IGNITION SYSTEM
Spark Plug Service
1.
Check spark plug with the chart in this subsection
and replace following the specifications given on
this page.
CAUTION: Do not clean plug with a sand blaster.
2.
Clean with a wire brush removing the carbon
buildup. Check conditions of the plug for cracking
or damage. Replace as necessary.
Item
Plug type
Specification/Action
Figure 48
3297-016
NGK BPMR4A or
equivalent
When the SCR is triggered or “fires”, up to 200 volts
DC, stored in the capacitor, travels to the spark coil.
Here it is stepped up to as much as 25,000 volts and is
discharged across the electrodes of the spark plug.
(See Figure 49.)
Frequency of change
As needed
Check, clean, and gap Every 50 hours
Gap
See specifications
See specifications
Ignition timing (when the SCR fires) is also determined
by the flywheel key and the keyways in the flywheel
and crankshaft. Damage to any of these parts will
affect the ignition timing.
Torque value
CD Pack Operation
The Capacitive Discharge (CD) system (see Figure 47)
is breakerless and contains electronic components that
replace mechanical points and related accessories
(such as a breaker cam, spark advance assembly,
etc.).
Figure 49
3297-017
Figure 47
A. CD Ignition Module
3297-015
As the flywheel magnet passes the CD Pack, an AC
voltage is induced into the charge coil. This AC voltage
is converted by a rectifier into a DC signal, which is
then stored in a capacitor. (See Figure 48.)
32
| Categories | Snow Blower Manuals, Toro Snow Blower |
|---|---|
| Model Year | 2005 |
| Download File |
|
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Snow Blower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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