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IMPORTANT: Charging at higher rates will damage the 
battery and cause excessive gassing and acid 
spewing.

Jump Starting

The unit used for jump starting should have a 12 volt 
battery with at least 500 cold cranking amperes, and a 
negatively grounded system.

1. Ensure battery is not frozen. If the fluid is frozen, 

remove battery from unit and allow to thaw before 
charging.

2. Connect the positive (+) jumper cable to the 

positive (+) terminal of the discharged battery.

3. Connect the other end of the same jumper cable to 

the positive (+) terminal of the booster battery.

4. Connect one end of the second jumper cable to the 

negative (-) terminal of the booster battery.

5. Make the final jumper cable connection to the 

engine block or the furthest ground point away from 
the discharged battery.

6. Start engine (refer to Owner’s Manual). If engine 

will not start after several tries, unit or battery may 
need service.

7. After engine starts, leave cables connected for one 

to two minutes.

8. Disconnect cables in reverse order.

9. Operate unit as normal to charge battery.

Storage

The battery is a perishable item and it should be stored 
properly to obtain a long, useful life. Batteries not in 
use will self discharge. 

If the battery will not be used for more than three 
months, it should be removed and stored in a cool, dry 
place.

 Any collection of dirt, grease, or electrolyte should be 
removed from the top of the battery. 

The battery must be recharged monthly or when the 
cell specific gravity reads less than 1.255 specific 
gravity. Before reinstalling the battery in the spring, it 
should always be fully recharged.

9.4  SWITCHES

Switches either open a circuit to stop current flow or 
close and allow current to flow through.

A normally open (N.O.) switch prevents current flow 
until the switch is actuated, completing the circuit and 
allowing current to flow through it. An example is a light 
switch - the lights are off until the switch is actuated 
and the lights go on.

A normally closed (N.C.) switch allows current to flow 
until the switch is actuated, breaking the circuit and 
stopping current flow through it. An example is an 
ignition switch that grounds the magneto when in the 
off position (completing the circuit) but opens the circuit 
when in the ON position allowing the engine to operate.

Switches are selected with regard to Current rating 
(contacts must be of sufficient size to carry the required 
current), Voltage rating (switches insulated for specific 
voltages), Case or housing (switches that are exposed 
to moisture and must be sealed to prevent moisture 
from entering), and Actuating type (push, pull, rotary, 
momentary contact, or micro switches).

NOTE: Check that the connections to the switches are 
secure and that a switch is being activated properly 
before performing electrical test on switches. (Safety 
switches on speed selector and clutch levers may be 
out of adjustment and not activating.)

IMPORTANT: When checking switches, remove them 
from their respective circuit by disconnecting the wires 
from the switch at the connector(s). Damage could 
result to the meter or machine components if switches 
are left in.

Normally Open Switch

To test a normally open switch (key, headlight, safety, or 
seat) connect the ohmmeter across the switch 
terminals. Meter should indicate open circuit (infinite 
resistance). Activate the switch. The ohmmeter should 
read up scale to zero resistance (Close Circuit). This 
indicates the switch is operating properly. Also check 
from each terminal to the switch case (if case is metal). 
reading should show infinite resistance indicating no 
short to ground.

Variation from test results described indicates a 
defective switch.

Normally Closed Switch

To test a normally closed switch connect the ohmmeter 
across the switch terminals. Meter should indicate a 
closed circuit (zero resistance). Activate the switch and 
the meter should move to open circuit (infinite 
resistance). Check from each terminal to ground 
(switch case). Meter should show open circuit (infinite 
resistance).

Variation from test results described indicates a 
defective switch.

WARNING: Make sure cables are clear of any 
moving engine parts before starting engine.

Summary of Contents for Promaster 250Z

Page 1: ......

Page 2: ...es 4 12 4 13 Steering Control Neutral Adjustment 4 13 4 14 Adjusting Control Levers 4 13 4 15 Adjusting The Parking Brake 4 14 4 16 Adjusting The Unit To Track Straight 4 14 4 17 Leveling The Mower De...

Page 3: ...ny part on this vehicle with anything other than a Gravely authorized replacement part may adversely affect the performance durability or safety of this unit and may void the warranty Gravely disclaim...

Page 4: ...seller on safe and proper operation If unit is to be used by someone other than original purchaser loaned rented or sold ALWAYS provide the Operator s Manual and any needed safety training before oper...

Page 5: ...unit Be alert and shut off unit if children enter area Personal Safety Read and obey all warning caution and instructions on the unit and in provided manuals Only trained adults may operate unit Trai...

Page 6: ...ns No flames No sparks No smoking near battery Always wear safety glasses and protective gear near battery DO NOT TIP battery beyond a 45o angle in any direction ALWAYS KEEP BATTERIES OUT OF REACH of...

Page 7: ...del Number CV25S CV25S EH65V 35177 EH65V Cycle 4 Engine Power HP KW min 1 25 HP 18 4 KW min 1 25 HP 18 4 KW min 1 22 HP 16 2 KW min 1 20 HP 14 7 KW min 1 22 HP 16 2 KW min 1 Starting System Electric F...

Page 8: ...r 6 Oil Pressure Indicator 7 Engine Frame and Hood 260Z 8 Fuel Tanks and Caps 9 Choke Control 10 Throttle Control 11 Ignition Switch 12 Power Take Off PTO Switch 13 Steering Levers 14 Mower Lift Lever...

