SERVICING YOUR ENGINE
THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-
free operation. It will also help reduce pollution.
Failure to properly maintain this engine, or failing to
correct a problem before operation, could result in a
significant malfunction.
Some malfunctions can seriously hurt or kill you.
Always follow the inspection and maintenance
recommendations and schedules in this owner's manual.
To help you properly care for your engine, the following pages
include a maintenance schedule, routine inspection procedures, and
simple maintenance procedures using basic hand tools. Other
service tasks that are more difficult, or require special tools, are
best handled by professionals and are normally performed by a
Honda technician or other qualified mechanic.
The maintenance schedule applies to normal operating conditions.
If you operate your engine under severe conditions, such as
sustained high-load or high-temperature operation, or use in
unusually wet or dusty conditions, consult your Honda servicing
dealer for recommendations applicable to your individual needs and
use.
MAINTENANCE SAFETY
Some of the most important safety precautions follow. However,
we cannot warn you of every conceivable hazard that can arise in
performing maintenance. Only you can decide whether or not you
should perform a given task.
Improper maintenance can cause an unsafe condition.
Failure to properly follow maintenance instructions and
precautions can cause you to be seriously hurt or killed.
Always follow the procedures and precautions in this
owner's manual.
SAFETY PRECAUTIONS
• Make sure the engine is off before you begin any maintenance or
repairs. To prevent unintentional startup, disconnect the spark
plug cap. This will eliminate several potential hazards:
– Carbon monoxide poisoning from engine exhaust.
Operate outside, away from open windows or doors.
– Burns from hot parts.
Let the engine and exhaust system cool before touching.
– Injury from moving parts.
Do not run the engine unless instructed to do so.
• Read the instructions before you begin, and make sure you have
the tools and skills required.
• To reduce the possibility of fire or explosion, be careful when
working around gasoline. Use only a non-flammable solvent, not
gasoline, to clean parts. Keep cigarettes, sparks and flames away
from all fuel related parts.
Remember that an authorized Honda servicing dealer knows your
engine best and is fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new Honda
Genuine parts or their equivalents for repair and replacement.
MAINTENANCE SCHEDULE
REGULAR SERVICE PERIOD (3)
Perform at every indicated
month or operating hour
interval, whichever comes
first.
ITEM
Engine oil
Check level
Change
Reduction case oil
Check level
(applicable types)
Change
Air cleaner
Check
Clean
Replace
Sediment cup
Clean
Spark plug
Check-adjust
Replace
Spark arrester
Clean
(applicable types)
Idle speed
Check-adjust
Valve clearance
Check-adjust
Combustion
Clean
chamber
Fuel tank & filter
Clean
Fuel tube
Check
*
• Internal vent carburetor with dual element type only.
• Cyclone type every 6 months or 150 hours.
INTERNAL VENT
CARBURETOR TYPE
BREATHER TUBE
TUBE CLIP
**
• Replace paper element type only.
• Cyclone type every 2 years or 600 hours.
(1) Service more frequently when used in dusty areas.
(2) These items should be serviced by your servicing dealer,
unless you have the proper tools and are mechanically
proficient. Refer to the Honda shop manual for service
procedures.
(3) For commercial use, log hours of operation to determine
proper maintenance intervals.
Failure to follow this maintenance schedule could result in
nonwarrantable failures.
ENGLISH
Each
First
Every 3
Every 6
Every
Use
Month
Months
Months
Year
or
or
or
20 Hrs
50 Hrs
100 Hrs
300 Hrs
(1)
*(1)
After every 1000 Hrs. (2)
(2)
Every 2 years
(Replace if necessary) (2)
STANDARD TYPE
BREATHER TUBE
Refer
or
to
Page
9
9
9
10
10
10-11
**
12
12
13
(2)
13
(2)
Shop
manual
Shop
manual
Shop
manual
Shop
manual
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