Exmark 850 Lawn Aerator User Manual


 
Contents
Introduction ........................................................... 3
Safety ..................................................................... 5
Safety Alert Symbol ......................................... 5
Safe Operating Practices.................................. 5
Safety and Instructional Decals ....................... 9
Specications ....................................................... 12
Model Numbers............................................ 12
Systems ......................................................... 12
Dimensions................................................... 13
Torque Requirements .................................... 13
Product Overview ................................................ 14
Operation ............................................................. 14
Controls........................................................ 14
Pre-Start........................................................ 16
Operating Instructions .................................. 16
Transporting ................................................. 18
Maintenance ......................................................... 19
Recommended Maintenance Schedule(s) ........... 19
Periodic Maintenance ....................................... 20
Check Engine Oil Level ................................. 20
Check Mower Blades ..................................... 20
Check Safety Interlock System ....................... 21
Check for Loose Hardware ............................ 21
Service Air Cleaner........................................ 21
Change Engine Oil ........................................ 22
Check Tire Pressures ..................................... 22
Check Condition Of Belts.............................. 22
Lubricate Grease Fittings............................... 22
Check Spark Plugs......................................... 23
Check Grease Level, Input and Output
Shaft Bearing Wear on Peerless
Transmission............................................. 23
Thread Locking Adhesives............................. 24
Mobil HTS Grease (Or Food-Grade
Anti-seize)................................................. 24
Copper-Based Anti-seize .............................. 24
Dielectric Grease........................................... 24
Adjustments ..................................................... 25
Adjusting the Cutting Height ......................... 25
Adjusting the Axle Position............................ 26
Adjusting the Number of Spacers below
Caster Support Hub................................... 27
Adjusting the Cutting Height with Blade
Spacers...................................................... 27
Transmission Belt Adjustment ....................... 28
Wheel Drive Belt Pulley Scrapers ................... 28
Engine to Mower Deck Belt........................... 28
Blade Brake Adjustment ................................ 29
Belt Guide Adjustment.................................. 30
Brake and Wheel Drive Linkage
Adjustment ............................................... 30
Shifter Lever Adjustment............................... 32
Shifter Detent Adjustment............................. 33
PTO Safety Switch Adjustment...................... 33
Handle Height Adjustment............................ 33
Wheel Drive Spring Tension
Adjustment ............................................... 33
Cleaning ........................................................... 34
Clean Engine and Exhaust System
Area .......................................................... 34
Remove Engine Shrouds and Clean Cooling
Fins........................................................... 34
Clean Debris From Machine .......................... 35
Clean Grass Build-Up Under Deck ................ 35
Waste Disposal.............................................. 35
Troubleshooting ................................................... 36
Schematics ........................................................... 38
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