Gravely ZT 50 Owner'S/Operator'S Manual Download Page 16

GB - 16

IMPORTANT: 

Proper maintenance can 

prolong the life of unit. The following chart 

shows the recommended service schedule. 

Refer to the maintenance instructions in the 

Engine Manual for additional information.

NOTE: 

To have full access to the engine, the 

seat must be tipped forward (see 

TIPPING 

SEAT FORWARD

 on page 17) and the hood 

opened (see 

MOWER DECK REMOVAL 

AND INSTALLATION

 on page 18).

MAINTENANCE SCHEDULE

WARNING: 

AVOID INJURY. Read 

and understand the entire 

Safety

 

section before proceeding.

Interval

Task

Action

Each Use

Check 
Safety 
Interlock 
System

WARNING: 

Safety interlock system failure and improper 

operation of unit can result in death or serious injury. Test 

this system each time the unit is operated. If this system 

does not function as described, do not operate until repairs 

are made (see 

Safety Interlock System

 on page 12).

Check 
Parking 
Brake

Engage parking brake and engage transmission bypass lever (see 

MOVING UNIT MANUALLY

 on page 15). Push unit. If unit rolls, contact 

your Gravely Dealer.

Clean Unit Clean engine, battery, seat, mower deck, etc. of all dirt and debris. Do 

not use solvents, hard cleaners, or abrasives. 

NOTE: 

Protect painted surfaces with automotive type wax.

IMPORTANT: 

Do not spray the unit with water, especially when the unit 

is warm from operation. Water can seep into bearings and damage 

them.

Check 
Tires

See 

SPECIFICATIONS 

on page 28 for correct tire pressure.

CAUTION: 

Avoid injury! Explosive separation of tire and rim 

parts is possible when they are serviced incorrectly: 
•Do not attempt to mount a tire without the proper equipment 

and experience to perform the job. 

Do not inflate the tires above the recommended pressure. 

Do not weld or heat a wheel and tire assembly. Heat can cause 

an increase in air pressure resulting in an explosion. Welding 

can structurally weaken or deform the wheel. 

Do not stand in front or over the tire assembly when inflating. 

Use a clip-on chuck and extension hose long enough to allow 

you to stand to one side. 

Check 
Mower 
Blades

Check for worn or damaged mower blades (see 

SHARPENING 

MOWER BLADE

 on page 20).

Follow 
Engine 
Manual 
Mainten-
ance 
Schedule

Perform scheduled engine maintenance. 
Refer to Engine Manual for detailed 
instructions.

NOTE: 

To drain the oil, remove oil drain 

cap and attach the oil drain hose, 

supplied in the lit pack, to the drain plug. 

Rotate the drain to the left to allow oil to 

drain. Turn the drain to the right to close.

Oil Drain Plug

Summary of Contents for ZT 50

Page 1: ...hanol E10 or up to 10 MTBE methyl tertiary butyl ether is acceptable for use in this machine The use of any gasoline exceeding 10 ethanol E10 or 10 MTBE will void the product warranty Il est possible...

Page 2: ...r consulter la liste des langues disponibles pour votre quipement Les manuels imprim s dans des langues diff rentes de l anglais sont galement disponibles en t l chargement gratuit sur notre site Web...

Page 3: ...gravely comon the internet DELIVERY Customer Note If you have purchased this product without complete assembly and instruction by your retailer it is your responsibility to Read and understand all as...

Page 4: ...of control and tip over accidents Operation on all slopes requires extra caution Tragic accidents can occur if the operator is not alert to the presence of children Never assume that children will re...

Page 5: ...er overfill fuel tank Replace fuel cap securely and clean up spilled fuel OL1816 WARNING Over Filling may cause severe damage to evaporative system Always keep feet and hands away from rotating parts...

Page 6: ...es occurring to themselves other people or property Read the operator s manual Keep children and others away from unit while operating Never direct discharge toward other people Thrown objects can cau...

Page 7: ...ing parts during operation Rotating parts can cut off body parts ALWAYS keep hands away from all pinch points Start and operate unit only when seated in operator s position Steering control levers mus...

Page 8: ...g applicable local state or federal laws A spark arrester if it is used must be maintained in effective working order by operator Fuel is highly flammable and its vapors are explosive Handle with care...

Page 9: ...storing in closed area or covering unit Clean grass and debris from unit especially from around muffler and engine to help prevent fires For extended storage clean unit thoroughly See storage section...

Page 10: ...ectly Do not attempt to mount a tire without the proper equipment and experience to perform the job Do not inflate the tires above the recommended pressure Do not weld or heat a wheel and tire assembl...

Page 11: ...ng Levers 6 Fuel Tank 7 Mower Lift Pedal 8 Mower Deck 9 Discharge Chute 10 Parking Brake 11 Choke 915148 150 170 12 Throttle 915148 150 170 13 Throttle Choke Lever 915146 168 CONTROLS AND FEATURES Fig...

