Senin, 02 Desember 2013

why does my lawn tractor engine bog down sometimes?

best lawn tractor on hills on Walker Mower, 48
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EpicRacer


i just put a new craftsman 17.5hp single cylinder engine in my tractor. when i push the throttle full, it lags a bit to get up to speed. when i engage the mower blades, the rpms drop slightly, not a lot, but there is a noticable difference. when i mow uphill, the rpms also drop a little more, and if i mow in 5th gear they drop further. it also bogs down when i hit a thick patch of grass, but it always moves fast enough to cut the grass cleanly.

what is the cause of this?
this just doesnt seem normal to me. it doesnt feel as powerful as my old 17hp engine. the old engine never bogged down unless i hit a really thick area of grass. it revved quickly and always maintained a steady rpm, give or take a couple hundred rpms.

is there a break-in period for small engines?
its a Briggs& Stratton with the craftsman label, part of the I/O series engine.
im hoping the engine just needs to be broken in. my old B&S could do anything- take a full 42" bite on damp (i dont mow WET grass) grass and barely bog down; i could do wheelies and lay some rubber down the driveway, it just had mega torque for its size, this one cant do those things.



Answer
You say you have a craftsman 17.5 hp single cylinder engine?..Funny, I have been in this business for 20 years and craftsman does not make engines...what I would need to know is...is it a Briggs and Statton?..or a Tecumseh?..
What you are describing sounds like a twin opposed engine and what it does going up and down hills.... which if that were the case...the oil slinger works in a different way..but, it is not warrantable if you have the twin opposed going up and down hills...not what they are made for...but, if you have the single cylinder engine I would have to ask..did you do this yourself?..Or did a shop do it?..We have to set the rpms right and I use a light that helps..though I can go by sound..most people that do it themselves invariably do it by sound...which is almost always wrong, since you don't work around this type of equipment day in and day out..that is why they have us...we go to school for it..every year..without fail.. Another thing..when you are cutting grass, you don't use the whole width of a mower to make a full cut...use a 3/4 cut so as not to bog down...and I would also have to ask this...are you mowing after it rains?..while the grass is still wet?...Big no no..though people never listen to us until they have blown their engine and want to blame us?...here is a good trick...before you mow...spray pam or another cooking spray underneath the mower housing, where the blades are...be surprised, won't have that build-up of grass on it when you are finished...I have tried to tell my customers to use a hose and they will tell me I do!..this is when something such as their bearings go out...we know better..Just so you know, craftsman does not make the engines...trust me..look at the blower housing, do you see the Briggs symbol or the Tecumseh symbol..there is only one other engine that you would have...doubt it is that one...though sears does have a few...but, on the zero turn radius...and it's an expenseive little baby....but, do watch the oil..make sure it is on the mark, and use only HD 30...if all else fails...go to Wal-mart, or sears, or look in your local phone book for a dealer of these engines near you..they will tell you the same thing that I have told you...

I have purchased property that will require at lease a compact tractor-any-body know about used Mitsubishi's




Twlight Zo


Rather than purchase a new unit I'm looking for a used one--I like the Kubota tractors--they appear to be of a comfortable size. These units are expensive and I am looking for a used unit of some type. Some say, stay away from those tractors that are hard to get parts for as-Mitsubishi, Ford etc yet these units are the most common in the used market under 2,500.00.
I can purchase a used (2yr. old),Husqvarna lawn tractor , 21hp w/48"cut for $900.00--is that appropriate-for 2.5 acres?



Answer
Yes the Husqvarna lawn tractor will be fine for just mowing 2.5 acres.
You may also consider your terrain and weather.
For example, if you have steep hills or creeks or rocks or sand or snow or ice.

You may find that some Husqvarna lawn tractors are built buy a common manufacturer.
I do not consider them a heavy duty daily use type of tractor.
What 21hp engine is it - the kawasaki or kohler?

If you can find a good Kubota and can afford it - do it,,,,,




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