It's not wafflage Jim it's imparting interesting information and now I know how a fuel pump works. Every day is a school day. Thanks, Jiim keep em coming.
I won't be the only person on here to tell you Jim that it's not wafflage. To anyone tuned in to watch this it's GOLD. Massively interesting to hear your mind working and learning from what comes out as "wafflage". I'm all ears mate, keep it coming!
I enjoy every single one of your vids, absolute master of your trade, thanks for running this channel, I appreciate it very much since it takes a lot of extra effort.
+1 who agrees that this is not wafflage. Very useful info. I own a Yamaha that uses this type of pump. Thank you, Jim. Love your videos - keep 'em coming.
Thanks for the great run down on the fuel pump having had English car with electric fuel pumps I can tell you that you did a fine job explaining and the slow mo of points operation was great. Please stop accusing yourself of waffling you explain in great detail and it's appreciated. Since finding this channel watch every video released . Thanks Jim
Jim, I think you put up very interesting and diverse content which wouldn’t be the same without waffleage. I like your Yamaha “barn find”. I recently had my first true barn find, a 2003 Suzuki Sv1000 for $400. It had not been registered for 10 years. The guy I bought the bike from tried to fix the rust in the gas tank, but didn’t realize he needed to take the fuel pump out of the tank before he filled it with Muriatic acid. Needless to say the pump was f**ked, I rebuilt the pump with a new motor, cleaned the old gas resin out of the tank (it wasn’t rust) cleaned the fuel injection lines injectors, throttle body, hooked up a new battery, gave her gas and she started right up.
love it when someone thinks ahead and drains the floatbowls. Sounds like life got away from the owner, they thought it'd be a few month hibernate and turned into however many years....
I bet in this throw away world not many modern day mechanics have a clue how a fuel pump works. Learn something new every time I watch one of your videos. Keep up the good work.
I think the fuel pump is electrically similar to an old -school electrical bell. The solenoid energises, forces a push a rod against a spring to hit the bell part which makes the sound. And movement causes contact points to go open, de-enegising solenoid. Rod then returns via spring until the points connect, re-energising the solenoid. And repeats.
These videos on explaining the inner workings and cleaning of carbs is the best I have seen as well as all the other repairs and maintenance. You have the right blend of information verses keeping it interesting. Many thanks Jim.
Nice little tutorial on the fuel pump, and for me , at the end putting your finger over the fuel hose and showing how pressure in and out works, pulled it all together . Well done.
I stumbled upon your videos purely by happenstance, and I subscribed within minutes of the first video I watched, and have watched every upload since. Love your content mate.
Only found you a few weeks ago, subscribed after watching 1st video. Brilliant content. You are the elephants danglies ... tip top. Thanks for all the knowledge so far 👍
Always use a JIS drivers on Japanese stuff. A Phillips head on those float bowl screws would have rounded them out! For those that don't know you can tell if it's a JIS head because it will have a dot on it. 23:05
Every morning(sometimes at night also) i flip thru the Tube to see what new vids you post...As i am always messing with some sort of mechanized vehicle i look to see what you have goin on. Especially interested in the electrical diagnostics and what devices you use to hunt down the issues. Knowledge is power especially when your bringing some dead soldier back to life. You real world approach works for me i have learned a TON of new stuff. Carry on soldier! and Thanks!
Hi Jim, I find your work fascinating. Thou must admit to being lost at times on new bikes and cars. Just to many censors. I tend to forget more these days at 65, so love to watch you work. I was a 2 stroke man Suzuki,s TS 250 GT250/380/750 but maddest bike I ever rode Yamaha 350RD shit off a shovel. The GT 750 best looking bike ever. Keep up your hard work.
My son has an R1 & it's been sat 18 months in his garage because he says the roads are that bad around here it's too dangerous to ride it but it doesn't help that he hasn't got the time to ride it since he started his new business up. It's a shame really because he knows it'll de-stress him massively if he just bloody rode it.👍
Use JIS screwdrivers/bits for any disassembly on a Japanese bike. The fasteners may look like common Philips head but they're JIS. I discovered that tidbit of information years ago working on other powersports equipment from Japan.I stripped out many " Philips" head bolts only to find I was using the wrong screwdriver.
