Clarke 56381408 (21KBCATCLDC), Operator'S Manual, Page: 12 / 64

A-12 / ENGLISH
A-12 - FORM NO. 56091023 - PBU Propane Burnisher with Dust Control
HOW TO OPERATE THE MACHINE
Preparing The Machine For Use
BEFORE using any type of powered equipment, proper safety dictates you should visually inspect it.
1.
Adjusting the Handle -
(a) Adjust the handle to a comfortable height by pulling outward on the two spring-loaded pins on each side of the handle.
(b) While holding the pins out, adjust the handle to the height desired.
(c) Release the pins so that they insert themselves into the locked positions. NOTE: It may be easier to stand to one side of the handle and
reach across to the other side to make the adjustment.
2. Bonnet Filter- Make sure the bonnet air fi lter atop the engine is clean. It should be changed hourly and thoroughly cleaned before reuse.
3. Oil Level -
(a) Check the engine OIL LEVEL.
(b) With the buffer sitting in a level position, unscrew the yellow oil fi ller cap, pull out, and wipe dipstick off with a clean cloth.
(c) Insert the dipstick into the tube, but DO NOT screw it back in.
(d) Pull the dipstick out and check the oil level making sure the oil level is in the operating range (grid area) shown on the dipstick. If the oil
level is in the “ADD” range, add enough engine oil to bring the oil level to the operating range. NOTE: NEVER over
fi ll the engine oil as this
can lead to irreparable damage to the engine.
4. Filling the Tank- Fill the tank following the instructions as given under the previous heading: “Re fi lling And Storing Propane Tanks.” In
addition, if your buffer came with an “80% Safety Fill Tank” then it should ONLY be fi lled through the threaded valve with the larger diameter
that is covered by a yellow cap to ensure a “Full” level that is safe.
5. Pad and Pad Holder -
Inspect the condition of the pad and pad holder.
(a) Adjust handle to it’s extreme upright position. (NOTE: Pins should be in the hole marked “TILTBACK”).
(b) Grabbing the handle with both hands and placing your foot on the back deck of the burnisher for stability, pull back on the handle and tilt
the machine back.
(c) Let the handle rest on the fl oor to hold the machine in the upright position.
(d) Go to the pad side of the machine for inspection and/or replacement. Is there a pad? Is it properly attached? What is it’s condition?
Ensure the pad is clean and has at least a thickness of 1/3 of an inch. Always turn off the engine before checking the pad.
6. Tank and Fuel Lines - The tank has already been covered but do the fuel lines show any sign of wear and tear, such as cracks or any
corrosion? Screw the brass fuel line fi tting onto the tank service valve, hand tight only. This connection MUST be secure because the
service valve has a safety valve inside it which will only open if the brass fuel line fi tting is COMPLETELY seated into the service valve.
7. Dust Containment Area -
Check the dust containment area and make sure that it is clean. This is the area underneath the propane tank.
(a) Remove the propane tank and then lift the black lid and locate the automotive-type fi lter.
(b) Inspect the fi lter. Is it dirty? Does it need to be cleaned or replaced? Make sure that the trough - that is outside of and below the level of
the fi lter - is clean.
8. Dust Skirt - Check out the condition of the skirt that surrounds the deck. Is it in good condition? What is the condition of the rubber boot
that connects the skirt to the rear part of the deck? Replace the boot if it is ripped or torn.
Starting the Engine
1. Open the service valve on the propane tank by turning counterclockwise, about one and a half turns.
2. Ensure the buffer is tilted back so that the pad is off the
fl oor on all machines without a clutch.
3. The engine is designed to be started with the throttle in the idle position. This creates a vacuum necessary to open the lock-off valve inside
the regulator. Movement of the throttle lever will keep the lock-off valve from opening and the engine from getting fuel so the engine will not
start. Proper maintenance will insure easy starting.
4. Engage starter for a MAXIMUM of 5 to 6 seconds or until the engine fi res. Serious starter damage will result if this is exceeded and the
warranty may not apply.
5. Operate the engine at half throttle for approximately two minutes for proper warm-up. Then advance to full throttle for best results.
NOTE: If the engine refuses to start, see the Trouble Shooting Guide.
Stopping The Engine
1. Close the service valve on the propane tank, by turning clockwise. This consumes all of the propane that is still in the fuel system.
2. ALWAYS allow the engine to run until it stops from lack of fuel, and then shut off the key switch. ** ONLY IN AN EMERGENCY should the “kill
switch” on buffer be used.
3. Disconnect the fuel line from the tank.
4. REMEMBER, when you are
fi nished with the machine, store the propane tank outside the building, in a safe place away from heat or direct
sunlight.