SRA. It has always ran great with no problems starting or idling. It has sat for 2-3 months, and when I got it out for a ride there is a bad stumble in the bottom and severe popping from the exhaust when I let off from WOT. The quad will idle with the choke on when cold, but dies when i shut off the choke. Once it is warmed up, it won't even idle with the choke on. Has anyone else had this problem? Aby suggestions on where to start. I plan on tearing into the carbs, but was wondering if the choke sticking was still a problem like it was with the older Prairies and V-Forces. If so, does anyone have instructions on how to fix the stuck choke problem? Thanks.

extreme750 · 01-11-2009, 08:31 PM

I had the same problem with my BF750 and it turned out I had water in my fuel tank, so before taking your carbs apart like i did and end up with the same problem I would try to siphon out the old fuel first.

05-BF-750 · 01-12-2009, 06:08 PM

Clean your carbs. You can't leave gas in your carb bowls if your going to let it sit for months at a time. Gas turns into gel. You will need to clean all your jets with a small wire. Very easy about 2 or 3 hours of work.

Sapper33 · 01-16-2009, 10:50 AM

I ran into an odd problem last time I ran my '08 BF 650i

Went for a rip at about -25C(-20F), while it didn't want to start, it got going (nothing likes to start that cold, especially carbs). It warmed up just fine, and seemed to be running fine, but I was at WOT for a good stretch (once warmed up), I let off the throttle rather than braking to slow down, but once the quad actually stopped, it stumbled and died. Had to be 60yrds of slowing down. I got it started again, but it was more difficult than I was expecting considering how warm the engine was.

Same thing happened again, was running close to WOT for a bit, then slowed down and "puttered" into the yard, got off the bike and went inside, and when I can outside a few min later, it had died again.

I'd really like to get this issue sorted out as I want to use this as a work quad next winter, but if it's not going to run well in the winter I'll have to settle for a set of Hondas...(shudder)

01-11-2009, 08:15 PM	#1
Killer__Shee Premium Member Feedback Score: 0 reviews Join Date: Jul 2003 Location: Western Nebraska Posts: 1,533 (0)	I've got a '07 Brute 650 SRA. It has always ran great with no problems starting or idling. It has sat for 2-3 months, and when I got it out for a ride there is a bad stumble in the bottom and severe popping from the exhaust when I let off from WOT. The quad will idle with the choke on when cold, but dies when i shut off the choke. Once it is warmed up, it won't even idle with the choke on. Has anyone else had this problem? Aby suggestions on where to start. I plan on tearing into the carbs, but was wondering if the choke sticking was still a problem like it was with the older Prairies and V-Forces. If so, does anyone have instructions on how to fix the stuck choke problem? Thanks. __________________ *Keep The Rubber Side Down !!!* 2008 Honda 700XX 2007 Honda Rancher 420ES

01-12-2009, 06:08 PM	#3
05-BF-750 Senior Member Feedback Score: 11 reviews Join Date: May 2007 Location: Mt Comfort Indiana Posts: 3,047 (4)	Clean your carbs. You can't leave gas in your carb bowls if your going to let it sit for months at a time. Gas turns into gel. You will need to clean all your jets with a small wire. Very easy about 2 or 3 hours of work. __________________ 2005 FPS 700= FPS BBK, VFJ clutch, Quadboss full skids, K&N Filter,12 hole mod, 42 pj, LTE dual exhaust, Spark plug boot mod, ASR SS Brake Lines, Crossover intake, Razr 2's on Hiper Tech 3, Orange Power Madd Handguards, TrailTech bars, mount , Vector, Carbon Fiber hood, H.E.P Taillight, AC front bumper, AC nerf bars, fan switch 2007 Brute Force 665= VFJ clutch, 82mm pistons, CWR 418 cams, Custom BKuzzy exhaust, K&N filter, UPP intake, Electric fuel pump, Fan switch, 42 pilots

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01-11-2009, 08:31 PM	#2
extreme750 Member Feedback Score: 0 reviews Join Date: Apr 2008 Posts: 50 (2)	I had the same problem with my BF750 and it turned out I had water in my fuel tank, so before taking your carbs apart like i did and end up with the same problem I would try to siphon out the old fuel first.

01-16-2009, 10:50 AM	#4
Sapper33 Junior Member Feedback Score: 0 reviews Join Date: Jul 2008 Posts: 7 (0)	I ran into an odd problem last time I ran my '08 BF 650i Went for a rip at about -25C(-20F), while it didn't want to start, it got going (nothing likes to start that cold, especially carbs). It warmed up just fine, and seemed to be running fine, but I was at WOT for a good stretch (once warmed up), I let off the throttle rather than braking to slow down, but once the quad actually stopped, it stumbled and died. Had to be 60yrds of slowing down. I got it started again, but it was more difficult than I was expecting considering how warm the engine was. Same thing happened again, was running close to WOT for a bit, then slowed down and "puttered" into the yard, got off the bike and went inside, and when I can outside a few min later, it had died again. I'd really like to get this issue sorted out as I want to use this as a work quad next winter, but if it's not going to run well in the winter I'll have to settle for a set of Hondas...(shudder)

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