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MAINTENANCE
20
SERVICE AND
ADJUSTMENTS
Engine Speed
The engine runs at a constant speed.This constant
operating speed is maintained by a mechanical, flyweight
type, fixed speed governor. DO NOT try to adjust the
governed speed for the following reasons.
• Operating the engine at high engine speeds increases the
risk of injury and damage to the equipment.
• Operating the engine at low engine speeds with heavy
loads may shorten the engine’s life.
If the engine is running too fast or too slow, take it to an
authorized service center. Changing the engine’s governed
speed will void the warranty.
Carburetor Adjustments
The carburetor of the engine is pre-set at the factory. DO
NOT tamper with the carburetor or it will void the
Emissions Control System Warranty. If problems occur and
the engine is used at an altitude in excess of 5000 feet,
contact your nearest authorized service center regarding
high altitude setting changes.
Checking/Adjusting Valve Clearance
After the first 50 hours of operation, you should adjust the
valve clearance in the engine.
IMPORTANT: If you feel uncomfortable about doing this
procedure or you don’t have the proper tools, please take
your generator in to the nearest service center to have the
valve clearance adjusted.This is a very important step to
insure the longest life for your engine.
To adjust valve clearance:
1. Make sure the engine is at room temperature.
2. Make sure that spark plug wire is removed from spark
plug and out of way.
3. Remove breather tube from valve cover.
4. Remove four screws holding valve cover with a #2 or
#3 phillips screwdriver.
5. Make sure piston is at Top Dead Center (TDC) of its
compression stroke (both valves closed).To get the
piston at TDC, pull on recoil handle slowly watching
piston through spark plug hole.As you pull on recoil
handle, piston should move up and down.The piston is
at TDC when it is up as high as it can go.
• DO NOT tamper with governed speed.Engine supplies
correct rated frequency and voltage when running at governed
speed.
• DO NOT modify generator in any way.
Excessively high operating speeds increase risk of injury
and damage to generator.
Excessively low speeds impose a heavy load.
CAUTION