V 4.0
79cc OHV Gas Engine
8638025
1. Hard starting or stalling after starting.
2. Rough idle.
3. Misfiring or backfiring under load.
4. Afterburning (backfiring)
5. Black exhaust smoke or high fuel consumption
REPLACEMENT PARTS
The emission control systems on your engine were designed, built and certified to
conform to Canadian emission regulations. The use of genuine parts is recommended
whenever maintenance is done to the engine. Genuine replacement parts are
manufactured to the same standards as the original parts. Using replacement parts
that are not of the original design and quality may impair the effectiveness of your
emission control system.
It is the responsibility of the manufacturer of an aftermarket part to certify that use of
the part will not result in a failure of the engine to comply with emission regulations.
SERVICE THE AIR FILTER
NOTICE! Operating the engine with a damaged or missing air filter will allow
dust and debris to enter the engine, causing rapid engine wear or scoring on
the engine pistons. Always ensure the air filter is in place.
A dirty air filter will restrict airflow to the carburetor, reducing engine performance.
If the engine is used in very dusty areas, clean the air filter more frequently than
specified in the maintenance schedule.
1. Remove the air cleaner’s outside cover. Be careful to prevent dirt and debris
from falling into the air cleaner assembly.
2. Remove the air filter from the air filter housing.
3. Clean the housing interior with warm soap and water. Allow to dry
before reassembly.
4. Inspect the air filter to see if you can clean it or if it should be discarded.
Discard if it is too dirty and replace with a new filter.
a. Clean dirty air filter with warm water and mild soap or a non-
flammable solvent. Replace the water as necessary, until the water is
no longer dirty. Dispose of the oil contaminated water in accordance
with your local by-laws.
Visit www.princessauto.com for more information
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