Here is our small engine O-series vertical engine for 140cc, 160cc. (On Honda mowers, it might have "OHC," for overhead cam, instead but the difference is minimal.) It's simple to spot on Kohler engines like this one, but you might have to look a bit harder on models with other engines. The product line of Ducar covers horizontal shaft engine, vertical shaft engine. To find one, look for the letters "OHV" on the valve cover, as shown on the Toro 20370. "But presuming you're keeping up with the maintenance, it might give you another three or four years, if not more, before you have to replace your unit." "Having a premium engine doesn't mean you can neglect it," says Peter Sawchuk, Consumer Reports' mower program leader. Because overhead-valve engines have a more efficient design (cleaner for the environment), they use less gas and leave fewer carbon deposits, which can wear down any engine over time. Service Tip When purchasing oil for seasonal maintenance, most small engines (such as those on push mowers) have total capacities of less than one quart (32 oz.) and most medium size engines (such as. As it ages, however, models with overhead-valve engines are less likely to give you trouble. Therefore it is a good idea, whenever you are adding the oil to the engine, to slowly and checking the level frequently to prevent overfilling. Like it was said earlier, the bike had plenty of low end but no top end. I was hoping to see huge power differences between the two after spending twice the doe and was kind of dissapointed by the out of the box performance of the engine.
Up grading from a orion agb29 with a ducar 125. And, as we found in our latest mower tests, you can now find them on push mowers that cost as little as $200.Īny mower you buy, even with a side-valve engine, will start easily when you first gas it up. I just bought a piranha ods 140 with the same engine. Today, almost all snow blowers have overhead-valve engines. Of the two, overhead-valve engines traditionally cost more and not long ago could be found only on feature-heavy, self-propelled mowers at the high end of the price range. And the cost of these so-called premium engines has been trickling down to lower-priced mowers.Įngines for mowers (and snow blowers) have two basic designs: side-valve and overhead-valve. Of two common designs, one type runs cleaner and quieter and is easier to maintain. Will it be easier to start than the last one? Will it last longer? To determine a mower's long-term odds, take a close look at the engine. When you're shopping for a mower, a number of considerations may go through your mind.
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