Grizzly H7654, H7653 User guide

MODEL H7653/H7654

6" & 8" INDEXABLE INSERT

SPIRAL CUTTERHEADS

INSTRUCTIONS

These indexable insert spiral cutterheads are
designed to replace both straight knife and spiral
cutterheads from most Grizzly 6" and 8" jointers.

The total procedure of changing the cutterheads
and setting up the jointer takes approximately
one hour. The job consists of removing the old
cutterhead, installing and shimming the new spi­ral cutterhead, and readjusting the outfeed table
even with the knife edges at TDC (top dead cen­ter). Call Technical Support at [phone] if

you need additional help.

Inventory (Figure 1)

A.

Spiral Cutterhead ....................................... 1

Torx Drivers T20 1⁄4" .................................... 5

B.

T-Handle Socket Driver .............................. 1

C.

Hex Nuts 3⁄8"-24 .......................................... 2

D.

Flat Washers 10mm ................................... 2

E.

Lock Washers 10mm .................................. 2

F.

Bearing Block Studs 3⁄8"-24 x 4 .................. 2

G.

Flat Head Torx Screws T20 M6-1 x 15 .... 10

H.

Spare Cutterhead Inserts 14 x 14 x 2 ........ 5

I.

Recommended Tools

Wrench 8 x 14mm ............................................. 1

Precision Straightedge
Feeler Gauge Set
Pair of Heavy Leather Gloves

...................................... 1

.............................................. 1

........................... 1

Installation

1. DISCONNECT THE JOINTER FROM THE

POWER SOURCE!

Remove the jointer fence and cutterhead

2.

guard.

Remove the V-belts from the pulleys.

3.

4. Lower both beds to make enough room for

the cutterhead to come out, as shown in
Figure 2.

Note: When lowering, make sure that the

fence support does not come in contact with
the cutterhead pulley.

A

B

I

H

G

Figure 1. Model H7653/H7654 Inventory.

COPYRIGHT © FEBRUARY, 2006 BY GRIZZLY INDUSTRIAL, INC., REVISED MARCH, 2024 (BL)

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

(FOR MODELS MFD. SINCE 11/06) #JK7972 PRINTED IN TAIWA N

C

D

E

F

***Keep for Future Reference***

Figure 2. Jointer disassembly Steps 1– 4.

Remove the nut on the bearing block stud, as

5.

shown in Figure 3, and repeat on the other
side.

Figure 3. Removing nut on bearing block stud.

Wearing heavy leather gloves, carefully

6.

remove the cutterhead from the casting (see
Figure 4).

Note: Your cutterhead may have paper shims

stuck to the bearing block or the part of the
casting where the bearing block rests. If you
see these, carefully pull them off and set
them aside for later use, or keep them with
your cutterhead in the event that you reinstall
it later. Also, mark the side of the cutterhead
where they were used, so the future install
will go smoothly. Your new cutterhead may or
may not need these shims.

Bearing Block

Figure 5. Spiral cutterhead installed.

Tighten the spiral cutterhead in place, and

8.

ensure both pulley setscrews are tight.

9. Using the straightedge and feeler gauge set,

inspect the cutterhead parallelism with the
outfeed table as shown in Figure 6. With the
straightedge in position, raise or lower the
outfeed table until the cutterhead body (not
the carbide insert) just touches the straight­edge.

Move the straightedge to the other side to

10.

determine if one end of the cutterhead body
is higher/lower than the other. (Place the
feeler gauge between the cutterhead body
and the straightedge to determine the height
difference.)

—If the cutterhead is even or within 0.004"

with the outfeed table from one side to the
other, skip to Step 13.

—If the cutterhead is over 0.004" from one

side to the other, go to Step 11.

Bearing

Block Stud

Figure 4.

Install the included bearing block studs into

7.

the spiral cutterhead bearing blocks, and
install the cutterhead (Figure 5).

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Cutterhead removed.

Straightedge

Outfeed Table

Figure 6. Checking cutterhead parallelism.

Model H7653/H7654 (Mfd. Since 11/06)

Lift the spiral cutterhead slightly and place a

11.

shim beneath the bearing block.

Note: Use the shims from your old cutterhead

if available. If not available, newspaper is
approximately 0.003" thick and will work for
shimming (we don't recommend shimming
more than 0.004" on either side, as this may
affect how the bearing block seats in the cast­ing).

