
18” DRUM MACHINE CONTROLS
17
It is imperative that all operators are familiar with all controls of the chipper. This will make for
a much more productive and safer work period. (The actual controls may differ depending on
the engine supplied with your chipper.)
ENGINE CONTROLS:
• For the John Deere 170HP engine, the
Key Switch and Gauges are located in a
lockable panel at the rear of the engine.
Always turn off the engine and remove
the key from the switch before
performing service or maintenance of
any kind.
• The engine is supplied with a three-
position key switch. Turn the key
clockwise all the way to start the engine;
always start the engine at idle. When the
engine is running, release the key and it
returns to the on (run) position. Turn the
key counter-clockwise to shut down the
engine.
DO NOT OPERATE THE ENGINE
AT AN ANGLE GREATER THAN
25° OR SEVERE ENGINE DAMAGE
WILL OCCUR. PROPER ENGINE
OIL LEVEL MUST BE MAINTAINED
TO ACHIEVE MAXIMUM ANGLE
OF OPERATION OF 25°. (See Engine
Owner’s Manual for proper oil level.)
• A throttle switch is located next to the
key switch. The lower (idle) position is
for starting the engine, low speed engine
operation during warm up, clutch
engagement/disengagement, and engine
cool down. The upper position is for
running the engine at full speed during
chipping operations.
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