Page 9: ...r original position in order to operate the unit Figure 4 4 5 CLEANING AND STORAGE IMPORTANT Never spray unit with water or store unit outdoors to help prevent sealed bearing rust or corrosion Water c...

Page 10: ...gs Order P N 00036700 ten pack of 14 oz cartridges When using Sten Mix Hi Temp Grease for the first time all components should be thoroughly cleaned prior to lubricating Apply oil at all pivot points...

Page 11: ...Idler pivot bolt must be loosened slightly to gain clearance to remove belt from under idler pulley Figure 7 3 Arrange new mower belt s on deck short belt first Retighten short belt idler pivot bolt...

Page 12: ...change the angle of the beveled edge If more than 0 5 inches 12 7mm are removed from the width of a blade discard the blade Make sure the sharpened blades are balanced Balance must be held within 1 3...

Page 13: ...ing brake interlock will move upward when the parking brake is set and hold the steering control levers in neutral The parking brake starting interlock switch will not be depressed unless the steering...

Page 14: ...ed by driving for a short distance about 200 feet with the brake on To do this bring the parking brake lever part way up while driving normally in a straight line This quickly breaks in the pads for m...

Page 15: ...re height of deck at each side Measurements must be within 1 16 1 5mm of each other 9 If measurements are out of range fix by adjusting chains on low side of deck 10 Once deck is level side to side me...

Page 16: ...ty suction pipe 2 Bad electrical connection 23 Sticking throttle restricted movement 44 Choked oil filter 3 Faulty starter motor 24 Exhaust pipe restriction 45 Bad solenoid switch 4 Incorrect grade of...

Page 17: ...l level and add as needed 5 4 ELECTRIC CLUTCH The motor output shaft has two pulley mechanisms The top pulley is direct drive and powers the hydraulic system The lower pulley is engaged by an electric...

Page 18: ...ect the problem before proceeding to the next steps 4 Make sure hydraulic fluid level is correct 5 Clean hydraulic hoses at the wheel motor 6 Disconnect the hydraulic hoses at the wheel motor note the...

Page 19: ...k bolt on pump and loosen front bolt 9 Remove pump 10 Insert the new pump into position with the front bolt in the mounting flange slot 11 Insert rear bolt and tighten both bolts 12 Attach hydraulic h...

Page 20: ...four bolt holes in the new hydraulic motor 10 Slide the motor into place and secure with two bottom bolts Apply Loctite to bolts 11 Reattach hydraulic lines to proper ports and tighten 12 Clean the ax...

Page 21: ......

Page 22: ...r Oil Filter Left Wheel Motor Upper Lower Right Wheel Motor Upper Lower PRESSURE RETURN SUCTION Right Pump Left Pump Oil Tank Deck Lower Deck Lift Lift Valve Reverse High Pressure Forward High Pressur...

Page 23: ...rom deck To Install Spindle 6 Bolt new spindle to mower deck 7 Place square key in position and slide pulley down the shaft Tighten bolt and washer 8 Replace belts 9 Install blade using flat washer lo...

Page 24: ......

Page 25: ...part would cost and the results may not be as good 9 2 ELECTRICAL MEASUREMENTS In many electrical circuits there is some visible effect which indicates that the circuit is functioning properly A swit...

Page 26: ...table oil Get medical attention immediately IMPORTANT In case of internal contact DO NOT induce vomiting Inspection Cleaning Drying and Maintenance Inspect the top of battery terminals cables terminal...

Page 27: ...to required level 11 Replace caps finger tight wash off and dry battery 12 Reinstall battery into unit and connect positive cable first then negative cable Specific Gravity Check The specific gravity...

Page 28: ...ed N C switch allows current to flow until the switch is actuated breaking the circuit and stopping current flow through it An example is an ignition switch that grounds the magneto when in the off po...

Page 29: ...ll If a relay or solenoid fails to operate the cause may be either electrical or mechanical To check electrically connect a voltmeter across the coil of the device and activate the circuit that operat...

Page 30: ...igh in one direction and low in the other If the readings are low in both directions the diode is shorted and if the readings are high the diode is open If the readings are the same in both directions...

Page 31: ...1 2 PINK BLACK PURPLE MAGNETO KILL RED BLACK HOUR METER BLACK PURPLE WHITE SEAT PTO RELAY 3 OIL PRESSURE BLUE WHITE BRAKE SWITCH 2 1 4 FUSE 30A PTO CLUTCH 1 2 PTO SWITCH 4 3 9 1 7 START RELAY REGULATO...

Page 32: ...WHITE SEAT PTO RELAY 3 OIL PRESSURE BLUE WHITE BRAKE SWITCH 2 1 4 FUSE 30A PTO CLUTCH 1 2 PTO SWITCH 4 3 9 1 7 START RELAY REGULATOR FUEL SOLENIOD OIL LIGHT RED YELLOW PURPLE BATTERY B A BLACK RED STA...

Page 33: ...RED BLACK HOUR METER BLACK PURPLE WHITE SEAT PTO RELAY OIL PRESSURE BLUE WHITE BRAKE SWITCH FUSE 30A PTO CLUTCH 1 2 PTO SWITCH 4 3 9 1 7 START RELAY REGULATOR FUEL SOLENIOD OIL LIGHT RED YELLOW PURPLE...

Page 34: ...GRAVELY A Division of Ariens Company 655 West Ryan Street P O Box 157 Brillion WI 54110 0157 920 756 2141 Fax 920 756 2407 www gravely com...

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