This mower came in with a few issues. I disconnected the throttle cable, replaced the diaphragm, tuned it up and adjusted the idle (a couple of times) A tune up of course.
Good, simple and quick fix Bruce. I keep a couple of those diaphragm kits for those crabs on hand. It never fails one will come in when the parts store is closed and you need the parts to get an easy fix out of the way and get the customer back in business. That particular Briggs engine was one of their best and durable made. Have good one Inspector Gadget.
I had a mower like that in the early 2000's and had that problem over 3 times...I have another mower that's almost 7 years old and it still runs like new.. I use Seafoam in the gas and try not to buy any ethanol fuel ..I really believe the ethanol eats up the diaphragms
Our repair inventory is flip flopped. I always get way more riding mowers than push mowers. Good thing too....lol. As you well know....steering wheels over handles! I use cable clips or Velcro wire wraps to hold the safety handle. A little faster. Cheers my good Friend! Sean~
Bruce Pender yeah it's funny when I lived in the suburbs of Minneapolis it was all push mowers now that I live in the country it's mostly riders. Excellent job as always Bruce
I think the briggs pulsa prime is a great little engine and design. Simple & durable, especially if one uses non-ethanol fuel. So easy to work on. The only real problem is usually that carb diaphragm which is easy to diagnose, and quick & cheap to fix.
You know these are my favourite (Canadian spelling) lawn mowers. They last a long time and are easy to work on. The diaphragm is an issue but that is only a 30 minute fix for me.
I've had that hook bind before too! I scribe a line in the aluminum at the back edge andI always file a little of the carb's mating surface off along the back edge ,where the diaphragms always suck inward from (1) being the farthest span between screws and (2)folks tightening the air filter screw like it is a headbolt! Haha! My favorite carbs though. Sounds great!👍
Yes you are right but you know I have adapted and I just fix em. The Briggs ones don't clog off like the Honda's ( I don't mind Honda's either) but the Honda's don't like dust.
i put direct throttle to my briggs and stratton engines. get rid of the governor and only use wot on a thick patch of overgrowth or drop it to a low lumpy idle while trimming the lawn. I drilled out the baffle. I'll take it out for a walk and mow a few spots that are often left untouched for years
Sometimes when they are running without the filter installed they will suck gas out of the filter hold down screw hole, especially if the tank is full. The hole is open into the tank and the motor can get too much fuel. Just run the screw into the hole without the filter to be sure it doesn't. I wash and clean the filter first thing and it is nice and dry by the time I need it.
Yes the older ones were worse for that, The auto chokes actually had a hole right through to the bottom sucking pure air. Thanks for the great comment. You are right on these too.
I have an almost identical mower, given me by a neighbor. I was shocked I got it started by squirting carb cleaner down the carb throat,, then,, it would die., so,, I suspect a carb rebuild will be needed.
these engines are really good to idle low with a direct throttle control. get rid of the govenor spring and put a throttle cable directly to the butterfly valve. the low idle can stall the engine to shut off and it's fun to control the engine speed yourself
If anyone has this engine and it surges and wont run smooth and right, especially if a new gasket set has been put on , these plastic carburetors warp on the engine side mounting surface and either have to be replaced or you can sand that mounting side down as flat as possible and add SEAL ALL Sealant or a PERMATEX gas resistant sealant to the machined surfaces when putting a new gasket on and a tiny smear on the gaskets also. SEAL ALL sealant >>(resistant to gasoline, oil, paint thinner, and most solvents. Seal-All is also water resistant immediately upon application Sets in 2-3 minutes. Fully cures in 2-6 hours) The gaskets can be bought at most major car parts stores--eBay also for under $5
I'm going to have to gig you on one point for this repair Bruce. You didn't replace the O ring in the throttle bore.Because it is made of rubber and compresses and stiffens with time i consider it a consumable ( as Zippo Varga would say).
Easiest way on these now is buying the carb and gas container preassembled on eBay or Amazon for 30 bucks. takes off the old bad carb and tank and install the new one. Of course unless the extra 15.00 dollars won't break your bank of course. The only reason I said this is sometimes you get a bad diaphram like I did and by the time I bought the next ket I was already out 30 So for me lesson learned
Yes that is right if you are only doing 1 or 2 or on the other hand charging higher shop rate to pay for the parts. I would probably use 4 or 5 a month. If you are charging shop rate you can't afford fiddling around like I do, You have to get it done right away. I don't have a problem with shop rate but the whole idea of my channel is to fix things as inexpensively as possible. Sorry for the ramble haha
Nice repair, the lady will be pleased her lawnmower is working good again. Bruce, what do you use to clean the foam filters? Also, do you put a few drops of oil in them as well? Thanks for the video.
