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Gravely PM320 Owner/Operator And Parts Manual Download Page 16

16

SHORT TERM

IMPORTANT: 

NEVER spray unit with high-pressure water 

or store unit outdoors.

Inspect unit for visible signs of wear, breakage or damage.

Keep all nuts, bolts and screws properly tightened and know 
unit is in safe working condition.

Store unit in a cool, dry protected area.

LONG TERM

Clean unit thoroughly with mild soap and low pressure water 
and lubricate (see Maintenance). Touch up all scratched 
painted surfaces.

Remove weight from wheels by putting blocks under frame 
or axle.

When storing unit for extended periods of time, remove all 
fuel from tank and carburetor (run dry). Refer to engine 
manual.

Clean and charge the battery. Charge battery every three to 
four weeks when storing unit.

STORAGE

WARNING: 

AVOID INJURY. Read and understand 

the entire Safety Section before attempting any 
maintenance.

TROUBLESHOOTING

PROBLEM

PROBABLE CAUSE

CORRECTION 

Mower won’t 
engage

1. Attachment blocked.

2. Bad PTO switch.

1. Stop unit, remove key and clear 

attachment.

2. Replace switch (see Dealer).

Abnormal 
vibrations or 
sounds

1. Loose hardware.

2. Debris in mower deck.

3. Mower blades damaged.

4. Mower belt damaged or off pulleys.

1. Check and tighten all hardware.

2. Clear debris before starting unit.

3. Replace mower blades.

4. Install or replace belt.

ACCESSORIES

See your authorized Gravely Dealer to add these optional 
accessories.

Part No.

Description

79206500

Mulching Kit - 60" Mower

79206800

60" Mower Discharge Cover Kit

79206700

Lawn Striper Kit

SERVICE PARTS

Part No.

Description

07200328

PTO Belt (60")

07200038

Mower Deck Belt (60")

09081200

Blade 60"

08866900

Mulching Blade 60"

SPECIFICATIONS

Model Number

890018

Description Name

60" deck

Length

50" (127 cm)

Width (w/ discharge chute)

73" (185 cm)

Weight - Deck

300 lbs.

(136 Kg)

Tires - in. (cm)

9 x 3.5 (22.9 x 8.9)

Summary of Contents for PM320

Page 1: ...Owner Operator and Parts Manual Model 890018 PM320 60 Promaster 320 Mower Deck 02024000C 1 10 Printed in USA ...

Page 2: ... does not register your product please fill out sign and return the product registration card to Gravely or go to www gravely com on the internet UNAUTHORIZED REPLACEMENT PARTS Use only Gravely replacement parts The replacement of any part on this equipment with anything other than a Gravely authorized replacement part may adversely affect the performance durability and safety of this unit and may...

Page 3: ...essages Be alert to unsafe conditions and the possibility of minor moderate or serious injury or death Learn applicable rules and laws in your area including those that may restrict the age of the operator REQUIRED OPERATOR TRAINING Original purchaser of this unit was instructed by the seller on safe and proper operation If unit is to be used by someone other than original purchaser loaned rented ...

Page 4: ... all safety practices in Owner Operator Manual before beginning assembly Failure to follow instructions could result in personal injury and or damage to unit ALWAYS remove key and or wire from spark plug before assembly Unintentional engine start up can cause death or serious injury Complete a walk around inspection of unit and work area to understand Work area Your unit All safety decals Determin...

Page 5: ...ause all blades to rotate NEVER place your hands or any part of your body or clothing inside or near any moving part while unit is running ALWAYS keep hands and feet away from all rotating parts during operation Rotating parts can cut off body parts ALWAYS keep body and hands away from pin holes or nozzles which eject hydraulic fluid under pressure DO NOT touch parts which are hot Allow parts to c...

Page 6: ...re from rods or linkages that could be damaged DO NOT transport machine while engine is running ALWAYS turn off power to attachment and shut off fuel when transporting unit Keep unit free of debris Clean up oil or fuel spills This product is equipped with an internal combustion type engine DO NOT use unit on or near any unimproved forest covered or brush covered land unless exhaust system is equip...

Page 7: ...inder from shipping position on front of Promaster 320 Save the 1 2 x 4 bolt 1 2 washer spacer and 1 2 nut for reinstallation See Figure 7 3 Attach the carrier frame to the unit with 5 8 mounting hardware figure 3 NOTE Removing drive wheels from Promaster 320 will make installation easier To Install the Deck 1 Install the PTO belt on idler pulleys and blade spindle pulleys See Figure 4 2 Position ...

Page 8: ...inder to the carrier frame with 1 2 x 4 bolt 1 2 washer spacer and 1 2 nut removed in step 2 above figure 7 Attach the front of the lift cylinder to the cylinder mount with a 5 8 x 2 1 4 bolt 5 8 lock washer and 5 8 center lock nut from the hardware bag shipped with the deck 7 Adjust the hydraulic hoses on the lift cylinder so they will not contact the deck cover and then tie them together as show...

