Exmark Metro 21 manual Problem Possible Causes Corrective Action

Problem		Possible Causes		Corrective Action
Lawn mower or engine vibrates	1.	The blade is bent or is out of	1.	Balance the blade. If the blade
excessively		balance.		is bent, replace it.
	2.	The blade mounting nuts are	2.	Tighten the blade mounting
		loose.		nuts.
	3.	The underside of the lawn	3.	Clean under the lawn mower
		mower housing contains		housing.
		clippings and debris.
	4.	The engine mounting bolts are	4.	Tighten the engine mounting
		loose.		bolts.
Uneven cutting pattern	1.	All four wheels are not at the	1.	Place all four wheels at the
		same height.		same height.
	2.	The blade is dull.	2.	Sharpen and balance the
				blade.
	3.	You are mowing in the same	3.	Change the mowing pattern.
		pattern repeatedly.
	4.	The underside of the lawn	4.	Clean under the lawn mower
		mower housing contains		housing.
		clippings and debris.
Discharge chute plugs	1.	The throttle lever is not in the	1.	Move the throttle lever to the
		Fast position.		Fast position.
	2.	The cutting height is too low.	2.	Raise the cutting height.
	3.	You are mowing too fast.	3.	Slow down.
	4.	The grass is wet.	4.	Allow the grass to dry before
				mowing.
	5.	The underside of the lawn	5.	Clean under the lawn mower
		mower housing contains		housing.
		clippings and debris.
Lawn mower does not self-propel	1.	The self-propel drive cable is	1.	Adjust the self-propel drive
(Self-propel model only)		out of adjustment or is		cable. Replace the cable if
		damaged.		necessary.
	2.	There is debris under the belt	2.	Clean the debris from under
		cover.		the belt cover.

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