Ace vid. a lot of them lately are Yamahas which is great as my Thunderace shares a lot of parts with the early R1. Keep up the waffling; the message still comes across loud and pretty clear. Much better to be yourself and act natural 😁👍
My son has an R1 & it's been sat 18 months in his garage because he says the roads are that bad around here it's too dangerous to ride it but it doesn't help that hasn't got the time to ride it since he started his new business up. It's a shame really because he knows it'll de-stress him massively if just bloody rode it.👍
I'm at 4:10, but if it has the Akra system, don't they wire the EXUP open? Wow, those carbs! The difference between running them dry before putting into storage.
Knowledge is king, £150ish saved for your customer.when he see this video he be happy that he has sent it to you. A garage would of said needs a fuel pump bud
Very helpful Not waffle in my mind. These parts usually get put in the bin Now you have shown how the part works and I strongly recommend that you show a few more videos like this Maybe call it waffle fixings 😅 Trust me Joe Public is fed up with throwing stuff away that could have been fixed Topman, thanks
Eh up Jim. This is the contents Im looking for. Proper in depth engineering. Never really understood how the tappy tappy fuel pumps worked before but I do now and I wouldn't hesitate to strip and fettle when needed now. And yes, I was shocked to see how clean those carbs were too. There's bound to be some varnish in the jets and drilling though. And a dare say, I never heard an f bomb throughout the whole video. Well done buddy 😁👏👏👏
I am subscribed, I always like. Just another comment to say absolutely brilliant content, just love watching Jim on a Friday. I am led to believe comments help the algorithm as well.
Waffle on, Jim...only found your stuff recently and I'm finding it fantastic. Super informative, down to earth. Money is super tight for me at the moment due to illness and not being able to work. Subscribed, and will get on your patreon asap! Keep the waffling, and the great content coming!
Jim thank you for posting this very Interesting video , excellent bit of explaining for all to understand. You are a very talented Motorcycle engineer and it's clear you know your stuff. Top man
I've been working on motorcycles since I was 8 now 32 just recently brought a cbr 600 back from its grave but you have reminded me of things I have missed even more still teaching me .. carburettor tuning is a dark art already once 90s bikes are vintage and the other half are fighting over them the prices will go mad
Back in the day plug chopping and porting your 2 stroke was the norm now your waiting months and paying as much as the best around wants to charge. Can only imagine what it's going to be like
2007 KTM 950 Super Enduro with that style fuel pump - failed me on first day of a 3 day trip and a late night ride in a trailer back home☹️. Great explanation of how that style pump works and fails👍
Good one Jim. As I'm of an age, the minute you removed the points cover on the pump I'm like "give the points a clean, give the poits a clean" But then agin I come from the age of the SU electric fuel pumps.
The fuel pump on my Fazer 1000 was constantly priming. I replaced it with a pattern one which only lasted 8 months before leaving me stranded by the side of the road. So I bit the bullet and bought an OE one. £300 from Fowlers but hopefully more piece of mind than another pattern one. Good video as always.👍
Excellent video, Jim. Thanks for taking the time to explain how it works & that they can be repaired. I bought a spare, used fuel pump for my ( fully functioning ) 1998 ZX-6R G1 &, I.I.R.C., the cover over the points looks identical to this one. I'm gonna have to dig it out over the weekend as I'm now curious to see if the points and / or pump ends are removeable or permanently attached. Getting back to my ZX-6R, when I bought it as a full strip-down, service & tidy up project, when I removed the fuel tank it looked just like this R1 .... covered in a healthy layer of dust & muck. After removing components & cleaning them as much as I could, I was amazed to find that the bike was in pretty good condition after being under all the crud for gawd knows how long. The vast majority of stock brackets & fasteners looked almost new, not 24 years old as the bike was at the time I did the work., so, you might be surprised at how easily it'll clean it up. Looking forward to Part 2 of this recommissioning project. Oh ! Please stop waffling on about your waffling. I, for one, don't mind the waffling one bit. Am I making sense ? ? 😛
Great video. My understanding of the fuel pressure thing if anyone's interested: The pump diaphragm and spring purely creates flow. Restriction of the flow is what creates pressure. The fuel system creates that restriction. The one-way outlet valve doesn't have a closure spring so works on pressure differential. More pressure on one side will cause it to move in that direction, exactly the same as your heart valves. The forces the spring has to overcome is dictated by the force pushing back on the other side of the valve, which is the back pressure from the rest of the fuel system. This makes the valve basically invisible to the pressure system as it is completely passive to fuel flow in the desired direction. The point that the spring can't overcome that back-pressure and fails to open the valve dictates fuel pressure.