Repeat Steps 7–10 and adjust if necessary.

12.

Use the straightedge to adjust the outfeed

13.

table even with the edge of the cutterhead
knives at TDC (Figures 7 & 8). This is a rou­tine procedure that is covered in more detail
in the owner's manual that came with your
jointer.

15. Install the cutterhead guard back over the

cutterhead, making sure that the spring ten­sion in the guard is properly set so the guard
springs back over the cutterhead when it is
pulled back and released.

Re-adjust the infeed table.

16.

Insert Service

The H7653 6" cutterhead is equipped with 34
indexable carbide inserts; the H7654 8" cutterhead
has 40. Each insert can be rotated to reveal any
one of its four cutting edges. Therefore, if one
cutting edge becomes dull or damaged, simply

rotate it clockwise 90˚ to reveal a fresh cutting

edge (Figure 9).

Reinstall the fence.

14.

Top Dead

Center

Figure 7. Cutterhead at TDC (Top Dead Center).

Reference Dot

Figure 9.

In addition, each insert has a reference dot on
one corner. As the insert is rotated, the reference
dot location can be used as an indicator of which
edges are used and which are new. The insert
must be replaced when all four edges are dull.

Installing or adjusting a carbide cutter:

1. DISCONNECT THE JOINTER FROM THE

POWER SOURCE!

Rotating indexable carbide inserts.

Figure 8. Setting outfeed table height.

Model H7653/H7654 (Mfd. Since 11/06)

Remove any sawdust from the head of the

2.

carbide insert Torx screw.

Remove the Torx screw, rotate or replace

3.

the carbide insert, lubricate the Torx screw
threads with a light machine oil, and torque
the Torx screw to 48-50 inch/pounds.

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H7653/H7654 Parts Breakdown & List

Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here

are available for purchase. Call [phone] or visit our online parts store at www.grizzly.com to check for availability.

15

13

12

17

10

9

5

8

23

7

6

11

22

1

2

14

8

23

7

6

H7653 Parts

REF PART # DES CRIPTION REF PART # DES CRIPTION

1 PH7653001 SPIRAL CUTTERHEAD 6" 11 PH7653011 KEY 5 X 5 X 30
2 PH7653002 INDEXABLE INSERT 14 X 14 X 2 12 PH7653012 BALL BEARING 6203
2-1 PH7653002-1 SET OF 10 INDEXABLE INSERTS 13 PH7653013 BALL BEARING BLOCK
5 PH7653005 FLAT HD TORX SCR T20 M6-1 X 15 14 PH7653014 PULLEY
6 PH7653006 HEX NUT 3⁄8-24 15 PH7653015 SETSCREW 1⁄4-20 X 3⁄8
7 PH7653007 LOCK WASHER 10MM 17 PH7653017 T-HANDLE DRIVER 1/4"
8 PH7653008 BEARING BLOCK STUD 22 PH7653022 TORX BIT T20
9 PH7653009 BALL BEARING BLOCK 23 PH7653023 FLAT WASHER 10MM
10 PH7653010 BALL BEARING 6202

H7654 Parts

REF PART # DES CRIPTION REF PART # DESCRIP TION

1 PH7654001 SPIRAL CUTTERHEAD 8" 11 PH7654011 KEY 5 X 5 X 35
2 PH7654002 INDEXABLE INSERT 14 X 14 X 2 12 PH7654012 BALL BEARING 6205
2-1 PH7654002-1 SET OF 10 INDEXABLE INSERTS 13 PH7654013 BALL BEARING BLOCK
5 PH7654005 FLAT HD TORX SCR T20 M6-1 X 15 14 PH7654014 PULLEY
6 PH7654006 HEX NUT 3⁄8-24 15 PH7654015 SET SCREW 5⁄16-18 X 3⁄8
7 PH7654007 LOCK WASHER 10MM 17 PH7654017 T-HANDLE DRIVER 1/4"
8 PH7654008 BEARING BLOCK STUD 22 PH7654022 TORX BIT T20
9 PH7654009 BALL BEARING BLOCK 23 PH7654024 FLAT WASHER 10MM
10 PH7654010 BALL BEARING 6204

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Model H7653/H7654 (Mfd. Since 11/06)