can anyone tell me the difference between a ohv and L head engine ( i have tried to search ) i am very frustrated and just want to order a maintenance kitthis is about an ariens with a tecumseh engine .
Do you mean, can we tell by looking at it? Maybe post some pictures of the engine in question? Was the blower offered with multiple engines?
In the automotive world an L head engine was a flathead with the valves in the block while an overhead valve engine has the valves in the head. OHV is the more modern design.
i have tried many searches the its a early 90s model ariens st824 with tecumseh hms80 horizonal crankshaft snow king engine ariens st824 - Google Search
Is there maybe a plate somewhere on the blower that has a longer model number that could narrow it down?
I have an old Ariens 7524 which is OHV. It has a steel valve cover with OHV embossed into the cover.. See attached Tecumseh Engine PDF.. Page 18 shows the cover.. Also the part number for the engine will start with OH or LH which will tell what you have as well.. If all else fail MasterMech will know.. Guy is a walking small engine encyclopedia Ray
If you have a valve cover that bumps up from the head you have an OHV engine. A flathead is usually fairly flat and has cooling fins across the whole head. Quick look should answer your question.
The HM80 L head motor has been around for a long time. It's a very torquey motor and quite durable. My blower (1980 vintage) has an HM 80 in it and it has moved lot of snow over the years and is still going strong. The nice thing about the older blowers is the weight. They are much heavier than the rew ones and have less tendency to lift and climb over the snow you are blowing. Here's link to pics of how an L head works Google-Ergebnis für http://www.spartanmechanics.net/images/Exhaust%20Stroke%20L-Head.JPG
Pick up a qt of 5w30 oil and a J19LM spark plug. That's about it for a "maintenance kit" on that engine.
not trying to sound sarcastic in any way, but OHV engines have been around longer than flat heads, almost all early engines were OHV style engines, when flat heads became the norm and the EPA started to put there clamps on small engine emissions, OHV engines came back to be able to comply, here's a pic of a 1921 briggs model F, i still own a few of the early briggs OHV engines........
yep, the only early briggs F sereies engine that didn't use a atmospheric intake, was the FI which had both an intake and exhaust valve controlled by push rod and rocker arm......
i ordered a splitter table at hd this morning ,they had ''maintenance kits'' for ariens snowblowers but there were no listings as to what plug was included ,that is what triggered my what kind of engine is this question ,the very basic instruction sheet says a j-8c plug,is the j19lm the same?i just blow snow i dont know what makes these things run ,i change the oil each season and thought having a spare plug would be wise ,thanks for the help
just want to say thanks to all you guys for your help and responses ,im no mechanic,im a simple woodworker
For all intents and purposes, the J8 and J19 plugs will interchange readily on these engines. If you can find the J8, run it, otherwise the J19 will work fine too. I was going to mention that some of these engines spec'd a J8C plug but figured, "nah, 90% of them run J19s, ......." We all see where that got me.
yep, the j19lm replaces the j8c/cj8 plugs, this was actually done if i remember right to help with emissions, the 19's are a heat range hotter than a j8/cj8, both will still work just fine, the 19's are less prone to fouling being slightly hotter......
These engines run something like a 4:1 compression ratio and prime with a bulb that dumps raw fuel into the intake tract. Emissions?? Prolly why they went extinct on us. I'm surprised too because they pretty much had the market cornered for for 2-3 decades on snowblowers.
6:1 was pretty much the norm for the L-head engines, any engine will dump raw fuel with either prime or choke or both, many of these tecumsehs/lausons had both a butterfly choke and a primer, i own an early lauson model TLH that was used on an early '50's snowblower, so they've been around for quite a while, also wanted to note, that there were a lot of the OH series tecumseh engines used on snowblowers as well, these had been in production long before the EPA/emissions came along, here's a pic of a lauson TLH, mine doesn't use the oil bath air cleaner, it is set up with a snow shield around the carb similar to what's seen on currant snowblower engines......
