Gravely PM320 Owner/Operator And Parts Manual Download Page 5

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Inspect unit before each use for: missing or damaged decals 
and shields, correctly operating safety interlock system, and 
deterioration of grass catchers. Replace or repair as 
needed.

ALWAYS check overhead and side clearances carefully 
before operation. ALWAYS be aware of traffic when 
operating along streets or curbs.

Keep children and people away. 

Keep children out of work area and under watchful care of a 
responsible adult.

Keep area of operation clear of all toys, pets, and debris. 
Thrown objects can cause injury. 

Check for weak spots on docks, ramps or floors. Avoid 
uneven work areas and rough terrain. Stay alert for hidden 
hazards or traffic.

DO NOT operate near drop-offs, ditches, or embankments. 
Unit can suddenly turn over if a wheel is over the edge of a 
cliff or ditch, or if an edge caves in.

Data indicates that operators, age 60 and above, are 
involved in a larger percentage of riding mower related 
injuries. These operators should evaluate their ability to 
operate the riding mower safely enough to protect 
themselves and others from serious injury.

Read the entire Owner/Operator manual and other training 
material. If the operator or the mechanic cannot read the 
manual, it is the owner’s responsibility to explain it to them. 
Only the user can prevent and is responsible for accidents or 
injuries occurring to themselves, other people or property.

Only trained adults may operate or service unit. Training 
includes actual operation.

Local regulations may restrict the age of the operator.

NEVER allow children to operate or play on or near unit. Be 
alert and shut off unit if children enter area.

NEVER operate unit after or during the use of medication, 
drugs or alcohol. Safe operation requires your complete and 
unimpaired attention at all times.

DO NOT wear loose clothing or jewelry and tie back hair that 
may get caught in rotating parts.

Wear adequate outer garments.

NEVER wear open sandals or canvas shoes during 
operation. Wear adequate safety gear, protective gloves and 
footwear.

Wear proper footwear to improve footing on slippery 
surfaces.

Always wear safety goggles or safety glasses with side 
shields when operating mower.

Moving parts can cut or amputate fingers or a hand. Wrap 
blade(s) or wear gloves to service. On multiblade mowers, 
rotation of one blade will cause 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 cool.

ALWAYS keep hands and feet away from all pinch points.

Fumes from the engine exhaust can cause death or serious 
injury. DO NOT run engine in an enclosed area. Always 
provide good ventilation.

Read, understand, and follow all instructions in the manual 
and on the machine before starting.

Understand:

• How to operate all controls

• The functions of all controls

• How to STOP in an Emergency

• Braking and steering characteristics

• Turning radius and clearances

Keep safety devices or guards in place and functioning 
properly. NEVER modify or remove safety devices.

Do not operate without either entire grass catcher or the 
discharge guard in place.

Stop engine before removing grass catcher or unclogging 
chute.

Ensure Safety Interlock System is functioning properly. DO 
NOT operate unit if safety interlock is damaged or disabled.

Before starting engine: disengage PTO, place direction 
control pedal in neutral, lower attachment and set parking 
brake.

Use care when approaching blind corners, shrubs, trees or 
other objects that may obscure vision.

Dust, smoke, fog, etc. can reduce vision and cause an 
accident. Mow only in daylight or good artificial light.

Avoid slippery surfaces. Always be sure of your footing.

DO NOT mow on wet grass. Reduced traction could cause 
sliding and effect the machine’s stability.

Watch for traffic when operating near or crossing roadways.

Never carry passengers.

DO NOT try to stabilize the machine by putting your foot on 
the ground.

Never direct discharge towards persons or property that may 
be injured or damaged by thrown objects. Use extreme 
caution on gravel surfaces.

Always stand clear of the discharge area.

ALWAYS disengage PTO, stop unit and engine, remove key, 
engage parking brake and allow moving parts to stop before 
leaving operator’s position.

Never engage PTO while raising attachment or when 
attachment is in raised position.

DO NOT operate at too fast a rate. DO NOT change engine 
governor settings or over-speed engine. Slow down before 
turning.

DO NOT operate in reverse unless absolutely necessary. 
ALWAYS look down and behind before and while backing.

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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