Your mower has a different model number than you posted. It will look like this: 917.388130
I will cite that model number as a reference.
The symptom your describing is usually related to carbration issues. I have seen the low oil level sensor cause the same problem. Only suspect the oil level sensor if you DO NOT have spark when the engine is hot.
This mower has a Briggs and stratton 126T02 series engine on it. I do not have the rest of the engine model number that would be on YOUR engine near the spark plug on the air shroud.
I am using this parts list as a reference only:
http://www.searspartsdirect.com/partsdirect/part-model/BRIGGS-STRATTON-Parts/All-Products-Parts/Model-126T020295B1/1245/1503500/P0906026/00003?blt=06&prst=&shdMod=
This is a typical carb.
http://c.searspartsdirect.com/lis_png/PLDM/P0906026-00003.png
The items that need to be removed for cleaning are in the boxes 975 and 117.
Additionally Fuel should flow from the float needle area (Item 134) at a rate that would fill up a spray paint can lid in around 10 seconds. If you do not have this kind of flow rate you need to inspect the fuel tank port and the float needle area for debris. Use carb cleaner in the bowl nut area to clean the main fuel jet orfice. Also make sure the carb is firmly secured to the engine block. If anything is loose it willnot draft fuel properly.
Once you get everything cleaned up it should work normally again.
Thanks for choosing FixYa,
Kelly
I need to add that if there is carbon deposits or poor seating of the valves in the valve seats this can also cause your mower can be very hard to start. Most of the time a simple hand lapping of the valves with valve grinding compound will correct this. Valve probems are disovered by doing a simple compression test. Pressure should be above 110 PSIG however 120 or above is preferred. If your compression is below 110 PSIG you will have to hand lap the vavle heads and seats with valve grinding compound (Coarse and fine). You rotate the valves agains the valve seats (Valve springs removed) until you note shiny surfaces for 360 degrees. .Just make sure to clean off any grindng compound from ALL surfaces as it can be very detrimental to the engine.
Kelly
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SOURCE: lawn mower runs well from cold but if stopped won't start
Sounds like it's running rich. If the mixture is slightly rich it will start well when cold, but when hot it floods. Check the air cleaner to be sure it's not clogged/blocked. Get a new plug for it and if this happens again just install the new plug - the new plug won't be fouled with fuel. If it started with the new plug then you're on your way to a carb adjustment (that is if the air filter/cleaner is clean)
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