General Information; Removing Debris From The Engine; Spark Plug Replacement - Toro Workman 3000 Series Service Manual

General Information

Removing Debris From Engine
To ensure proper cooling, make sure the grass screen,
cooling fins and other external surfaces of the engine
are kept clean at all times.
To clean, remove the blower housing and other cooling
shrouds and clean the cooling fins and external surfaces
as necessary. Make sure cooling shrouds are rein-
stalled after cleaning.
IMPORTANT: Operating the engine with a blocked
grass screen, dirty or plugged cooling fins or cool-
ing shrouds removed will cause engine damage due
to overheating.

Spark Plug Replacement

Spark plug type
Spark plug air gap
1. Clean area around spark plugs to prevent foreign ma-
terial from falling into cylinder when spark plug is re-
moved.
2. Pull spark plug wires off spark plugs and remove
plugs from cylinder head.
NOTE: When disconnecting spark plug wires, be sure to
hold cable cap and not wire. Disconnecting spark plug
wires by holding wire alone can cause damage to wire
and malfunction of ignition system.
3. Check condition of side electrode, center electrode,
and center electrode insulator to assure there is no dam-
age.
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. The result is
usually a damaged engine.
4. Set air gap between center and side of electrodes at
.040 in. (1 mm). Install correctly gapped spark plug and
tighten plug to 18 – 22 ft–lb (24 – 30 Nm). If torque
wrench is not used, tighten plug firmly.
5. Install spark plug wires.
Workman 3100
Champion RC 12YC
or equivalent
1 mm (.040 in.)
Page 5 – 3
Figure 1
.040"
(1 mm)
Figure 2
Air Cooled Gas Engine (Rev. G)