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Read these safety rules and follow them closely. Failure to obey these rules could result in loss of control of unit, 
severe personal injury or death to you, or bystanders, or damage to property or equipment. 

This mowing deck is 

capable of amputating hands and feet and throwing objects.

   The triangle         in text signifies important 

cautions or warnings which must be followed.

Transporting and Storage

 1.  When transporting the unit on an open trailer, make sure 

it is facing forward, in the direction of travel.  If the unit 
is facing backwards, wind lift could damage the unit.  

 2.  Always observe safe refueling and fuel handling 

practices when refueling the unit after transportation or 
storage.

 3.  Never store the unit (with fuel) in an enclosed poorly 

ventilated structure.  Fuel vapors can travel to an ignition 
source (such as a furnace, water heater, etc.) and cause 
an explosion.  Fuel vapor is also toxic to humans and 
animals.

 4.  Always follow the engine manual instructions for   

storage preparations before storing the unit for both 
short and long term periods.

 5.  Always follow the engine manual instructions for proper 

start-up procedures when returning the unit to service.

 6.  Never store the unit or fuel container inside where there 

is an open flame or pilot light, such as in a water heater. 
Allow unit to cool before storing.

Operator Safety

General Operation

 1.  Read, understand, and follow all instructions in the 

manual and on the unit before starting.

 2.  Do not put hands or feet near rotating parts or under 

the machine.  Keep clear of the discharge opening at all 
times.

 3.  Only allow responsible adults, who are familiar with the 

instructions, to operate the unit (local regulations can 
restrict operator age).

 4.  Clear the area of objects such as rocks, toys, wire, etc., 

which could be picked up and thrown by the blade(s).

 5.  Be sure the area is clear of other people before mowing. 

Stop the unit if anyone enters the area.

 6.  Never carry passengers.
 7.  Do not mow in reverse unless absolutely necessary. 

Always look down and behind before and while travelling 
in reverse.

 8.  Never direct discharge material toward anyone.  Avoid 

discharging material against a wall or obstruction.  
Material may ricochet back toward the operator.  Stop 
the blade(s) when crossing gravel surfaces.

 9.  Do not operate the machine without the entire grass 

catcher, discharge guard (deflector), or other safety 
devices in place and operational.

 10. Slow down before turning.
 11. Never leave a running unit unattended. Always 

disengage the blades (PTO), set parking brake, stop 
engine, and remove keys before dismounting.

 12. Disengage blades (PTO) when not mowing.  Shut off 

engine and wait for all parts to come to a complete 
stop before cleaning the machine, removing the grass 
catcher, or unclogging the discharge guard.

 13. Operate the machine only in daylight or good artificial 

light.

 14. Do not operate the unit while under the influence of 

alcohol or drugs.

 15  Watch for traffic when operating near or crossing 

roadways.

 16. Use extra care when loading or unloading the unit into a 

trailer or truck.

 17. Always wear eye protection when operating this unit.
 18. Data indicates that operators, age 60 years and above, 

are involved in a large percentage of power equipment-
related injuries.  These operators should evaluate their 
ability to operate the equipment safely enough to protect 
themselves and others from injury.

 19. Follow the manufacturer’s recommendations for wheel 

weights or counterweights.

 20. Keep in mind the operator is responsible for accidents 

occurring to other people or property.

 21. All drivers should seek and obtain professional and 

practical instruction.

 22. Always wear substantial footwear and trousers.  Never 

operate when barefoot or wearing sandals.

 23. Before using, always visually check that the blades and 

blade hardware are present, intact, and secure.  Replace 
worn or damaged parts.

 24. Disengage attachments before: refueling, removing an 

attachment, making adjustments (unless the adjustment 
can be made from the operator’s position).

 25. When the machine is parked, stored, or left unattended, 

lower the cutting means unless a positive mechanical 
lock is used.

 26. Before leaving the operator’s position for any reason, 

engage the parking brake (if equipped), disengage the 
blades (PTO), stop the engine, and remove the key.

 27. To reduce fire hazard, keep the unit free of grass, leaves, 

& excess oil.  Do not stop or park over dry leaves, 
grass, or combustible materials.

 28. OSHA regulations may require the use of hearing 

protection when exposed to sound levels greater than 85 
dBA for an 8 hour time period.

WARNING

Extended exposure to excessively high  
sound levels can result in hearing loss.

This machine produces sound levels in excess of 85 dBA 

• 

at the operator’s ear and can cause hearing loss through 
extended periods of exposure.
Wear hearing protection when operating this machine.

• 

WARNING

It is a violation of California Public Resource Code, Section 
4442, to use or operate the engine on any forest-covered, 
brush-covered, or grass-covered land unless the exhaust 
system is equipped with a spark arrester, as defined in 
Section 4442, maintained in effective working order.  Other 
states or federal jurisdictions may have similar laws.
Contact an Authorized Service Dealer to obtain a spark 
arrester designed for the exhaust system installed on this 
engine.