Page 9: ...1 Throttle Lever 1 Deck Lift Lever 2 Cut Height Lever 3 PTO Switch 4 Anti Scalp Roller 5 Discharge Chute 6 Cylinder Stops 7 Height of Cut Indicator CONTROLS AND FEATURES Figure 9 OF3413 2 1 3 7 6 5 1 4 4 ...

Page 10: ...r frame The stops are supplied in two 2 sizes The thinner stops change the cutting height by 1 4 64 cm The thicker stops change the cutting height by 1 2 1 27 cm 1 Remove cylinder stops from post and snap onto the lift cylinder rod 2 Push deck height lever forward until cylinder rests against cylinder stops TO STOP IN AN EMERGENCY Turn ignition key to OFF PRE START Refer to tractor s owner manual ...

Page 11: ...rease wheel bearings and castor pivots before each use figure 10 Apply Ariens Hi Temp Grease or equivalent to the lube fittings Order P N 00036700 ten pack of 14 oz cartridges When using Ariens Grease for the first time all components should be thoroughly cleaned prior to lubricating CHECK MOWER BLADES Check mower blades for wear every 25 hours of operation Ensure blade hardware is tightened to 11...

Page 12: ...range should be 13 13 25 in 33 33 6 cm Measure the spring length with the deck set at 2 in height for mowing at a 1 3 in cutting height Measure the spring length with the deck set at 4 in height for mowing at a 3 5 in cutting height 5 Adjust the idler spring length as needed see figure 12 6 Install left hand belt cover on mower deck SERVICE AND ADJUSTMENTS WARNING AVOID INJURY Read and understand ...

Page 13: ...lts lock washer flat washers and blades from the spindle shafts Replace 1 Put the blades flat washers lock washers and the bolts back on the spindle shafts 2 Tighten the bolts to a torque of 115 160 lbf ft 156 217 N m 3 Replace ignition wire on spark plugs Sharpen the Mower Blades 1 Remove mower blade from unit Discard mower blade if More than 1 2 in 1 27 cm of metal is removed Air lifts become er...

Page 14: ...cross the width of the deck 5 Measure the distance between the ground and cutting edge of the blade on the left blade Left position in figure 16 and on the right blade Right position in figure 16 Distances should be within 3 16 in 4 7 mm If they are not raise the low side of the deck using the height adjusters on the deck lift brackets see figure 17 6 After deck is level side to side check the dec...

Page 15: ...bracket bolt about a quarter turn to reduce clamp load on the height adjusters Loosen the jam nut on the deck adjuster bolt and then turn the bolt clockwise to raise the deck or counterclockwise to lower the deck Tighten both jam nuts Figure 16 Blade Side to Side Level Blade Front to Back Pitch Left Right Front Rear Rear Figure 17 Height Adjusters ...

Page 16: ...Section before attempting any maintenance TROUBLESHOOTING PROBLEM PROBABLE CAUSE CORRECTION Mower won t engage 1 Attachment blocked 2 Bad PTO switch 1 Stop unit remove key and clear attachment 2 Replace switch see Dealer Abnormal vibrations or sounds 1 Loose hardware 2 Debris in mower deck 3 Mower blades damaged 4 Mower belt damaged or off pulleys 1 Check and tighten all hardware 2 Clear debris be...

Page 17: ...sembly Serial No 001000 and up TABLE OF CONTENTS Decals Decals 18 Mower Decks Deck Lift 19 Mower Deck Cover and Caster Wheels 20 Mounting Arms and Belt Guards 22 Deck Discharge Chute Anti Scalp Rollers Belt Covers 24 Belts Spindles Idlers and Mower Blades 26 ...

Page 18: ...1 Decal 60 8 03992400 1 Decal Limited Lifetime Warranty WARNING AVERTISSEMENT ADVERTENCIA Do not operate mower unless guards are in operating position or bagger is attached Ne jamais utiliser la tondeuse sans protecteur sur le canal d ejection ou sans le bac monte No operar segadora a menos quelasdefensas esten en posicion de operacion o el recogedor este fijo 07742300B DANGER PELIGRO 07731400D DA...

Page 19: ...18400 4 Bushing Flange Nylon 762 x 1 0 x 580 x 1 48 9 06413400 2 Washer Hardened Steel 758 x 1 23 x 031 10 05714600 2 Ring Retaining External 689 x 077 11 00481500 1 Weldment Rear Lift Arm Right Hand 12 04063000 2 Rod Lift Assist 16 35 13 05800700 8 Pin Roll 250 x 1 25 14 06436100 4 Washer Flat Steel 630 x 1 005 x 062 15 02950253 1 Weldment Mower Frame 50 60 16 05968700 5 Bolt Hex 62 11 x 1 50 Gra...

