SkyTrak 6036 Service Manual - Manual (Page 281)

Section 10. Electrical System
10-19 Model 6036/6036T S/N 9B0500 thru 14833
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MA1071
10.5.4 Thermo Start Plug for Cold
Weather Starting - Perkins
When the ignition key switch, Fig. 10.11, is turned
to the Thermo Start position, a Thermo Start plug
(1, Fig. 10.12) ignites a fuel/air mixture in the
intake manifold (2) to facilitate cold weather
starting.
To use this starting aid for cold weather starting,
turn key to the Thermo Start position and hold it
there for fifteen to twenty seconds. With the
throttle pedal fully depressed, turn the key to the
START position to engage the starter motor.
If the engine doesn’t start within fifteen seconds,
return the switch to the THERMO START position
for ten seconds and then reengage the starter
motor by turning key to the START position.
As soon as the engine starts, allow key to return to
the RUN position.
If the engine should fail to start, check the electri-
cal connection to the Thermo Start plug.
In the event of difficult starting, check that fuel is
reaching the Thermo Start plug by unscrewing the
inlet fuel connection. If fuel is reaching the
Thermo Start plug, the plug itself may not be
working correctly. This can be checked by remov-
ing the air cleaner and watching the cold starting
aid while the equipment is used. When the
starting switch is turned to the THERMO START
position, the element should become red hot, and
on engagement of the starter motor, ignition of the
fuel should take place.
The engine is fitted with an efficient cold starting
aid and no responsibility can be accepted for any
damage caused by unauthorized starting aids.
a. Removal
1. Tag and disconnect wire at electrical terminal
(3, Fig. 10.12).
2. Disconnect fuel line (4).
3. Remove Thermo Start plug.
b. Disassembly
Do not disassemble the Thermo Start plug.
c. Cleaning and Drying
Without submerging the Thermo Start plug, clean
the exterior of the plug in an approved solvent and
dry using a clean lint-free cloth.
d. Inspection and Replacement
1. Examine the bore of the fuel channel for any
contamination and clean as required.
2. Test the coil of the Thermo Start plug using
short heavy gauge wires connected to a fused
or protected 6 A minimum output, 12 Vdc
power supply. If the coil doesn’t heat, replace
the Thermo Start plug.
e. Installation
1. Install the Thermo Start plug.
2. Connect fuel line (4, Fig. 10.12).
3. Connect wire at electrical terminal (3).
Fig. 10.12 Thermo Start Plug for Cold Weather Starting
1. Thermo Start Plug 2. Intake Manifold 3. Electrical Terminal 4. Fuel Line Fitting