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SECTION 1: GENERAL INFORMATION
EQUIPMENT AFFECTING ENGINE OPERATION
Frequently, what appears to be a problem with engine oper-
ation, such as hard starting, vibration, etc., may be the fault
of the equipment powered rather than the engine itself. Listed
are the most common effects of equipment problems, and what
to look for as the most common cause.
HARD STARTING OR WILL NOT ST
ART:
1. Loose belt - a loose belt like a loose blade can cause a back-
lash effect, which will counteract engine cranking effort.
2. Starting under load - see if the unit is disengaged when
engine is started; or if engaged, should not have a heavy
starting load.
3. Check remote control assembly for proper adjustment.
4. Check interlock system for shorted wires, loose or corroded
connections, or defective modules or switches.
ENGINE WON'T STOP:
1. Check equipment ignition stop switch.
2. Check for loose or disconnected equipment stop switch
wire.
3. Check ground wire harness on engine.
a. See Section 2 for test procedure.
VIBRATION:
1. Unit load out of balance - remove and balance.
2. Mounting bolts loose - tighten.
POWER LOSS:
1. Bind or drag in unit- if possible, disengage engine and oper-
ate unit manually to feel for any binding action.
2. Unit load has excess drag.
NOISE:
1. Engine coupling or pulley - an oversize or worn coupling
can result in knocking, usually under acceleration. Check
for fit or tightness.
2. Equipment needs lubrication.
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