This document is an operator's manual for the Exmark Viking mower, specifically for serial numbers 408,644,346 & Higher, Part No. 4505-182 Rev. A.
Function Description:
The Exmark Viking is a commercial turf care equipment designed for mowing grass. It features a walk-behind design, allowing the operator to control the machine from behind. The mower is equipped with a cutting deck that can be either 36 inches or 48 inches wide, suitable for various mowing needs. It utilizes a hydraulic drive system for independent speed control, braking, and neutral to each drive wheel, enabling precise maneuvering, forward and reverse movement, stopping, and power turning. The machine is designed for one operator and emphasizes safety through various interlock systems and warnings.
Important Technical Specifications:
- Engine:
- Engine Oil Type: Exmark 4-Cycle Premium Engine Oil
- RPM: Full Speed: 3600 (No Load)
- Idle: 1550 RPM
- Fuel System:
- Capacity: 5.0 gal. (18.9 L)
- Fuel Recommendations: Unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method). Oxygenated fuel with up to 10% ethanol or 15% MTBE by volume is acceptable. Ethanol blends above 10% (E15 or E85) and gasoline containing methanol are not recommended.
- Fuel Filter: Replaceable In-line
- Fuel Shut-Off Valve: 1/4 turn
- Transmission:
- Two Hydro Gear variable displacement piston pumps coupled to two high-efficiency Parker wheel drive motors.
- Hydraulic Oil: Exmark Premium Hydro Oil.
- Hydraulic Oil Capacity: 2.4 qt. (2.2 L)
- Hydraulic Filter: Replaceable cartridge type. P/N 109-4180 (25 microns, 10 psi bypass) for summer use above 32°F (0°C); P/N 1-523541 (40 microns, 18 psi bypass) for winter use below 32°F (0°C).
- Speeds: 0-6.2 mph (10.0 km/hr) forward; 0-2.2 mph (3.5 km/hr) reverse.
- Wheel Drive System: Direct coupled to Parker wheel drive motors with 1 inch (25.4 mm) tapered shaft.
- Tires & Wheels:
- Drive (Pneumatic, Air-Filled): Quantity 2, Tread Turf Master, Size 16 x 6.50-8, Ply Rating 4, Pressure 14 psi (97 kPa).
- Front Caster (Semi-Pneumatic): Quantity 2, Tread Smooth, Size 9 x 3.50-4.
- Cutting Deck:
- Cutting Width: 36 inch Deck (35.38 inches / 89.9 cm); 48 inch Deck (47.25 inches / 120.0 cm).
- Blade Size: 36 inch Deck (18.00 inches / 45.7 cm, Quantity 2); 48 inch Deck (16.25 inches / 41.3 cm, Quantity 3).
- Deck Drive: Manual engagement of belt with over-center lock. Blade belt tension adjustable via turnbuckle.
- Blade Brake: Friction brake pad stops blade rotation when PTO is disengaged.
- Deck Mounting: Bolted directly to engine deck.
- Deck Depth: 36 inch Deck (5.0 inches / 12.7 cm); 48 inch Deck (5.0 inches / 12.7 cm).
- Cutting Height Adjustment: 1 inch (2.5 cm) to 4 1/4 inches (10.8 cm) in 1/4 inch (6.4 mm) increments using caster spacers, blade spacers, and axle height.
- Dimensions:
- Overall Width: 36 inch Deck (Deflector Up 36.4 inches / 92.5 cm, Deflector Down 47.0 inches / 119.4 cm); 48 inch Deck (Deflector Up 48.1 inches / 122.2 cm, Deflector Down 57.9 inches / 147.1 cm).
- Overall Length: 36 inch Deck (77.3 inches / 196.3 cm); 48 inch Deck (72.3 inches / 183.6 cm).
- Overall Height: 36 inch Deck (43.2 inches / 109.7 cm); 48 inch Deck (43.2 inches / 109.7 cm).
- Tread Width (Outside to Outside of Tires, Widthwise): 36 inch Deck (35.6 inches / 90.4 cm); 48 inch Deck (40.4 inches / 102.6 cm).
- Curb Weight: 36 inch Deck (573 lb / 260 kg); 48 inch Deck (633 lb / 287 kg).
Usage Features:
- Operator Presence Control (OPC) Levers: Located on the upper handle assembly, these levers ensure the operator is in the normal operating position. Releasing them initiates engine shutdown if the speed control lever is not in neutral or the PTO is engaged.
- Steering/Brake Controls: Fingertip drive control levers provide independent speed control, braking, and neutral for each drive wheel.