Summary of Contents for 5101604

Page 1: ...5101604 Revision A Rev Date 07 2008 TP 100 7391 A CB S 30HP Zero Turn Riders Mfg No Description 5900763 Simplicity 30HP Cobalt Zero Turn Rider with 61 Mower Cobalt Series OPERATOR S MANUAL...

Page 2: ...LC Copyright 2008 Briggs Stratton Corporation Milwaukee WI USA All rights reserved The Simplicity logo is a trademark of Briggs Stratton Corporation Milwaukee WI USA Contact Information Simplicity Man...

Page 3: ...el 27 Fuel Filter 27 Change Oil Filter 27 Check Hydraulic Oil Level 28 Change Hydraulic Oil Filter 28 Lubrication 29 Servicing the Mower Blades 30 Battery Charging 32 Battery Maintenance 32 Ground Spe...

Page 4: ...with the equipment you have chosen ask a professional contact your local authorized dealer Read the Manual The operator s manual contains important safety information you need to be aware of BEFORE y...

Page 5: ...e blades can pick up and throw debris that could seriously injure a bystander Be sure to clean up the area to be mowed and remove objects that could be thrown by the blade BEFORE you start mowing Do n...

Page 6: ...arances before driving under any objects Do not allow the roll bar to contact low overhanging obstacles such as tree branches and guide wires Roll Bar Use Keep the roll bar in the raised position and...

Page 7: ...line spills should be cleaned up promptly and before operation begins Gasoline should be stored only in sealed containers approved for fuel Proper maintenance is critical to the safety and performance...

Page 8: ...ys before dismounting 12 Disengage blades PTO when not mowing Shut off engine and wait for all parts to come to a complete stop before cleaning the machine removing the grass catcher or unclogging the...

Page 9: ...not operate on it Control of a walk behind or ride on machine sliding on a slope will not be regained by the application of the brake The main reasons for loss of control are insufficient tire grip on...

Page 10: ...fuel line clamps further than necessary Ensure clamps grip hoses firmly over the filter after installation 12 Do not use gasoline containing METHANOL gasohol containing more than 10 ETHANOL gasoline a...

Page 11: ...ld straighten or repair the ROLL BAR Never alter the ROLL BAR by welding anything to it or by drilling additional holes Before First Time Use Inspect the ROLL BAR structure and mounting hardware for 1...

Page 12: ...Check for dirt or debris in the retraction mechanism If dirt or debris is found it should be removed 2 Check to make sure the retraction mechanism retracts easily and completely 3 Check for damage to...

Page 13: ...rider and mower should be carefully read and obeyed Personal bodily injury can result when these instructions are not followed The information is for your safety and it is important The safety decals...

Page 14: ...ked in the NEUTRAL position after the operator returns to the seat in order to start the engine Safety Icons The alert symbol is used to identity safety information about hazards that can result in pe...

Page 15: ...USA 53074 0997 Simplicity Mfg Inc S A M P L E S A M P L E S A M P L E S A M P L E North American Models CE Models Model xxxxxxx Serial xxxxxxxxxx xxxxxxxxxxxxxxxxxxxx 20xx kg kW xxxx xxx x xx max XXX...

Page 16: ...choke Push to knob DOWN to open the choke Deck Lift Pedal Cutting Height Adjustment Pin Deck Lift Lock Lever These control the cutting height of the mower deck Depress the pedal until it locks into th...

Page 17: ...s the time of the PTO being engaged The hour meter measures the number of hours the PTO has been engaged The hour meter will flash an initial oil change indicator at 5 hours and a lubrication reminder...

Page 18: ...has a zero turning radius and the rear wheels could fall off the ramps or the rider could tip over injuring the operator or bystanders D C A B Figure 1 Pre start Checks A Fuel Tank Cap B Crankcase Oil...

Page 19: ...ck the seat into position Pushing the Rider by Hand 1 Disengage the PTO engage the parking brake turn the ignition OFF and remove the key 2 Lift the seat plate to gain access to the hydraulic pumps 3...

Page 20: ...7 cm position 2 Place the cutting height adjustment pin in the desired cutting height 3 Depress the deck lift foot pedal then push the lock lever C towards the right to release the lock 4 Release the...

Page 21: ...f an emergency the engine can be stopped by simply turning the ignition switch to STOP Use this method only in emergency situations For normal engine shut down follow the procedure given in Stopping t...

Page 22: ...rol levers inward Basic Driving Forward Travel Practice Gradually move both ground speed control levers evenly FORWARD from neutral Slow down and repeat NOTE Straight forward travel takes practice If...

Page 23: ...h operating the Zero Turn rider you will learn more maneuvers that will make your mowing time easier and more enjoyable Remember the more you practice the better your control of the Zero Turn will be...

Page 24: ...store a fueled unit in an enclosed structure see warning Battery life will be increased if it is removed put in a cool dry place and fully charged about once a month If the battery is left in the uni...

