The plus is I thought was the Tecumseh 49cc2h.p. engine ,some call it the Tecumseh 49er cause its been around awhile .It starts everytime and runs great but I guess there are better engines out there.I have been trying to find the price on this motor new but cant find one.The thing I dont like is I cant find a replacemet roller for it.I want a knurled one that grabs better.The one i have is smooth and slips unless I put alot of pressure onit.Monster scooter has a1.5 h.p. engine (item #ed1-220 that might be a good replacement when mine dies for 119.00 .Only problem is I think my clutch is smaller and it wont just pop right on.