Perkins — FOR SAFETY:

A Perkins service procedure — check it applies to your exact model before use.

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Procedure

1. Do not operate machine: -- unless trained and authorized. -- unless operator manual is read and understood. -- if it is not in proper operating condition. -- in flammable or explosive areas unless designed for use in those areas. -- in areas with possible falling objects unless equipped with overhead guard.
2. Before starting machine: -- check for fuel, oil, and liquid leaks. -- keep sparks and open flame away from refueling area. -- make sure all safety devices are in place and operate properly. -- check brakes and steering for proper operation.
3. When starting machine: -- keep foot on brake and directional pedal in neutral.
4. When using machine: -- use brakes to stop machine. -- go slow on inclines and slippery surfaces. -- use care when reversing machine. -- move machine with care when hopper is raised. -- make sure adequate clearance is available before raising hopper. -- do not carry passengers on machine. -- always follow safety and traffic rules. -- report machine damage or faulty operation immediately.
5. Before leaving or servicing machine: -- stop on level surface. -- set parking brake. -- turn off machine and remove key.
6. When servicing machine: -- avoid moving parts. do not wear loose jackets, shirts, or sleeves. -- block machine tires before jacking machine up. -- jack machine up at designated locations only. Block machine up with jack stands. -- use hoist or jack that will support the weight of the machine. -- wear eye and ear protection when using pressurized air or water. -- disconnect battery connections before working on machine. -- avoid contact with battery acid. -- avoid contact with hot engine coolant. -- allow engine to cool. -- keep flames and sparks away from fuel system service area. Keep area well ventilated. -- use cardboard to locate leaking hydraulic fluid under pressure. -- use tennant supplied or approved replacement parts.
7. When loading/unloading machine onto/off truck or trailer: -- Turn off machine. -- Use truck or trailer that will support the weight of the machine. -- Use winch. Do not drive the machine onto/off the truck or trailer unless the load height is 380 mm (15 in) or less from the ground. -- Set parking brake after machine is loaded. -- Block machine tires. -- Tie machine down t truck or trailer.

Source: manual:tennant-800-810-rider-floor-sweeper-service-manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.