5 - 205.5 SPARK PLUG
Spark plug should be cleaned or replaced (if
necessary) and gap reset to .030" every 100 hours of
operation or yearly whichever comes first.
To clean:
1. Remove debris from area around spark plug base.
2. Remove spark plug from engine.
3. Scrape and wash spark plug with a commercial
solvent. DO NOT blast clean.
4. Replace spark plug.
NOTE: Sparking can occur if wire terminal does not fit
firmly on spark plug. Replace terminal if damaged.
5.6 MUFFLER
Worn out mufflers should be replaced immediately.
Continued use could result in fire or explosion.
5.7 ENGINE REMOVAL
1. Disconnect and remove battery.
2. Empty fuel tank.
3. Disconnect spark plug wire.
4. Remove throttle cable and electrical connections
from engine.
5. Remove rear belt finger, drive and mower belts.
6. Remove cap screws securing engine to frame.
7. Remove engine.
5.8 ENGINE REPLACEMENT
Consult parts manual to determine hardware used on
replacement engine.
NOTE: Depending on horsepower and manufacturer,
various bolt patterns and amounts of hardware (taptites
or cap screws) may be used to secure engine.
The following diagrams outline two styles of hardware.
Place washers between frame and engine at locations
where taptites will be installed.
Install two taptites (5/16-18 x 1-1/2) and one taptite
(5/16-18 x 3/4) on inner bolt circle at position shown
below. Torque taptites to 250 in-lbs (15.4 Nm).
NOTE: If taptite strips out engine base, or if unit has
been previously operated with loose mounting bolts,
install a locknut (5/16-18 Gr C toplock). Torque locknut
to 150 in-lbs (9.2 Nm).
If taptite (5/16-18 x 3/4) strips out, install in alternate
hole. Torque to 250 in-lbs (15.4 Nm).
IMPORTANT: Do not use outer bolt circle.
Figure 15
1. Engine
2. Idler
3. Drive Belt
4. Drive Disc
5. Mower Pulley
6. Mower Belt
7. Engine Pulley
1
2
3
4
5
6
7
Figure 16 Tecumseh Engine
1. Washer
2. Taptite 5/16-18 x 1-1/2
3. Taptite 5/16-18 x 3/4
4. Inner Bolt Circle
5. Outer Bolt Circle
6. Alternate Hole
1
2
3
4
5
6
1
1
2