19
m–3836
1
3
2
4
5
Figure 35
1.
Cover plate
2.
Cap screw
3.
Transfer pipe
4.
Exhaust port
5.
High temperature silicone
sealant
8. Rotate crankshaft slowly until piston covers exhaust
port (Fig. 35).
9. Using a wooden dowel, loosen carbon deposits by
inserting dowel into port.
Note: Do not use metal tools; they could scratch
piston.
10. Set mower upright.
11. Hold blade control bail against upper handle (Fig. 36)
and pull starter rope several times to blow out loose
carbon.
1348
1
3
2
Figure 36
1.
Blade control bail
2.
Upper handle
3.
Starter handle
12. Run a bead of high temperature, automotive silicone
sealant along the edge of the engine mounting plate
where the cover plate will rest (Fig. 35).
13. Reinstall transfer pipe and cover plate (Fig. 35),
torquing the (4) capscrews to 75 in lbs (8.5 N·m).
14. Attach blade driver, blade and mulch fan with blade
nut. See BLADE INSTALLATION.
15. Torque blade nut to 560 in.–lbs. (47 ft.–Ibs.) (63 Nm).
16. Tip mower upright.
17. Reconnect spark plug wire when maintenance is
completed.
18. Fill fuel tank with clean, fresh gasoline.
Battery (Model 10547)
Charging Battery
A new battery must be charged for 72 continuous hours to
ensure a full charge. Also, charge battery for 72 hours
when mower is stored for a long period of time and in the
spring before first mowing. Charge battery for 48 hours
once every month or as required. DO NOT
OVERCHARGE. The engine is equipped with an
alternator which charges the battery during operation.
Charging is not needed after each mowing.
1. Stop engine and pull wire off spark plug (Fig. 25).
Remove key from switch.
2. Disconnect leads connecting starter motor to battery
(Fig. 37).
1353
1
Figure 37
1.
Leads
3. Connect charger supplied with your mower to battery
and plug into 120VAC power outlet. After charging
battery for specified time, unplug charger and
disconnect from battery.
IMPORTANT: Only the Lawn-Boy charger is
recommended because other chargers could
damage the battery. Always use charger indoors
and charge battery at room temperature (22
_
C or
+70
_
F) whenever possible. Do not charge battery
longer than 72 hours because damage could result.
Note: Disconnect battery from charger and mower
during storage.
