5. Check the valve clearance before making any
adjustments.
6. If the clearance is incorrect, loosen the rocker arm
jam nut. Using an allen wrench to turn the pivot
ball stud, check the clearance between the rocker
arm and the valve stem with a flat feeler gauge
(Figure 12).
Figure 12 - Adjusting Valve to Rocker Arm
Clearance
FEELER GAUGE
ALLEN WRENCH
7. When the valve clearance is correct, hold the pivot
ball stud with the allen wrench and tighten the
rocker arm jam nut. Torque the jam nut to 8.1 N-
m (72 in-lb). After tightening the jam nut, recheck
the valve clearance to make sure it did not change
(see Figure 12).
8. Reinstall the rocker cover gasket, rocker cover and
the four (4) screws (see Figure 11).
9. Reinstall the spark plug.
sToRage insTRuCTions
This engine should be started at least once a week
and run for at least 30 minutes. If this cannot be
done and the equipment must be stored for more
than 30 days, use the following guidelines to prepare
it for storage.
*
Never store the engine with fuel in the tank
indoors or in enclosed, poorly ventilated areas,
where fumes can reach an open flame, spark
or pilot light as on a furnace, water heater, or
clothes dryer.
1. Run the engine for about five (5) minutes to warm
up.
NOTE:
Alcohol-blended fuel, or “gasohol”, attracts
moisture which can lead to the separation
and formation of acids during storage. This
acidic gas can damage internal engine parts.
methanol, ethanol and grain alcohol all are
forms of gasohol. If “gasohol” was used, drain
the fuel tank, then run the engine until it stops
from lack of fuel.
*
Drain the fuel into approved container out-
doors, away from open flame. Be sure the
engine is cool.
section 3 — Maintenance
gsh-220 engine
MainTenanCe sChedule
Maintenance Opera tiOn
every 8 Hours or Daily
25 Hours or every
Season
50 Hours or every
Season
100 Hours or every
Season
Check Oil Level
X
Change Oil
See note 1
Change Oil Filter (if so equipped)
See note 1
Service Air Filter
Foam pre-Filter
paper Filter (note 2)
Replace or Clean Spark Plug
X
Clean Spark Arrestor Screen
X
Adjust Valve Clearance
See note 3
See note 3
NOTE 1: Change oil and filter after first 8 hours of operation and then every 100 hours thereafter. Change sooner when operating under heavy load or in dusty or
dirty environment or in high ambient temperature.
NOTE 2: Clean more often when operating under dirty or dusty conditions.
NOTE 3: Check valve lash and adjust if necessary after first 50 hours of operation and every 100 hours thereafter.
