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Small Engine ??
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FREEDGUY View Drop Down
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FREEDGUY Quote  Post ReplyReply Direct Link To This Post Topic: Small Engine ??
    Posted: 29 Nov 2021 at 5:26pm
I stopped int the "farm" this morning to pick up some of my tools in storage. Dad happened to be out in the yard while I was pulling out and flagged me down. We talked for awhile and he brought up the "BACK" of his over/vest. I did notice "blotches" on it but never gave it much thought. 
Long story short,he was vacuming leaves with a pull -type/self powered trailer system (CYCLONE ?) with a 5 hp Briggs. Apparently it blew a drain/oil level plug( this 5 hp has 2 at either end) and sprayed oil from the engine "plug" 4 feet forward of the engine all over the rear end of the Zero turn, operators backrest, and dads vest. Is there "positive" oil pressure in these engines to fling oil that far ??
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JW in MO View Drop Down
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Joined: 16 Feb 2010
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Points: 2663 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JW in MO Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2021 at 5:34pm
There is if the crankcase vent gets plugged.
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DaveKamp View Drop Down
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Joined: 12 Apr 2010
Location: LeClaire, Ia
Points: 6066 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 01 Dec 2021 at 9:07pm
Doesn't even need a plugged crankcase vent... the mere motion of the single piston constitutes a significant change in crankcase volume... if the plug is out, and the piston comes down, it'll blow oil out that filler, and spit it a LONG way...
Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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FREEDGUY View Drop Down
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FREEDGUY Quote  Post ReplyReply Direct Link To This Post Posted: 02 Dec 2021 at 7:31pm
Thanks DAVE, in hindsight, that makes sense. But what would make a "check/fill" plug bow out? This engine had 2, one in the front, one in the back. Dad never remove either of them. The drain plug is lower on the block and the filler port on top has a dip stick Embarrassed .
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8609 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 02 Dec 2021 at 10:55pm
It would only make sense that the plug wasn't properly tightened when last installed and over time worked loose enough to finally blow out. I bet it was showing signs of leaking before the failure....but you'd have to look.
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FREEDGUY View Drop Down
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Joined: 15 Apr 2017
Location: South West Mich
Points: 5396 		Post Options Post Options   Thanks (0) Thanks(0)   Quote FREEDGUY Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2021 at 7:37pm
Originally posted by SteveM C/IL SteveM C/IL wrote:

It would only make sense that the plug wasn't properly tightened when last installed and over time worked loose enough to finally blow out. I bet it was showing signs of leaking before the failure....but you'd have to look.
 Sadly, there are 2 different "fill level " plugs that dad has NEVER cracked WinkWink !!  the oil drain on this engine is a square metal plug, the "idiot" (I assume) yellow  plug  3/4's of an inch above that plug for oil level (that's what let loose) is redundant on this engine as the top-end  filler cap has a true dipstick on it ConfusedConfused ?? Dad has NEVER loosened the yellow caps (one in front, one in back) since he's owned this machine ClapClap
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Stan IL&TN View Drop Down
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Joined: 13 Sep 2009
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Points: 6730 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan IL&TN Quote  Post ReplyReply Direct Link To This Post Posted: 03 Dec 2021 at 8:00pm
I would want to look at that plastic plug. If it showed stripped threads, cracked in two or if it looked un damaged. If not damaged then I'm betting it just worked itself loose until it fell out. I have a pressure washer with that engine on it so I better check mine.
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