The vocabulary you are looking for to describe the action of the points mechanism is a "toggle action" where the lever has to be beyond a certain point to snap close, and the same in reverse to "Toggle" open the points again. Its the same action that you can hear when you use the indicators but this is elecronically activated, but the switching mechanism is the same.
I bought a set of those jis bits a while back,came in very handy on a really original Yamaha dt175 I bought a while back,it’s that original that it still had its original engine case screws & as you probably know,they’re really soft,small tap with an impact driver & they were out & best of all,no damage to the screws,not an expensive purchase but a very useful one,enjoying the videos,great insight
Jim. love all your vids, keep 'em coming. Great info on the fuel pump, at least I now know why they stop pumping and don't keep building pressure! I'd be sorely tempted to throw on a pattern pump - especially after you poking the rubber valve flaps like that ;)
Very similar to the old points ignition systems fitted before electronic ignition was common I used to use wet and dry paper to clean, fold in half did both points at the same time
Hi jim,I agree with mister previous,not waffle,a better understanding of the individual parts..loving the content..just wish I had the confidence to work on my 1995 speed triple in the same way.
Thanks for the pump teardown and explanation. That's the next thing I need to check on my CBR600F3. Stumbles and dies on acceleration. However, I suspect what I might really need to do is clean out those transition fuel channels in my carbs which I've also learnt about on your channel. Such a pain to get them off and on again though. Didn't know about them earlier. I'll try the fuel pump and the side stand switch first then back to the carbs.......Thanks for your excellent channel.
It's not wafflage Jim it's imparting interesting information and now I know how a fuel pump works. Every day is a school day. Thanks, Jiim keep em coming.
I’m glad you’ve given up on not swearing 😂😂
FFS stop waffling
I was just thinking the same but it wouldn't be the same 😂😂
Not pandering to wet wipes 😂 👍
I won't be the only person on here to tell you Jim that it's not wafflage. To anyone tuned in to watch this it's GOLD. Massively interesting to hear your mind working and learning from what comes out as "wafflage". I'm all ears mate, keep it coming!
I enjoy every single one of your vids, absolute master of your trade, thanks for running this channel, I appreciate it very much since it takes a lot of extra effort.
+1 who agrees that this is not wafflage. Very useful info. I own a Yamaha that uses this type of pump. Thank you, Jim. Love your videos - keep 'em coming.
Hand down the most knowledgeable bike mechanic I've ever watched. Love your videos and the detailed explanations
Great channel and one of my favorite bikes no holes barred R1 .
No ABS , TC , Anti wheelie . A real rocket ship
Highside city 🙂
@bigfilsing squeaky bum moments 😜
@@ragnarironspear1791 all the way to A&E 😜
This makes me miss my 2001 R1…
I wish I still had her.
Agreed, mine was 2000 😞
Thanks for the great run down on the fuel pump having had English car with electric fuel pumps I can tell you that you did a fine job explaining and the slow mo of points operation was great.
Please stop accusing yourself of waffling you explain in great detail and it's appreciated. Since finding this channel watch every video released . Thanks Jim
Jim, I think you put up very interesting and diverse content which wouldn’t be the same without waffleage. I like your Yamaha “barn find”. I recently had my first true barn find, a 2003 Suzuki Sv1000 for $400. It had not been registered for 10 years. The guy I bought the bike from tried to fix the rust in the gas tank, but didn’t realize he needed to take the fuel pump out of the tank before he filled it with Muriatic acid. Needless to say the pump was f**ked, I rebuilt the pump with a new motor, cleaned the old gas resin out of the tank (it wasn’t rust) cleaned the fuel injection lines injectors, throttle body, hooked up a new battery, gave her gas and she started right up.
I whish I had this content available years before. Would have saved me a few headaches and money. Thanks Jim.
love it when someone thinks ahead and drains the floatbowls. Sounds like life got away from the owner, they thought it'd be a few month hibernate and turned into however many years....
Or the pump packed up and the carb ran dry
Jim, don't change. You are a fantastic mechanic and educator on these wonderful machines.
Nothing wrong with that waffling. We all love it!
Regards from Sweden
Agree with a lot of the comments on here, you call it waffledge, we call it an education. Keep it up!!
