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6. Add fuel until it reaches the bottom of the fuel level limit
marked in the fuel tank.
a. Fill the tank to approximately 1.5 in. (38 mm) below the
top of the fuel tank to allow for fuel expansion.
7. Take care to not overfill the tank. It may be necessary to
lower the fuel level depending on operating conditions.
8. Check fuel lines, tank, cap, and fittings frequently for cracks
or leaks. Replace if necessary.
9. After refueling, tighten the fuel tank cap securely.
10. Wipe up any spilled fuel before starting the engine or allow
the fuel to evaporate. Spilled fuel is both a fire hazard and an
environmental hazard.
MAINTENANCE
The following section includes a maintenance schedule, routine inspection procedures and simple maintenance
procedures using basic hand tools. Service tasks that are more difficult or require special tools are best handled
by a technician or other qualified mechanic.
1. Maintain the engine with care. A well maintained engine is efficient, easier to control and will prevent
unnecessary problems.
2. Sustained high-load or high-temperature operation, or use in unusually wet or dusty conditions will require
more frequent servicing.
2. Follow instructions for servicing
3. Inspect the engine components periodically. Have damaged or worn components repaired or replaced by
an authorized technician.
4. Maintain the engine's label and name plate. These carry important information. If unreadable or missing,
contact Princess Auto Ltd. for replacements.
WARNING! Only qualified service personnel should repair the engine. An improperly repaired engine may
malfunction and cause an injury.
Maintenance Chart
First 5 Hours
Every 8 Hours or Daily
Every 25 Hours or Annual Clean air filter
Every 50 Hours or Annual Change engine oil
Annual
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173cc OHV Vertical Gas Engine
Change oil
Check engine oil level
Clean area around muffler and controls
Check muffler, muffler guard and spark arrestor (if applicable)
Replace spark plug
Replace air filter
Clean air cooling system
V 3.7
Fig.2
7