Page 25: ...ition Cutting the grass too short causes weak thin grass plants which are easily damaged by dry periods and pests Cutting too short is often more damaging than allowing the grass to be slightly higher...

Page 26: ...using a slower ground speed will improve the cutting efficiency of the blades and prevents many common cutting problems Use an appropriate ground speed for the thickness and height of the grass you a...

Page 27: ...s cannot function properly if the grass is wet or if the grass is simply to high to cut Even more than normal mowing mulching requires that the grass be dry and the the appropriate amount is cut Do no...

Page 28: ...50 Hours Spring Fall Check Safety Interlock System Check Rider Brakes Check Mower Blade Stopping Time Rider Maintenance Before Each Use Every 5 Hours Every 25 Hours Every 100 Hours Every 250 Hours Spr...

Page 29: ...draining replace the cap and wipe up any spilled oil Reinstall the oil drain hose into the cable clamp to retain the hose during normal operation 5 Place an absorbent shop cloth under the engine oil f...

Page 30: ...the gasket makes contact then tighten 3 4 of a turn more 5 Run the unit for several minutes and check the transmission oil level IMPORTANT NOTE Use caution after changing the filter air in the hydrau...

Page 31: ...nerally all moving metal parts should be oiled where contact is made with other parts Keep oil and grease off belts and pulleys Remember to wipe fittings and surfaces clean both before and after lubri...

Page 32: ...es Figure 26 Loosening the Mower Blade for Removal Figure 27 Inspecting the Mower Blade Tips A Mower Blade Cutting Edge B Square Corner C Air Lift D Wear Measurement DISCARD Mower Blade If greater tha...

Page 33: ...ther end of the mower blade moves downward sharpen the heavy end until the mower blade is balanced See Sharpening the Mower Blades for proper sharpening instructions 4 Repeat the process until the mow...

Page 34: ...component If there is any doubt about the cause of the problem see your dealer If you need to replace the battery follow the steps under Cleaning the Battery Cables in the Regular Maintenance section...

Page 35: ...e alignment as described above Figure 33 Control Lever Adjustment A Alignment Hardware B Placement Hardware C Ground Speed Control Lever Figure 34 Top Speed Adjustment A Top Speed Adjustment Bolt B Co...

Page 36: ...veral attempts to achieve neutral depending on how much the machine creeps Return to Neutral Adjustment Checking the Adjustment To determine if it is necessary to adjust the neutral return perform the...

Page 37: ...engage the PTO engage the parking brake turn off the engine and remove the ignition key 2 Remove the PTO drive belt see Mower Belt Replacement for removal instructions 3 Remove the hardware that secur...

Page 38: ...The shock assembly can be adjusted to vary the amount of pre load applied to the springs This allows the operator to maintain the ride height Use less pre load for light weight operators Use more pre...

Page 39: ...emove the height adjustment pin A Figure 41 and lower the mower deck 2 To ensure that the deck is in the lowest position push the pedal by hand towards the rear of the unit and install the height adju...

Page 40: ...ical Place a 1 4 0 64cm thick spacer on top of the rear 2 x 4 blocks See Figure 43 6 Adjust the front eyebolts until the chains are tight and the deck is still resting on the 2 x 4 s and spacers Tight...

Page 41: ...O pulley the spindle pulleys and all idler pulleys except the stationary pulley B Figure 47 6 Carefully rotate the breaker bar counter clockwise and install the belt on the stationary idler pulley B 7...

Page 42: ...place fuse 6 Clean the battery terminals 7 Recharge or replace 8 Visually check wiring replace broken or frayed wires Tighten loose connections 9 Repair or replace See authorized dealer 10 Replace as...

Page 43: ...horized service dealer for repair Engine stalls easily with mower engaged 1 Engine speed too slow 2 Ground speed too fast 3 Cutting height set too low 4 Discharge chute jamming with cut grass 1 Set to...

Page 44: ...rectly 2 Tires are not properly inflated 3 Blades are damaged 4 Deck shell is damaged 5 Mower spindle is bent or loose 6 Blades are installed incorrectly 1 Level the deck correctly 2 Check and inflate...

Page 45: ...ting conditions and engine to engine variability Given both the wide array of products on which engines are placed and the variety of environmental issues applicable to operating the equipment the gas...

Page 46: ...h a vertical tree a power line pole a fence post or any vertical structure 3 Compare the angle of the fold with the angle of the hill SLOPE INDENTIFICATION GUIDE ALIGN THIS EDGE WITH A VERTICAL SURFAC...

Page 47: ......

Page 48: ...11 gallons 41 6 L total Rear Wheels Tire Size 22 x 11 00 10 Inflation Pressure 15 psi 1 03 bar Front Wheels Tire Size 13 x 5 00 6 Inflation Pressure 25 psi 1 72 bar TRANSMISSIONS HydroGear PG 3H HGM...

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