- Tracking Adjustment Knob: Located on the right-hand side of the rear fuel tank support, this knob allows adjustment for straight tracking when drive levers are released.
- PTO Engagement Control: A knob on the left side of the control console engages (pull up) and disengages (push down) the blades.
- Cold Start Kit: Eases starting in cold weather or after prolonged non-use by releasing tension on the pump belt.
- Fuel Shut-Off Valve: Rotates 1/4 turn counterclockwise to turn fuel on.
- Engine Starting: Requires PTO disengaged, speed control lever in neutral, and park brake engaged.
- Slope Operation: Emphasizes operating across slopes, avoiding excessively steep or wet slopes, and identifying hazards.
- Safety Interlock System: Prevents engine start if OPC levers are not held, speed control is not in neutral, or PTO is engaged. Engine stops if OPC levers are released and speed control is not in neutral or PTO is engaged. Park brake must be disengaged to move speed control out of neutral or for engine shutdown.
Maintenance Features:
- Maintenance Schedule:
- After first 5 hours: Change engine oil.
- After first 250 hours: Change hydraulic filter.
- Before each use or daily: Check engine oil level, mower blades, loose hardware, grease caster wheel bearings and pivots, check safety interlock system, clean grass/debris from machine/cutting deck, clean engine/exhaust system area, clean engine air cooling system, clean grass build-up under deck.
- Every 25 hours: Service foam element of air cleaner.
- Every 40 hours: Check hydraulic oil level, tire pressures, condition of belts, grease pump drive idler pivot, pump control bearings, mower deck idler pivot.
- Every 80 hours: Remove engine shrouds and clean cooling fins.
- Every 100 hours: Service paper element of air cleaner, change engine oil.
- Every 160 hours: Check spark plugs.
- Every 200 hours: Replace paper element of air cleaner.
- Every 500 hours: Change hydraulic filter (yearly if using Mobil 1 15W50), replace emissions air intake filter.
- Monthly: Grease PTO engagement bellcrank.
- Engine Maintenance: Refer to the Engine Owner's Manual for specific procedures. Emphasizes allowing the engine to cool before service and not altering governor settings.
- Check Engine Oil Level: Instructions for checking oil level when engine is cold and on a level surface.
- Check Mower Blades: Inspect and sharpen/replace blades.
- Replacing Discharge Deflector: Instructions for proper installation and spring loading of the deflector.
- Check for Loose Hardware: Daily inspection and tightening of hardware.
- Service Air Cleaner: Regular servicing of foam and paper elements.
- Change Engine Oil: Detailed steps for draining and refilling engine oil, including oil filter replacement.
- Check Hydraulic Oil Level: Instructions for checking and refilling hydraulic oil, noting temperature-dependent levels.
- Lubricate Grease Fittings: Chart provided for fitting locations, initial pumps, number of places, and service intervals.
- Check Spark Plugs: Regular inspection, gap adjustment, and replacement.
- Check Safety Interlock System: Chart outlines normal engine starting scenarios and expected outcomes based on neutral lock/parking brake, PTO, ignition key, and speed control lever positions.
- Change Fuel Filter: Replacement as required.
- Change Hydraulic System Filter: Regular replacement with specific part numbers for different temperatures.
- Hydraulic System Air Purge: Procedure for purging air from the hydraulic system after component removal or line disconnection.
- Adjusting the Cutting Height: Detailed table and instructions for adjusting cutting height using axle position and blade spacers.
- PTO Engagement Linkage Adjustment: Procedure for adjusting the linkage to ensure proper PTO engagement.
- Engine to Mower Deck Belt Adjustment: Steps for adjusting belt tension to prevent slipping and reduce wear.
- PTO Safety Switch Adjustment: Ensures the safety switch is properly engaged when the PTO is disengaged.
- Blade Brake Adjustment: Adjusting the blade brake pad to rest against the sheave.
- Belt Guide Adjustment: Setting belt guides for proper operation.
- Hydro Drive Linkage Adjustment: Detailed instructions for adjusting neutral lock latch, neutral control linkages, and hydro control linkages to ensure proper drive wheel operation and tracking.
- Tracking Adjustment: Fine-tuning the mower's tracking on a level surface.
- Hydro Pump Spring Tension Setting: Adjusting spring force for different drive conditions.
- Park Brake Adjustment: Ensuring proper clearance between brake tire bars and tires.
- Cleaning: Instructions for cleaning debris from the machine, engine, and exhaust system, emphasizing safety precautions.
- Waste Disposal: Guidelines for disposing of used motor and hydraulic oil responsibly.
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