Throttle Control (A); Operator Presence Control (B); Forward/Reverse Gear Change (B); Cylinder Drive Clutch Lever (A) - Ransomes Mastiff 91 Safety, Operation & Maintenance Manual

6 CONTROLS
6.1

THROTTLE CONTROL (A)

Move the throttle lever forward to increase the
engine speed which in turn engages the centrifugal
clutch thus driving the machine. The direction of
travel and blade engagement is determined by the
gearbox selection levers noted in 6.5 & 6.6
6.2

OPERATOR PRESENCE CONTROL (B)

Pushing the OPC down on the top handlebar allows
the operator to engage the transmission, forward /
reverse or mower. When any of these functions are
engaged releasing the OPC will stop the engine. The
OPC may be released and the engine continue to
run only if the transmission is disengaged
6.3 BRAKE (C)
The brake can be released when the operator is
ready to move the machine. The brake may be used
to slow the forward movement of the machine if nec-
essary but the engine speed should be reduced to
release the clutch or the OPC should be released to
stop the engine.
6.4 SERVICE BRAKE (C)
This should be applied when the operator moves
away from the operation position
6.5

FORWARD/REVERSE GEAR CHANGE (B)

To obtain forward drive the lever (B) should be
pushed to the left and then down from the neutral
position. It may be necessary to momentarily
increase the engine speed to ease the gear into
transmission.
For reverse drive the lever should be pushed to the
left and pulled upwards from the neutral position.
NOTE: It may be necessary to 'blip' the throttle to
allow the gear to engage.
6.6

CYLINDER DRIVE CLUTCH LEVER (A)

The clutch is engaged by pushing the lever (A) to the
right and then down. To disengage pull the lever
upwards and locate in slot at top of gate.
6.7

STARTER SWITCH (C)

This is turned clockwise to start the engine and anti-
clockwise to stop the engine.
GB-20
SAFETY, OPERATORS & MAINTENANCE MANUAL
A A
B B
B
A
C
C C