Engine Maintenance; Adjust Valve Lash - Briggs & Stratton 040351 Operator's Manual

Battery
WARNING Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Servicing of batteries is to be performed or supervised
by personnel knowledgeable of batteries and the
required precautions. Keep unauthorized personnel away
from batteries.
Servicing the Battery
If it is necessary to service the battery, proceed as follows:
1. Press and hold the control board OFF button.
2. Remove 15 Amp fuse from control panel.
3. Service or replace battery as required. See Battery
in Final Installation Considerations in the installation
manual for specific battery needed.
4. Connect red battery cable to battery positive terminal
(indicated by pOSITIVE, pOS, or (+)).
6. Connect black negative battery cable to negative battery
terminal (indicated by NEGATIVE, NEG, or (-).
7. Ensure hardware on both positive and negative battery
terminals is secure.
8. Reinstall 15 Amp fuse in control panel.
9. Press and hold the control board AUTO button.
DON'T POLLUTE. CONSERVE RESOURCES, RETURN
USED BATTERY TO RECYCLING COLLECTION
CENTER.
Charging the Battery
If it is necessary to charge the battery, proceed as follows:
1. Press and hold the control board OFF button.
2. Remove 15 Amp fuse from control board.
3. Disconnect negative battery cable from negative battery
terminal (indicated by NEGATIVE, NEG, or (-)).
NOTICE Failure to disconnect negative battery cable could
result in equipment failure.
• DO NOT attempt to jump start the generator.
• Damage to equipment resulting from failure to follow this
instruction will void engine and generator warranty.
4. Charge battery with battery charger at 2 Amps until
battery holds 12 Volts. DO NOT exceed 13.7 volts
when charging.
NOTICE DO NOT use a battery booster to quick charge a low
battery.
5. Connect negative battery cable to negative battery
terminal (indicated by NEGATIVE, NEG, or (-)).
6. Ensure hardware on both positive and negative battery
terminals is secure.
7. Reinstall 15 Amp fuse in control board.
8. Press and hold the control board AUTO button.
24

Engine Maintenance

Adjust Valve Lash

The valve lash must be checked every 100 hours of operation.
Measure valve clearance with the engine cold.
To adjust the valve lash, proceed as follows:
1. Remove spark plug(s) to ease manual rotation of engine
crankshaft.
2. Turn crankshaft counterclockwise until the piston is at Top
Dead Center on the compression stroke.
3. Insert a narrow screwdriver or rod into spark plug hole as
a gauge, then slowly turn crankshaft counterclockwise until
the piston has moved down the bore by 1/4".
4. For the Model 31 Engine:
• Use a feeler gauge (A), measure the valve clearance.
A
Model 31
• Adjust the rocker nut to obtain the correct clearance as
follows: 0.005 (0.013 mm) intake and
0.007 (0.018 mm) exhaust.
• Hold rocker nut and tighten the rocker ball set screw (B)
to 45 in/lb (5 Nm).
5. For the Model 35 Engine:
• Use a feeler gauge (A) to measure the valve clearance.
A
Model 35
• Adjust the clearance by loosening the lock nut (B) then
turn the adjusting screw (C) to obtain the following
measurement: 0.005 in. (0.013 mm) intake and exhaust.
• Once the clearance is properly set, hold the adjusting
screw while torqueing the lock nut to 70 in/lbs. (8 Nm).
6. Repeat for the other valve, if applicable.
C
B
B