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Page 19

HOW TO REPLACE THE BLADE (Continued)

NOTE:

 Saw teeth point toward the right of the saw when

held in normal operating position. The direction of rotation
is marked on the saw blade.  An arrow on the bottom of
the front base assembly also indicates direction of
rotation. 

See Figure 24.

16.

Tighten blade screw securely.

 

NOTE: 

Turn blade

screw clockwise to tighten.

17. Replace rear base assembly.  Position adjustment rod in

its proper place as shown in figure 25.

18. Secure rear base assembly in place with the two springs.

Hook one end of each spring in notch on each side of
base assembly. Using needle nose pliers, stretch each
spring and hook it over tabs on bearing plate.

19. Reassemble front base assembly.

20. Replace screws and tighten securely with a screwdriver.

21. Replace dust bag.

Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, dust, oil, grease, etc.

MAINTENANCE

When electric tools are used on fiberglass it has been
found that they are subject to accelerated wear and possible
premature failure, as the fiberglass chips and grindings are
highly abrasive to bearings, brushes, commutator, etc.
Consequently it is not recommended that this tool be used
for extended work on any fiberglass material. During any
use on fiberglass it is extremely important that the tool is
cleaned frequently by blowing with an air jet.

WARNING:

Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc. come in contact
with plastic parts. They contain chemicals that can
damage, weaken or destroy plastic.

OPTIONAL ACCESSORIES

The following recommended accessories are current and were available at the time this manual was printed:

Catalog No.

Description

Quantity

4600020

Size   0 Biscuits

100 Pcs.

4600021

Size 10 Biscuits

100 Pcs.

4600022

Size 20 Biscuits

100 Pcs.

4600023

Assortment Biscuits

Total 400 Pcs.

      Includes:

Size   0

100 Pcs.

Size 10

100 Pcs.

Size 20

200 Pcs.

TO TIGHTEN

TO REMOVE

BLADE

SCREW

BLADE

 OUTER BLADE

WASHER

INNER BLADE

WASHER

  GEAR

SPINDLE

WARNING:

Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.

Fig. 27

Summary of Contents for JM80

Page 1: ... Carefully read through this entire owner s manual before using your new plate joiner Pay close attention to the Rules for Safe Operation Warnings and Cautions If you use your plate joiner properly and only for what it is intended you will enjoy years of safe reliable service Thank you again for buying a Ryobi plate joiner SPECIFICATIONS No Load Speed 10 000 rpm Rating 120 volts 60 Hz AC 6 0 Amper...

Page 2: ...iner is a fast simple and accurate plunge cutting tool that can be used for this purpose It can be used to cut slots in hardwood softwood plywood particle board and other pressed woods Football shaped wafers called biscuits are then placed inside the slots with glue and used to help line up adjoining surfaces When a water based glue is used the biscuits swell in the joint making an extremely stron...

Page 3: ...Page 3 BUTT JOINTS MITER JOINTS T JOINT EDGE TO EDGE JOINTS TYPICAL APPLICATIONS PLATE JOINER JM80 ...

Page 4: ...bytwocomplete sets of electrical insulation This extra layer of insulation is intended to protect the user from electrical shock due to a break in the wiring insulation All exposed metal parts are isolated from the internal metal motor components with protecting insulation Double insulated tools do not need to be grounded IMPORTANT Servicing of a tool with double insulation requires extreme care a...

Page 5: ... CORD Never carry tool by cord or yank it to disconnect from receptacle Keep cord from heat oil and sharp edges 14 SECURE WORK Use clamps or a vise to hold work It s safer than using your hand and it frees both hands to operate tool 15 DON T OVERREACH Keep proper footing and balance at all times Do not use on a ladder or unstable support 16 MAINTAIN TOOLS WITH CARE Keep tools sharp at all times an...

Page 6: ...ade binds or joiner stalls 33 USE ONLY 4 INCH DIAMETER SPECIFIED BLADES Do not use blades with incorrect size holes Never use blade washers or bolts that are defective incorrect or not specified 34 AVOID CUTTING NAILS Inspect for and remove all nails from lumber before cutting 35 NEVER touch the blade or other moving parts during use 36 NEVER start a tool when the blade is in contact with the work...

Page 7: ...d it stationary against the workpiece It helps prevent skidding when making cuts It also prevents marring of the workpiece from your plate joiner when making cuts APPLICATIONS Use only for the purpose listed below 1 Cutting precise mating oval slots in hard wood soft wood plywood particleboard etc forsplinejoineryapplications Fig 1 WARNING Your plate joiner should never be connected to power suppl...

Page 8: ...plate joiner For most efficient pick up of wood particles empty dust bag often Before attempting to use any tool familiarize yourself with all operating features and safety requirements Fig 2 REAR HANDLE DUST BAG SWITCH TRIGGER REAR BASE ASSEMBLY HEIGHT ADJUSTMENT KNOBS 2 NON SKID BACKING PAD FRONT HANDLE ADJUSTABLE FENCE FRONT BASE ASSEMBLY ANGLE SETTING SCALE HEIGHT SETTING SCALE HEIGHT INDICATO...

