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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28115
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have a Briggs 21 Hp platinum engine. It runs perfectly for

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I have a Briggs 21 Hp platinum engine. It runs perfectly for a while but then acts like its running out of gas and cuts off.It cranks right back up and runs fine but soon does it again. Ive tried replacing all gas lines and fuel filter but didnt help. Any ideas

curtis b :

Welcome to JUST ANSWER small engines, let me try to help you !!

curtis b :

Single cylinder or twin cylinder?

curtis b :

Here is single cylinder carb. See picture # XXXXX in above link.

curtis b :

If the solenoid loses voltage or gets hot , it can lose grip and kill the fuel supply.

curtis b :

Best test is to get old style bowl bolt, and remove this solenoid and run test with it removed.

Customer:

Single

curtis b :

Did you scroll up and see my earlier response and link?

Customer:

I did see your response but not the pic. This has a fuel solenoid

curtis b :

Yes, the fuel solenoid may be the problem

curtis b :

http://outdoorpowerinfo.com/repairs/briggs_walbro_lmt_carb.asp

curtis b :

picture # XXXXX

Customer:

ok ill try it tomorrow. an i replace the solenoid with the screw or is this just for teting purposes?

curtis b :

You can replace it with the screw. Solenoid is there to keep engine from backfiring when the key is turned off. Nothing else.

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