Service And Repairs; Check Spark Plug Gap - Toro Workman 3000 Series Service Manual

Service and Repairs

Check Spark Plug Gap

1. Park machine on a level surface, stop engine, en­
gage parking brake, and remove key from the ignition
switch.
2. Read carefully Precautions for Working on Liquid
Propane Gas (LP) Fuel Systems before proceeding fur ­
ther.
3. Clean area around spark plugs so foreign matter
cannot fall into cylinder when spark plug is removed.
4. Disconnect spark plug wires off spark plugs. Re­
move plugs from cylinder head.
Replace Filter Screen in Vacuum Fuelock–Filter
1. Park machine on a level surface. Raise bed (if so
equipped) and place safety support under bed to hold it
up. Stop engine, engage parking brake, and remove key
from the ignition switch.
2. Read carefully Precautions for Working on Liquid
Propane Gas (LP) Fuel Systems before proceeding fur ­
ther.
3. Close valve on propane tank.
4. Run engine until all fuel has been drawn out of fuel
line and engine dies.
5. Remove fasteners securing the cover of vacuum
fuelock–filter to its base.
6. Remove filter screen from the base.
7. Replace filter screen and install cover.
8. Slowly open valve on propane tank. Check for leaks
using soapy water solution. No fuel leaks should be
present. Any detected fuel leaks must be repaired be ­
fore engine is started.
Workman 3000/4000 Series
IMPORTANT:A cracked, fouled, dirty or otherwise
malfunctioning spark plug must be replaced. Do not
sand blast, scrape, or clean electrodes by using a
wire brush because grit may eventually release from
the plug and fall into the cylinder usually resulting
in a damaged engine.
5. Check condition of side electrode, center electrode,
and center electrode insulator to assure there is no dam­
age.
6. Set air gap between center and side of electrodes at
0.030 inch (0.762 mm). Install correctly gapped spark
plug and tighten plug to 15 to 20 ft–lb (20 to 27 N–m).
7. Connect spark plug wires to spark plugs.
1. Cover
2. Filter screen
Page 11 – 11
Rev. D
Figure 8
3. Base
Liquid Propane Gas Conversion Kit
1
2
3