MTD OEM-190-841 Operator'S Manual Download Page 3

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Secure the narrow end of the baffle with the 1.75” 
hex cap screw and lock nut. Insert the screw from 
the bottom of the deck.

Secure the discharge end of the baffle with the two 
2.75” hex cap screws and lock nuts. Align the baffle 

holes with the chute deflector holes and insert the 
two screws from the bottom.      

Carefully remount the cutting deck to the tractor 
once installation is complete.

Figure 2

SECTION 2:  OPERATION

This mulch kit incorporates special blades in a process 
of recirculating grass clippings repeatedly beneath the 
cutting deck. After which, the ultra-fine clippings are 
forced back into the lawn where they act as a natural 
fertilizer. Regard the following recommendations for the 
best results when mulching. 

Clear the lawn of all debris prior to mowing. 
Running over stick, rocks, children’s toys, etc. can 
damage the mulching blades and make them less 
effective. Such objects can also be thrown by the 
mower and cause serious personal injury or 
damage to surrounding property, even with the 
mulch plug in place.

Never attempt to mulch if the lawn is damp. Wet 
grass tends to stick to the underside of the cutting 
deck preventing proper mulching of the clippings.

Do NOT attempt to mulch more than 1/3 the total 
height of the grass or approximately 1-1/2 inches. 

Doing so will cause the clippings to clump up 
beneath the deck and not be mulched effectively.

WARNING: Do NOT under any
circumstances attempt to mow through
grass which exceeds ten inches in height.
Debris may build up on the mowing deck
and come into contact with belts and
other moving parts or the engine’s
exhaust system presenting a potential fire
hazard.

Maintain a slow ground speed to allow the grass 
clippings more time to effectively be mulched.

To allow the blades to mulch properly, ALWAYS 
keep the engine at full throttle.

Deflector
Chute

 

Lock Nuts

2.75” Hex Cap Screws

Mulching Baffle

1.75” Hex Cap Screw

Mulching Baffle

Lock Nuts

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