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Simplicity 2690444, 2690445, 5100723 TROUBLESHOOTING THE MOWER

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Troubleshooting

Troubleshooting, Adjustment & Service

Rider Troubleshooting Continued.

PROBLEM	CAUSE		REMEDY
Engine runs, but rider will	1.	Hydraulic release valve(s)	1. Turn valve(s) clockwise to close.
not drive.		in “open” position.
	2.	Belt is broken.	2.	See Drive Belt Replacement.
	3.	Drive belt slips.	3.	See problem and cause below.
	4.	Brake is not fully released.	4.	See authorized service dealer

Rider drive belt slips.	1.	Pulleys or belt greasy or oily.	1.	Clean as required.
	2.	Tension too loose.	2.	Adjust spring tension.
				See Drive Belt Replacement
	3.	Belt stretched or worn.	3.	Replace belt.

Brake will not hold.	1.	Brake is incorrectly adjusted.	1.	See Brake Adjustment.
	2.	Brake pads worn.	2. Replace with new brake pads.

Rider steers or handles poorly.	1.	Steering linkage is loose.	1.	Check and tighten any loose connections.
	2.	Improper tire inflation.	2.	See Regular Maintenance Section.

TROUBLESHOOTING THE MOWER

PROBLEM	CAUSE					REMEDY
Mower will not raise.	1.	Lift linkage not properly attached				1.	See authorized service dealer for repair.
	Reproduction
		or damaged.
Engine stalls easily with	1.	Engine speed too slow.				1.	Set to full throttle.
mower engaged.	2.	Ground speed t			fast.	2. Decrease Ground Speed.
	3.	Cutting height set t l w.				3.	Cut tall grass at maximum cutting
							he ght during first pass.
	4.	Discharge chu e jamming				4.	Cut grass with discharge pointing toward
		with cut grass.					previously cut area.
Excessive mower vibration.	1.	Blade m		un ing bolts are loose.		1. Tighten to 70 ft.lbs. (94 Nm).
	2.	M wer blades, arbors,				2.	Check and replace as necessary.
		r pulleys are bent.
	3.	Mower blades are out				3. Remove, sharpen, and balance blades.
		of balance.					See Maintenance Section.
	4.	Belt installed inc			rectly.	4.	Reinstall Correctly.

Excessive belt wear or breakage.	1.	Bent or		ugh pulleys.		1.	Repair or replace.
	2.	Using inco ect belt.				2.	Replace with correct belt.

Mower drive belt slips	1.	Idl	ull	y s ring broken or not		1.	Repair or replace as needed.
or fails to drive.		pro	rly attached.
	2.	Mow	drive belt broken.			2.	Replace drive belt.

Mower does not engage.	1.	Electrical wiring damage.				1.	Locate & repair damaged wire.
	2.	PTO clutch not adjusted				2. See PTO Clutch Adjustment section
	3.	Battery voltage too low.				3.	Recharge battery and check alternator.
							See Battery Maintenance section.

30	www.simplicitymfg.com

Contents

21HP Z -TurnRiders Mfg. No. D scription CitationReproductionSeries 23HP Zero-TurnRiders Page Table of Contents Safety Rules & Information Identification Numbers Safety Decals Safety Icons & Interlock System Operating Safety Read the ManualReproduction Children Slope Operation Thrown Objects Moving Parts Roll Bar Use Retaining Walls, Drop offs, and Water Overhead Obstacles Fuel and Maintenance Enclosed Areas GENERAL OPERATION TRANSPORTING AND STORAGE SLOPE OPERATION TOWED EQUIPMENT (RIDE-ONUNITS) CHILDREN EMISSIONS IGNITION SYSTEM Safety Rules and Information Safety Rules & Information ROLL BAR INSTRUCTIONS INSPECTION AND MAINTENANCE OF THE ROLL BAR SEAT BELT North American CE Models (Only) SAFETY DECALS Operational SAFETY Checks Deck Lift Pedal, Cutting Parking Brake Height Adjustment Pin & Deck Lift Lock Lever Throttle Control Choke Ground Speed Levers PTO (Power Take Off) Switch Ignition Switch Operation GENERAL OPERATING SAFETY STOPPING THE RIDER Smooth Travel Forward Travel Practice Reverse Travel Practice Practice Turning Around a Corner Practice Turning In Place Executing an End-Of-RowZero Turn RAISE & LOWER THE ROLL BAR AVOID SERIOUS INJURY OR DEATH FROM ROLL OVER: Keep roll bar in the raised position and use seat belt THERE IS NO ROLL OVER PROTECTION WHEN THE ROLL BAR IS DOWN Lower the roll bar only when necessary and NEVER remove it Tall Grass Requires Incremental Cutting Height of Grass When and How Often to Mow Operation Mowing Patterns Proper Broadcast Mowing Proper Mulching SAFETY ITEMS Before Every Spring Each CHECK TIRE PRESSURES Tire Pressure Figure 14. Checking Tire Pressure CHECKING / ADDING FUEL Lubricating the Front Casters Cleaning the Battery and Cables SERVICING THE MOWER BLADES Figure 22. Removing the Blade Mower blades are sharp. For your personal safety, do not handle mower blades with bare hands. Careless or improper handling of TROUBLESHOOTING THE RIDER PROBLEM CAUSE REMEDY Troubleshooting TROUBLESHOOTING THE MOWER TROUBLESHOOTING COMMON CUTTING PROBLEMS SEAT ADJUSTMENT GROUND SPEED CONTROL LEVER ADJUSTMENT Seat Adjustment Figure 25. Seat Adjustment Troubleshooting, Adjustment & Service PARKING BRAKE ADJUSTMENT Do not adjust the spring to be shorter than 1-15/16”(4,9 cm) when compressed. This may damage the brake mechanism Figure 28. Parking Brake Adjustment REAR SUSPENSION ADJUSTMENT POSITION #1 POSITION #2 (FACTORY SET) To adjust the spring pre-load: Blade Brake Check RETURN-TO-NEUTRAL NEUTRAL ADJUSTMENT Figure 33. Neutral Adjustment (RH side shown) A. Adjustment Linkage Rod Troubleshooting, Adjustment & Service DECK LEVELING ADJUSTMENT Figure 36. Check Lift Rod Timing Figu e Adjust Lift Rod Timing Figure HYDRAULIC PUMP DRIVE BELT REPLACEMENT 8 3/8” (21,2 cm) Figure 40. Hydraulic Pump Drive Belt MOWER BELT REPLACEMENT To avoid damaging belts, DO NOT PRY BELTS OVER PULLEYS Figure 41. Mower PTO Belt A. Idler Arm B. Stationary Idler Pulley 21 HP Briggs HydroGear PG-3H / HGM-12C 23 HP Briggs BELTS AND BLADES: & Stratton 48” Mower 23 HP Briggs & Stratton 52” Mower