20 Most Recent Briggs & Stratton Lawn-Boy Insight Series 21-Inch 190cc 650 Series Gas Powered Engine Variable Speed Self-Propelled Lawn Mower - Page 2 Questions & Answers

Your throttle cable likely needs adjusting. It should be fastened on the engine with a screw. Loosen that screw and adjust while engine is running then tighten Keep fingers away from underneath while engine is running.

Take the fuel bowl off and clean the bowl as well as the needle valve where the little jets are. That most likely is your problem. The bowl is held on with a small bolt looking thing and the little jets are also in that bolt. Those little jets must be clear.

probably a dirty carb. or if this problem is occuring when the engine has been run and is hot and its the new style easy start engine with auto choke ( no primer or choke lever) then the auto choke unit coud be faulty

the timing is fixed by way of woodruff key in the crank which locates into a chanel in the flywheel and is not adjustable. If you mean the air gap between the ignition unit and flywheel then set it to aprox .002-.005 inch

HMM .. if the grass is not going into the collector, I would look under the deck and see if there is something blocking the chute to the bag.

Please vote !!

Any good grade of SAE 30 will do fine unless on cold weather operation..then SAE 10-30 ..

Your valve lash is out of adjustment causing the exhaust Valve to stay closed longer then it should, keeping compression in the cylinder trying to exhaust while in the compression stroke..not a hard job but must be done...good luck

This is a hard one to diagnose without seeing it but it could be a sticking float or a stuck open valve. If you have good compression you can eliminate the valve issue. Be careful checking the float that the inlet needle doesn't fall out.

the dip stick twists out, and sometimes are tight, or hard to turn. be sure and replace it as tight as you can, back presure in the crankcase will blow it out if it's not tight

disconnect the spark plug turn the mower on its side and inspect the drive belt on the pulley above the blade (on the crankshaft) it may have a shroud over it. Also there is a small gear case that maybe dry that the belt drives, that goes to the wheels, Also try lifting the drive wheels up off the ground and engage them and see if it still does it. if it stops once lifted it might be the bushings on the axle its self.

Any auto parts stor will have pre made one available and many sizes to choose from

if has a two cycle engine check for carbon build up in exhaust port if its a briggs and stratton check compression it sounds like one of the valve seats has come loose if it is have to take in to fix about 80.00 dollars then it comes down to hoe old is it do you want to spend that kind of money and not by a new one you will have to think this over because you can bet some shop going to over charg you like i said 80.00 no more than 100.00

Hi - you can download manuals for all current and the vast majority of older engines direct from the Briggs website (owner/maintenance manuals and Illustrated Parts Lists) . You can also buy proper 'strip down and repair' manuals from Amazon among other places. Note - these are official publications and it's unlikely you will find them for free (they're illegal if you do!).

needs carb rebuilt on it

10 and 10 exh and int

your running out the gas in the carb out you need to rebiuld the carburator probably dirt in the carb from bad gas

HI There try adding oil a bit at a time. They will only need minimum amount to lubricate the engine. Firstly put in about a quarter of a litre and check the dip stick after 10 mins.

valves bad need valve job

trry a shot of starting fliud see if it wont start then make sure your getting a spark to

adjust govenor at carberator