Yazoo/Kees KKFW48171 - Manual (Page 11)

11
INTERLOCK SAFETY SYSTEM
The interlock safety systems’s function is to prevent the engine from starting if the blades are engaged
or the drive levers are not locked in the thumb latches. It also causes engine shut down if the operator
falls from, or attempts to leave the operator position while the blades are engaged or the drive levers
are unlocked from the thumb latches. After the engine starts, the operator must hold down either the
left or right operator presence lever before engaging the blades or unlocking the drive levers from the
thumb latches. If neither operator presence lever is held down, the engine will stop. Check the function
of the safety electrical system on a regular basis.
1. Engine MUST kill if blades are engaged without at least one O.P. lever held down.
2. Engine MUST kill if the ddrive levers are unlocked from the thumb latches without holding down at
least one operator presence lever.
3. Engine MUST not start unless blades are off and the drive levers are locked in the thumb latches.
4. DO NOT operate the mower if the interlock safety system allows operation or starting in any
unsafe condition.
PUMP BELT
1. Before performing adjustments on pump belt, turn the mower off and disconnect spark plug
wire or wires.
2. Check tension on the belt. If it feels loose adjustment will need to be made.
3. Loosen the nut on the bottom of the idler pulley.
4. Slide the idler pulley against the belt, retighten the nut while applying pressure to the idler
pulley.