I have a push lawn mower with a B&S engine 123K02-0185-E1. It is 13 years old but I maintain it very well. Starts right up when cold. And it runs fine. However I have an awful time starting it again when it's hot. Sometimes takes 5 or 10 minutes before I can restart it. Has new plug, new gas, new air filter and gas cap replaced also. Like I say...starts right up on first pull when cold. Thought it was the cracked fuel supply line but I replaced that and it did not make a difference. Haven't checked for spark when it is hot. How about the valves? Doesn't look like they are easily adjustable. Any ideas please? Thanks.
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