SOURCE: 2 1/2 Briggs......doesn't run smoothly....surges at all speeds.
Hi, Check that you have the correct spark plug fitted or fit a new one as it sounds like your plug is getting hot then shorting out.
Sometimes the magnito can do this as well. but I would start with the plug.
SOURCE: BOLEN RIDING LAWN MOWER 13AN683G163 TRANSMATIC
Either the belt routing is incorrect or there is a tensioner which needs adjusting. Recheck your belt installation. Oh, it could be the wrong belt, too.
SOURCE: i need a repair manual for a scotts riding mower.drives a few fee
it could be the axel they have spider gears in them & the teath could be sheared or the the rearend is low on fluid
SOURCE: wont move forward or reverse-- transmission??
Does it have gears or a hydrostatic (automatic) transmission?
If it's a gear model, sounds like a loose drive belt.
If it's hydrostatic, it could be a belt problem or a problem inside the transmission. If it's a tranmission problem, this is not good. Many of the transmissions on riding lawn mowers are not serviceable - they are just replaced.
SOURCE: MTD riding mower does not move forward or reverse.
this is a belt driven transmission. from the engine driven pulley going aft towards the xmission differential there is another smaller variable speed pulley, there is a long belt between these two, from the variable speed pulley there is a larger xmission pulley that sits kitty-corner to it with a belt between these two. This larger "xmission pulley" is what drives the differential and depending upon which gear you have selected, makes it go forward or reverse. Check that both belts between pulleys are on, check that pulley's hardware is completely secured (nuts tightened down) The heads of these pulley's are splined to align to the shaft(s) and if they aren't tight, they will just spin and not engage the transmission. If your battery is under the seat, remove it and you should be able to see and access the aft pulleys. If both belts are on and engaging the pulley's and the shaft is turning on the transmission pulley than you have transmission differential failure. Bet it's the belt off or pulley head loose. Good luck, hope this helps
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