Changing Engine Oil And Oil Filter; Adjusting The Valve Lash - Briggs & Stratton 040661 Installation And Operation Manual

Adjusting the Valve Lash

Changing Engine Oil and Oil Filter

Change the oil while the engine is still warm from
running.
1. Push the ON/OFF switch on the back of the
generator to the OFF (0) position.
2. Remove utility power to the generator to de-energize
the battery charger.
3. Unlock and open the roof as described in the Access
Panels section.
4. Remove the 15-amp fuse from the fuse holder located
below the controller.
5. Disconnect the negative (-) cable at the battery.
6. Place the oil drain hose into an approved container.
7. Remove the brass fitting from the end of the oil drain
hose.
8. Replace the brass fitting on the hose when the oil has
drained.
9. Set an approved container beneath the oil filter area.
10. Remove the oil filter and dispose of it properly.
11. Before installing a new oil filter, lightly lubricate the
oil filter gasket with fresh, clean oil.
12. Install the oil filter by hand until the gasket contacts
the oil filter adapter, then tighten the oil filter 1/2 to
3/4 turn.
13. Add the required amount of oil to bring the level
up to (but not over) the "full" mark on the dipstick.
Install the oil fill cap and wipe up any spilled oil.
14. Connect the negative (-} cable at the battery.
15. Install the 15-amp fuse into the fuse holder.
16. Close and lock the roof.
17. Restore utility power to the generator.
18. Push the ON/OFF switch on the back of the
generator to the ON (I) position.
19. Set the generator mode to auto.
Engine Oil
The engine is filled with full synthetic oil (API SJ/CF
5W-30). This oil allows for system operation in the widest
range of temperature and climate conditions.
The manufacturer recommends using Briggs & Stratton®
80028446 SAE 5W-30 full synthetic engine oil. Other
full synthetic high-quality detergent oils are acceptable
if classified for service SJ or higher. Do not use special
additives.
Note: An acceptable oil at all temperatures includes full
synthetic oil that:
• Meets International Lubricant
Specification Advisory Committee (ILSAC)
GF-2 standards
• Carries the API certification mark
• Features an API service symbol with
"SJ/CF energy conserving" or higher
Using full synthetic oil does not alter the
required oil change intervals described in the Operation
section.
Adjusting the Valve Lash
Check the valve lash every 100 hours of operation.
Measure the valve clearance with the engine cold. To
adjust the valve lash, proceed as follows:
1. Push the ON/OFF switch on the back of the
generator to the OFF (O) position.
2. Remove utility power to generator to de-energize the
battery charger.
3. Unlock and open the roof as described in the Access
Panels section.
4. Remove the 15-amp fuse from the fuse holder located
below the controller.
5. Disconnect the negative (-) cable at the battery.
6. Remove both spark plugs to ease manual rotation of
the engine crankshaft.
7. To gain access to rotate the engine by hand:
Remove the end cap, controller end. Remove the
sound panel by removing the two self-tapping
screws that secure it to the base to access the
crankshaft nut. Replace the sound panel and end
cap, controller end when finished.
OR remove the end cap, exhaust end to access the
alternator fan and hub. Take care to use the hub for
rotating to avoid possible damage to the fan blades,
as damage to the fan blades will affect airflow
through the alternator. Replace the end cap, exhaust
end when finished.
8. Set the no. 1 cylinder at 1/4 inch (6 mm) past Top
Dead Center (TDC) on the compression stroke.
9. Using a feeler gauge (A), measure the valve
clearance.
10. For proper valve clearance for both the intake and
exhaust, see the Engine Specifications section.
11. Adjust the clearance by loosening the locknut (B),
then turn the adjusting screw (C}.
36
Maintenance
Part No. 80106286
Revision C