I bet in this throw away world not many modern day mechanics have a clue how a fuel pump works. Learn something new every time I watch one of your videos. Keep up the good work.
Great explanation of how a fuel pump works
I have a 5jj tucked away and this video has made me realise it’s time to stop making excuses and sort it out, thankyou!
I think the fuel pump is electrically similar to an old -school electrical bell. The solenoid energises, forces a push a rod against a spring to hit the bell part which makes the sound. And movement causes contact points to go open, de-enegising solenoid. Rod then returns via spring until the points connect, re-energising the solenoid. And repeats.
We watch because you show us how it should be done.
It's nice to be invited inside.
Waffle on holy one.
I am a hobby mechanic and I find your videos very helpful keep it up👍😀
These videos on explaining the inner workings and cleaning of carbs is the best I have seen as well as all the other repairs and maintenance. You have the right blend of information verses keeping it interesting. Many thanks Jim.
The most self conscious explainer I know. Nothing wrong with your explanations.
JIS = japanese industrial standard.
If you work on Japanese bikes you should have a set of JiS srewdrivers.
Nice little tutorial on the fuel pump, and for me , at the end putting your finger over the fuel hose and showing how pressure in and out works, pulled it all together . Well done.
I stumbled upon your videos purely by happenstance, and I subscribed within minutes of the first video I watched, and have watched every upload since. Love your content mate.
Only found you a few weeks ago, subscribed after watching 1st video. Brilliant content. You are the elephants danglies ... tip top. Thanks for all the knowledge so far 👍
Jim please stop worry about how you explain things, you are a very good teacher, and I can follow exactly how you explain things
Always use a JIS drivers on Japanese stuff. A Phillips head on those float bowl screws would have rounded them out! For those that don't know you can tell if it's a JIS head because it will have a dot on it. 23:05
Waffledge = Knowledge Thank you for sharing yours Jim.
Jim, you've got the best 'how to' channel in TH-cam land 👍🏻😎🍻
"F me, I did not see that coming!" That makes two of us, good sir.
Every morning(sometimes at night also) i flip thru the Tube to see what new vids you post...As i am always messing with some sort of mechanized vehicle i look to see what you have goin on. Especially interested in the electrical diagnostics and what devices you use to hunt down the issues. Knowledge is power especially when your bringing some dead soldier back to life. You real world approach works for me i have learned a TON of new stuff. Carry on soldier! and Thanks!
Hi Jim, I find your work fascinating. Thou must admit to being lost at times on new bikes and cars.
Just to many censors.
I tend to forget more these days at 65, so love to watch you work.
I was a 2 stroke man Suzuki,s TS 250 GT250/380/750 but maddest bike I ever rode Yamaha 350RD
shit off a shovel. The GT 750 best looking bike ever.
Keep up your hard work.
My son has an R1 & it's been sat 18 months in his garage because he says the roads are that bad around here it's too dangerous to ride it but it doesn't help that he hasn't got the time to ride it since he started his new business up. It's a shame really because he knows it'll de-stress him massively if he just bloody rode it.👍
Don't change a thing pal simply brilliant
Use JIS screwdrivers/bits for any disassembly on a Japanese bike. The fasteners may look like common Philips head but they're JIS. I discovered that tidbit of information years ago working on other powersports equipment from Japan.I stripped out many " Philips" head bolts only to find I was using the wrong screwdriver.
Ace vid. a lot of them lately are Yamahas which is great as my Thunderace shares a lot of parts with the early R1. Keep up the waffling; the message still comes across loud and pretty clear. Much better to be yourself and act natural 😁👍
You need syrup for the waffles. Seeing your or hearing the thought process is good. Its all good. Cheers from middle America.
My son has an R1 & it's been sat 18 months in his garage because he says the roads are that bad around here it's too dangerous to ride it but it doesn't help that hasn't got the time to ride it since he started his new business up. It's a shame really because he knows it'll de-stress him massively if just bloody rode it.👍
As a dutchy i'm learning every video, mate. On tech and cursing.
Keep on the good work, Jim, you wanker.
(Did i learned?)
Keep on waffling, it’s massively informative 👍
I now feel like an expert in fuel pumps, 👍
Jim keep reminding us to like, I for one do genuinely forget 😳. Awesome content, keep it up.
Clean float bowls, Karma for the fuel pump tutorial.
Thanks Jim.
I'm at 4:10, but if it has the Akra system, don't they wire the EXUP open?
