11 - 34
11.1 SAFETY INTERLOCK SYSTEM
Check the safety interlock system to make sure that it
is functioning properly. Rider must not start unless
speed selector is in neutral (N) and mower clutch is
disengaged (OUT). Engine MUST stop if operator
leaves seat when speed selector is in any drive
position or with mower clutch engaged (IN).
Interlock module grounds engine ignition if speed
selector and mower clutch switches are not closed.
Also, module will ground ignition if seat switch is not
closed when opening speed selector and mower clutch
switches.
11.2 TROUBLESHOOTING
Check that connections to switches are secure and that
switches are being activated properly before
performing electrical tests. (Safety switches on speed
selector and mower clutch levers may be out of
adjustment, not activating properly).
Check engine electrical function by disconnecting
Yellow wire (and Green wire on electric start models)
from engine. If engine has no spark, problem is in
engine (refer to engine repair manual).
If engine electrical system functions properly (has
spark) with wires disconnected, connect Yellow wire
(and Green wire on electric start model) to engine and
check that all wires of units electrical system are
connected properly (refer to electrical schematic).
IMPORTANT: When checking switches electrically,
remove them from their respective circuits by
disconnecting the wires from the switch at the
connector(s) before testing or damage could result to
meter or interlock module.
To test a normally open key (recoil start models), safety
or seat switch, connect an ohmmeter across switch
terminals. Meter should indicate high resistance (open
circuit). Activate the switch. Meter should read up scale
to zero resistance (Closed Circuit) indicating switch is
operating properly. Check from each terminal to switch
case (if case is metal), reading should show high
resistance indicating no short to ground.
The ignition switch (on electrical start models) has
three positions; OFF, RUN and a momentary START
position.
In the OFF position, there should be continuity between
contacts "M" and "G".
In the RUN position, there should be no continuity
between contacts "B" and "S".
If after performing the above checks the engine does
not start, check interlock module by disconnecting it at
connector. This removes the module from electronic
ignition circuit, If engine starts, module is defective and
must be replaced.
11.3 BATTERY (ELECTRIC START
MODELS)
Every 25 hours or each week check electrolyte level of
each cell by removing caps one at a time. The
electrolyte level should be at level indicator. Use
distilled water to fill each cell if needed. Install and
tighten each cap after checking.
IMPORTANT: When distilled water is added to battery
during freezing weather, it must be charged to mix
water with electrolyte or water will remain at top and
freeze.
Keep battery and its terminals clean. Inspect monthly
to be sure of obtaining best performance.
To clean terminals remove battery from unit by
removing cables. Remove battery strap and hooks and
lift battery out. Clean or service away from unit.
Remove corrosion from battery terminals and cable
connections with a wire brush, then wash with a weak
baking soda solution.
SECTION 11 - ELECTRICAL
DANGER: Failure of interlock, together with
improper operation of unit, could result in
severe personal injury.
WARNING: Batteries produce explosive
gases which can cause personal injury. DO
NOT allow flames, sparks or any ignited
object to come near battery. When charging
or working near a battery, always shield your
eyes and provide ventilation.
WARNING: Keep batteries out of reach of
children. Batteries contain sulfuric acid. Avoid
contact with skin, eyes or clothing. In case of
acid contact with skin, eyes or clothing, flush
immediately with water for a minimum of 15
minutes. If acid is swallowed, drink large
quantities of milk or egg or vegetable oil. Call
a physician immediately.
WARNING: DO NOT allow tools or other
objects to come into contact with both
terminals at same time. When removing
battery from unit, remove negative (-) cable
first to reduce risk of sparks.
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