How does the lubrication system work in my lawn mower?

[StageLeft]

It has a separate tank for oil from the gasoline. Is it a standard wet oil pump or a dry sump or something? I really have no idea!

 

[amcdonald]

Giggity Giggity

 

[notfred]

Take it apart or find a manual for it and look.

 

[KEV1N]

You talk dirty to it for a little, then you strip.

 

[Shockwave]

I dont know about newer ones, but older ones were very basic. There was a dipper attached to the crank, as the crank came down it would splash into the oil, as the crank went up it would come out of the oil and splash more oil.
VERY simple. Dont know about newer ones though.

 

[NutBucket]

I think there is a pump of some sort. I mean, its a straight 4 cycle motor. They used to have side-valves to simplify things. Course, now days they're OHV and even OHC (for Honda). I wonder when the timing belt/chain needs to be checked

 

[MAME]

hahahha - lubrication

 

[Pepsi90919]

splash..

 

[shenaniganz]

Howstuffworks.com

 

[StageLeft]

Originally posted by: shenaniganz
Howstuffworks.com

I checked, but couldn't find specific to my mower. It is a 4 cycle briggs and straton 4.5 hP (I think). I bought it new last year.

Take it apart or find a manual for it and look.

I will when it dies, but until then I need a mower!

 

[Shockwave]

The make a 4 cycle 4.5 HP? Mine was a 2 stroke 5HP......

 

[OffTopic1]

All depends on your lawnmower.

What's the difference between a 2 stroke.

How Two-stroke Engines Work

 

[NutBucket]

Originally posted by: Shockwave
The make a 4 cycle 4.5 HP? Mine was a 2 stroke 5HP......

They're up to 4 stroke, 6.5hp at least.

 

[Viperoni]

Originally posted by: Shockwave
I dont know about newer ones, but older ones were very basic. There was a dipper attached to the crank, as the crank came down it would splash into the oil, as the crank went up it would come out of the oil and splash more oil.
VERY simple. Dont know about newer ones though.

 

[C'DaleRider]

I'd guess the engine, since it's a 4.5HP Briggs, is a Quantum Series engine........this engine series uses a gear-driven pressurized oil system to lube the internals....not as sophisticated as an automobile lubrication system, but much more than the splash-bath old style oil system of years ago.

All of Briggs engines used for mowers use this pressurized oil system.......the splash-bath is long forgotten.

 

[Eli]

Originally posted by: C'DaleRider
I'd guess the engine, since it's a 4.5HP Briggs, is a Quantum Series engine........this engine series uses a gear-driven pressurized oil system to lube the internals....not as sophisticated as an automobile lubrication system, but much more than the splash-bath old style oil system of years ago.

All of Briggs engines used for mowers use this pressurized oil system.......the splash-bath is long forgotten.

All lawnmower engines under let's say.. 12HP.. use splash lubrication. Only the bigger 2-cylinder mower engines are going to have any kind of full pressure lubrication system.

Your Quantum engine uses the gear-driven oil pump to merely spray oil all over inside the crankcase. Either that or it uses it to make sure the area the oil slinger resides in is always full of oil, called a constant level spash system. I can't remember which. Either way, its still splash.