HOW TO TUNE UP Craftsman Lawn Tractor 12 HP Briggs & Stratton Engine




What do you think about this video?

GUNMASTER: is there any part of the motor that dont can be washed? the electric or something at the motor?? the spark or anything else?

Curtis Smith: Just wondering if you still have this mower, if so would you share some pictures or video of the mower deck I am having adjustment problems with mine. The front seems to sag more than I believe it should. 38" 12hp model number 917.254520 (ayp) craftsman 2 thanks in advance. 

Stephen Festus: I highly recommend on the flat head Briggs lawn tractor engines to install a fuel line shut off. The fuel float valve in the carb tends to stick open, and will cause fuel to leak into the crank case through the oil breather which can ruin the engine. Also I use the fuel shut off to let the engine run dry before storage which helps to reduce the problem of E 85 ethanol fuel sitting in the carb. Good videos Donyboy73. Keep up the good work.

bobby59696: how to change the drive belt on a mower like this one

john beardsley: hey,just did your tuneup on my 21 year old 12 1/2 hp briggs and it has never run so well. thank you, john

Dru Brandon: I'm twelve and I need my mower fixed it shuts of when you ingadge the deck

kierankay100: A clean engine is a happy engine :) nice job

Dru Brandon: It's an old craftsmen horse 44" deck

donyboy73: i think the ones in the video come from blackmambagloves do c

sleepybird09: I like the red trim on that seat.

Westley Bates: its making a knocking sound....not good ...derp

emmielie: Tank you for this great Howto

Xxdirt2snowxX: what year? I have the same one I just need the year

TOXIKFILMS: hm... my lawn mower has a 15hp briggs & stratton engine but it looks just about the same

SvenStadt: On these models, the muffler is blocked by the hood that comes down (the grey part on top). My Craftsman used to overheat then start smoking when cutting the grass. My dad had to take a blow torch and cut a hole into the hood (which removes it is held in place by two bolts to the chasis) right in front of where the muffler is. if you dont the heat will back up into the muffler which is the hottest part of the engine! Bad design probably.

William Jones: how would you take off the motor of old craftsman

J Moore: WELL DONE AND THOROUGH! I got a couple old ones - 11 hp and 12 hp 20 and 10$ may even get em runniig but no deck as of yet- had to move statrter up so it would engage thanks for the thoughtfull video - well done!

donyboy73: a carb kit from briggs for your specific carb, you may want to try and just clean the carb first

donyboy73: might be, not sure

Texassince1836: yes, but thats a little thick. i have run 50 weight in a briggs opposed twin that had well over 1500 hours then set up for 9 years. it got 15w30 at the next oilchange.

donyboy73: no

Norfolk Southern Lehigh Valley Railfan: What up awesome video you have a healthy tractor there I have a 2004 YTH21HP Husqvarna runs great I did the oil change 5 or 4 mounts ago and it runs great but for some reason none of my sockets of my dad's fits the spark plug it goes on it and stops cause it's not long enough to fit on it 100% do you any trick how to do that job cause the spark plug been in my lawn tractor since my dad bought it and I do the most maintenance on the tractor well anyway oil man out thanks

donyboy73: @Denkha94 i have never used it in small engines

donyboy73: it's probably to buy a carb kit, the needle valve and seat often need to be replaced. your carb will probably need to be thoroughly cleaned too

jeremy lee: here in the states its cheaper than that kind of oil you used in this tractor

domantor11: Its it very loud like very for an engine

donyboy73: it shouldn't hurt it

donyboy73: would be a good idea as there might be a bit of water in it

joey13722: Good jod

Denkha94: @donyboy73 Hi their, do you think if I add a little bit, it will harm it or won't circulate properly? Thank you.

Tim Tereshchuk: turn on captions.... roflmao

donyboy73: nothing wrong with briggs oil, just costs more money

donyboy73: no oil filter

Brian Davies: A tune up involves setting the governor, how about showing how that's done?

Anthony Browning: Should one oik treat the prefilter? Or is that for the mowers without paper filter elements?

Tristan102100: i have a couple flathead engines that occasionally get jammed up and don't want to start. could this be the problem?they are briggs 12.5HP and Kholer 18 HP

donyboy73: @ct9908 just leans to the front and stays there

5153john: hey man you should have sharpen the blades

donyboy73: could be the intake valve or u need to replace the needle and seat in the carb, also make sure the carb isn't set too rich

tim tomlinson: Have u hade any problems with the steering gear ?

CraftinmineralMc: Dony I have a question I have a 1986 Lt11 the motor runs great but the transaxle make a terrible noise when ever you start moving, the transaxle still works fine but even when I have it in neutral and I let off the clutch the noise is made. If you have any idea what this might be, any help is appreciated, thanks.

stigner123: I have the same tractor that I need to do some work to the transaxle as reverse stopped working. Will repairing the transaxle be a job a beginner mechanic can do or am I better off finding a used one somewhere and do the swap?

Tristan102100: and before i out the drain plug back on,i usually give it a couple splaches with new oil to help "rince" the oil pan out.

donyboy73: yes, quaker state, castrol

donyboy73: good tip! thanks

donyboy73: thanks for watching

The Headless Horseman: is there no oil filter on the BS 12 HP engine?

brent underwood: i bought sae-30 non-detergent for my 12hp briggs will that be ok? i didnt know what oil to buy exactly

donyboy73: early 90' I think

james smith: hey what is the advantages over ohv to flat head and flat head to ohv

DYAC: My friend's business did extremely well with adwords. He basically pay google to put his promotion ads on varies websites and the conversion rate is really high. I guess it helps since he sells gag/prank gifts and his ads get display on funny autocorrect websites. He wouldn't tell me the exact amount, but I'm estimating it is near the mid 6-figure salary. No risk no rewards I guess.
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HOW TO TUNE UP Craftsman Lawn Tractor 12 HP Briggs & Stratton Engine 4.8 out of 5

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