I use a small amount of gas. I can't say you should though. I don't put oil on them. I had a lawn mower last for 27 years with a foam filter. I have a dusty big yard too. By the way it was running when I sold it.
I miss the pulsa-prime classics even if they where under powered for anyone that didn't mow religiously. So simple, reliable, and easy to work on. For some reason even if you didn't oil the foam filter they seemed to oil it themselves through the crankcase breather ;) I still have a 20" Murray built in 1987 that's the reliable fall back when the ones I pick up for free finally give up their last. To bad it has a 100 thousand bent crank and the wheels aren't adjustable, no bagging or mulch, or I'd use it all the time. Those old classics could take abuse and last. Tecumseh and the B&S 600-700 series not so much. To often they never had their oil maintained and the rod sleeve wears and it's not worth replacing cranks and rods in them, just add a little oil thickener and use them till they blow.
Hey Bruce . Do some of these motors have a metal main jet inserted in the plastic under the screen? It's my first time working on a Briggs with a plastic carb. After I took it apart there was a little metal piece left over. It looks like it could be a jet with the small hole it has through the middle?
Thanks for replying. I put on my magnifying glasses and could see it was a main jet that goes under that screen that slides off. This Weed Eater mower run pretty good. Really simple and starts great. Thanks for your videos. I really enjoy them.
Nothing like a good ol Briggs, even with that nasty plastic carb....Looks like someone bent that throttle link while messing with the engine causing it to bind on the carb...
How long do those diaphragms usually last, I have a 4 year old 3.5HP B&S engined mower, and it's sometimes grumpy starting, air filter is clean, oil is new, gas is fresh, figure it's either the spark plug or the diaphragm needs replacing.... Once it's going it seems to be OK.....
There are OEM diaphragms and then there are aftermarket ones. I am sure the OEM ones last longer. I use both and there is a difference. If the mower is a beater (like a $40 mower) I will use an aftermarket. Then I have the B&S one for good tune ups. That is a confession sir.
My suggestion is to set up an ebay.ca account. Here is an example of one with free shipping Remember chinese though. www.ebay.ca/itm/5-Sets-Carburetor-Diaphragm-Gasket-Fit-For-Briggs-Stratton-495770-795083-5083H-/172332815229?hash=item281fd6137d:g:hkUAAOSwFe5Xz3B5
Hi Mr Pender i have a problem with my briggs 3.5 lawn mower classic i was mowing the yard yesterday and my mower dies carburetor works fuel is been good and full tank i take off the spark plug it was too black and i cleaned sparkplug runs normal i checked the oil level thats been ok its there a problem with headgasket ?
I've got a mower that die's about 2 seconds after it starts. I went thru the carb and it still did the same thing, so I bought a new carb and it still does the same thing. It has a new filter and fresh gas. Any body have any suggestions?
I have a Craftsman Briggsandstratton 6.5hp mower. Bought thru offer up and started before purchased leaking gas. Have cleaned carb did overhaul now having problems placing throttle plate back after placing choke return spring. There wasn't an idle mixture screw and don't know where it goes. Any suggestions? I'm not mechanically inclined and first time ever doing this. Thanks R. Rojas
You carb will be different than these. In the video attached go to the 26 minute spot and see the rod coming out from under the rewind housing. That is for the throttle on the carb. The choke will be later if there is one. That small flap is the throttle. Hope I helped th-cam.com/video/q0I7i81Xc3w/w-d-xo.html
Most of the folks I work for are single mom's and people who look after other high needs individuals. They just don't have money to do that. Thanks for the comment though. A new mower around here is 300 dollars or more. That is for a foreign one. (We are in Canada) These old Briggs are better than an import.
DEAR bure I woud like to thank you I lean a lot from you I open a shop repairing motor but I just have a hard time getting out dated can you help me john 77 yrs I need a second income
Good, simple and quick fix Bruce. I keep a couple of those diaphragm kits for those crabs on hand. It never fails one will come in when the parts store is closed and you need the parts to get an easy fix out of the way and get the customer back in business. That particular Briggs engine was one of their best and durable made. Have good one Inspector Gadget.
These are one of my favourites (Canadian spelling) They don't usually come with lots of dudads. (attachments and self propell etc.)
great job Bruce! those old school Briggs are so easy to work on.
They are actually kind of fun as they are predictable.
Old school. I love it. Enjoyed. Thanks Bruce.
