push mower


Old 04-19-07, 07:51 AM
Thread Starter
Join Date: Mar 2006
Posts: 17
push mower

I dutifully got my lawn mower out and did the minor maintenance this spring: replaced the spark plug, changed the oil, even bought a new air filter (spare no expense this year). I put on a freshly sharpened blade. And it starts on the first pull! After mowing for a while, I decide that I earned a well deserved break. So I go back to finish mowing, the mower still warm and the crazy thing wouldn't start. I primed it and pulled on it about 7 times before it started. Each time I want to mow, it will start cold on the first pull. When its warm, I have to pull and prime and maybe even curse a little.

Any ideas on why it won't restart when its warm and if there is anything I can do?

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Old 04-19-07, 08:17 AM
Join Date: Jan 2006
Location: Owen Sound Ontario Canada
Posts: 541
Low speed jet needs setting a bit I think
Post back with specifics of the push mower.
Make Model etc.
Old 04-19-07, 05:21 PM
30yearTech's Avatar
Join Date: Oct 2006
Location: Central Texas
Posts: 1,176
May have a leaking valve (usually exhaust) this can make for difficult warm restarts.
Old 04-20-07, 04:24 AM
Thread Starter
Join Date: Mar 2006
Posts: 17
type of mower

It is a Craftsmen Rotaryy lawn mower, 6.5 HP, 22" side discharge, Model # 917.387480
Old 04-21-07, 04:04 AM
puey61's Avatar
Join Date: Apr 2004
Location: Upstate New York
Posts: 3,224
A warm engine will require no priming and if you are priming on a warm restart you are likely flooding it and this would explain the numerous pulls to get it to fire up and I'll bet you see a great deal of black smoke from the muffler upon startup. Do not prime a warm engine!

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