Lapping The Cutting Unit - Toro Reelmaster 01005 Operator's Manual

5, 7, and 11-blade reel mower

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Operator's manual (21 pages)

Operator's manual (16 pages)

Table Of Contents

Table of Contents

1. Front face

The land area and relief angle of the reel blade are

pointed out in

Figure

16. The land area is the part of

the reel blade that actually comes in contact with the

bedknife and cuts the grass in a scissors action. The

relief or back grind angle is ground into the reel blade

to provide clearance or relief behind the contacting

edges to reduce drag or friction. The recommended

relief angle is 15 degrees.

1. Bed knife

2. Reel blade

Note:

After a reel has run for an extended period of

time the blade contact point or land area will keep

getting wider and eventually will be the full blade

width. This is normal and does not mean that the reel

has to be reground to stay effective. A cutting unit can

cut effectively with full width blades if the adjustment

is checked frequently to maintain sharp cutting edges.

Figure 15

2. Cutting face

Figure 16

3. 15 to 20 degree relief

angle

4. Land area established by

lapping

After the reel and bedknife have been ground, perform

the following adjustments:

Set the height of cut.

Adjust the bedknife to the reel.

Note:

As the reel blades continue to run against

the bedknife a slight burr will appear on the

front cutting edge surface the full length of the

bedknife. If a file is occasionally run across the

front edge to remove this burr, improved cutting

can be obtained.

If the reel blade edges and the bedknife edge

are slightly rounded and do not have severe

g026935

nicks, lapping only with a lapping compound

may restore the edges and match. Oftentimes

a cutting unit is deemed by users to need

grinding when the reel bearing adjustment,

bedknife adjustment and/or lapping is all that is

necessary.