You are so welcome. I enjoyed making the video
I had a mower like that in the early 2000's and had that problem over 3 times...I have another mower that's almost 7 years old and it still runs like new.. I use Seafoam in the gas and try not to buy any ethanol fuel ..I really believe the ethanol eats up the diaphragms
It does.
Our repair inventory is flip flopped. I always get way more riding mowers than push mowers. Good thing too....lol. As you well know....steering wheels over handles! I use cable clips or Velcro wire wraps to hold the safety handle. A little faster. Cheers my good Friend! Sean~
Well I am in the middle of a 100,000 people city so a few less ride on's here. There have been a lot of mowers that need extra care this year.
Bruce Pender yeah it's funny when I lived in the suburbs of Minneapolis it was all push mowers now that I live in the country it's mostly riders. Excellent job as always Bruce
I think the briggs pulsa prime is a great little engine and design. Simple & durable, especially if one uses non-ethanol fuel. So easy to work on. The only real problem is usually that carb diaphragm which is easy to diagnose, and quick & cheap to fix.
Yes I keep a half a dozen diaphragms around here as they seem to come in in bunches.
Your mowers king. Bruce.
Looks like one of them good old murrays , Great job
You know these are my favourite (Canadian spelling) lawn mowers. They last a long time and are easy to work on. The diaphragm is an issue but that is only a 30 minute fix for me.
Back in service, great job Bruce.
Thanks fud
Steve Rob sent me over. I'm hooked. Love your video's. Keep up the great work!!
Thanks Marshall!!!
I've had that hook bind before too! I scribe a line in the aluminum at the back edge andI always file a little of the carb's mating surface off along the back edge ,where the diaphragms always suck inward from (1) being the farthest span between screws and (2)folks tightening the air filter screw like it is a headbolt! Haha! My favorite carbs though. Sounds great!👍
Thanks Great advice. I will use it
Nice repair Mate!! As much as I love Briggs, I hate their Carburetors!! They haven't made a decent Carb since the 50's!!☺
Yes you are right but you know I have adapted and I just fix em. The Briggs ones don't clog off like the Honda's ( I don't mind Honda's either) but the Honda's don't like dust.
S
i put direct throttle to my briggs and stratton engines. get rid of the governor and only use wot on a thick patch of overgrowth or drop it to a low lumpy idle while trimming the lawn. I drilled out the baffle. I'll take it out for a walk and mow a few spots that are often left untouched for years
Well i like to keep the speed under 3400 RPM Thanks for the fun though.
Sometimes when they are running without the filter installed they will suck gas out of the filter hold down screw hole, especially if the tank is full. The hole is open into the tank and the motor can get too much fuel. Just run the screw into the hole without the filter to be sure it doesn't. I wash and clean the filter first thing and it is nice and dry by the time I need it.
Yes the older ones were worse for that, The auto chokes actually had a hole right through to the bottom sucking pure air. Thanks for the great comment. You are right on these too.
Very good job. You're carb work is excellent!
I should slow down a bit!!!
Seems to be a common Briggs condition. I bet the reg fuel still plays havoc on the diagram. Nice fix buddy.
Thanks Steve. I was a little rushed on this one.
Nice & easy...just the way we like them
Yes compared to some eh!!!
Doctor Bruce saves another patient ;-) Nice Job sir.
Well , Thanks to you too,
Thanks for all the great information Bruce. I did mean that as a compliment mate. I have learned lots from your videos.
Thanks Dave
Haha i have the same exact mower as you. I've had it for over 4 years, probably 5.
Mine is an older model too
Nothing wrong with old I am getting old too.
VERY DETAILED. THANK YOU.👍
Thanks for watching
i just did the same repair on a bolens mower 2 weeks ago,for 5 dollars,i keep 1 in inventory to save time on the next oe
Yes I get it I keep about 6 around here. Then I send in an order to Ebay.ca along with other consumables. (the .ca is Canadian)
i keep forgetting about the canada exchange rate
Yes one of your dollars costs us a $1.35 + shipping
You’re the man !! Thank you so much !!! God Bless You !
Thanks Antonio
Nice work Bruce.
Thanks George
...another Fine Job by the Bruceman !!!!
Thanks Jerry. I was rushed on this repair.
I have an almost identical mower, given me by a neighbor. I was shocked I got it started by squirting carb cleaner down the carb throat,, then,, it would die., so,, I suspect a carb rebuild will be needed.
Correct
Nice stand
Yes I love it
these engines are really good to idle low with a direct throttle control. get rid of the govenor spring and put a throttle cable directly to the butterfly valve. the low idle can stall the engine to shut off and it's fun to control the engine speed yourself
IT is. I have done that but mostly keep them stock for mowing.
