MTD OEM-190-133 User manual

Brand: MTD

Model: OEM-190-133

Type: User manual

PRINTED IN U.S.A.

WARNING: Disconnect the spark plug wire and

move it away from the spark plug to prevent the

unit from accidentally starting. Protect hands by

using heavy gloves or a rag when grasping the cut-

ting blade.

Installing the Mulching Blade

1. Remove the existing blade and blade adapter from your

mower by removing the center bolt and cupped washer

which hold the blade and adapter to the engine crank-

shaft. Remove the blade and adapter from the crank-

shaft.

2. Slide the new blade adapter, Figure 1, onto the crank-

shaft.

3. Place the blade with the side marked “bottom” (or with

the part number) facing away from the adapter. Be cer-

tain the star pattern on the blade adapter is properly

matched with the star pattern on the blade.

4. Align the blade bell support over the blade with the tabs

in the holes of the blade and insert the center bolt.

Tighten the center bolt securely to between 450 and 600

inch pounds.

Installing the Mulching Baffle

1. Lift up and hold the side-discharge chute deflector, Fig-

ure 2.

2. Insert the bottom lip of the mulching baffle inside the

chute opening, Figure 2.

3. Snap the baffle hooks over the hinge pin of the chute

deflector, Figure 2. The hooks will snap into place on the

hinge pin, locking the mulching baffle firmly onto the

mower.

4. Release the chute deflector.

NOTE: For proper assembly, install bottom lip inside chute

opening before placing hooks over the hinge pin.

NOTE: When you want to side discharge grass clippings

instead of mulching, simply lift the chute deflector and

remove the mulching baffle. It is not necessary to remove the

mulching blade in order to side discharge clippings.

Using your Mulching Kit

Be sure that the lawn is clear of stones, sticks, wire, or other

objects which could damage the lawn mower or engine. Such

objects can be accidentally thrown by the mower in any direc-

tion and cause serious personal injury to the operator and

others.

WARNING: If you strike a foreign object, stop the

engine. Remove the wire from the spark plug,

thoroughly inspect the mower for damage, and

repair the damage before restarting and operating

the mower. Extensive vibration of the mower during operation

is an indication of damage. The unit should be promptly

inspected and repaired.

• For effective mulching, do not cut wet grass because it

tends to stick to the underside of the deck, preventing

proper mulching. For extremely heavy cutting (thick

grass), reduce the width of cut. The ground speed

should be adjusted to the condition of the lawn.

• For a healthy lawn, never cut more than one-third off the

total length of the grass at any one cutting. Lawn should

be cut in the fall as long as there is growth.

• For the most effective mulching and to provide the best

cut, operate the mower at full throttle.

• Be certain to clean the underside of the deck after each

use to avoid a build-up of grass which could prevent

proper mulching.

Star Blade

Adapter

Mulching

Blade

Center Bolt

Blade Bell

Support

Figure 1: Installing the mulching blade.

REF. NO. PART NO. DESCRIPTION

1 742-0742A 22-inch Mulching Blade

2 631-04045 Mulching Baffle

3 748-0376C Star Blade Adapter

4 736-0524B Blade Bell Support

5 710-1044 Center Bolt

Figure 2: Installing the mulching baffle.

Chute

Deflector

Mulching

Baffle

Lip of Mulching Baffle (install inside chute opening)

Hooks

Chute

Opening

Operator’s Guide

OEM-190-133 (22”)

22-inch Mulching Kit

FORM NO. 769-01173

Specifications subject to change without notice or obligation.

Model year 2003 or above

MTD LLC P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

MTD OEM-190-133 User manual

MTD OEM-190-133 User manual

MTD OEM-190-133 User manual

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