20 Most Recent Briggs & Stratton Briggs Stratton Lawnmower Lawn Mower Short Block Questions & Answers

Question edited for clarity, Australian to American English Question moved to Briggs & Stratton. Check out the link and video https://www.google.com/search?q=Briggs+%26+Stratton+19.5+HP+tune+carburetor and also https://www.google.com/search?q=briggs+and+stratton+19.5+hp+carburetor+adjustment ....

Question edited for clarity. Question moved from MISC. Put the switch on the positive supply to the coil. Or find out what was faulty in the original set up?

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Try this site for the manual you need. https://www.manualslib.com/

Sounds like a fuel problem. Check the lines and filter.

See if you can find it on this chart https://www.jackssmallengines.com/Products/BRIGGS-STRATTON/Spark-Plug

time to pull the hose off the fuel pump coming from the tank and drain the tank and check flow of gas coming from tank hose, and possibly inline fuel filter is plugged or there is junk in your tank/line from tank not letting enough fuel to run to pump so pump can pump it to carb !

My first thought would be the screw that holds the carb bowl. It has a little orifice and 4 holes evenly spaced around the base of the screw and it is vital that all holes and orifices are completely free of gunk and trash or varnished gummed up stuff. That must be cleaned. I use B-12 Chemtool carb jet spray. I suggest using compressed air as well. An old guitar string (G,B,or E strings) works well but do not make sharp bends with the wire! It will snap off at the right time and poke your finger. This case calls for a little common knowledge Lol. And supposing the main jet has been sprayed and blown out. Main jet is the tube with many evenly spaced holes around it. Some are removable. I clean my carbs using a welders torch tip cleaner files. Never ever ever force a wire too large in these orifices and holes. Always use the nxt smaller size wire.

Parts Tree.com

try PartsTree.com

HD 30 WT.

2 cycle engine oil

SearsPartsDirect they may have one you can download if not try PartsTree.com

Check the spark plug is clean

Does the engine want to bog down when you move the throttle? Or does it do absolutely nothing? If it bogs down when you try the throttle, It could be: water in the gas bad or distorted diaphragm (if no float) stuck needle valve stuck float I’m happy to help further over the phone at https://www.6ya.com/expert/karl_14766549451f8563

After a very extensive cross reference session your engine is model number
10H902-0285-E1 (not provided by you so it took a while)

Your engine is covered in this repair manual:
http://www.mymowerparts.com/pdf/Briggs_&_Stratton_Service_and_Repair_Manuals_Spec_Charts/270962%20Single%20Cylinder%20L-Head%20BRIGGS%20&%20STRATTON.pdf

If there is a problem that your having I can help you if you would just elaborate. I could save you lots of time. The 2 most common failures of this engine is on the carburetor. The parts that fail are the diaphragm (Item 394) and the primer bulb (Item 976) of this link:
http://www.partstree.com/parts/?lc=briggs_and_stratton&mn=10H902-0285-E1&dn=57160004

Carb data is in section 3 of the first link.
Thanks for choosing FixYa,
Kelly.

you don't. if it spun on the shaft then you have to replace the cam.

.030 or 76 MM

ethanol additive in gasoline causes deterioration of fuel system parts, especially primer bulbs. Needs to be replaced...relatively easy for mechanically minded or bring to dealer. Check Amazon for parts...they are cheaper than most dealerships. Hope this helps....