If anyone has this engine and it surges and wont run smooth and right,
especially if a new gasket set has been put on , these plastic
carburetors warp on the engine side mounting surface and either have to
be replaced or you can sand that mounting side down as flat as possible
and add SEAL ALL Sealant or a PERMATEX gas resistant sealant to the
machined surfaces when putting a new gasket on and a tiny smear on the
gaskets also. SEAL ALL sealant >>(resistant to gasoline, oil,
paint thinner, and most solvents. Seal-All is also water resistant
immediately upon application
Sets in 2-3 minutes. Fully cures in 2-6 hours) The gaskets can be bought at most major car parts stores--eBay also for under $5
I will try it. Thanks
Nice quick fix Bruce!
It was a bit too quick. Thanks
great video as always
Thank you D
thanks bruce great video
Thanks Phil.
I'm going to have to gig you on one point for this repair Bruce. You didn't replace the O ring in the throttle bore.Because it is made of rubber and compresses and stiffens with time i consider it a consumable ( as Zippo Varga would say).
Guilty as charged George. I will do a video of that correction in the near future.
Easiest way on these now is buying the carb and gas container preassembled on eBay or Amazon for 30 bucks. takes off the old bad carb and tank and install the new one. Of course unless the extra 15.00 dollars won't break your bank of course. The only reason I said this is sometimes you get a bad diaphram like I did and by the time I bought the next ket I was already out 30 So for me lesson learned
Yes that is right if you are only doing 1 or 2 or on the other hand charging higher shop rate to pay for the parts. I would probably use 4 or 5 a month. If you are charging shop rate you can't afford fiddling around like I do, You have to get it done right away. I don't have a problem with shop rate but the whole idea of my channel is to fix things as inexpensively as possible. Sorry for the ramble haha
Nice repair, the lady will be pleased her lawnmower is working good again.
Bruce, what do you use to clean the foam filters? Also, do you put a few drops of oil in them as well?
Thanks for the video.
I use a small amount of gas. I can't say you should though. I don't put oil on them. I had a lawn mower last for 27 years with a foam filter. I have a dusty big yard too. By the way it was running when I sold it.
I miss the pulsa-prime classics even if they where under powered for anyone that didn't mow religiously. So simple, reliable, and easy to work on. For some reason even if you didn't oil the foam filter they seemed to oil it themselves through the crankcase breather ;) I still have a 20" Murray built in 1987 that's the reliable fall back when the ones I pick up for free finally give up their last.
To bad it has a 100 thousand bent crank and the wheels aren't adjustable, no bagging or mulch, or I'd use it all the time.
Those old classics could take abuse and last. Tecumseh and the B&S 600-700 series not so much. To often they never had their oil maintained and the rod sleeve wears and it's not worth replacing cranks and rods in them, just add a little oil thickener and use them till they blow.
Hey Bruce . Do some of these motors have a metal main jet inserted in the plastic under the screen? It's my first time working on a Briggs with a plastic carb. After I took it apart there was a little metal piece left over. It looks like it could be a jet with the small hole it has through the middle?
There is a little piece of brass in there. I thing looking down into the carb. That is where it is.
Thanks for replying. I put on my magnifying glasses and could see it was a main jet that goes under that screen that slides off. This Weed Eater mower run pretty good. Really simple and starts great. Thanks for your videos. I really enjoy them.
on this carburetor there is a main jet inside, why didn't you clean the main jet as well as replacing the gaskets?
I think I did. I do about 4 of these a week. They are really popular here. If i missed something---I am sorry.
Hi Bruce.What do you use to clean the foam air filters?
I have to confess I use gas, I shouldn't but it works. Be careful and use small amounts if you do.
Dish soap & warm water works well,let the foam dry out fully before refitting it ☺
Nice video. Followed your instructions and it still won't start now gas leaks at the primer bulb. Any suggestions?
Remember I get 40 emails a day Did you put a new primer bulb on it.
@@BrucesShop Hello. Yes I got it at Home Depot.
Can you use regular motor oil on the air filter? Or does it need to be specific with no additives?
I don't use any motor oil on my filters.. Some folks do. My Tecumseh lasted 27 years and I never put oil on the foam fllter.
Briggs manufacture this engine
for over 35 years or maybe more
I trust it.
and still broke down after a few years of mowing :D
GOOD MORNING AMERICA IN VIETNAM. MANY THANKS
Nothing like a good ol Briggs, even with that nasty plastic carb....Looks like someone bent that throttle link while messing with the engine causing it to bind on the carb...