Wow, those carbs! The difference between running them dry before putting into storage.
Knowledge is king,
£150ish saved for your customer.when he see this video he be happy that he has sent it to you. A garage would of said needs a fuel pump bud
Or an ECU, it must be faulty since it doesn't prime...
Very helpful
Not waffle in my mind. These parts usually get put in the bin
Now you have shown how the part works and I strongly recommend that you show a few more videos like this
Maybe call it waffle fixings 😅
Trust me
Joe Public is fed up with throwing stuff away that could have been fixed
Topman, thanks
Another great educational vlog Jim ✊ and efficient service for the client! Quality.
Eh up Jim. This is the contents Im looking for. Proper in depth engineering. Never really understood how the tappy tappy fuel pumps worked before but I do now and I wouldn't hesitate to strip and fettle when needed now. And yes, I was shocked to see how clean those carbs were too. There's bound to be some varnish in the jets and drilling though.
And a dare say, I never heard an f bomb throughout the whole video. Well done buddy
😁👏👏👏
Grew up around BMC motors so spent a lot of time working on SU fuel pumps, same idea just a bit bigger, still found it interesting Jim.
ITS Not waffling , its fault finding out loud, great content as always
I am subscribed, I always like. Just another comment to say absolutely brilliant content, just love watching Jim on a Friday. I am led to believe comments help the algorithm as well.
Love an R1!
Chooch..a great word Jim...learning lots.
That swear box must be massive...lol FH...
Those stuck screws reminded me, need to give some love to my little 3/8" impact driver.
Loving the vids Jim. As I get older I do less and less work on my own bikes, and my kids bikes, but I love your process and colourfull language 😂
Always looking forward for your Friday videos... And those carbs looks amazingly clean
Favourite tools video please Jim
New watcher in Canada. I do carbs all the time on snowmobile. Triples and quads. Easy stuff if they were serviced correctly. Good vids. Thanks
Great video. I know the theory of how those pumps work, but now I know what is involved. Love these videos…
Mate keep woffoling
I have a 99 R1
You have just helped me no end 😊😊
Just in case video love it Jim
Mr john😂
Waffle on, Jim...only found your stuff recently and I'm finding it fantastic.
Super informative, down to earth.
Money is super tight for me at the moment due to illness and not being able to work.
Subscribed, and will get on your patreon asap!
Keep the waffling, and the great content coming!
Great guy great methodical mechanic and I wish he was working here in Cumbria 😂
Jim thank you for posting this very Interesting video , excellent bit of explaining for all to understand. You are a very talented Motorcycle engineer and it's clear you know your stuff. Top man
I've been working on motorcycles since I was 8 now 32 just recently brought a cbr 600 back from its grave but you have reminded me of things I have missed even more still teaching me .. carburettor tuning is a dark art already once 90s bikes are vintage and the other half are fighting over them the prices will go mad
Back in the day plug chopping and porting your 2 stroke was the norm now your waiting months and paying as much as the best around wants to charge. Can only imagine what it's going to be like
Yay I learned how a fuel pump work! 🙂
Knowledge is power. 'The use of knowledge is power.' knowledge just sits around doing nothing otherwise.
Alright waffle man, Subscribed!😅
The fuel pump symposium really was helpfull and educational!
Thanks!
Love this detail and special effects.
2007 KTM 950 Super Enduro with that style fuel pump - failed me on first day of a 3 day trip and a late night ride in a trailer back home☹️. Great explanation of how that style pump works and fails👍
Good one Jim. As I'm of an age, the minute you removed the points cover on the pump I'm like "give the points a clean, give the poits a clean" But then agin I come from the age of the SU electric fuel pumps.
Brilliant video! I suspect I have a similar problem with the fuel pump on my ZX6R and this will help me understand and diagnose a lot more easily!
The fuel pump on my Fazer 1000 was constantly priming. I replaced it with a pattern one which only lasted 8 months before leaving me stranded by the side of the road. So I bit the bullet and bought an OE one. £300 from Fowlers but hopefully more piece of mind than another pattern one. Good video as always.👍
Just subscribed and liked even though I do not own a "superbike", only a cheap 125 that is just lovely.😀
On my 99 and 98 R1 always turned fuel tap off and ran bike until it stopped before lying up for winter , possible answer for nice clean carb bowls 🙂
I'm sure it's been said before, but waffle away Jim. The more you teach me the better. Thank you. Have become a Patreon.