Page 12: ...0 Fast 1 Increases engine speed Slow 2 Decreases engine speed Choke 915148 150 170 Pull choke control out to start a cold engine Push choke control in when engine is warm Parking Brake Engages 2 and d...

Page 13: ...B regulations that will only function properly when the fuel tank has been filled to the recommended level Overfilling may cause permanent damage to evaporative emissions control system components Fil...

Page 14: ...n the switch and turn it to the Start position 3 As soon as the engine starts release the key 4 Move the choke control to the Off position from the Choke position Wait until the engine is running smoo...

Page 15: ...cut Vary cutting pattern with each mowing Do not allow grass or debris to collect inside of mower deck Clean after each use MOVING UNIT MANUALLY Pull the bypass lever out and lock it in place and then...

Page 16: ...leaners or abrasives NOTE Protect painted surfaces with automotive type wax IMPORTANT Do not spray the unit with water especially when the unit is warm from operation Water can seep into bearings and...

Page 17: ...ers that are missing or damaged Tighten all nuts and bolts to the correct torque values 100 Hours or Every Season Check All Belts Replace worn or deteriorated belts Check hydrostatic belt see REPLACIN...

Page 18: ...nd rear trunnions to lift arms 4 Install PTO belt on the engine drive pulley see REPLACING PTO BELT on page 23 5 Level and adjust pitch of mower deck see LEVELLING AND ADJUSTING PITCH OF MOWER DECK on...

Page 19: ...runnions first and re take the three measurements required to level and adjust the pitch of the mower deck These measurements are a The distance from the mower blades to the ground b The forward pitch...

Page 20: ...f cutting edge or round the corner at the end of mower blade 2 Sharpen mower blade by removing an equal amount of material from each end of mower blade 3 Check mower blade balance by sliding mower bla...

Page 21: ...nd Battery Cables Figure 14 1 Tip seat forward see TIPPING SEAT FORWARD on page 17 2 Disconnect negative cable first then positive cable 3 Clean battery cable ends negative terminal and positive termi...

Page 22: ...Removal and Installation on page 21 Jump Starting Gravely does not recommend jump starting your unit Jump starting can damage engine and electrical system components See your engine manual for more de...

Page 23: ...r needs to speed up to allow the unit to travel in a straight line 1 Determine which way the unit turns 2 Loosen jam nut on the adjustment bolt 3 Adjust speed by Turning adjustment bolt clockwise to d...

Page 24: ...EPLACING PTO BELT on page 23 2 Disconnect idler spring 3 Remove hydrostatic belt from hydrostatic transmission pulleys drive pulley and idler Install Figure 20 1 Install hydrostatic belt on idler driv...

Page 25: ...engine for at least 10 minutes after adding stabilizer to allow it to reach the carburetor NEVER store the engine with fuel in the fuel tank inside of a building with potential sources of ignition ST...

Page 26: ...e Manual for detailed instructions 3 Faulty engine 3 Contact your Gravely Dealer Unit moves with engine off and parking brake engaged 1 The parking brake needs adjustment 1 Contact your Gravely Dealer...

Page 27: ...34 Inch Mulching Blade 04265400 42 Inch Mower Blade 07200523 42 Inch Deck Belt 03971900 50 Inch Mower Blade 07200524 50 Inch Deck Belt ACCESSORIES See your authorized Gravely dealer to add these opti...

Page 28: ...tric Battery 12V Maintenance Free SLI U1B 275 PTO Power Take Off Electric Clutch Fuel Fuel Type Refer to Engine Manual Fuel Tank Capacity gal L 1 97 7 49 Size and Weight Length in cm 65 165 1 Width in...

Page 29: ...ectric Battery 12V Maintenance Free SLI U1B 275 PTO Power Take Off Electric Clutch Fuel Fuel Type Refer to Engine Manual Fuel Tank Capacity gal L 1 97 7 49 Size and Weight Length in cm 65 165 1 Width...

Page 30: ...the original purchaser any battery pack and or battery subassembly that fails due to defect in material or workmanship for one year after the date of purchase For the next 12 months Ariens Company wil...

Page 31: ...s mower blades mower vanes headlights light bulbs knives cutters Any misuse alteration improper assembly improper adjustment neglect or accident which requires repair is not covered by this warranty D...

Page 32: ...amount of time not to exceed 30 days If you have a question regarding your warranty coverage you should contact Ariens Company Technical Service Center at 1 920 756 4688 DEFECTS WARRANTY REQUIREMENTS...

Page 33: ...is article The manufacturer issuing the warranty will not be liable under this Article to warrant failures of warranted parts caused by the use of an add on or modified part Evaporative Emission Warra...

Page 34: ...GRAVELY 655 West Ryan Street Brillion WI 54110 1072 920 756 4688 Fax 920 756 2407 www gravely com...

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