B
A
g027478
Figure 35
Checking the Spark Plug
Important:
Do not clean the spark plug. Always
replace the spark plug when it has a black coating, worn
electrodes, an oily film, or cracks.
Note:
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the insulator
usually means that the air cleaner is dirty.
Set the gap to 0.76 mm (0.030).
B
A
g027479
Figure 36
Installing the Spark Plug
Tighten the spark plug to 20 N-m (15 ft-lb).
B
A
15 ft-lb
20 N-m
g027480
C
D
Figure 37
Fuel System
Maintenance
DANGER
In certain conditions, gasoline is extremely
flammable and highly explosive. A fire or explosion
from gasoline can burn you and others and can
damage property.
•
Perform any fuel related maintenance when the
engine is cold. Do this outdoors in an open area.
Wipe up any gasoline that spills.
•
Never smoke when draining gasoline, and stay
away from an open flame or where a spark may
ignite the gasoline fumes.
Replacing the In-Line Fuel
Filter
Service Interval:
Every 100 hours—Replace the in-line fuel
filter
Never install a dirty filter if it is removed from the fuel line.
1.
Park the machine on a level surface and disengage the
blade-control switch.
2.
Move the motion-control levers outward to the park
position, stop the engine, remove the key, and wait for
all moving parts to stop before leaving the operating
position.
3.
Replace the in-line fuel filter (
30
Summary of Contents for 74710 TimeCutter SS 3225
Page 46: ...Schematics Electrical Diagram Rev A 46 ...
Page 47: ...Notes 47 ...