Page 20: ...20 MOWER DECK COVER AND CASTER WHEELS PF3780 3 5 7 7 6 8 9 13 12 10 11 1 2 4 15 14 16 17 19 18 ...

Page 21: ...5 x 03 7 05520100 4 Bushing Flange 1 020 x 1 385 x 75 x 1 75 Nylon 8 07012600 2 Fitting Lube 25 28 x 256 9 09058200 2 Weldment Caster Fork 10 05964100 2 Bolt Hex 50 13 x 5 50 Grade 5 11 07100040 2 Wheel Assembly 9 00 x 3 50 12 05400008 2 Bearing 532 x 750 x 4 06 13 06543600 2 Nut Locking Top Flange 50 13 14 04912853 2 Cover Mower Tube 15 07412000 2 Screw Tapping 25 20 x 50 Hex Washer Head 16 07512...

Page 22: ...22 MOUNTING ARMS AND BELT GUARDS 9 11 6 15 15 13 12 15 15 16 17 12 12 13 15 15 12 15 12 15 12 15 15 13 15 13 12 15 15 7 20 19 18 15 21 20 19 18 14 5 3 1 5 5 10 9 8 8 10 2 4 22 ...

Page 23: ...x 875 x 5 50 Grade 5 9 06444700 2 Washer Flat Steel 875 x 1 500 x 1196 10 06539700 2 Nut Locking Center 875 9 11 09238900 2 Weldment Mower Mounting Pin 12 05900022 8 Bolt Hex M12 1 75 x 50 Grade 5 13 09284700 4 Chain Link 14 07539500 1 Cap Vinyl 50 ID x 1 50LG x 055 15 06500003 16 Nut Spin Lock Flange M12 1 75 16 07533600 4 Bumper Rubber 17 07000027 4 Nut Coupling 31 18 x 3 00 18 00442800 4 Bracke...

Page 24: ...24 DECK DISCHARGE CHUTE ANTI SCALP ROLLERS BELT COVERS 1 3 2 2 7 5 4 7 6 4 8 9 10 20 8 9 16 11 12 15 22 24 19 19 27 25 18 19 17 23 26 14 13 21 28 4 4 ...

Page 25: ... 07534800 1 Knob Clamping 312 18 14 07000037 1 Pin Plunger Pull 50 13 Thread x 310 Diameter 15 06529800 1 Nut Locking Center 31 18 16 00473700 2 Spacer 510 x 625 x 3 35 17 00474753 1 Chute Storage Bracket 18 05900013 1 Bolt Hex 38 16 x 1 00 19 06545500 6 Nut 38 16 Nyloc Flange 20 06206400 2 Bolt Round Head Square Neck 50 13 x 8 50 21 06212100 1 Bolt Round Head Square Neck 31 18 x 1 50 22 07500009 ...

Page 26: ...26 BELTS SPINDLES IDLERS AND MOWER BLADES 1 2 38 4 5 6 37 10 11 9 3 12 13 14 15 16 17 18 19 20 21 22 9 13 12 3 15 14 23 24 17 25 26 26 8 27 28 29 14 8 7 35 32 31 33 36 36 30 34 21 3 39 40 40 42 41 ...

Page 27: ...20 07300526 1 Sheave 38 ID x 5 00 OD V Idler 21 05962900 2 Bolt Hex 38 16 x 2 25 22 06436200 1 Washer Flat Steel 406 x 812 x 065 23 07328867 1 Pulley Double 1 ID x 6 75 OD 24 07328967 1 Pulley V 1 ID x 6 75 OD 25 07000030 1 Bolt 38 16 x 4 50 62 Diameter Eye 26 06535900 2 Nut Hex Jam 375 16 27 09081200 3 Blade Mower 20 50 28 06445700 3 Washer Bellville 63 x 1 625 x 14 29 05978900 3 Bolt Hex 62 18 x...

Page 28: ...nal purchaser for three years from the date of purchase Any defect in material or workmanship of the cast iron mower deck spindles will be repaired free of charge parts and labor to the original purchaser for two years after the date of purchase After two years the parts required to repair a defect in material or workmanship of the cast iron deck spindles not the labor will be provided free of cha...

Page 29: ...ich requires repair is not covered by this warranty This warranty applies only to products purchased in the United States including Puerto Rico and Canada In all other countries contact place of purchase for warranty information Disclaimer Ariens may from time to time change the design of its products Nothing contained in this warranty shall be construed as obligating Ariens to incorporate such de...

Page 30: ...GRAVELY 655 West Ryan Street Brillion WI 54110 1072 920 756 2141 Fax 920 756 2407 www gravely com ...

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