I have a honda 4213 riding mower thatacts like the clutch is slipping it goes but takes a second to get moving

SOURCE: snapper rear engine riding mower clutch

It is time to replace the driven wheel. When you flip the mower up on the back end (after closing the vent on the top of the fuel cap), the driven wheel is the disc that has rubber on the outer edge that rides on the silvery disc that comes off the end of the motor. The last time I bought one was about 7 years ago, at which time it cost me about $7.85. I would expect it to be around $11-12 these days.

SOURCE: We mow 2 acres with a Greenfield ride-on.

Hi i have seen this with most greenfield models The only way to fix this problem is to replace the drive clutch assy as it ends up to costly to replace the worn parts : shaft,clutch plates & drive pulleys.
In most cases replacing these parts has led to a new assy six months later.
Mark.

SOURCE: Craftsman riding mower won't move.

yes it is a bad belt unless it is a hydro-stat(no clutch) you need to look under the mower and see if the belt is on correctly

SOURCE: Snapper Rear Engine Riding Mower

if they have been adjusting it for you this many times they have done it wrong and have ruined the clutch face plate material by letting it slip and sand off the facing material,now its down to the metal back plate and its now metal to metal,you need to have the clutch replaced soon or your going to ruin more drive components

SOURCE: snapper riding lawn mower loosses

if it is belt driven yes it sounds like its slipping may be worn or some idler pullys are adjustable via a slot in bracket where bolt goes through pully if it is disc driven the rubber disc is probably worn. if mower is a rear engine rider close vent on gas cap,set brake then lift mower from front and stand up on rear bars at bottom by floor you will see a rubber disc which is held on by 4 nuts. if has electric start try not to leave up for too long,should only take 15 min to replace hope this helps