Yes those throttle links are a weak link haha
What is the best way to clean a tank with crap in the bottom?
Sharp nuts and bolts shaken for a long time, and then a treatment of Evaporust.
How long do those diaphragms usually last, I have a 4 year old 3.5HP B&S engined mower, and it's sometimes grumpy starting, air filter is clean, oil is new, gas is fresh, figure it's either the spark plug or the diaphragm needs replacing.... Once it's going it seems to be OK.....
There are OEM diaphragms and then there are aftermarket ones. I am sure the OEM ones last longer. I use both and there is a difference. If the mower is a beater (like a $40 mower) I will use an aftermarket. Then I have the B&S one for good tune ups. That is a confession sir.
I need a source of aftermarket parts, I'm in Ontario. I find I can often get stuff like this at Crappy Tire, but they can be a little overpriced.....
My suggestion is to set up an ebay.ca account. Here is an example of one with free shipping Remember chinese though.
www.ebay.ca/itm/5-Sets-Carburetor-Diaphragm-Gasket-Fit-For-Briggs-Stratton-495770-795083-5083H-/172332815229?hash=item281fd6137d:g:hkUAAOSwFe5Xz3B5
I can see them shipping thing, by dropping it into a post box, but what about customs, and brokerage fees? I've been burned on that before.....
Well my advice is to order six and see how it goes. In Canada we just pay the price. The end cost should show up on Pay Pal and that i s what you pay.
If you use this guide to work on your carb be sure to take a picture of how the linkage is attached since he blows right by this step .
0:05
@@BrucesShop You over estimate your viewers ability . The physical act and verbal explanation of the linkage would have helped greatly .
Hi Mr Pender i have a problem with my briggs 3.5 lawn mower classic i was mowing the yard yesterday and my mower dies carburetor works fuel is been good and full tank i take off the spark plug it was too black and i cleaned sparkplug runs normal i checked the oil level thats been ok its there a problem with headgasket ?
I don't think so. If cleaning the plug worked just keep an eye on it
Bruce Pender and yes i forgot sometimes is blowing a black smoke :-/
I've got a mower that die's about 2 seconds after it starts. I went thru the carb and it still did the same thing, so I bought a new carb and it still does the same thing. It has a new filter and fresh gas. Any body have any suggestions?
I'm no pro but I'd say it has to be something around that carb area. Check "around" the carb and see if something isnt amiss.
If it has a bowl carb check the primer seal behind the air filter housing. Check the plastic air intake tube. It is tough as i am not there.
I have a Craftsman Briggsandstratton 6.5hp mower. Bought thru offer up and started before purchased leaking gas. Have cleaned carb did overhaul now having problems placing throttle plate back after placing choke return spring. There wasn't an idle mixture screw and don't know where it goes. Any suggestions? I'm not mechanically inclined and first time ever doing this. Thanks R. Rojas
You carb will be different than these. In the video attached go to the 26 minute spot and see the rod coming out from under the rewind housing. That is for the throttle on the carb. The choke will be later if there is one. That small flap is the throttle. Hope I helped
th-cam.com/video/q0I7i81Xc3w/w-d-xo.html
Bruce do you keep new parts in stock? I was just wondering cause you always have the new part when making a video
Yes Both new and used.
Great video Bruce! Where did you get that yellow lift? I need one for sure.
To save time this is the old link to the video on the link check comments too. Thanks
th-cam.com/video/yv7FtFWRHaU/w-d-xo.html
Bruce Pender thank you!!
It would have been helpful if we had seen you disconnecting and reconnecting the springs instead of your back!
Yes this is a 4 year old video. i am trying harder on that now.
Why would someone pay to have that thing fixed. Invest another 75 bucks and you could have a new mower or a nice used one
Most of the folks I work for are single mom's and people who look after other high needs individuals. They just don't have money to do that. Thanks for the comment though. A new mower around here is 300 dollars or more. That is for a foreign one. (We are in Canada) These old Briggs are better than an import.
Bruce Pender ahhh Canada. Gotcha!
Your video would be great if you showed us more than just your back.
I know I am working on that.
DEAR bure I woud like to thank you I lean a lot from you I open a shop repairing motor but I just have a hard time getting out dated can you help me john 77 yrs I need a second income
Stay with it and try hard. It does take time.
You need a better camera and stand out the way and get a camera stand
Well #1 This is a 4 year old video. #2 You really should try and make a few TH-cam videos. It is harder than one would think.