Excellent video, Jim. Thanks for taking the time to explain how it works & that they can be repaired. I bought a spare, used fuel pump for my ( fully functioning ) 1998 ZX-6R G1 &, I.I.R.C., the cover over the points looks identical to this one. I'm gonna have to dig it out over the weekend as I'm now curious to see if the points and / or pump ends are removeable or permanently attached. Getting back to my ZX-6R, when I bought it as a full strip-down, service & tidy up project, when I removed the fuel tank it looked just like this R1 .... covered in a healthy layer of dust & muck. After removing components & cleaning them as much as I could, I was amazed to find that the bike was in pretty good condition after being under all the crud for gawd knows how long. The vast majority of stock brackets & fasteners looked almost new, not 24 years old as the bike was at the time I did the work., so, you might be surprised at how easily it'll clean it up. Looking forward to Part 2 of this recommissioning project. Oh ! Please stop waffling on about your waffling. I, for one, don't mind the waffling one bit. Am I making sense ? ? 😛
That's one gorgeous bike!
Excellent video. I really enjoyed the fuel pump explanation!
Great one hand dexterity Jim...you could peel an orange in you pocket
Excellent fix on the pump!
Wow dude you out did urself with this one... Loved the detailed descriptives... Awesome.
New subscriber 😊👍.... Thanks for taking the time out filming your waffling 😂...... It is very informative.... Don't change a thing 👍.
Awesome video. Nice thought process, never saw one of these pumps inside. Thanks Jim
Fantastic hard earned knowledge given out for free....amazing stuff! Thanks for all these gems of info that allows these great bikes to live on.
Thumbs up and a subscribe, which is a fair swap for your brilliant knowledge
Laser 7724 JIS impact bits 3/8" 👍 amazing for stripped Philips and pozi too!
Every tool has a hammer side.
Great video.
My understanding of the fuel pressure thing if anyone's interested:
The pump diaphragm and spring purely creates flow. Restriction of the flow is what creates pressure. The fuel system creates that restriction.
The one-way outlet valve doesn't have a closure spring so works on pressure differential. More pressure on one side will cause it to move in that direction, exactly the same as your heart valves.
The forces the spring has to overcome is dictated by the force pushing back on the other side of the valve, which is the back pressure from the rest of the fuel system. This makes the valve basically invisible to the pressure system as it is completely passive to fuel flow in the desired direction.
The point that the spring can't overcome that back-pressure and fails to open the valve dictates fuel pressure.
A master class mate , enjoyed every minute, love the channel
The vocabulary you are looking for to describe the action of the points mechanism is a "toggle action" where the lever has to be beyond a certain point to snap close, and the same in reverse to "Toggle" open the points again. Its the same action that you can hear when you use the indicators but this is elecronically activated, but the switching mechanism is the same.
Gotta say I love that setup in your van. Perfect layout. Definite van envy !
I bought a set of those jis bits a while back,came in very handy on a really original Yamaha dt175 I bought a while back,it’s that original that it still had its original engine case screws & as you probably know,they’re really soft,small tap with an impact driver & they were out & best of all,no damage to the screws,not an expensive purchase but a very useful one,enjoying the videos,great insight
Would you have a link for these please? I need some in my life!
@@DaveHairs Vessel JIS
Perfect explanation on how these pump works. good working practice going through the systems before diving in with the start button
Jim. love all your vids, keep 'em coming. Great info on the fuel pump, at least I now know why they stop pumping and don't keep building pressure! I'd be sorely tempted to throw on a pattern pump - especially after you poking the rubber valve flaps like that ;)
Very similar to the old points ignition systems fitted before electronic ignition was common I used to use wet and dry paper to clean, fold in half did both points at the same time
looks to be in great nick.
Hi jim,I agree with mister previous,not waffle,a better understanding of the individual parts..loving the content..just wish I had the confidence to work on my 1995 speed triple in the same way.
Thanks for the pump teardown and explanation. That's the next thing I need to check on my CBR600F3. Stumbles and dies on acceleration. However, I suspect what I might really need to do is clean out those transition fuel channels in my carbs which I've also learnt about on your channel. Such a pain to get them off and on again though. Didn't know about them earlier. I'll try the fuel pump and the side stand switch first then back to the carbs.......Thanks for your excellent channel.