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Simplicity 2690444, 2690445, 5100723 DECK LEVELING ADJUSTMENT, Figu e, Figure, 2 x 4 Locations, A. 1/4” Spacers, Adjust Lift Rod Timing, Figure 36. Check Lift Rod Timing

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Troubleshooting

Troubleshooting, Adjustment & Service

DECK LEVELING ADJUSTMENT

1. Park machine on a flat, level surface. Disengage the PTO, stop the engine and engage the parking brake. Rear tires must be inflated to 15 psi (1,03 bar); front tires to 25 psi (1,72 bar).

2. To check the lift rod timing, measure and record the distance between the lift pivots and the rod pivots. Repeat for other side of unit. See Figure 36.

	3. If the measurements are equal, skip to Step 5. If	Figure 36. Check Lift Rod Timing
	the measurements are NOT equal (greater than	Figure 36. Check Lift Rod Timing
	the measurements are NOT equal (greater than
	1/8” (3,17mm) difference), adjustment is required,
	1/8” (3,17mm) difference), adjustment is required,
	continue with Step 4.

4. Refer to Figure 37. To adjust the lift rod timing, adjust the 5/8” hex nuts on either side of the front lift pivot until the measurements are equal. Repeat for other side.

5. Place the deck height adjustment pin in the 4" (10,2 cm) position.

6.		Reproduction
6.	Place 2 x 4 blocks under each corner of the
	mower deck with the 3-1/2” sides being vertical.			Figu e 37.	Adjust Lift Rod Timing
	Place a 1/4” (0,64 cm) thick spacer		top of the
	rear 2 x 4 blocks. See Figure 38.
7.	Adjust the front eyebolts until the chains are ight					A
	and the deck is still resting on the 2 x 4’s. Tigh en
	jam nuts. See Figure 39
8.	Loosen the nuts and allow the rear		f the deck to
	rest on the 2 x 4’s and 1/4” spacers. Slide the
	chains in the slots until the chains are tight and
	tighten the nuts. See Figure 39.
9.	Remove all 2 x 4 blocks and spacers from under
	the mower deck.
				Figure 38.	2 x 4 Locations
				A. 1/4” Spacers

Figure 39. Hanger Chain Adjustment

38	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