Page 9: ...ent knob and making fine adjustments with the jam nut Turning jam nut forward will cut shallow biscuit slots Turning jam nut backwards will cut deeper biscuit slots The biscuit slot should be deep enough to allow slightly more than one half of the biscuit into the slot This extra room allows for proper alignment of the wood being joined TO MAKE FINE ADJUSTMENTS See Figure 4 1 Unplug your plate joi...

Page 10: ...n be set at angles ranging from 0 to 135 with quick accurate positive stops set in 45 increments A scale is located on both sides of the front handle for identifying these positive stop angles Each click you hear when rotating the adjustable fence from one angle setting to another equals a 45 positive stop angle change TO ADJUST ANGLE SETTING See Figure 6 1 Unplug your plate joiner 2 Loosenthetwoh...

Page 11: ...ed above each other Whenmakingedge to edgejointsfortabletops workbenches cutting boards etc the more biscuits you use the stronger the joint will be The following sections illustrate how to make various spline joints using your plate joiner EDGE TO EDGE JOINTS See Figures 7 and 8 Edge to edge joinery is one of the most basic and easiest joints to construct In general two basic adjustments have to ...

Page 12: ... the board and align the indicator marks on the fence with the centerline mark s on the board 11 Depresstheswitchtriggertoturnthepoweronyourplate joiner then push it forward to extend the blade into the wood 12 When the base assembly bottoms out against the depth of cut adjustment knob setting pull back releasing pressure on the spring Blade will retract from biscuit slot 13 Repeat this procedure ...

Page 13: ...lot at the marked centerline intersection 5 Next you must adjust the fence on your plate joiner in order to cut slots into the face of the vertical board TO ADJUST FENCE 6 Unplug your plate joiner 7 Loosen height adjusting knobs and set fence angle at 0 set fence height at desired dimension on the scale then retighten height adjustment knobs securely See Figure 14 Next select the correct depth of ...

Page 14: ...ct the correct depth of cut setting for the biscuit size you plan to use and clamp workpiece securely 5 Align indicator mark on fence with the centerline on the workpiece 6 Plug your plate joiner into power supply and prepare to cut slot 7 Depresstheswitchtriggertoturnthepoweronyourplate joiner then push it forward to extend the blade into the wood 8 When the base assembly bottoms out against the ...

Page 15: ...urnthepoweronyourplate joiner then push it forward to extend the blade into the wood 13 When the base assembly bottoms out against the depth of cut adjustment knob setting pull back releasing pressure on the spring Blade will retract from biscuit slot 14 Repeat this procedure for cutting mating slot and all required miter joint slots 15 Once all slots have been cut place a biscuit in each joint an...

Page 16: ... safety rules and do the job safely NEVER place your hands in jeopardy Make certain clamps can t loosen while in use Test difficult set ups on scrap Don t waste lumber Plan each operation before you begin Provide for smoother operation by cleaning your plate joiner frequently Shake plate joiner or blow with an air jet to remove wood particle build up Empty dust bag when half full DO NOT ABUSE POWE...

Page 17: ...es and resin from blade bearing plate and surrounding areas 9 Cleanwoodparticlesandresinfromslotsandsurrounding areas on front and rear base assemblies See Figure 23 Apply a thin coat of general purpose grease in slots or on bearing plate where base slides 10 Replace rear base assembly Position adjustment rod in its proper place as shown in figure 22 11 Secure rear base assembly in place with the ...

Page 18: ...rbide tipped cutting tooth against the screwdriver or pin and lock blade preventing it from rotating DO NOT lock blade against one of the cutting teeth Carbide tips will break 11 Using a 3 16 in wrench remove blade screw NOTE Turn blade screw counterclockwise to remove See Figure 27 12 Remove outer blade washer and blade 13 Clean wood particles and resin from blade washer dust bag area base assemb...

Page 19: ... fiberglass it has been found that they are subject to accelerated wear and possible premature failure as the fiberglass chips and grindings are highly abrasive to bearings brushes commutator etc Consequently it is not recommended that this tool be used for extended work on any fiberglass material During any use on fiberglass it is extremely important that the tool is cleaned frequently by blowing...

Page 20: ...wn into the dust bag Remove front and rear base assemblies and clean blade bearing plate base assembly slots and surrounding areas See CLEANING BASE ASSEMBLY DUST BAG TUNNEL section on page 17 3 Blade becomes difficult to push in when cutting slots Blade does not retract properly when cutting slots A Wood particles and resin have built up on base assembly slots and surrounding areas Remove front a...

Page 21: ...Page 21 NOTES ...

Page 22: ...sing any extension cord inspect it for loose or exposed wires and cut or worn insulation Ampere rating on tool faceplate 0 2 0 2 1 3 4 3 5 5 0 5 1 7 0 7 1 12 0 12 1 16 0 Cord Length Wire Size A W G 25 16 16 16 16 14 14 50 16 16 16 14 14 12 100 16 16 14 12 10 CAUTION Keep the extension cord clear of the working area Position the cord so that it will not get caught on lumber tools or other obstructi...

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